Quick dismounting structure and method for heavy mold

Abstract

The application relates to a quick dismounting structure and method for a heavy mold, and relates to the technical field of mold manufacturing. The quick dismounting structure comprises a mounting mold frame and a heavy mold arranged on the mounting mold frame. The mounting mold frame comprises a lower mold base for supporting the heavy mold, an upper mold frame, and a wedge block assembly wedged between the heavy mold and the mounting mold frame. The heavy mold is provided with an upper mounting portion and a lower mounting portion. The lower mounting portion is provided with a lower guide surface inclined towards both sides of the heavy mold from top to bottom. The upper mold frame is provided with an upper mounting groove matched with the upper mounting portion for locking. The lower mold base is provided with a lower mounting groove matched with the lower mounting portion for locking and a push assembly slidably arranged on both sides of the lower mounting groove. The push assembly comprises an ejection unit arranged on one side of the lower mounting portion and a push-in unit arranged on the other side. The ends of the ejection unit and the push-in unit are respectively parallel to the corresponding lower guide surfaces. The application can improve the quick dismounting effect of the heavy mold and the mold frame support.

Description

Technical Field

[0001] This application relates to the field of mold manufacturing, and in particular to a quick assembly and disassembly structure and method for heavy molds. Background Technology

[0002] In modern manufacturing industries such as metal stamping, plastic injection molding, and die casting, heavy-duty molds are key process equipment for achieving mass production and high precision. These molds are typically extremely heavy, making the installation, locking, and disassembly of the molds and mold base crucial aspects of production preparation and mold changeover.

[0003] Currently, the installation and fixing of heavy-duty molds generally adopts traditional bolt fastening methods or the use of special clamps. Bolt fastening requires operators to manually tighten or loosen multiple high-strength bolts one by one using large wrenches. This requires multiple operators working together, resulting in high labor intensity, significant safety hazards, and low efficiency. Using special clamps requires clamping force to hold the upper and lower mold assemblies separately. Especially for heavy-duty molds, the clamping power requirements are substantial, leading to high initial investment and subsequent maintenance costs.

[0004] Regarding the aforementioned technologies, when the mold needs to be removed for replacement, the initial separation of the mold and mold frame is extremely difficult due to the huge static friction and the mold's own weight. Therefore, the inventors believe that it is necessary to provide a quick disassembly and assembly structure and method for heavy molds. Summary of the Invention

[0005] To improve the rapid assembly and disassembly of heavy-duty molds and mold frame supports, this application provides a rapid assembly and disassembly structure and method for heavy-duty molds.

[0006] Firstly, this application provides a quick-assembly and disassembly structure for heavy-duty molds, employing the following technical solution:

[0007] A quick-assembly and disassembly structure for heavy-duty molds includes a mounting mold frame and a heavy-duty mold mounted on the mounting mold frame. The mounting mold frame includes a lower mold base supporting the heavy-duty mold, an upper mold frame, and a wedge assembly wedged between the heavy-duty mold and the mounting mold frame. The heavy-duty mold has an upper mounting portion and a lower mounting portion. The upper mounting portion has an upper guide surface that slopes upwards towards both sides of the heavy-duty mold. The lower mounting portion has a lower guide surface that slopes downwards towards both sides of the heavy-duty mold. The upper mold frame has an upper mounting groove that engages and locks with the upper mounting portion. The lower mold base has a lower mounting groove that engages and locks with the lower mounting portion and a push-pull assembly slidably mounted on both sides of the lower mounting groove. The push-pull assembly includes an ejector unit arranged on one side of the lower mounting portion and a push-in unit on the other side. The ends of the ejector unit and the push-in unit are parallel to the corresponding lower guide surfaces.

[0008] By adopting the above technical solution, and by setting up a heavy-duty mold with inclined upper and lower guide surfaces, which cooperates with the corresponding mounting slots and wedge components on the mold frame, the principle of combined inclined surface guidance and wedge locking is used to achieve rapid, accurate positioning and secure locking of the heavy-duty mold on the mounting mold frame. Pushing components slidably mounted on both sides of the lower mounting slot are set up, and the heavy-duty mold is pushed in by the pushing unit, enabling the movement of heavy-duty molds with large weights, significantly improving the assembly efficiency of heavy-duty molds. During disassembly, the ejection unit pushes the heavy-duty mold out, with its end parallel to the lower guide surface. This allows the horizontal thrust to be decomposed into frictional force along the inclined surface through frictional decomposition, thus helping to convert the huge static friction between the lower guide surface and the wall of the lower mounting slot into dynamic friction, thereby increasing the probability and effectiveness of disassembly and reducing the labor intensity and safety risks for operators.

[0009] Optionally, the ejection unit includes an ejection drive and an ejection rod driven by the ejection drive; the number of ejection rods is not less than two and they are arranged at intervals; the pushing unit includes a pushing drive and a pushing rod driven by the pushing drive; the number of pushing rods is not less than two and they are arranged at intervals; the lower mounting part is provided with an ejection limiting groove corresponding to the ejection rod on the lower guide surface.

[0010] By adopting the above technical solution, and by setting at least two spaced ejector drive rods that cooperate with the corresponding ejector limiting grooves on the lower guide surface of the mold, an ejection force can be applied evenly and stably to the heavy mold, effectively reducing the probability of the heavy mold deflecting during disassembly and improving disassembly efficiency and effect. By setting at least two push rods, the heavy mold can be smoothly pushed into contact with the lower and upper mounting grooves under the drive of the push drive component, reducing the probability of jamming or tilting during the pushing process and improving the reliability and accuracy of the disassembly and assembly actions.

[0011] Optionally, the ejection unit further includes an ejection plate connected to the end of the ejection rod, an ejection guide rod installed on the ejection plate, and an ejection reset member sleeved on the ejection guide rod; the lower mold base has an ejection cavity for the ejection unit to be arranged and an ejection guide hole for the ejection guide rod to slide and cooperate; the pushing unit further includes a pushing plate connected to the end of the pushing rod, a pushing guide rod installed on the pushing plate, and a pushing reset member sleeved on the pushing guide rod; the lower mold base has a pushing cavity for the pushing unit to be arranged and a pushing guide hole for the pushing guide rod to slide and cooperate.

[0012] By adopting the above technical solutions, the ejector plate of the ejector unit is connected to the ejector rod, the ejector guide rod is installed on the ejector plate and fitted with an ejector reset component, and the lower mold base has an ejector cavity and an ejector guide hole, which allows for the arrangement of the ejector unit and the ejector guide rod to slide within the ejector guide hole, improving the stability and accuracy of the ejector rod movement. The ejector reset component allows the ejector unit to reset, reducing the impact on the installation of heavy molds. Similarly, the push-in unit's push-in plate is connected to the push-in rod, the push-in guide rod is installed on the push-in plate and fitted with a push-in reset component, and the lower mold base has a push-in cavity and a push-in guide hole, which allows for the arrangement of the push-in unit and the push-in guide rod to slide within the push-in guide hole, improving the stability and accuracy of the push-in rod movement. The push-in reset component allows the push-in unit to reset, making the structure more compact and integral, which is beneficial for the rapid and stable assembly and disassembly of heavy molds.

[0013] Optionally, a position indicator may also be included; the position indicator includes a scale fixed to the lower mold base, a pointer slider slidably mounted on one side of the scale, an ejection transmission rod connected to the ejection unit, and a push-in transmission rod connected to the push-in unit; the ejection transmission rod and the push-in transmission rod are respectively located on both sides of the pointer slider.

[0014] By adopting the above technical solution, a position indicator is set up. Utilizing a scale fixed to the lower mold base, a sliding pointer slider mounted on one side of the scale, and ejection and pushing transmission rods connecting the ejection and pushing units and located on either side of the pointer slider, the position of the pointer slider on the scale can visually display the displacement of the ejection and pushing units. This indicates the moving position of the mold, facilitating operators' understanding of the installation and disassembly positions of heavy-duty molds. It reduces equipment interference or mold damage caused by misjudgment of position, and improves the accuracy, safety, and efficiency of heavy-duty mold assembly and disassembly operations.

[0015] Optionally, the heavy-duty mold has an upper limit groove and a lower limit groove; the upper mold frame has an upper limit block that is inserted into the upper limit groove; the lower mold base has a lower limit block that is inserted into the lower limit groove and at least two positioning blocks that restrict the heavy-duty mold from sliding out; the positioning blocks are respectively disposed on both sides of the groove edge of the lower mounting groove.

[0016] By adopting the above technical solution, the upper limit groove of the heavy-duty mold is inserted into the upper limit block of the upper mold frame, and the lower limit groove is inserted into the lower limit block of the lower mold base. This allows for precise positioning of the heavy-duty mold on the mounting frame, improving installation accuracy and reducing the probability of mold torsion. The positioning blocks of the lower mold base are located on both sides of the groove edge of the lower mounting groove, which can restrict the sliding out of the heavy-duty mold and enhance the accuracy and stability of the heavy-duty mold's position after installation.

[0017] Optionally, the wedge assembly includes an upper wedge disposed in the upper mounting groove, a lower wedge disposed in the lower mounting groove, an upper wedge fastener for pushing the upper wedge into the space between the upper mounting groove and the heavy-duty mold, and a lower wedge fastener for pushing the lower wedge into the space between the lower mounting groove and the heavy-duty mold.

[0018] By adopting the above technical solution, the upper and lower wedges are pushed into the corresponding mounting slots and between the heavy mold and the heavy mold, respectively. This fills and locks the gap between the heavy mold and the upper and lower mounting slots, improving the connection rigidity and stability of the heavy mold during operation, enhancing the stability of mold installation, and helping to quickly complete the installation of the heavy mold.

[0019] Optionally, a linkage locking mechanism is provided between the upper wedge clamping member and the lower wedge clamping member; the linkage locking mechanism includes a linkage rod whose two ends are respectively connected to the upper wedge clamping member and the lower wedge clamping member, and a linkage driving member for driving the linkage rod to move.

[0020] By adopting the above technical solution, the linkage locking mechanism enables the upper and lower wedge clamping parts to work together. The linkage drive component drives the linkage rod, which can simultaneously push the upper and lower wedge blocks into the space between the upper mounting groove and the heavy mold, and between the lower mounting groove and the heavy mold, respectively. This achieves synchronous wedging of the upper and lower mounting parts of the heavy mold, which not only simplifies the operation steps, but also improves the efficiency and overall stability of the heavy mold installation, and reduces the probability that the wedging locking rate will affect the installation effect of the heavy mold.

[0021] Optionally, the lower mold base is provided with a guide frame at the entrance edge of the lower mounting groove; the guide frame has an upward-opening guide groove; the guide groove has two opposite guide ramps; the bottom of the guide groove is flush with the bottom of the lower mounting groove.

[0022] By adopting the above technical solution, during the installation of heavy molds, the guide slot and guide ramp of the guide frame can guide the heavy molds in the initial stage of hoisting and placing them, so that the lower installation part of the heavy mold can be smoothly aligned and enter the lower installation slot. This reduces the positioning difficulty of the heavy molds in the high-altitude hoisting state. The flat bottom of the slot improves the smoothness of the heavy mold lowering process, which is conducive to the rapid and accurate installation of heavy molds and improves the convenience and safety of installation.

[0023] Optionally, the guide frame includes a guide seat fixed to the lower mold base and a pair of guide sliders slidably disposed on the guide seat; the two guide inclined surfaces are respectively located on the inner sides of the two guide sliders; the bottom of the two guide sliders is provided with downwardly extending slider racks; an adjusting gear shaft that meshes with the two slider racks simultaneously is rotatably mounted on the base frame to drive the two guide sliders to move synchronously towards or away from each other.

[0024] By adopting the above technical solution, the guide seat is fixed on the mold base to ensure the stability of the guide frame, and the slidable guide slider can adjust the relative distance as needed. By adjusting the gear shaft and the slider rack, the two guide sliders can move synchronously towards or away from each other, flexibly adjusting the width of the guide groove to meet the guiding requirements of the lower mounting part of heavy molds of different sizes and shapes entering the lower mounting groove. This adapts to heavy molds of different sizes and specifications, enhancing the versatility and applicability of the structure and improving the utilization rate of the equipment. Furthermore, after the heavy mold is installed, the guide sliders on both sides can be slid closer together to limit the position of the heavy mold, improving the stability of the heavy mold installation.

[0025] Secondly, this application provides a quick assembly / disassembly method for heavy-duty molds, employing the aforementioned quick assembly / disassembly structure for heavy-duty molds, comprising the following steps:

[0026] During installation:

[0027] S1. Hoist the heavy mold to the top of the lower mold base, so that the lower mounting part of the heavy mold is aligned with the opening of the lower mounting slot;

[0028] S2. Lower the heavy mold into the lower mold base so that the lower mounting part is placed into the lower mounting groove; lower the upper mold frame so that the upper mounting part of the heavy mold is placed into the upper mounting groove.

[0029] S3. Start the push-in unit to push the heavy mold to one side along the lower mounting groove so that the lower guide surface of the heavy mold abuts against the groove wall of the lower mounting groove.

[0030] S4. During the movement, the wedge block assembly fills the gap between the heavy mold and the upper and lower mounting slots, wedging the upper mounting part of the heavy mold into the upper mounting slot and the lower mounting part into the lower mounting slot.

[0031] During disassembly:

[0032] S5. Remove the wedge assembly from the upper and lower mounting slots;

[0033] S6. Start the ejection unit and push the heavy mold along the lower mounting groove in the opposite direction to the installation direction until the lower guide surface is completely separated from the groove wall of the lower mounting groove, the upper guide surface is completely separated from the groove wall of the upper mounting groove, and the lower mounting part is located in the middle of the lower mounting groove.

[0034] S7. Raise the upper mold frame and lift the heavy mold from the lower mounting slot of the lower mold base.

[0035] By adopting the above technical solution, during installation, the heavy mold is hoisted to align the lower mounting part with the opening of the lower mounting slot. The heavy mold is then lowered onto the lower mold base, and the upper mold frame is lowered, which initially positions the heavy mold. The pushing unit is activated to push the heavy mold so that the lower guide surface abuts against the wall of the lower mounting slot. Simultaneously, the wedge assembly fills the gaps and wedges the heavy mold tightly, ensuring a secure installation. During disassembly, the wedge assembly is removed, the ejection unit is activated to push the heavy mold in the opposite direction until separation, the upper mold frame is raised, and the heavy mold is lifted away, enabling rapid disassembly of the heavy mold. This achieves the effect of rapid assembly and disassembly of the heavy mold, making the entire mold change process safe, efficient, and labor-saving, shortening downtime for heavy mold changes, and improving production efficiency.

[0036] In summary, this application includes at least one of the following beneficial technical effects:

[0037] A quick-assembly and disassembly structure for heavy-duty molds employs a mold with inclined guide surfaces that mates with wedge components. The upper and lower mounting sections of the mold are designed with inclined guide surfaces, which mate with corresponding mounting slots and insertable wedge components on the mold frame. Utilizing the principle of combined inclined guide and wedge filling and locking, the heavy-duty mold achieves rapid, precise positioning and rigid locking on the mounting mold frame. By designing bidirectional pushing components on both sides of the lower mounting slot, the ejection and pushing units provide stable thrust to the heavy-duty mold, making its movement on the mounting mold frame more stable and effective, significantly improving assembly and disassembly efficiency and operational stability.

[0038] By setting an adjustable guide frame structure at the entrance of the lower installation slot, and using a gear rack to drive the guide sliders on both sides to move synchronously, a guide slot with a variable opening size is formed. In the initial stage of hoisting heavy molds, guide slots with different opening sizes can guide the lower installation parts of different sizes to be accurately introduced, which significantly reduces the difficulty of alignment and adjustment time. It can also provide auxiliary limit after installation, thereby improving the equipment's versatility, safety and installation efficiency.

[0039] By setting up an upper wedge clamping member, a lower wedge clamping member, and a linkage locking mechanism that drives the upper and lower wedge clamping members, the upper and lower wedge blocks are pushed synchronously by a single drive component through the linkage rod. This facilitates the synchronous wedge clamping of the upper and lower mounting parts of the mold, reduces the problem of uneven load or asynchrony that may occur during step-by-step locking, improves the locking rigidity, simplifies the operation process, and improves the overall efficiency and reliability of disassembly and assembly operations.

[0040] A rapid assembly and disassembly method for heavy-duty molds breaks down the complex processes of hoisting, alignment, locking, and separation into sequential, controllable mechanical steps through a push-in unit, a wedge assembly, and an ejection unit. This replaces the arduous manual hammering and adjustment required in traditional methods, significantly reducing mold changeover time and downtime losses. By utilizing inclined upper and lower guide surfaces and the wedge-shaped force amplification principle, combined with the smooth linear thrust provided by the ejector assembly, the heavy-duty mold experiences uniform force during movement, locking, and separation. This reduces the probability of jamming and misalignment, improving the safety and accuracy of the heavy-duty mold installation process. It effectively reduces the technical dependence and labor intensity of operators, making the rapid assembly and disassembly of heavy-duty molds safe, labor-saving, and highly repeatable, thereby improving the overall efficiency of the production system. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the structure of the mounting frame and heavy mold in the embodiments of this application.

[0042] Figure 2 This is a schematic diagram of the structure of the heavy-duty mold in the embodiments of this application.

[0043] Figure 3 This is a schematic diagram of the structure of the lower mold base in an embodiment of this application.

[0044] Figure 4 This is a cross-sectional schematic diagram of the guide frame in an embodiment of this application.

[0045] Figure 5 This is a schematic diagram of the lower mounting part in an embodiment of this application.

[0046] Figure 6 This is a schematic diagram of the upper mold frame in an embodiment of this application.

[0047] Figure 7 This is a schematic diagram of the push-in unit in an embodiment of this application.

[0048] Figure 8 This is a schematic diagram of the ejection unit in an embodiment of this application.

[0049] Figure 9 This is a schematic diagram of the structure of the arrangement table in the embodiment of this application.

[0050] Figure 10 This is a schematic diagram of the linkage locking mechanism in the embodiments of this application.

[0051] Explanation of reference numerals in the attached drawings: 1. Mounting mold base; 11. Upper mold base; 111. Upper mounting slot; 112. Upper limit block; 12. Lower mold base; 121. Support platform; 122. Arrangement platform; 1221. Lower mounting slot; 1222. Push-in cavity; 1223. Push-in guide hole; 1224. Ejection cavity; 1225. Ejection guide hole; 123. Guide frame; 1231. Guide seat; 1232. Guide slider; 12321. Guide slope; 12322. Guide groove; 1233. 1234. Slider rack and pinion; 124. Adjusting gear; 125. Positioning block; 126. Lower limit block; 127. Pushing assembly; 1261. Ejection unit; 12611. Ejection drive; 12612. Ejection rod; 12613. Ejection plate; 12614. Ejection guide rod; 12615. Ejection reset component; 1262. Push-in unit; 12621. Push-in drive; 12622. Push-in rod; 12623. Push-in plate; 12624. Push-in guide rod; 12625. 13. Push-in reset component; 13. Wedge assembly; 131. Upper wedge; 132. Upper wedge clamping component; 1321. Upper pressing component; 13211. Upper arrangement slot; 1322. Upper drive rod; 13221. Upper transmission gear; 1323. Upper support tube; 133. Lower wedge; 134. Lower wedge clamping component; 1341. Lower pressing component; 13411. Lower arrangement slot; 1342. Lower drive rod; 13421. Lower transmission gear; 1343. Lower support tube; 135. Linkage locking mechanism; 1351 1. Linkage rod; 13511. Upper drive gear; 13512. Lower drive gear; 1352. Linkage drive component; 2. Heavy-duty mold; 21. Upper mounting part; 211. Upper guide surface; 212. Upper limit groove; 213. Upper reinforcing groove; 22. Lower mounting part; 221. Lower guide surface; 222. Lower limit groove; 223. Lower reinforcing groove; 224. Ejection limit groove; 3. Position indicator; 31. Scale; 32. Pointer slider; 33. Ejection transmission rod; 34. Push-in transmission rod. Detailed Implementation

[0052] The following is in conjunction with the appendix Figure 1-10 This application will be described in further detail.

[0053] This application discloses a quick-assembly and disassembly structure for heavy-duty molds. (Refer to...) Figure 1 A method for quick assembly and disassembly of heavy molds includes a mounting mold frame 1, a heavy mold 2 mounted on the mounting mold frame 1, and a position indicator 3 that assists in indicating the position of the heavy mold 2.

[0054] Reference Figure 2The heavy-duty mold 2 has an upper mounting portion 21 at the top and a lower mounting portion 22 at the bottom. The upper mounting portion 21 has an upper guide surface 211 that slopes upwards toward both sides of the heavy-duty mold 2, and the upper guide surface 211 is located on both sides of the upper mounting portion 21. The lower mounting portion 22 has a lower guide surface 221 that slopes downwards toward both sides of the heavy-duty mold 2, and the lower guide surface 221 is located on both sides of the lower mounting portion 22.

[0055] Reference Figure 1 and Figure 2 The mounting frame 1 includes a lower mold base 12 that supports the heavy mold 2, an upper mold frame 11, and a wedge assembly 13 that weds into the heavy mold 2 and the mounting frame 1.

[0056] Reference Figure 2 and Figure 3 The lower mold base 12 includes a support platform 121 at the bottom and an arrangement platform 122 for mounting the heavy mold 2. The arrangement platform 122 has a lower mounting groove 1221 in the horizontal direction. The two ends of the lower mounting groove 1221 are adapted to the two ends of the lower mounting part 22, and the width of the groove is greater than the maximum width of the lower mounting part 22, so as to facilitate the placement of the heavy mold 2.

[0057] Reference Figure 3 and Figure 4 The lower mold base 12 is equipped with a guide frame 123 at the entrance edge of the lower mounting groove 1221. The guide frame 123 includes a guide seat 1231 fixed to the lower mold base 12 and a pair of guide sliders 1232 slidably disposed on the guide seat 1231. The guide frame 123 has an upward-opening guide groove 12322 to guide the installation of the heavy-duty mold 2. The inner surfaces of the two guide sliders 1232 form two opposing guide ramps 12321 of the guide groove 12322, and the bottom of the guide groove 12322 is flush with the bottom of the lower mounting groove 1221, making the movement of the heavy-duty mold 2 smoother. The bottom of each of the two guide sliders 1232 is connected to a horizontally arranged slider rack 1233. An adjusting gear 1234 is installed on the lower mold base 12, which meshes with both slider racks 1233 simultaneously.

[0058] Reference Figure 2 and Figure 4 By rotating the adjusting gear 1234, the two guide sliders 1232 can be driven to move synchronously towards or away from each other, thereby adjusting the opening width of the guide groove 12322 to accommodate the insertion requirements of the lower mounting part 22 of heavy molds 2 of different sizes. The adjusting gear 1234 can be rotated manually or precisely controlled by an electric drive device.

[0059] Reference Figure 1 and Figure 3The lower mold base 12 also has at least one positioning block 124 installed on each side of the lower mounting groove 1221. When the heavy mold 2 is placed into the lower mounting groove 1221, the positioning blocks 124 on both sides can restrict the heavy mold 2 from excessive movement in the lower mounting groove 1221 from the opposite side of the mounting side, reducing the probability of the heavy mold 2 sliding out of the lower mounting groove 1221 and improving positioning accuracy and safety. In this embodiment, there are two positioning blocks 124, which are respectively arranged on both sides of the lower mounting groove 1221.

[0060] Reference Figure 3 and Figure 5 The heavy-duty mold 2 has a lower limiting groove 222 on one side of the lower mounting part 22, and a wedge-shaped lower reinforcing groove 223 is also provided in the lower limiting groove 222. The lower mold base 12 has a lower limiting block 125 installed at the bottom of the lower mounting groove 1221, which cooperates with the lower limiting groove 222 of the heavy-duty mold 2. When the heavy-duty mold 2 moves to fit against the groove wall of the lower mounting groove 1221, the lower limiting block 125 can be inserted into the lower limiting groove 222 to limit the heavy-duty mold 2.

[0061] Reference Figure 2 and Figure 6 The heavy-duty mold 2 has an upper limit groove 212 on one side of the upper mounting part 21, and a wedge-shaped upper reinforcing groove 213 is also provided in the upper limit groove 212. The upper mold frame 11 has an upper mounting groove 111 that mates with the upper mounting part 21. The groove wall of the upper mounting groove 111 is parallel to the upper guide surface 211 of the upper mounting part 21. An upper limit block 112 that mates with the upper limit groove 212 is installed on the top of the upper mounting groove 111 of the upper mold frame 11. When the heavy-duty mold 2 moves to fit against the groove wall of the upper mounting groove 111, the upper limit block 112 can be inserted into the upper limit groove 212 to limit the heavy-duty mold 2.

[0062] Reference Figure 2 and Figure 5 The upper limit groove 212 and the lower limit groove 222 are located on the same side of the moving direction when the heavy mold 2 is installed.

[0063] Reference Figure 1 and Figure 3 The lower mold base 12 is provided with push-up assemblies 126 that are slidably mounted on both sides of the lower mounting groove 1221. The push-up assembly 126 includes an ejection unit 1261 arranged on one side of the lower mounting portion 22 and a push-in unit 1262 on the other side. The push-in unit 1262 is located on the push-in side when the heavy mold 2 is installed in the lower mounting groove 1221, and the ejection unit 1261 is located on the ejection side when the heavy mold 2 is disassembled in the lower mounting groove 1221. The push-in unit 1262 and the ejection unit 1261 are symmetrical with respect to the center of the lower mounting groove 1221.

[0064] Reference Figure 3 and Figure 7 The push-in unit 1262 includes a push-in drive member 12621, a push-in rod 12622 driven by the push-in drive member 12621, a push-in plate 12623 connected to the end of the push-in rod 12622, a push-in guide rod 12624 mounted on the push-in plate 12623, and a push-in reset member 12625 sleeved on the push-in guide rod 12624.

[0065] Reference Figure 3 and Figure 7 The lower mold base 12 has a push-in cavity 1222 for arranging the push-in unit 1262 and a push-in guide hole 1223 for sliding engagement with the push-in guide rod 12624. The push-in plate 12623 is connected to the output end of the push-in drive member 12621. The output end of the push-in drive member 12621 extends out and can drive the push-in rod 12622 to extend relative to the groove wall of the lower mounting groove 1221. In this embodiment, the push-in drive member 12621 is a hydraulic cylinder, and any power component capable of enabling the push-in rod 12622 to extend and push the heavy mold 2 for installation can be used as a substitute.

[0066] Reference Figure 5 and Figure 7 The number of push rods 12622 is not less than two and they are arranged at intervals. The end face of the push rod 12622 is parallel to the inclined lower guide surface 221, so that when the push rod 12622 abuts against the lower guide surface 221, the end face of the push rod 12622 can completely fit against the lower guide surface 221, forming a frictional force along the inclined direction of the lower guide surface 221, reducing the probability of the push rod 12622 slipping on the lower guide surface 221, and improving the pushing effect of the push rod 12622 on the lower mounting part 22. In this embodiment of the application, the number of push rods 12622 is two.

[0067] Reference Figure 3 and Figure 7 A push-in guide hole 1223 is formed between the push-in cavity 1222 and the lower mounting groove 1221, penetrating both to allow the push-in rod 12622 to extend from the push-in cavity 1222 into the lower mounting groove 1221. At least one push-in guide rod 12624 is parallel to the push-in rod 12622, with one end connected to the push-in plate 12623. When the push-in plate 12623 moves, it can drive the push-in guide rod 12624 to move until the end of the push-in guide rod 12624 abuts against the side wall of the push-in cavity 1222. The push-in plate 12623 is blocked by the push-in guide rod 12624 and cannot continue to move, thus stopping the push-in rod 12622. In this embodiment, there are two push-in guide rods 12624, both arranged between the two push-in rods 12622.

[0068] Reference Figure 3 and Figure 7Each push-in guide rod 12624 is fitted with a push-in reset member 12625. One end of the push-in reset member 12625 is connected to the push-in plate 12623, and the other end is connected to the side wall of the push-in cavity 1222. When the output end of the push-in drive member 12621 extends, the push-in plate 12623 compresses the push-in reset member 12625; when the output end of the push-in drive member 12621 retracts, the push-in reset member 12625 can push the push-in plate 12623 out and reset it. In this embodiment, the push-in reset member 12625 is a spring.

[0069] Reference Figure 8 and Figure 9 The ejection unit 1261 includes an ejection drive 12611, an ejection rod 12612 driven by the ejection drive 12611, an ejection plate 12613 connected to the end of the ejection rod 12612, an ejection guide rod 12614 mounted on the ejection plate 12613, and an ejection reset member 12615 sleeved on the ejection guide rod 12614. The lower mold base 12 has an ejection cavity 1224 for the ejection unit 1261 to be arranged and an ejection guide hole 1225 for the ejection guide rod 12614 to slide and engage. The ejection plate 12613 is connected to the output end of the ejection drive 12611, and the output end of the ejection drive 12611 extends out to drive the ejection rod 12612 to extend out from the groove wall of the lower mounting groove 1221. In this embodiment, the ejector drive 12611 is a hydraulic cylinder, and any drive that can extend and retract the ejector rod 12612 to disassemble the heavy mold 2 can be used as a replacement.

[0070] Reference Figure 5 and Figure 8 There are at least two ejector rods 12612, arranged at intervals. The end face of the ejector rod 12612 is parallel to the inclined lower guide surface 221, so that when the ejector rod 12612 abuts against the lower guide surface 221, the end face of the ejector rod 12612 can completely fit against the lower guide surface 221, forming a frictional force along the inclined direction of the lower guide surface 221. The lower mounting part 22 is located on the lower guide surface 221 and is also provided with an ejection limiting groove 224 corresponding to the ejector rod 12612. When the ejector rod 12612 extends, it can be inserted into the ejection limiting groove 224. The groove wall of the ejection limiting groove 224 can abut against the rod wall at the end of the ejector rod 12612, reducing the probability of the ejector rod 12612 sliding on the lower guide surface 221 and improving the pushing effect of the ejector rod 12612 on the lower mounting part 22. In this embodiment of the application, there are two ejector rods 12612.

[0071] Reference Figure 8 and Figure 9An ejector guide hole 1225 is formed between the ejector cavity 1224 and the lower mounting groove 1221, penetrating both to allow the ejector rod 12612 to extend from the ejector cavity 1224 into the lower mounting groove 1221. At least one ejector guide rod 12614 is parallel to the ejector rod 12612, with one end connected to the ejector plate 12613. When the ejector plate 12613 moves, it can drive the ejector guide rod 12614 to move until the end of the ejector guide rod 12614 abuts against the side wall of the ejector cavity 1224. The ejector plate 12613 is blocked by the ejector guide rod 12614 and cannot continue to move, thus stopping the ejector rod 12612. In this embodiment, there are two ejector guide rods 12614, both arranged between the two ejector rods 12612.

[0072] Reference Figure 8 and Figure 9 Each ejector guide rod 12614 is fitted with an ejector reset member 12615. One end of the ejector reset member 12615 is connected to the ejector plate 12613, and the other end is connected to the side wall of the ejector cavity 1224. When the output end of the ejector drive member 12611 extends, the ejector plate 12613 compresses the ejector reset member 12615; when the output end of the ejector drive member 12611 retracts, the ejector reset member 12615 can push the ejector plate 12613 out and reset it. In this embodiment, the ejector reset member 12615 is a spring.

[0073] Reference Figure 3 and Figure 10 The wedge assembly 13 includes an upper wedge 131 inserted into the gap of the upper mounting groove 111 and a lower wedge 133 inserted into the gap of the lower mounting groove 1221. The upper mold base 11 is detachably equipped with an upper wedge clamping member 132 that pushes the upper wedge 131 into the gap between the upper mounting groove 111 and the heavy-duty mold 2. The lower mold base 12 is detachably equipped with a lower wedge clamping member 134 that pushes the lower wedge 133 into the gap between the lower mounting groove 1221 and the heavy-duty mold 2. A linkage locking mechanism 135 is provided between the upper wedge clamping member 132 and the lower wedge clamping member 134. The linkage locking mechanism 135 includes a linkage rod 1351 whose two ends are respectively connected to the upper wedge clamping member 132 and the lower wedge clamping member 134, and a linkage drive member 1352 that drives the linkage rod 1351 to move. In this embodiment, the linkage drive component 1352 is a motor, and the linkage rod 1351 is a rod with a drive gear. The output end of the motor is connected to the end of the linkage rod 1351 to drive the linkage rod 1351 to rotate.

[0074] Reference Figure 1 and Figure 10The upper wedge clamping member 132 includes an upper pressing member 1321 that fits against the end of the upper wedge block 131, an upper driving rod 1322 that drives the upper pressing member 1321 to move, and an upper support tube 1323 that is detachably installed on the upper mold frame 11. The upper pressing member 1321 has an upper arrangement groove 13211 along the length direction of the upper support tube 1323 for the upper driving rod 1322 to thread through. The lower wedge clamping member 134 includes a lower pressing member 1341 that fits against the end of the lower wedge block 133, a lower driving rod 1342 that drives the lower pressing member 1341 to move, and a lower support tube 1343 that is detachably installed on the lower mold frame. The lower pressing member 1341 has a lower arrangement groove 13411 along the length direction of the lower support tube 1343 for the lower driving rod 1342 to thread through. The upper drive rod 1322 has an upper transmission gear 13221 at its end, and the lower drive rod 1342 has a lower transmission gear 13421 at its end. The linkage rod 1351 has an upper drive gear 13511 that meshes with the upper transmission gear 13221 and a lower drive gear 13512 that meshes with the lower transmission gear 13421. When the linkage drive member 1352 drives the linkage rod 1351 to rotate, the upper drive gear 13511 transmits torque to the upper drive rod 1322, thereby driving the upper pressure member 1321 to push the upper wedge block 131 in. The lower drive gear 13512 transmits torque to the lower drive rod 1342, thereby driving the lower pressure member 1341 to push the lower wedge block 133 in, thus achieving a tight connection between the heavy mold 2 and the mounting mold frame 1.

[0075] Reference Figure 1 The position indicator 3 includes a scale 31 fixedly mounted on the side of the lower mold base 12, a pointer slider 32 slidably mounted on one side of the scale 31, an ejection transmission rod 33 connected to the ejection unit 1261, and an insertion transmission rod 34 connected to the insertion unit 1262. The ends of the ejection transmission rod 33 and the insertion transmission rod 34 are located on both sides of the pointer slider 32. When the ejection unit 1261 or the insertion unit 1262 is activated, the pointer slider 32 can be pushed along the scale 31 by the corresponding transmission rod. The operator can directly read the scale value indicated by the pointer slider 32 and determine the real-time position of the heavy mold 2.

[0076] Combination Figures 1 to 10The implementation principle of a quick-assembly and disassembly structure for heavy-duty molds in this application embodiment is as follows: During installation, the width of the guide groove 12322 on the guide frame 123 is adjusted, and the lower mounting part 22 of the heavy-duty mold 2 is smoothly guided into the lower mounting groove 1221 through the guide inclined surface 12321; multiple push rods of the pushing unit 1262 abut against the lower guide surface 221 of the mold in parallel, providing a stable horizontal thrust, driving the mold to slide along the groove to the corresponding position; the upper wedge clamping member 132 and the lower wedge clamping member 134 are driven synchronously through the linkage drive mechanism, pressing the upper wedge block 131 and the lower wedge block 133 into the newly formed gap between the mold and the mounting groove from the opposite direction of the movement of the heavy-duty mold 2. During disassembly, the upper wedge block 131 and the lower wedge block 133 are pushed out to release the locking. Multiple push rods of the ejection unit 1261 abut against the inclined lower guide surface 221 of the heavy-duty mold 2. Its horizontal thrust is decomposed through the inclined surface, generating a vertical component force that helps overcome static friction, thereby more effectively starting the mold and allowing it to move smoothly back to the middle position of the installation groove width, achieving safe separation.

[0077] This application also discloses a method for rapid assembly and disassembly of heavy-duty molds. (Refer to...) Figures 1 to 10 ,

[0078] During installation:

[0079] S1. According to the dimensions of the heavy-duty mold 2 to be installed, the operator rotates the adjusting gear 1234 shaft to adjust the two guide sliders 1232 of the guide frame 123 to a suitable distance. Then, the heavy-duty mold 2 is hoisted to the top of the lower mold base 12 using hoisting equipment and slowly lowered. The two guide ramps 12321 automatically guide the lower mounting part 22 to be aligned, so that the lower mounting part 22 of the heavy-duty mold 2 is aligned with the guide groove 12322 of the guide frame 123. At this time, since the opening of the guide groove 12322 is consistent with the opening of the lower mounting groove 1221, the lower mounting part 22 of the heavy-duty mold 2 is moved along the length direction of the lower mounting groove 1221 to align with the opening of the lower mounting groove 1221.

[0080] S2. The hoisting equipment lowers the heavy mold 2 into the lower mold base 12, so that the lower mounting part 22 is placed into the lower mounting groove 1221. The upper mold frame 11 is lowered, so that the upper mounting part 21 of the mold enters the upper mounting groove 111 of the upper mold frame 11, and at the same time the upper limit block 112 is inserted into the upper limit groove 212, completing the initial installation of the heavy mold 2 in the lower mounting groove 1221.

[0081] S3. Start the pushing unit 1262. The pushing drive 12621 extends and drives all the pushing rods 12622 to move forward synchronously through the pushing plate 12623. The ends of the pushing rods 12622 abut against the lower guide surface 221 of the mold, generating a smooth horizontal thrust. Under this thrust, the heavy mold 2 slides along the lower mounting groove 1221 towards the pushing side until the upper guide surface 211 of the upper mounting part 21 abuts against the groove wall of the upper mounting groove 111, and the lower guide surface 221 of the lower mounting part 22 abuts against the groove wall of the lower mounting groove 1221. Since the lower guide surface 221 is inclined, the mold will have a slight upward tendency while moving horizontally, which reduces the friction between the lower mounting part 22 and the bottom surface of the lower mounting groove 1221, making it easier to move.

[0082] S4. During the movement, the wedge assembly 13 fills the gap between the heavy-duty mold 2 and the upper mounting groove 111 and the lower mounting groove 1221, wedging the upper mounting part 21 of the heavy-duty mold 2 into the upper mounting groove 111 and the lower mounting part 22 into the lower mounting groove 1221. During the movement of the heavy-duty mold 2, the linkage drive 1352 is operated, and the upper wedge clamping part 132 and the lower wedge clamping part 134 are driven to move synchronously through the linkage rod 1351. The upper wedge 131 is pushed from the front into the gap between the upper mounting part 21 and the upper mounting groove 111, and the lower wedge 133 is pushed from the front into the gap between the lower mounting part 22 and the lower mounting groove 1221. Under the action of the inclined plane, the upper wedge 131 and the lower wedge 133 become tighter and tighter, finally locking the heavy-duty mold 2 firmly in the mounting mold frame 1. During the installation process, the displacement of the pointer slider 32 on the position indicator 3 can be observed to confirm whether the heavy-duty mold 2 has moved into place.

[0083] During disassembly:

[0084] S5. Remove the upper wedge 131 from the locking position of the upper mounting groove 111 and remove the lower wedge 133 from the locking position of the lower mounting groove 1221, thereby releasing the rigid constraint on the heavy mold 2. At this time, a gap is generated between the heavy mold 2 and the groove walls of the upper mounting groove 111 and the lower mounting groove 1221.

[0085] S6. Activate the ejection unit 1261. The ejection drive 12611 extends, driving the ejection rod 12612 to move in the opposite direction to the insertion direction during installation. The end of the ejection rod 12612 rests parallel to the ejection limiting groove 224 in the lower guide surface 221 of the heavy-duty mold 2. Due to the inclination of the lower guide surface 221, the horizontal thrust applied by the ejection rod 12612 can be decomposed into a normal force perpendicular to the inclined plane and an upward component force along the inclined plane. This upward component force helps overcome the friction generated by the weight of the mold, while the horizontal thrust directly resists the huge static friction between the heavy-duty mold 2 and the groove wall. This allows the ejection force to be applied more effectively to the heavy-duty mold 2. Under the steady push of the ejector rod 12612, the heavy mold 2 slides along the lower mounting groove 1221 toward the ejection side until its upper guide surface 211 is completely separated from the groove wall of the upper mounting groove 111 and its lower guide surface 221 is completely separated from the groove wall of the lower mounting groove 1221, and the lower mounting part 22 of the heavy mold 2 returns to the middle position of the width of the mounting groove.

[0086] S7. Raise the upper mold frame 11 to separate it from the upper mounting part 21 of the heavy mold 2. At this time, the heavy mold 2 is only supported by the lower mold base 12. By operating the hoisting equipment, the heavy mold 2 can be smoothly lifted away from the lower mounting groove 1221 of the lower mold base 12, completing the disassembly operation of the heavy mold 2.

[0087] Combination Figures 1 to 10 The implementation principle of a rapid assembly and disassembly method for heavy-duty molds in this application embodiment is as follows: During installation, firstly, the width of the guide frame 123 is adjusted according to the size of the heavy-duty mold 2. The heavy-duty mold 2 is hoisted so that its lower mounting part 22 is guided into the lower mounting groove 1221 via the guide inclined surface 12321 and initially positioned. The pushing unit 1262 is activated, and its push rod acts parallel to the lower guide surface 221 of the heavy-duty mold 2, providing a stable horizontal thrust, driving the heavy-duty mold 2 to slide along the groove until the upper and lower guide surfaces 221 are tightly fitted with the walls of the mounting groove. During this movement, the linkage drive component 1352 moves synchronously, pressing the upper wedge block 131 and the lower wedge block 133 from the same side into the newly formed gap between the heavy-duty mold 2 and the groove walls of the upper mounting groove 111 and the lower mounting groove 1221, using the wedge principle to achieve the final rigid locking of the heavy-duty mold 2. The entire process is monitored in real time by the position indicator 3.

[0088] Disassembly is the reverse of installation. The upper wedge 131 retracts from the upper mounting slot 111, and the lower wedge 133 retracts from the lower mounting slot 1221 to release the locking of the heavy mold 2. The ejection unit 1261 is activated, and the ejection rod 12612 acts on the lower guide surface 221 on the other side of the heavy mold 2. The horizontal thrust is decomposed by the inclined plane, generating a vertical component force that helps overcome gravity and static friction, thereby smoothly pushing the heavy mold 2 back to the middle position of the width of the lower mounting slot 1221. Finally, the upper mold frame 11 is raised to safely lift the heavy mold 2 away.

[0089] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A quick-assembly and disassembly structure for heavy-duty molds, characterized in that, The assembly includes a mounting frame (1) and a heavy-duty mold (2) mounted on the mounting frame (1); the mounting frame (1) includes a lower mold base (12) supporting the heavy-duty mold (2), an upper mold frame (11), and a wedge assembly (13) wedged between the heavy-duty mold (2) and the mounting frame (1); the heavy-duty mold (2) has an upper mounting portion (21) and a lower mounting portion (22); the upper mounting portion (21) has an upper guide surface (211) inclined from bottom to top toward both sides of the heavy-duty mold (2); the lower mounting portion (22) has a lower guide surface inclined from top to bottom toward both sides of the heavy-duty mold (2). (221); The upper mold frame (11) has an upper mounting groove (111) that is locked to the upper mounting part (21); The lower mold base (12) has a lower mounting groove (1221) that is locked to the lower mounting part (22) and a push assembly (126) that is slidably mounted on both sides of the lower mounting groove (1221); The push assembly (126) includes an ejection unit (1261) arranged on one side of the lower mounting part (22) and a push-in unit (1262) on the other side; The ends of the ejection unit (1261) and the push-in unit (1262) are parallel to the corresponding lower guide surface (221).

2. The quick-assembly and disassembly structure for heavy-duty molds according to claim 1, characterized in that, The ejection unit (1261) includes an ejection drive (12611) and an ejection rod (12612) driven by the ejection drive (12611); the number of ejection rods (12612) is not less than two and they are arranged at intervals; the push-in unit (1262) includes a push-in drive (12621) and a push-in rod (12622) driven by the push-in drive (12621); the number of push-in rods (12622) is not less than two and they are arranged at intervals; the lower mounting part (22) is located on the lower guide surface (221) and has an ejection limiting groove (224) corresponding to the ejection rod (12612).

3. The quick-assembly and disassembly structure for heavy-duty molds according to claim 2, characterized in that, The ejection unit (1261) further includes an ejection plate (12613) connected to the end of the ejection rod (12612), an ejection guide rod (12614) mounted on the ejection plate (12613), and an ejection reset member (12615) sleeved on the ejection guide rod (12614); the lower mold base (12) has an ejection cavity (1224) for the ejection unit (1261) to be arranged and an ejection guide hole (1225) for the ejection guide rod (12614) to slide and cooperate. The push-in unit (1262) further includes a push-in plate (12623) connected to the end of the push-in rod (12622), a push-in guide rod (12624) mounted on the push-in plate (12623), and a push-in reset member (12625) sleeved on the push-in guide rod (12624); the lower mold base (12) has a push-in cavity (1222) for the push-in unit (1262) to be arranged and a push-in guide hole (1223) for the push-in guide rod (12624) to slide and cooperate.

4. The quick-assembly and disassembly structure for heavy-duty molds according to claim 1, characterized in that, It also includes a position indicator (3); the position indicator (3) includes a scale (31) fixed to the lower mold base (12), a pointer slider (32) slidably mounted on one side of the scale (31), an ejection transmission rod (33) connected to the ejection unit (1261), and a push-in transmission rod (34) connected to the push-in unit (1262); the ejection transmission rod (33) and the push-in transmission rod (34) are respectively located on both sides of the pointer slider (32).

5. The quick-assembly and disassembly structure for heavy-duty molds according to claim 1, characterized in that, The heavy-duty mold (2) is provided with an upper limit groove (212) and a lower limit groove (222); the upper mold frame (11) is provided with an upper limit block (112) that is inserted into the upper limit groove (212); the lower mold base (12) is provided with a lower limit block (125) that is inserted into the lower limit groove (222) and at least two positioning blocks (124) that restrict the heavy-duty mold (2) from sliding out; the positioning blocks (124) are respectively disposed on both sides of the groove edge of the lower mounting groove (1221).

6. The quick-assembly and disassembly structure for heavy-duty molds according to claim 1, characterized in that, The wedge assembly (13) includes an upper wedge (131) disposed in the upper mounting groove (111), a lower wedge (133) disposed in the lower mounting groove (1221), an upper wedge fastener (132) for pushing the upper wedge (131) between the upper mounting groove (111) and the heavy mold (2), and a lower wedge fastener (134) for pushing the lower wedge (133) between the lower mounting groove (1221) and the heavy mold (2).

7. A quick-assembly and disassembly structure for heavy-duty molds according to claim 6, characterized in that, A linkage locking mechanism (135) is provided between the upper wedge clamping member (132) and the lower wedge clamping member (134); the linkage locking mechanism (135) includes a linkage rod (1351) whose two ends are respectively connected to the upper wedge clamping member (132) and the lower wedge clamping member (134), and a linkage driving member (1352) for driving the linkage rod (1351) to move.

8. A quick-assembly and disassembly structure for heavy-duty molds according to claim 1, characterized in that, The lower mold base (12) is provided with a guide frame (123) at the entrance edge of the lower mounting groove (1221); the guide frame (123) has an upward-opening guide groove (12322); the guide groove (12322) has two opposite guide inclined surfaces (12321); the bottom of the guide groove (12322) is flush with the bottom of the lower mounting groove (1221).

9. A quick-assembly and disassembly structure for heavy-duty molds according to claim 8, characterized in that, The guide frame (123) includes a guide seat (1231) fixed to the lower mold base (12) and a pair of guide sliders (1232) slidably disposed on the guide seat (1231); the two guide inclined surfaces (12321) are respectively located on the inner sides of the two guide sliders (1232); the bottom of the two guide sliders (1232) is provided with downwardly extending slider racks (1233); the lower mold base (12) is rotatably mounted with an adjusting gear (1234) shaft that meshes with the two slider racks (1233) simultaneously to drive the two guide sliders (1232) to move synchronously towards or away from each other.

10. A method for rapid assembly and disassembly of heavy-duty molds, characterized in that, The quick-assembly and disassembly structure for heavy-duty molds according to any one of claims 1-9 includes the following steps: During installation: S1. Hoist the heavy mold (2) to the top of the lower mold base (12) so that the lower mounting part (22) of the heavy mold (2) is aligned with the opening of the lower mounting groove (1221); S2. Lower the heavy mold (2) into the lower mold base (12) so that the lower mounting part (22) is placed into the lower mounting groove (1221); lower the upper mold frame (11) so that the upper mounting part (21) of the heavy mold (2) is placed into the upper mounting groove (111); S3. Start the push-in unit (1262) to push the heavy mold (2) to move to one side along the lower mounting groove (1221) so that the lower guide surface (221) of the heavy mold (2) abuts against the groove wall of the lower mounting groove (1221); S4. During the movement, the wedge assembly (13) fills the gap between the heavy mold (2) and the upper mounting groove (111) and the lower mounting groove (1221), wedging the upper mounting part (21) of the heavy mold (2) into the upper mounting groove (111) and the lower mounting part (22) into the lower mounting groove (1221). During disassembly: S5. Remove the wedge assembly (13) from the upper mounting slot (111) and the lower mounting slot (1221); S6. Start the ejection unit (1261) and push the heavy mold (2) along the lower mounting groove (1221) in the opposite direction to the installation direction until the lower guide surface (221) is completely separated from the groove wall of the lower mounting groove (1221), the upper guide surface (211) is completely separated from the groove wall of the upper mounting groove (111), and the lower mounting part (22) is located in the middle of the lower mounting groove (1221); S7. Raise the upper mold frame (11) and lift the heavy mold (2) from the lower mounting slot (1221) of the lower mold base (12).

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