Turnover foaming platform for insulation board production

Abstract

The utility model discloses a kind of turnover foaming platforms for insulation board production, which belongs to the technical field of refrigerated truck insulation composite board production equipment.It mainly includes stand, and one side of stand is fixedly connected with lower mould platform, and upper mould platform is rotatably connected above lower mould platform, and at least three groups of height adjusting components are fixedly connected on lower mould platform;Height adjusting component includes height adjusting seat, height adjusting hole and limit hole one are opened on height adjusting seat, and assembly hole corresponding with height adjusting hole is opened on lower mould platform, and limit telescopic mechanism corresponding with height adjusting seat is fixedly connected on upper mould platform, and the protruding end of limit telescopic mechanism is fixedly connected with the limit shaft inserted into cooperation with limit hole one.The utility model adds locking mechanism, improves equipment safety, and at the same time, height adjusting component can accurately adjust the distance between upper mould platform and lower mould platform, and can stably adapt to the production needs of insulation board of different thickness.

Description

Technical Field

[0001] This utility model belongs to the technical field of refrigerated truck insulation composite board production equipment, specifically, it relates to a flipping foaming platform for insulation board production. Background Technology

[0002] Refrigerated trucks, as key equipment in cold chain logistics, directly impact the quality and safety of transported goods due to their insulation performance. Insulation composite panels, as core components of refrigerated truck bodies, are of paramount importance in terms of performance. Among these, open-cell foaming technology offers unique advantages in the production of insulation composite panels for refrigerated trucks, effectively improving various performance indicators and meeting the diverse requirements of refrigerated trucks for insulation, lightweighting, and other aspects.

[0003] For example, the patent with announcement number "CN213675126U" discloses a fully automatic segmented upper mold for a refrigerated insulation composite board production line. By starting an electric winch, the steel rope winding wheel is driven to wind up, and then the upper mold is lifted with the cooperation of the rotating shaft and the insertion slot, thus separating from the lower mold and realizing the opening of the segmented upper mold. Multiple segmented upper molds can be opened or closed in time sequence by receiving proximity photoelectric switch signals. At the same time, the length of the insertion slot is three times the diameter of the rotating shaft, ensuring that when the upper mold is subjected to gravity, the position of the rotating shaft in the insertion slot is automatically adjusted according to the height of the segmented blocks.

[0004] While the aforementioned patent solves the problem of open-cell foaming in refrigerated insulation composite panels, it still has the following shortcomings in practical use: 1. Although the segmented upper mold function is achieved through segmented blocks, its adaptability to refrigerated insulation composite panels of different specifications and thicknesses is poor. When producing insulation panels of different sizes, the segmented blocks need to be frequently adjusted, and since the thickness of the segmented blocks is fixed, it is impossible to precisely control the thickness of the insulation panels, resulting in lower production efficiency and increased operational complexity; 2. The upper mold is fixed only by an electric winch when it is raised, lacking a safety locking mechanism, which poses a safety hazard when the upper mold is raised and paused; 3. The lack of a fixing device between the upper and lower molds results in insufficient control precision of the foaming thickness of the refrigerated insulation composite panels and poor product standardization. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a flipping foaming platform for the production of insulation boards. It adds a locking mechanism to improve the safety of the equipment. At the same time, the height adjustment component can accurately adjust the distance between the upper mold platform and the lower mold platform. With the guide and limiting function of the side plate of the support seat and the fixing function of the limiting hole two, it can stably adapt to the production needs of insulation boards of different thicknesses and improve the versatility of the equipment.

[0006] The aforementioned insulated board production flipping foaming platform includes a column, a lower mold platform fixedly connected to one side of the column, an upper mold platform rotatably connected above the lower mold platform, and at least three sets of height adjustment components fixedly connected to the lower mold platform. The height adjustment components include a height adjustment seat, which has a height adjustment hole and a limiting hole. The lower mold platform has an assembly hole corresponding to the height adjustment hole, and either the assembly hole or the height adjustment hole is an elongated hole. The upper mold platform has a limiting telescopic mechanism corresponding to the height adjustment seat fixedly connected, and the extended end of the limiting telescopic mechanism is fixedly connected to a limiting shaft that engages with the limiting hole.

[0007] Preferably, multiple fixing seats are fixedly connected to both the lower mold platform and the column, and the fixing seats are provided with fixing holes for limiting and fixing the lower mold platform.

[0008] Preferably, a support base is fixedly connected to the lower mold platform, and side plates are fixedly connected to both sides of the support base. A height adjustment seat is disposed inside the support base, and both sides of the height adjustment seat abut against the corresponding side plates.

[0009] Preferably, the lower ends of the height adjustment seat and the support seat are respectively provided with corresponding limiting holes.

[0010] Preferably, the column is provided with a locking mechanism, which includes a second fixed seat, which is fixedly connected to the column. A locking telescopic mechanism is fixedly connected to the second fixed seat, and a locking shaft is fixedly connected to the extended end of the locking telescopic mechanism. A locking seat corresponding to the locking mechanism is fixedly connected to the upper mold platform, and a locking hole is provided on the locking seat for insertion and engagement with the locking shaft.

[0011] Preferably, the locking mechanism is provided with a limiting rod on one or both sides for limiting the upper mold platform, and the limiting rod is fixedly connected to the column.

[0012] Preferably, a rotating seat two is fixedly connected to both sides of the lower end of the column, and a rotating shaft is provided on the rotating seat two. A rotating arm is fixedly connected to one end of the upper mold platform near the column, and a rotating hole is provided on the rotating arm to cooperate with the rotating shaft. The rotating hole is an elongated hole.

[0013] Preferably, it also includes a winch with a steel rope wound on it. A rotating seat is fixedly connected to the top of the column, and a guide wheel is rotatably connected to the rotating seat. The steel rope passes over the guide wheel and is fixedly connected to the upper mold platform.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. The lower mold platform is equipped with three or more height adjustment components. The height adjustment components can accurately adjust the distance between the upper mold platform and the lower mold platform through the elongated hole design of the height adjustment seat. With the guide limit of the support seat side plate and the fixing function of the limit hole two, it can stably adapt to the production needs of insulation boards of different thicknesses and improve the versatility of the equipment.

[0016] 2. A locking mechanism is added. The locking mechanism can firmly fix the raised upper mold platform to the column by inserting the locking shaft and the locking hole, preventing accidental rotation or falling when not in operation. The limit rod further restricts the rotation angle of the upper mold platform, improves locking efficiency and accuracy, avoids excessive rotation of the upper mold platform which may damage the equipment or cause safety accidents, and ensures the safety of operators.

[0017] 3. The upper mold platform is equipped with a limit telescopic mechanism. The limit telescopic mechanism drives the limit shaft to engage with the limit hole of the height adjustment seat to achieve precise alignment and stable fixation of the upper and lower mold platforms, forming a closed foaming cavity with the lower mold. During the foaming process, the upper mold platform maintains stable pressure through the limit shaft to ensure that the foaming material is fully formed within the set shape and size range, thereby improving the dimensional accuracy and consistency of the insulation board.

[0018] 4. By abutting the side plates of the height adjustment seat and the support seat, cooperating with the rotating arm and the rotating shaft, and matching the steel rope with the guide wheel, it is ensured that there is no jamming when the components are linked, reducing mechanical wear, extending the service life of the equipment, and reducing maintenance costs. Attached Figure Description

[0019] Figure 1 This is a structural schematic diagram of the upper mold platform of this utility model in the raised state;

[0020] Figure 2 This is a schematic diagram of the upper mold platform in the descending state of this utility model;

[0021] Figure 3 This is a schematic diagram of the upper mold platform.

[0022] Figure 4 for Figure 3 A magnified view of part A in the middle;

[0023] Figure 5 This is a structural diagram of the column and the lower mold platform;

[0024] Figure 6 for Figure 5 A magnified view of part B in the middle section;

[0025] Figure 7 for Figure 5 A magnified view of part C in the middle.

[0026] In the diagram, 1. Lower mold platform; 101. Fixed seat one; 1011. Fixed hole; 102. Support seat; 103. Height adjustment seat; 104. Height adjustment hole; 105. Limiting hole one; 106. Limiting hole two; 2. Upper mold platform; 201. Limiting telescopic mechanism; 202. Limiting shaft; 203. Locking seat; 2031. Locking hole; 204. Rotating hole; 205. Rotating arm; 3. Column; 301. Rotating seat one; 302. Guide wheel; 303. Limiting rod; 304. Locking mechanism; 3041. Locking telescopic mechanism; 3042. Fixed seat two; 3043. Locking shaft; 305. Rotating seat two; 306. Rotating shaft; 4. Winch; 401. Steel rope. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings:

[0028] The directional terms used in the detailed description paragraphs are only for the convenience of those skilled in the art to understand the technical solutions described in this application based on the visual orientation shown in the accompanying drawings. Unless otherwise expressly specified and limited, the terms "setting," "installation," "connection," etc., should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Example 1:

[0030] like Figures 1 to 7 As shown, the insulated board production flipping foaming platform includes a column 3. The column 3 serves as the core support component of the entire foaming platform, providing an installation foundation and stable support for the lower mold platform 1 and the upper mold platform 2, ensuring the overall structural strength and stability of the foaming platform. The lower mold platform 1 is fixedly connected to one side of the column 3. The lower mold platform 1 is the main load-bearing foundation for the foaming of the insulation board, used to place the lower mold of the insulation board, providing a bottom support surface for the foaming of the insulation board. It also serves as a cooperating structure with the upper mold platform 2, forming a closed space for the foaming of the insulation board together with the lower mold and the upper mold platform 2. The upper mold platform 2 is rotatably connected above the lower mold platform 1, meaning the upper mold platform 2 can rotate relative to the lower mold platform 1. After the insulation board foaming is completed, rotating the upper mold platform 2 performs a flipping action, facilitating the removal of the molded insulation board from the lower mold. Simultaneously, during the foaming process, the lower mold, lower mold platform 1, and upper mold platform 2 cooperate to form a closed foaming cavity, ensuring the shape and dimensional accuracy of the foamed insulation board.

[0031] like Figure 1As shown, at least three sets of height adjustment components are fixedly connected to the lower mold platform 1. In this embodiment, four sets of height adjustment components are preferred, and the four sets of height adjustment components are respectively arranged at the four corners of the lower mold platform 1. The height adjustment components are used to adjust the relative height between the upper mold platform 2 and the lower mold platform 1 to adapt to the foaming requirements of insulation boards of different thicknesses. Through the four sets of height adjustment components, the stability and balance of the adjustment can be guaranteed, ensuring that the upper mold platform 2 can be stably matched at different height positions.

[0032] like Figure 5 and Figure 6 As shown, each height adjustment assembly includes a height adjustment seat 103, which is the core component of the height adjustment assembly. The height adjustment seat 103 has a height adjustment hole 104 and a limiting hole 105. The lower mold platform 1 has an assembly hole corresponding to the height adjustment hole 104. By cooperating with the assembly hole of the lower mold platform 1, the height of the height adjustment seat 103 on the lower mold platform 1 can be adjusted. Specifically, either the assembly hole or the height adjustment hole 104 is an elongated hole. In this embodiment, the height adjustment hole 104 is preferably a vertical elongated hole. During installation, the assembly hole and the height adjustment hole 104 cooperate, and the height adjustment seat 103 is fixed in different positions by fasteners (such as bolts), thereby realizing height adjustment. The design of the elongated hole provides adjustment space for height adjustment, allowing the height adjustment seat 103 to move along the length of the elongated hole, thereby adjusting the height to adapt to the fine height adjustment of the insulation board thickness.

[0033] A limiting telescopic mechanism 201 corresponding to the height adjustment seat 103 is fixedly connected to the upper mold platform 2. The limiting telescopic mechanism 201 is preferably a cylinder, and its extended end is fixedly connected to a limiting shaft 202 that engages with a limiting hole 105. The limiting hole 105 engages with the limiting shaft 202 of the upper mold platform 2 to achieve limiting fixation of the upper mold platform 2 and the lower mold platform 1 at a specific height. To facilitate engagement with the limiting shaft 202, the limiting hole 105 can be any one of a slot, a long hole, or a round hole with a diameter larger than the limiting shaft 202. When it is necessary to fix the relative position of the upper mold platform 2 and the lower mold platform 1, the limiting telescopic mechanism 201 drives the limiting shaft 202 to extend and insert into the limiting hole 105, achieving limiting fixation of both. When it is necessary to rotate the upper mold platform 2, the limiting telescopic mechanism 201 drives the limiting shaft 202 to retract, releasing the limiting.

[0034] Multiple fixing seats 101 are fixedly connected to both the lower mold platform 1 and the column 3. The fixing seats 101 are provided with fixing holes 1011 for limiting and fixing the lower mold platform 1. The fixing seats 101 provide the installation position for fixing the lower mold platform 1 and the column 3. The fixing holes 1011 are used to limit and fix the lower mold platform 1 and the column 3 to the ground or other foundation structure by fasteners (such as anchor bolts), so as to prevent the lower mold platform 1 from shifting or shaking during operation.

[0035] A support base 102 is fixedly connected to the lower mold platform 1. The support base 102 is used to support and install the height adjustment seat 103. Side plates are fixedly connected to both sides of the support base 102. The height adjustment seat 103 is disposed inside the support base 102, and both sides of the height adjustment seat 103 abut against the corresponding side plates. The side plates guide and limit the height adjustment seat 103, ensuring that the height adjustment seat 103 moves vertically during adjustment and avoiding deviation or shaking.

[0036] The lower ends of the height adjustment seat 103 and the support seat 102 are respectively provided with corresponding limiting holes 106. The limiting holes 106 are used to fix the height adjustment seat 103 and the support seat 102 relative to each other by inserting limiting parts (such as limiting pins) after the height adjustment seat 103 is adjusted to a specific position, thereby further enhancing the stability of the height adjustment seat 103 and preventing it from moving accidentally during operation, thus ensuring the accuracy of the foaming thickness of the insulation board.

[0037] Example 2:

[0038] The aforementioned insulated board production flipping foaming platform has a locking mechanism 304 on its column 3. The locking mechanism 304 is used to lock and fix the upper mold platform 2 to the column 3 after it is raised, preventing accidental rotation or uncontrolled fall when not in operation, thus greatly improving equipment safety. Specifically, as... Figure 5As shown, the locking mechanism 304 includes a second fixed base 3042, which is fixedly connected to the column 3. A locking telescopic mechanism 3041 is fixedly connected to the second fixed base 3042. The locking telescopic mechanism 3041 is preferably a cylinder. The second fixed base 3042 provides a mounting base for the locking telescopic mechanism 3041. A locking shaft 3043 is fixedly connected to the extended end of the locking telescopic mechanism 3041. By driving the locking shaft 3043 to extend and retract through the locking telescopic mechanism 3041, locking and unlocking functions can be realized. A locking seat 203 corresponding to the locking mechanism 304 is fixedly connected to the upper mold platform 2. The locking seat 203 has a locking hole 2031 for insertion and engagement with the locking shaft 3043. The locking seat 203 cooperates with the locking mechanism 304. When it is necessary to lock the upper mold platform 2, the locking shaft 3043 is inserted into the locking hole 2031 to achieve relative fixation between the upper mold platform 2 and the column 3. When unlocking, the locking shaft 3043 is withdrawn from the locking hole 2031 to release the fixation.

[0039] To further improve the accuracy of the locking position of the upper mold platform 2, limiting rods 303 for limiting the upper mold platform 2 can be provided on both sides of the locking mechanism 304. The limiting rods 303 are fixedly connected to the column 3. The limiting rods 303 are used to limit the rotation angle of the upper mold platform 2, preventing excessive rotation of the upper mold platform 2 from damaging the equipment or affecting operational safety, thereby ensuring that the upper mold platform 2 rotates within the set angle range. When the upper mold platform 2 is raised and needs to be locked, simply bring the upper end face of the upper mold platform 2 close to the end of the limiting rod 303. At this time, the locking shaft 3043 can be accurately inserted into the locking hole 2031.

[0040] Rotating seats 305 are fixedly connected to both sides of the lower end of the column 3. A rotating shaft 306 is mounted on each rotating seat 305. The rotating seats 305 and the rotating shaft 306 provide support and a center of rotation for the upper mold platform 2. A rotating arm 205 is fixedly connected to one end of the upper mold platform 2 near the column 3. The rotating arm 205 has a rotating hole 204 that mates with the rotating shaft 306. Thus, the rotating arm 205 connects the upper mold platform 2 and the rotating shaft 306, enabling the upper mold platform 2 to rotate. The rotating hole 204 is an elongated hole, providing some adjustment space for the rotation of the upper mold platform 2, accommodating adjustments in the height direction and ensuring smooth rotation. Everything else is the same as in Embodiment 1.

[0041] Example 3:

[0042] The aforementioned insulated board production flipping foaming platform also includes a winch 4, which serves as the power device for driving the upper mold platform 2 to rotate. A steel rope 401 is wound around the winch 4. A rotating seat 301 is fixedly connected to the top of the column 3, and a guide wheel 302 is rotatably connected to the rotating seat 301. The guide wheel 302 is used to change the direction of force on the steel rope 401, reducing friction between the steel rope 401 and other components, improving transmission efficiency and the service life of the steel rope 401. During installation, the steel rope 401 passes over the guide wheel 302. The guide wheel 302 has a groove that mates with the steel rope 401. The steel rope 401 is embedded in the groove of the guide wheel 302, and the steel rope 401 is in close contact with the inner wall of the groove. The rotation of the guide wheel 302 changes the direction of force on the steel rope 401, reducing frictional loss. The end of the steel rope 401 is fixedly connected to the upper mold platform 2. By winding and unwinding the steel rope 401, the upper mold platform 2 is driven to rotate around the rotating shaft 306, realizing the lifting and lowering of the upper mold platform 2. Everything else is the same as in Example 2.

[0043] The working principle of this utility model is as follows:

[0044] During the insulation board production preparation stage, the upper mold platform 2 is in the raised state, and the locking mechanism 304 locks and fixes the upper mold platform 2 and the column 3. At this time, the lower mold platform 1 and the column 3 are firmly fixed to the ground or foundation structure by using fasteners such as anchor bolts through the fixing holes 1011 of the fixing seat 101 on the lower mold platform 1 and the column 3, ensuring the stability of the equipment during operation. According to the thickness requirements of the insulation board to be produced, the height adjustment component is adjusted. Since the height adjustment seat 103 is set inside the support seat 102 and its two sides abut against the side plates of the support seat 102, the side plates play a guiding role. The operator can move the height adjustment seat 103 along the direction of the elongated hole. After adjusting to the appropriate height, the height adjustment seat 103 is fixed by fasteners passing through the assembly hole and the height adjustment hole 104. At the same time, the limiting component is inserted into the corresponding limiting hole 106 at the lower end of the height adjustment seat 103 and the support seat 102 to further enhance the stability of the height adjustment seat 103 and prevent it from shifting in subsequent operations.

[0045] The lower mold is placed on the lower mold platform 1, and foaming material is injected into the lower mold. Then, the mold closing stage begins. The locking mechanism 304 on the column 3 is activated, and the locking telescopic mechanism 3041 drives the locking shaft 3043 to retract. The locking shaft 3043 disengages from the locking hole 2031, releasing the locking state between the upper mold platform 2 and the column 3. Then, the winch 4 is started, releasing the steel rope 401. After the steel rope 401 changes the direction of force through the guide wheel 302 on the rotating seat 301 at the top of the column 3, it drives the upper mold platform 2 to rotate around the rotating shaft 306, causing the upper mold platform 2 to gradually move closer to the lower mold platform 1 below. When the two approach the preset position, the limiting telescopic mechanism 201 on the upper mold platform 2 is activated, driving the limiting shaft 202 to extend and insert into the limiting hole 105 of the height adjustment seat 103 on the lower mold platform 1, so as to achieve precise alignment and limiting fixation of the upper mold platform 2 and the lower mold platform 1. At this time, the upper mold platform 2 and the lower mold platform 1 form a closed foaming cavity, providing a suitable space for the foaming of the insulation board.

[0046] During the foaming process of the insulation board, the lower mold platform 1 provides bottom support, and the upper mold platform 2 maintains stable pressure through the cooperation of the limiting shaft 202 and the height adjustment seat 103, ensuring that the foaming material is fully foamed and formed within the set shape and size range. After foaming is completed, the mold opening and flipping material unloading stage begins. First, the limiting telescopic mechanism 201 drives the limiting shaft 202 to retract, releasing the limiting fixation between the upper mold platform 2 and the lower mold platform 1. Then, the winch 4 rotates in reverse to wind up the steel rope 401, and the upper mold platform 2 rotates upward around the rotating shaft 306 under the tension of the steel rope 401. When the upper mold platform 2 abuts against the limiting rod 303, the locking mechanism 304 is activated, and the locking telescopic mechanism 3041 drives the locking shaft 3043 to extend and insert into the locking hole 2031 of the locking seat 203 on the upper mold platform 2, locking and fixing the upper mold platform 2 to the column 3, ensuring the safety of subsequent operations. At this point, the operator can easily remove the formed insulation board from the lower mold platform 1, completing one production cycle. If production is required again, the above steps can be repeated.

[0047] Finally, although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A flipping foaming platform for producing insulation boards, comprising a column (3), a lower mold platform (1) fixedly connected to one side of the column (3), and an upper mold platform (2) rotatably connected above the lower mold platform (1), characterized in that: At least three sets of height adjustment components are fixedly connected to the lower mold platform (1); the height adjustment components include a height adjustment seat (103), the height adjustment seat (103) is provided with a height adjustment hole (104) and a limiting hole (105), the lower mold platform (1) is provided with an assembly hole corresponding to the height adjustment hole (104), either the assembly hole or the height adjustment hole (104) is an elongated hole, the upper mold platform (2) is fixedly connected with a limiting telescopic mechanism (201) corresponding to the height adjustment seat (103), the extended end of the limiting telescopic mechanism (201) is fixedly connected with a limiting shaft (202) that is inserted into the limiting hole (105).

2. The flipping foaming platform for producing insulation boards according to claim 1, characterized in that: Multiple fixing seats (101) are fixedly connected to the lower mold platform (1) and the column (3). Fixing holes (1011) are provided on the fixing seats (101) for limiting and fixing the lower mold platform (1) and the column (3).

3. The flipping foaming platform for producing insulation boards according to claim 1, characterized in that: A support base (102) is fixedly connected to the lower mold platform (1). Side plates are fixedly connected to both sides of the support base (102). A height adjustment seat (103) is set inside the support base (102), and both sides of the height adjustment seat (103) abut against the corresponding side plates.

4. The flipping foaming platform for producing insulation boards according to claim 3, characterized in that: The lower ends of the height adjustment seat (103) and the support seat (102) are respectively provided with corresponding limiting holes (106).

5. The flipping foaming platform for producing insulation boards according to claim 1, characterized in that: The column (3) is provided with a locking mechanism (304). The locking mechanism (304) includes a fixed seat (3042), which is fixedly connected to the column (3). A locking telescopic mechanism (3041) is fixedly connected to the fixed seat (3042). A locking shaft (3043) is fixedly connected to the extended end of the locking telescopic mechanism (3041). A locking seat (203) corresponding to the locking mechanism (304) is fixedly connected to the upper mold platform (2). A locking hole (2031) for inserting and cooperating with the locking shaft (3043) is opened on the locking seat (203).

6. The flipping foaming platform for producing insulation boards according to claim 5, characterized in that: The locking mechanism (304) has a limiting rod (303) on one or both sides for limiting the upper mold platform (2), and the limiting rod (303) is fixedly connected to the column (3).

7. The flipping foaming platform for producing insulation boards according to claim 1, characterized in that: The lower end of the column (3) is fixedly connected to two rotating seats (305) respectively. The rotating seat (305) is provided with a rotating shaft (306). The upper mold platform (2) is fixedly connected to a rotating arm (205) at one end near the column (3). The rotating arm (205) is provided with a rotating hole (204) that cooperates with the rotating shaft (306). The rotating hole (204) is an elongated hole.

8. The flipping foaming platform for producing insulation boards according to any one of claims 1 to 7, characterized in that: It also includes a winch (4), on which a steel rope (401) is wound. A rotating seat (301) is fixedly connected to the top of the column (3). A guide wheel (302) is rotatably connected to the rotating seat (301). The steel rope (401) passes over the guide wheel (302) and is fixedly connected to the upper mold platform (2).

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