Mold assembly for oversized rock plate production
The mechanical transmission design, which uses a motor-driven rotating screw in conjunction with a deflection gear, solves the problem of uneven ejection force in the production of ultra-large slabs, achieving uniform ejection of the slabs, reducing cracking and deformation, and improving production efficiency and product quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN XINPENG IND SERVICE CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-05-19
AI Technical Summary
Traditional molds are difficult to use to achieve uniform ejection in the production of ultra-large slabs, which can lead to cracking or deformation of the slabs.
The rotating screw driven by an electric motor is coupled with a symmetrical deflection gear. Through mechanical transmission design, the synchronous movement of the push rod is ensured. The movement trajectory is constrained by the limit sleeve and support seat, and the rotational motion is converted into vertical lifting motion, so as to achieve uniform distribution of the push force.
It effectively reduces slab cracking or deformation, improves product yield and production continuity, and ensures the stability and reliability of the demolding process.
Smart Images
Figure CN224255649U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of slab processing, and in particular to a mold assembly for producing ultra-large slabs. Background Technology
[0002] In the production of ultra-large slabs of porcelain, the design of the mold assembly directly affects product quality and production efficiency. In existing technologies, the difficulty in removing the slab after mold closing is particularly prominent, mainly in the following aspects:
[0003] Traditional molds often employ a single hydraulic or mechanical ejection device, such as a hydraulic telescopic rod or a spring-driven ejection mechanism. However, for ultra-large slabs, such structures are prone to uneven distribution of ejection force, leading to slab cracking or deformation. For example, when the slab size exceeds 1600×3200mm, traditional ejector systems struggle to apply force synchronously across the entire slab surface, and localized stress concentrations can cause irreversible damage. Based on this, we propose a mold assembly for the production of ultra-large slabs. Utility Model Content
[0004] To address the technical problem that traditional ejection devices easily damage slabs, this utility model provides a mold assembly for producing ultra-large slabs.
[0005] This utility model is achieved using the following technical solution: A mold assembly for producing ultra-large-size slabs, comprising an upper mold and a lower mold. The lower mold contains a slab lifting mechanism, which includes a mounting bracket. A motor is fixedly mounted at the bottom of the mounting bracket. The motor's output shaft is connected to a rotating screw. Two sets of deflecting gears are meshed symmetrically on both sides of the rotating screw. The rotation of the rotating screw drives the deflecting gears on both sides to rotate synchronously. A rotating rod passes through the center of each deflecting gear. Limiting sleeves are rotatably fitted onto the surfaces of both ends of the rotating rod. The bottom end of the limiting sleeves is fixedly connected to the mounting bracket.
[0006] The upper mold and the lower mold are equipped with a mold closing and pressing mechanism. The mold closing and pressing mechanism includes a support base. The lower mold is installed on the upper part of the support base. A support column is fixedly connected to the upper part of the support base. A mounting plate is fixedly connected to the top of the support column. A hydraulic push rod is fixedly connected to the mounting plate. The output end of the hydraulic push rod is fixedly connected to the upper mold.
[0007] The raw materials used to produce slabs are placed in the cavity of the lower mold. The raw materials accumulate on the surface of the lifting plate. By operating the hydraulic push rod, the hydraulic push rod is pressed down, which allows the upper mold to enter the interior of the lower mold. Under the pressure of the hydraulic push rod, the upper mold can press the raw materials inside the lower mold into shape.
[0008] Motor start-up: After the motor at the bottom of the mounting bracket is powered on, the output shaft drives the rotating screw to rotate.
[0009] Gear meshing transmission: Two sets of deflecting gears symmetrically meshing on the outside of the rotating screw rotate synchronously, utilizing the stability of gear transmission to ensure consistent power on both sides.
[0010] Rotating rod linkage: The deflection gear transmits torque through the rotating rod that runs through the center. The rotating rod remains axially stable under the constraint of the limiting sleeve, preventing deviation.
[0011] The top of both ends of the rotating rod is fixedly connected to a screw sleeve, and a deflection frame is fixedly connected to the outside of the screw sleeve. A buckle frame is integrally formed on the deflection frame, and the buckle frame has a U-shaped groove. The shaft moves inside the U-shaped groove of the buckle frame.
[0012] The inner side of the buckle bracket holds the shaft, and the outer side of the shaft is fixedly connected to the top rod. The top rod is slidably connected inside the support base, and the side of the support base has a sliding groove. The inside of the support base is hollow cylindrical, while the top rod is solid cylindrical. The top rod is inserted into the inside of the support base for lifting and lowering.
[0013] The screw sleeve rotates synchronously with the rod body, causing the outer fixed deflector frame to swing around the axis of the rotating rod. The buckle frame on the deflector frame clamps the shaft through a U-shaped slot. When the deflector frame swings, the shaft slides in the slot, converting the rotational motion into the vertical lifting motion of the push rod. The push rod is inserted into the hollow columnar structure of the support base and moves vertically along the sliding groove, ensuring a smooth and non-deviation-free lifting process.
[0014] As a further optimization of this utility model, the motor-driven lifting mechanism enables the lifting plate to lift the rock slab at a uniform speed. The synchronicity of the mechanical transmission ensures that the overall force on the ultra-large rock slab is uniform, reducing cracking or deformation caused by local stress, and achieving efficient and non-destructive demolding.
[0015] As a further optimization of this utility model, the synchronous movement of the two push rods is ensured by the cooperation of the rotating screw and the symmetrical deflection gear, thus solving the problem of uneven power in the traditional ejection device.
[0016] As a further optimization of this utility model, the structural design of the limiting sleeve and the support seat constrains the movement trajectory of the rotating rod and the top rod, thereby improving the stability of the mechanism.
[0017] As a further optimization of this utility model, the sliding connection between the buckle frame and the shaft is used to flexibly convert the rotational motion into vertical lifting motion, which can meet the demolding stroke requirements of ultra-large slabs.
[0018] As a further optimization of this utility model, a lifting plate is fixedly connected to the top of the top rod. The lifting plate is located at the bottom of the lower mold and fits against the side wall of the lower mold. The rock slab to be processed is placed on the surface of the lifting plate, and the upper mold and lower mold are closed for processing.
[0019] As a further optimization of this utility model, the lifting plate at the top of the top rod contacts the bottom surface of the rock slab, and multiple sets of top rods achieve horizontal lifting of the lifting plate through synchronous transmission, thus avoiding the stress concentration problem of traditional single ejection devices.
[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0021] 1. This utility model uses a motor to drive a rotating screw, which in turn drives symmetrically arranged deflection gears to rotate synchronously. This, in turn, causes the push rods at both ends of the rotating rod to move together, pushing the lifting plate horizontally upward. This symmetrical transmission design ensures that the jacking force is evenly distributed on the bottom surface of the extra-large rock slab, avoiding local stress concentration caused by uneven power in traditional single jacking devices. This effectively reduces rock slab cracking or deformation and improves product yield.
[0022] 2. In this invention, the rotating rod maintains axial stability through a limiting sleeve, and the ejector rod moves vertically up and down along a sliding groove within the hollow columnar structure of the support base. Multiple mechanical limiting and guiding structures constrain the movement trajectory, ensuring smooth and deviation-free operation of the lifting mechanism. Compared to the shaking or jamming problems of traditional mold ejection devices, this structure significantly improves the stability and reliability of the demolding process, ensuring continuous production. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0024] Figure 2 This is a schematic diagram of the internal structure of the lower mold of this utility model;
[0025] Figure 3 This is a schematic diagram of the connection structure of the rock slab lifting mechanism of this utility model;
[0026] Figure 4 This is a schematic diagram of the disassembly and assembly structure of the rock slab lifting mechanism of this utility model;
[0027] Figure 5 This utility model Figure 4 Schematic diagram of the middle section.
[0028] Explanation of key symbols:
[0029] 1. Upper mold; 2. Lower mold; 3. Slab lifting mechanism; 31. Mounting bracket; 32. Rotating screw; 33. Deflecting gear; 34. Rotating rod; 35. Limiting sleeve; 36. Screw sleeve; 37. Deflecting frame; 38. Buckling frame; 39. Shaft; 310. Ejector rod; 311. Support base; 312. Sliding groove; 313. Lifting plate; 4. Mold closing and pressing mechanism; 41. Support base; 42. Support column; 43. Mounting platform; 44. Hydraulic push rod. Detailed Implementation
[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0031] Example 1:
[0032] Please combine Figures 1-5 This embodiment proposes a mold assembly for producing ultra-large slabs, including an upper mold 1 and a lower mold 2. A mold closing and pressing mechanism 4 is installed on the outside of the upper mold 1 and the lower mold 2. The mold closing and pressing mechanism 4 includes a support base 41. The lower mold 2 is installed above the support base 41. A support column 42 is fixedly connected above the support base 41. A mounting plate 43 is fixedly connected to the top of the support column 42. A hydraulic push rod 44 is fixedly fixed on the mounting plate 43. The output end of the hydraulic push rod 44 is fixedly connected to the upper mold 1.
[0033] In the specific technical solution, the raw materials used to produce slabs are placed in the cavity of the lower mold 2 during use. The raw materials are piled on the surface of the lifting plate 313. Through the operation of the hydraulic push rod 44, the hydraulic push rod 44 is pressed down, which allows the upper mold plate 1 to enter the interior of the lower mold 2. Under the pressure of the hydraulic push rod 44, the upper mold plate 1 can press and shape the raw materials inside the lower mold 2.
[0034] The lower mold 2 is equipped with a rock slab lifting mechanism 3. The rock slab lifting mechanism 3 includes a mounting bracket 31. A motor is fixedly installed at the bottom of the mounting bracket 31. The output shaft of the motor is connected to a rotating screw 32. A deflection gear 33 is meshed on the outer side of the rotating screw 32. There are two sets of deflection gears 33, which are symmetrically meshed on both sides of the rotating screw 32. The rotation of the rotating screw 32 drives the deflection gears 33 on both sides to rotate synchronously.
[0035] A rotating rod 34 passes through the center of the deflection gear 33. The two ends of the rotating rod 34 are rotatably sleeved with a limiting sleeve 35. The bottom end of the limiting sleeve 35 is fixedly connected to the mounting bracket 31.
[0036] Specific technical solutions:
[0037] Motor start-up: After the motor at the bottom of the mounting bracket 31 is powered on, the output shaft drives the rotating screw 32 to rotate.
[0038] Gear meshing transmission: Two sets of deflecting gears 33 symmetrically meshing on the outer side of the rotating screw 32 rotate synchronously, utilizing the stability of gear transmission to ensure consistent power on both sides.
[0039] The rotating rod 34 is linked: the deflection gear 33 transmits torque through the rotating rod 34 that passes through the center. The rotating rod 34 is kept axially stable under the constraint of the limiting sleeve 35 to avoid displacement.
[0040] The top of both ends of the rotating rod 34 is fixedly connected to the screw sleeve 36, and the outside of the screw sleeve 36 is fixedly connected to the deflection frame 37. The deflection frame 37 is integrally formed with the buckle frame 38, and the buckle frame 38 has a U-shaped groove. The shaft 39 moves inside the U-shaped groove of the buckle frame 38.
[0041] The inner side of the buckle bracket 38 holds the shaft rod 39, and the outer side of the shaft rod 39 is fixedly connected to the top rod 310. The top rod 310 is slidably connected to the inside of the support base 311, and the side of the support base 311 is provided with a sliding groove 312. The inside of the support base 311 is hollow cylindrical, and the top rod 310 is solid cylindrical. The top rod 310 is inserted into the inside of the support base 311 to move up and down.
[0042] More specifically, in this technical solution, the screw sleeve 36 rotates synchronously with the rod body, causing the outer fixed deflection frame 37 to swing around the axis of the rotating rod 34. The latching frame 38 on the deflection frame 37 clamps the shaft 39 through a U-shaped slot. When the deflection frame 37 swings, the shaft 39 slides in the slot, converting the rotational motion into the vertical lifting motion of the top rod 310. The top rod 310 is inserted into the hollow columnar structure of the support base 311 and moves vertically along the sliding groove 312, ensuring a smooth and non-deviation-free lifting process.
[0043] A lifting plate 313 is fixedly connected to the top end of the push rod 310. The lifting plate 313 is located at the bottom of the lower mold 2 and fits against the side wall of the lower mold 2. The rock slab to be processed is placed on the surface of the lifting plate 313, and the upper mold 1 and the lower mold 2 are closed for processing.
[0044] The lifting plate is evenly stressed: The lifting plate 313 at the top of the top rod 310 contacts the bottom surface of the rock slab. Multiple sets of top rods 310 achieve horizontal lifting of the lifting plate 313 through synchronous transmission, avoiding the stress concentration problem of traditional single ejection device.
[0045] This patent achieves uniform and stable lifting and demolding of ultra-large rock slabs after mold closing through the mechanical transmission design of the rock slab lifting mechanism. Its working principle is as follows:
[0046] Pressing and molding
[0047] In use, the raw materials used to produce slabs are placed in the cavity of the lower mold 2. The raw materials are piled on the surface of the lifting plate 313. Through the operation of the hydraulic push rod 44, the hydraulic push rod 44 is pressed down, which allows the upper mold plate 1 to enter the interior of the lower mold 2. Under the pressure of the hydraulic push rod 44, the upper mold plate 1 can press and shape the raw materials inside the lower mold 2.
[0048] Power transmission and synchronous drive
[0049] Motor start-up: After the motor at the bottom of the mounting bracket 31 is powered on, the output shaft drives the rotating screw 32 to rotate.
[0050] Gear meshing transmission: Two sets of deflecting gears 33 symmetrically meshing on the outer side of the rotating screw 32 rotate synchronously, utilizing the stability of gear transmission to ensure consistent power on both sides.
[0051] Rotating rod linkage: The deflection gear 33 transmits torque through the centrally penetrating rotating rod 34. The rotating rod 34 maintains axial stability under the constraint of the limiting sleeve 35, avoiding deviation.
[0052] Motion conversion of the push rod lifting mechanism
[0053] The screw sleeves 36 at both ends of the rotating rod 34 rotate synchronously with the rod body, causing the outer fixed deflection frame 37 to swing around the axis of the rotating rod 34. The buckle frame 38 on the deflection frame 37 clamps the shaft 39 through the U-shaped slot. When the deflection frame 37 swings, the shaft 39 slides in the slot, converting the rotational motion into the vertical lifting motion of the top rod 310.
[0054] Support seat guide: The top rod 310 is inserted into the hollow columnar structure of the support seat 311 and moves vertically along the sliding groove 312 to ensure that the lifting process is smooth and without deviation.
[0055] Slab lifting and demolding
[0056] The lifting plate is evenly stressed: The lifting plate 313 at the top of the top rod 310 contacts the bottom surface of the rock slab. Multiple sets of top rods 310 achieve horizontal lifting of the lifting plate 313 through synchronous transmission, avoiding the stress concentration problem of traditional single ejection device.
[0057] Demolding stage: After pressing, the hydraulic push rod 44 drives the upper template 1 to move upward, thereby separating it from the lower mold 2. The motor drives the lifting mechanism to make the lifting plate 313 lift the rock slab at a uniform speed. The synchronicity of mechanical transmission ensures that the overall force of the ultra-large rock slab is uniform, reducing cracking or deformation caused by local stress, and achieving efficient and non-destructive demolding.
[0058] Key technological advantages
[0059] Symmetrical transmission design: By cooperating with the rotating screw 32 and the symmetrical deflection gear 33, the synchronous movement of the push rods 310 on both sides is ensured, thus solving the problem of uneven power in traditional push-out devices.
[0060] Mechanical limiting and guiding: The structural design of the limiting sleeve 35 and the support base 311 constrains the movement trajectory of the rotating rod 34 and the top rod 310, thereby improving the stability of the mechanism.
[0061] Motion mode conversion: By utilizing the sliding connection between the buckle bracket 38 and the shaft 39, the rotational motion can be flexibly converted into vertical lifting motion to meet the demolding stroke requirements of ultra-large slabs.
[0062] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.
Claims
1. A mold assembly for producing ultra-large slabs, comprising an upper mold (1) and a lower mold (2), characterized in that, The lower mold (2) is equipped with a rock slab lifting mechanism (3). The rock slab lifting mechanism (3) includes a mounting bracket (31). A motor is fixedly mounted at the bottom end of the mounting bracket (31). The output shaft of the motor is connected to a rotating screw (32). A deflection gear (33) meshes with the outer side of the rotating screw (32). A rotating rod (34) passes through the center of the deflection gear (33). The two ends of the rotating rod (34) are rotatably sleeved with a limiting sleeve (35). The bottom end of the limiting sleeve (35) is fixedly connected to the mounting bracket (31). The rotating rod (34) has screw sleeves (36) fixedly connected to the top of both ends of the rod body. A deflection frame (37) is fixedly connected to the outside of the screw sleeve (36). A buckle frame (38) is integrally formed on the deflection frame (37). A shaft rod (39) is clamped on the inside of the buckle frame (38). A top rod (310) is fixedly connected to the outside of the shaft rod (39). The top rod (310) is slidably connected to the inside of the support base (311). A sliding groove (312) is provided on the side of the support base (311).
2. The mold assembly for producing ultra-large-size slabs as described in claim 1, characterized in that, The deflection gears (33) are provided in two sets, which mesh symmetrically on both sides of the rotating screw (32). The rotation of the rotating screw (32) drives the deflection gears (33) on both sides to rotate synchronously.
3. The mold assembly for producing ultra-large-size slabs as described in claim 1, characterized in that, The buckle frame (38) has a U-shaped slot, and the shaft (39) moves inside the U-shaped slot of the buckle frame (38).
4. The mold assembly for producing ultra-large-size slabs as described in claim 1, characterized in that, The support base (311) has a hollow column inside, while the top rod (310) is a solid column. The top rod (310) is inserted into the support base (311) for lifting and lowering.
5. The mold assembly for producing ultra-large-size slabs as described in claim 1, characterized in that, The top of the top rod (310) is fixedly connected to a lifting plate (313), which is located at the bottom of the lower mold (2) and fits against the side wall of the lower mold (2).
6. The mold assembly for producing ultra-large-size slabs as described in claim 5, characterized in that, The rock slab to be processed is placed on the surface of the lifting plate (313), and the upper mold (1) and the lower mold (2) are closed for processing.
7. The mold assembly for producing ultra-large-size slabs as described in claim 1, characterized in that, A mold closing and pressing mechanism (4) is installed on the outside of the upper mold (1) and the lower mold (2). The mold closing and pressing mechanism (4) includes a support base (41). The lower mold (2) is installed above the support base (41). A support column (42) is fixedly connected above the support base (41). A mounting plate (43) is fixedly connected to the top of the support column (42). A hydraulic push rod (44) is fixed on the mounting plate (43). The output end of the hydraulic push rod (44) is fixedly connected to the upper mold (1).