Segmented folding type mold opening mold

Abstract

The utility model discloses a sectional folding type mold opening mold which comprises a fixed mold, a movable mold and a retractable distance fixing mechanism, one end of the retractable distance fixing mechanism is connected with the fixed mold, the other end of the retractable distance fixing mechanism is connected with the movable mold, and the retractable distance fixing mechanism can stretch or retract; when the mold is opened, the retractable distance fixing mechanism is in a stretching state; and when the mold is closed, the retractable distance fixing mechanism is in a contracted state. The retractable spacing mechanism is arranged on the mold and is connected with the fixed mold and the movable mold, so that the mold opening spacing of the mold can be limited during mold opening, the retractable spacing mechanism can be retracted during mold closing, the retractable spacing mechanism is prevented from exceeding the mold plate surface of the mold, and the mounting of the injection molding machine cannot be influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a segmented folding mold opening mold. Background Art

[0002] During mold processing and mold structure design for injection molding products, the overall product has a long, ring-shaped structure. When injection molding such products, the mold must be equipped with a core-pulling mechanism with a long core-pulling stroke, resulting in a longer mold opening stroke for the fixed and movable molds. Alternatively, to facilitate product removal from the mold, the mold opening strokes for the fixed and movable molds must be increased. Due to the long mold opening strokes for the fixed and movable molds, the mold opening distance is long, and the corresponding distance-fixing tie rods are very long, extending beyond the mold plate surface, making it impossible to install the mold on the injection molding machine.

[0003] like Figure 1 and Figure 2 As shown, the mold includes a fixed mold 1, a movable mold 2 and a distance rod 3. The distance rod 3 is provided with a first elongated hole 4 and a second elongated hole 5. The first elongated hole 4 is mounted on the first positioning column 6 of the fixed mold 1 and can slide on the first positioning column 6. The second elongated hole 5 is mounted on the second positioning column 7 of the movable mold 2 and can slide on the second positioning column 7. Figure 2 As shown, when the mold is opened, the fixed mold 1 and the movable mold 2 move away from each other, and the first long hole 4 and the second long hole 5 on the distance rod 3 cooperate with the first positioning column 6 and the second positioning column 7 respectively, thereby limiting the distance of the mold opening. Figure 1 As shown, when the mold is closed, the fixed mold 1 and the movable mold 2 move closer to each other. Since the distance tie rod 3 is long, the end of the distance tie rod 3 will exceed the template surface of the mold, resulting in the mold being unable to be installed on the injection molding machine. Utility Model Content

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide a segmented folding mold opening mold to solve the problem in the prior art that the distance tie rods of the mold will exceed the mold template surface after the mold is closed.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] The utility model provides a segmented folding mold opening die, comprising a fixed die, a movable die and a retractable spacing mechanism, wherein one end of the retractable spacing mechanism is connected to the fixed die, and the other end of the retractable spacing mechanism is connected to the movable die, and the retractable spacing mechanism can be extended or retracted;

[0007] When the mold is opened, the retractable spacing mechanism is in an extended state; when the mold is closed, the retractable spacing mechanism is in a retracted state.

[0008] Furthermore, the retractable distance mechanism includes a first distance rod and a second distance rod that cooperate with each other, the end of the first distance rod away from the second distance rod is connected to the fixed mold, and the end of the second distance rod away from the first distance rod is connected to the movable mold, and the ends of the first distance rod and the second distance rod facing each other can slide or rotate with each other.

[0009] Furthermore, the first distance rod is provided with a sliding groove for the second distance rod, one end of the second distance rod is provided in the sliding groove and can slide in the sliding groove, the movable mold is provided with a limiting column, the second distance rod is provided with a long hole that cooperates with the limiting column, and the second distance rod can slide on the limiting column through the long hole;

[0010] A first limiting structure is provided between the first distance rod and the second distance rod, and the first limiting structure is used to limit the sliding distance of the second distance rod in the sliding groove.

[0011] Furthermore, the first limiting structure includes a first limiting protrusion and a second limiting protrusion that cooperate with each other. The first limiting protrusion is arranged at the end of the slide groove and protrudes toward the inner wall of the slide groove. The second limiting protrusion is arranged at one end of the second distance rod extending into the slide groove and protrudes toward the outer wall of the second distance rod.

[0012] Furthermore, the second distance rod is provided with a first sliding hole, one end of the first distance rod is provided in the first sliding hole and can slide in the first sliding hole, the movable mold is provided with a guide block, the guide block is provided with a second sliding hole, the second distance rod is provided in the second sliding hole and can slide in the second sliding hole;

[0013] A first limiting structure is provided between the first distance rod and the second distance rod, and the first limiting structure is used to limit the sliding distance of the first distance rod in the first sliding hole. A second limiting structure is provided between the second distance rod and the guide block, and the second limiting structure is used to limit the sliding distance of the second distance rod in the second sliding hole.

[0014] Furthermore, the first limiting structure includes a first limiting protrusion and a second limiting protrusion that cooperate with each other, the first limiting protrusion is provided at one end of the first distance rod extending into the first sliding hole and protruding toward the outer wall of the first distance rod, and the second limiting protrusion is provided at one end of the first sliding hole facing the first distance rod and protruding toward the inner wall of the first sliding hole.

[0015] Furthermore, the second limiting structure includes a third limiting protrusion and a fourth limiting protrusion that cooperate with each other, the third limiting protrusion is provided at one end of the second distance rod toward the guide block and protrudes toward the outer wall of the second distance rod, and the fourth limiting protrusion is provided at one end of the second sliding hole toward the first distance rod and protrudes toward the inner wall of the second sliding hole.

[0016] Furthermore, a third limiting structure is provided between the second distance rod and the guide block, and the third limiting structure includes a fifth limiting protrusion and a sixth limiting protrusion that cooperate with each other. The fifth limiting protrusion is provided at one end of the second distance rod toward the first distance rod and protrudes toward the outer wall of the second distance rod, and the sixth limiting protrusion is provided in the second sliding hole and protrudes toward the inner wall of the second sliding hole.

[0017] Furthermore, one end of the first distance rod is rotatably connected to one end of the second distance rod, the other end of the first distance rod is rotatably connected to the fixed mold, and the other end of the second distance rod is rotatably connected to the movable mold.

[0018] Furthermore, the retractable spacing mechanism also includes a reset plate and a reset spring, one end of the reset plate is fixed to the end of the first spacing rod away from the second spacing rod and has an angle with the first spacing rod, one end of the reset spring is fixed to the other end of the reset plate, and the other end of the reset spring is fixed to the fixed mold.

[0019] The beneficial effect of this utility model lies in that, by providing a retractable spacing mechanism on the mold and connecting it to the fixed mold and movable mold, the mold opening distance can be limited during mold opening, and the mechanism can be retracted during mold closing, preventing the retractable spacing mechanism from extending beyond the mold template surface and thus preventing interference with the installation of the injection molding machine. This effectively solves the limitation of being unable to accurately control the mold opening distance due to a large mold opening distance and a small mold thickness, providing effective technical support for improving product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the mold during mold closing in the prior art.

[0021] Figure 2 It is a structural schematic diagram of the mold when opening the mold in the prior art.

[0022] Figure 3 It is a structural schematic diagram of the mold in the first embodiment of the present invention when the mold is closed.

[0023] Figure 4 It is a structural schematic diagram of the mold in Example 1 of the present utility model when the mold is opened.

[0024] Figure 5It is a structural schematic diagram of the retractable spacing mechanism in the retracted state in the first embodiment of the present invention.

[0025] Figure 6 It is a structural schematic diagram of the retractable spacing mechanism in the first embodiment of the present invention in the extended state.

[0026] Figure 7 It is a schematic structural diagram of the mold in the second embodiment of the present invention when the mold is closed.

[0027] Figure 8 It is a structural schematic diagram of the mold in the second embodiment of the present invention when the mold is opened.

[0028] Figure 9 It is a structural schematic diagram of the retractable spacing mechanism in the retracted state in the second embodiment of the present utility model.

[0029] Figure 10 It is a structural schematic diagram of the retractable spacing mechanism in the second embodiment of the present utility model in the extended state.

[0030] Figure 11 It is a schematic structural diagram of the mold in the third embodiment of the present invention when the mold is closed.

[0031] Figure 12 This is a schematic structural diagram of the mold in the third embodiment of the present invention when the mold is opened.

[0032] Figure 13 It is a structural schematic diagram of the retractable spacing mechanism in the retracted state in the third embodiment of the present invention.

[0033] Figure 14 It is a structural schematic diagram of the retractable spacing mechanism in the third embodiment of the present utility model in the extended state.

[0034] In the figure: fixed mold 10, screw 11, fixed block 12, first rotating shaft 13, movable mold 20, movable mold floating plate 21, movable mold fixed plate 22, mold leg 23, bottom mold 24, limiting column 25, guide block 26, second sliding hole 261, fourth limiting protrusion 262, sixth limiting protrusion 263, second rotating shaft 27, retractable spacing mechanism 30, first spacing rod 31, sliding groove 311, first limiting protrusion 312, second spacing rod 32, long hole 321, second limiting protrusion 322, first sliding hole 323, third limiting protrusion 324, fifth limiting protrusion 325, reset plate 33, reset spring 34, third rotating shaft 35, first heat insulation plate 41, second heat insulation plate 42. DETAILED DESCRIPTION

[0035] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, features and effects of the segmented folding mold opening mold proposed by the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments:

[0036] [Example 1]

[0037] Figure 3 It is a structural schematic diagram of the mold in the first embodiment of the present invention when the mold is closed. Figure 4 It is a structural schematic diagram of the mold in Example 1 of the present utility model when the mold is opened. Figure 5 It is a structural schematic diagram of the retractable spacing mechanism in the retracted state in the first embodiment of the present invention. Figure 6 It is a structural schematic diagram of the retractable spacing mechanism in the first embodiment of the present invention in the extended state.

[0038] like Figures 3 to 6 As shown, the first embodiment of the present invention provides a segmented folding mold, comprising a fixed mold 10, a movable mold 20 and a retractable spacing mechanism 30. One end of the retractable spacing mechanism 30 is connected to the fixed mold 10, and the other end of the retractable spacing mechanism 30 is connected to the movable mold 20. The retractable spacing mechanism 30 can be extended or retracted. Figure 4 and Figure 6 As shown, when the mold is opened, the retractable spacing mechanism 30 is in an extended state; Figure 3 and Figure 5 As shown, when the mold is closed, the retractable spacing mechanism 30 is in a retracted state.

[0039] The utility model provides a retractable spacing mechanism 30 on the mold and connects it with the fixed mold 10 and the movable mold 20, so that the mold opening distance of the mold can be limited when the mold is opened, and the retractable spacing mechanism 30 can be retracted when the mold is closed, thereby preventing the retractable spacing mechanism 30 from exceeding the template surface of the mold and not affecting the installation of the injection molding machine.

[0040] Furthermore, the retractable spacing mechanism 30 includes a first spacing rod 31 and a second spacing rod 32 that cooperate with each other. The end of the first spacing rod 31 away from the second spacing rod 32 is connected to the fixed mold 10, and the end of the second spacing rod 32 away from the first spacing rod 31 is connected to the movable mold 20. The ends of the first spacing rod 31 and the second spacing rod 32 facing each other can slide or rotate with each other.

[0041] In this embodiment, one end of the first distance rod 31 away from the second distance rod 32 is fixedly connected to the fixed mold 10 by a screw 11, and one end of the second distance rod 32 away from the first distance rod 31 is slidably connected to the movable mold 20, and the ends of the first distance rod 31 and the second distance rod 32 facing each other can slide with each other. Specifically, the first distance rod 31 is provided with a sliding groove 311 for the second distance rod 32, and one end of the second distance rod 32 is provided in the sliding groove 311 and can slide in the sliding groove 311. A limiting column 25 is provided on the movable mold 20, and a long hole 321 that cooperates with the limiting column 25 is provided on the second distance rod 32. The second distance rod 32 can slide on the limiting column 25 through the long hole 321. Among them, the first distance rod 31 and the second distance rod 32 are both plate-like structures, and the sliding groove 311 and the long hole 321 both extend along the direction of opening or closing the mold. As shown Figure 3 and Figure 5 As shown, optionally, the length of the chute 311 is greater than or equal to the length of the second distance rod 32, so that the second distance rod 32 can be completely retracted within the chute 311, thereby reducing the size of the retractable distance mechanism 30 in the retracted state. A bearing can also be provided on the limiting column 25 to reduce the friction between the second distance rod 32 and the limiting column 25.

[0042] Furthermore, a first limiting structure is provided between the first and second distance rods 31, 32. This first limiting structure is used to limit the sliding distance of the second distance rod 32 within the chute 311, thereby preventing the second distance rod 32 from sliding out of the chute 311 and limiting the mold opening distance. The length of the elongated hole 321 limits the sliding distance of the second distance rod 32 on the limiting post 25, thus providing both guidance and limiting functions.

[0043] Optionally, the first limiting structure includes a first limiting protrusion 312 and a second limiting protrusion 322 that cooperate with each other. The first limiting protrusion 312 is provided at the end of the slide groove 311 and protrudes toward the inner wall of the slide groove 311. The second limiting protrusion 322 is provided at one end of the second distance rod 32 extending into the slide groove 311 and protrudes toward the outer wall of the second distance rod 32. Figure 4 and Figure 6 As shown, when the mold is opened to the maximum distance, the first limiting protrusion 312 and the second limiting protrusion 322 abut against each other, thereby preventing the first distance rod 31 and the second distance rod 32 from moving further away, thereby limiting the mold opening distance.

[0044] In this embodiment, the movable mold 20 includes a movable mold floating plate 21, a movable mold fixed plate 22, mold legs 23, and a bottom mold 24, which are stacked in sequence. The movable mold floating plate 21 faces the side of the fixed mold 10, and the limit posts 25 are disposed on the movable mold floating plate 21. Optionally, a retractable spacing mechanism 30 is disposed on the outer wall of the segmented folding mold to prevent interference with the mold's internal structure. A first thermal insulation board 41 is provided on the side of the fixed mold 10 facing away from the movable mold 20, and a second thermal insulation board 42 is provided on the side of the bottom mold 24 facing away from the fixed mold 10. The first and second thermal insulation boards 41 and 42 provide thermal insulation for the segmented folding mold.

[0045] [Example 2]

[0046] Figure 7 It is a schematic structural diagram of the mold in the second embodiment of the present invention when the mold is closed. Figure 8 It is a structural schematic diagram of the mold in the second embodiment of the present invention when the mold is opened. Figure 9 It is a structural schematic diagram of the retractable spacing mechanism in the retracted state in the second embodiment of the present utility model. Figure 10 This is a schematic diagram of the structure of the retractable spacing mechanism in the second embodiment of the present invention when it is in the extended state. Figures 7 to 10 As shown, the segmented folding mold provided in the second embodiment of the present invention is different from the one in the first embodiment ( Figures 3 to 6 ) are basically the same as the segmented folding mold, except that:

[0047] In this embodiment, the fixed mold 10 is provided with a fixed block 12. The end of the first spacer 31 that is away from the second spacer 32 is fixedly connected to the fixed block 12. The end of the second spacer 32 that is away from the first spacer 31 is slidably connected to the movable mold 20. The facing ends of the first spacer 31 and the second spacer 32 are capable of sliding relative to each other. Specifically, the second spacer 32 is provided with a first sliding hole 323. One end of the first spacer 31 is disposed within the first sliding hole 323 and is capable of sliding within the first sliding hole 323. The movable mold 20 is provided with a guide block 26. The guide block 26 is provided with a second sliding hole 261. The second spacer 32 is disposed within the second sliding hole 261 and is capable of sliding within the second sliding hole 261. The second distance rod 32 is a tubular structure, the first distance rod 31 is a cylindrical structure, the first sliding hole 323 passes through the second distance rod 32, and the second sliding hole 261 passes through the guide block 26. The first sliding hole 323 and the second sliding hole 261 both extend along the direction of mold opening or closing. Figure 7 and Figure 9 As shown, optionally, the length of the first sliding hole 323 is greater than or equal to the length of the first distance rod 31, so that the first distance rod 31 can be completely retracted into the first sliding hole 323 to reduce the size of the retractable distance mechanism 30 in the retracted state.

[0048] Furthermore, a first limiting structure is provided between the first distance bar 31 and the second distance bar 32. The first limiting structure is used to limit the sliding distance of the first distance bar 31 within the first sliding hole 323, thereby preventing the first distance bar 31 from sliding out of the first sliding hole 323 and defining the mold opening distance. A second limiting structure is provided between the second distance bar 32 and the guide block 26. The second limiting structure is used to limit the sliding distance of the second distance bar 32 within the second sliding hole 261, thereby preventing the second distance bar 32 from sliding out of the second sliding hole 261 and defining the mold opening distance.

[0049] Optionally, the first limiting structure includes a first limiting protrusion 312 and a second limiting protrusion 322 that cooperate with each other. The first limiting protrusion 312 is provided at one end of the first distance rod 31 extending into the first sliding hole 323 and protruding toward the outer wall of the first distance rod 31. The second limiting protrusion 322 is provided at one end of the first sliding hole 323 facing the first distance rod 31 and protruding toward the inner wall of the first sliding hole 323. Figure 8 and Figure 10 As shown, when the mold is opened to the maximum distance, the first limiting protrusion 312 and the second limiting protrusion 322 abut against each other, thereby preventing the first distance rod 31 and the second distance rod 32 from moving further away, thereby limiting the mold opening distance.

[0050] Optionally, the second limiting structure includes a third limiting protrusion 324 and a fourth limiting protrusion 262 that cooperate with each other. The third limiting protrusion 324 is provided at one end of the second distance rod 32 facing the guide block 26 and protrudes toward the outer wall of the second distance rod 32. The fourth limiting protrusion 262 is provided at one end of the second sliding hole 261 facing the first distance rod 31 and protrudes toward the inner wall of the second sliding hole 261. Figure 8 and Figure 10 As shown, when the mold is opened to the maximum distance, the third limiting protrusion 324 and the fourth limiting protrusion 262 abut against each other, thereby preventing the second distance rod 32 and the guide block 26 from moving further away, thereby limiting the mold opening distance.

[0051] Furthermore, a third limiting structure is provided between the second distance rod 32 and the guide block 26. The third limiting structure includes a fifth limiting protrusion 325 and a sixth limiting protrusion 263 that cooperate with each other. The fifth limiting protrusion 325 is provided at one end of the second distance rod 32 facing the first distance rod 31 and protrudes toward the outer wall of the second distance rod 32. The sixth limiting protrusion 263 is provided in the second sliding hole 261 and protrudes toward the inner wall of the second sliding hole 261. Figure 7 and Figure 9 As shown, after the mold is closed, the fifth limiting protrusion 325 and the sixth limiting protrusion 263 abut against each other to prevent the second distance rod 32 from being separated from the second sliding hole 261.

[0052] It should be understood by those skilled in the art that the remaining structures and working principles of this embodiment are the same as those of the first embodiment and will not be described in detail here.

[0053] [Example 3]

[0054] Figure 11 It is a schematic structural diagram of the mold in the third embodiment of the present invention when the mold is closed. Figure 12 This is a schematic structural diagram of the mold in the third embodiment of the present invention when the mold is opened. Figure 13 It is a structural schematic diagram of the retractable spacing mechanism in the retracted state in the third embodiment of the present invention. Figure 14 This is a schematic diagram of the structure of the retractable spacing mechanism in the third embodiment of the present invention when it is in the extended state. Figures 11 to 14 As shown, the segmented folding mold opening mold provided in the third embodiment of the present invention is different from the one in the first embodiment ( Figures 3 to 6 ) are basically the same as the segmented folding mold, except that:

[0055] In this embodiment, the end of the first distance rod 31 away from the second distance rod 32 is rotationally connected to the fixed mold 10, and the end of the second distance rod 32 away from the first distance rod 31 is rotationally connected to the movable mold 20. The ends of the first distance rod 31 and the second distance rod 32 facing each other can rotate with each other. Specifically, one end of the first distance rod 31 and one end of the second distance rod 32 are rotationally connected via a third rotating shaft 35, the other end of the first distance rod 31 is rotationally connected to the fixed mold 10 via the first rotating shaft 13, and the other end of the second distance rod 32 is rotationally connected to the movable mold 20 via the second rotating shaft 27. Figure 11 and Figure 13 As shown, after the mold is closed, the first distance rod 31 and the second distance rod 32 are folded together, so that the first distance rod 31 and the second distance rod 32 are nearly parallel to the template surface of the mold, which greatly reduces the size of the retractable distance mechanism 30 in the mold thickness direction.

[0056] Furthermore, the retractable spacing mechanism 30 includes a reset plate 33 and a reset spring 34. One end of the reset plate 33 is fixed to the end of the first spacing rod 31 away from the second spacing rod 32, and forms an angle with the first spacing rod 31, preferably 45 degrees. One end of the reset spring 34 is fixed to the other end of the reset plate 33, and the other end of the reset spring 34 is fixed to the fixed mold 10. The reset plate 33 and reset spring 34 ensure that the first and second spacing rods 31, 32 fold toward the folding mold during mold closing, preventing the retractable spacing mechanism 30 from extending beyond the side of the mold.

[0057] It should be understood by those skilled in the art that the remaining structures and working principles of this embodiment are the same as those of the first embodiment and will not be described in detail here.

[0058] In this document, directional terms such as "up," "down," "left," "right," "front," and "back" are defined based on the positions of structures in the accompanying drawings and their relative positions to each other, for the sake of clarity and convenience in presenting the technical solution. It should be understood that the use of these directional terms does not limit the scope of protection claimed in this application. It should also be understood that the terms "first" and "second," etc., used herein, are used solely for distinctions and are not intended to limit quantity or order.

[0059] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this profession can make some changes or modifications to the technical content disclosed above without departing from the scope of the technical solution of the present invention, which are equivalent embodiments of equivalent changes. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A segmented folding mold, characterized in that: The invention comprises a fixed mold (10), a movable mold (20) and a retractable spacing mechanism (30), wherein one end of the retractable spacing mechanism (30) is connected to the fixed mold (10), and the other end of the retractable spacing mechanism (30) is connected to the movable mold (20), and the retractable spacing mechanism (30) can be extended or retracted; When the mold is opened, the retractable spacing mechanism (30) is in an extended state; when the mold is closed, the retractable spacing mechanism (30) is in a retracted state.

2. The segmented folding mold according to claim 1, characterized in that: The retractable distance mechanism (30) comprises a first distance rod (31) and a second distance rod (32) that cooperate with each other, wherein one end of the first distance rod (31) away from the second distance rod (32) is connected to the fixed mold (10), and one end of the second distance rod (32) away from the first distance rod (31) is connected to the movable mold (20), and the ends of the first distance rod (31) and the second distance rod (32) facing each other can slide or rotate relative to each other.

3. The segmented folding mold according to claim 2, characterized in that: The first distance rod (31) is provided with a sliding groove (311) for the second distance rod (32), one end of the second distance rod (32) is provided in the sliding groove (311) and can slide in the sliding groove (311), the movable mold (20) is provided with a limiting column (25), the second distance rod (32) is provided with a long hole (321) that matches the limiting column (25), and the second distance rod (32) can slide on the limiting column (25) through the long hole (321); A first limiting structure is provided between the first distance rod (31) and the second distance rod (32), and the first limiting structure is used to limit the sliding distance of the second distance rod (32) in the sliding groove (311).

4. The segmented folding mold according to claim 3, characterized in that: The first limiting structure comprises a first limiting protrusion (312) and a second limiting protrusion (322) that cooperate with each other, wherein the first limiting protrusion (312) is arranged at the end of the slide groove (311) and protrudes toward the inner wall of the slide groove (311), and the second limiting protrusion (322) is arranged at one end of the second distance rod (32) extending into the slide groove (311) and protrudes toward the outer wall of the second distance rod (32).

5. The segmented folding mold according to claim 2, characterized in that: The second distance rod (32) is provided with a first sliding hole (323), one end of the first distance rod (31) is provided in the first sliding hole (323) and can slide in the first sliding hole (323), the movable mold (20) is provided with a guide block (26), the guide block (26) is provided with a second sliding hole (261), the second distance rod (32) is provided in the second sliding hole (261) and can slide in the second sliding hole (261); A first limiting structure is provided between the first distance rod (31) and the second distance rod (32), and the first limiting structure is used to limit the sliding distance of the first distance rod (31) in the first sliding hole (323); a second limiting structure is provided between the second distance rod (32) and the guide block (26), and the second limiting structure is used to limit the sliding distance of the second distance rod (32) in the second sliding hole (261).

6. The segmented folding mold according to claim 5, characterized in that: The first limiting structure comprises a first limiting protrusion (312) and a second limiting protrusion (322) that cooperate with each other. The first limiting protrusion (312) is provided at one end of the first distance rod (31) extending into the first sliding hole (323) and protruding toward the outer wall of the first distance rod (31). The second limiting protrusion (322) is provided at one end of the first sliding hole (323) facing the first distance rod (31) and protruding toward the inner wall of the first sliding hole (323).

7. The segmented folding mold according to claim 5, characterized in that: The second limiting structure comprises a third limiting protrusion (324) and a fourth limiting protrusion (262) that cooperate with each other. The third limiting protrusion (324) is provided on one end of the second distance rod (32) facing the guide block (26) and protrudes toward the outer wall of the second distance rod (32). The fourth limiting protrusion (262) is provided on one end of the second sliding hole (261) facing the first distance rod (31) and protrudes toward the inner wall of the second sliding hole (261).

8. The segmented folding mold according to claim 5, characterized in that: A third limiting structure is provided between the second distance rod (32) and the guide block (26), the third limiting structure comprising a fifth limiting protrusion (325) and a sixth limiting protrusion (263) that cooperate with each other, the fifth limiting protrusion (325) being provided at one end of the second distance rod (32) facing the first distance rod (31) and protruding toward the outer wall of the second distance rod (32), and the sixth limiting protrusion (263) being provided in the second sliding hole (261) and protruding toward the inner wall of the second sliding hole (261).

9. The segmented folding mold according to claim 2, characterized in that: One end of the first distance rod (31) and one end of the second distance rod (32) are rotatably connected, the other end of the first distance rod (31) is rotatably connected to the fixed mold (10), and the other end of the second distance rod (32) is rotatably connected to the movable mold (20).

10. The segmented folding mold according to claim 9, characterized in that: The retractable spacing mechanism (30) further comprises a reset plate (33) and a reset spring (34); one end of the reset plate (33) is fixed to one end of the first spacing rod (31) away from the second spacing rod (32) and forms an angle with the first spacing rod (31); one end of the reset spring (34) is fixed to the other end of the reset plate (33); and the other end of the reset spring (34) is fixed to the fixed mold (10).

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