Anti-seismic bridge prefabricated component processing equipment

Abstract

This invention relates to the field of bridge precast component technology, and more particularly to a processing equipment for earthquake-resistant bridge precast components, comprising an installation frame, a hopper, a long discharge cylinder, a first electric push rod, and baffles; the hopper is fixedly connected to the installation frame; the bottom of the hopper is connected to the long discharge cylinder, which is fixedly connected to the installation frame; a first electric push rod is fixedly connected to each side of the long discharge cylinder; baffles are fixedly connected to the telescopic parts of the first electric push rods; the two baffles block the long discharge opening at the bottom of the long discharge cylinder, and the first electric push rods push the baffles to move, adjusting the opening width and position of the long discharge opening. This invention addresses the shortcomings of traditional bridge precast component casting hoppers, such as limited coverage, uncontrollable coupling between flow rate and coverage, easy splashing during casting, and poor adaptability, by making structural innovations, significantly improving the concrete casting quality and construction efficiency of bridge precast components.

Description

Technical Field

[0001] This invention relates to the field of bridge prefabricated component technology, and in particular to a processing equipment for earthquake-resistant bridge prefabricated components. Background Technology

[0002] In the production of precast components for earthquake-resistant bridges, the concrete pouring process is a crucial step that determines the overall quality and mechanical properties of the components. However, traditional hoppers have significant drawbacks in practical applications due to the large length and width of precast bridge components (such as T-beams and box girders).

[0003] First, the material feeding coverage is insufficient, making it difficult to meet the needs of large-sized components. The existing hopper's feeding port span is usually short, unable to cover the full width of the precast component from front to back or left to right in one go. During the casting process, in order to fill the entire mold, the hopper must be frequently driven to move back and forth longitudinally or laterally. This multi-point, intermittent moving casting method prolongs the operation time and reduces production efficiency.

[0004] Secondly, the flow regulation mechanism is unreasonable, compromising pouring stability. Existing technologies, such as patents CN122106279A (an automatic controlled material pouring hopper for high-altitude concrete and its pouring method) and CN120228811A (an automatic opening concrete hopper), control the flow rate by adjusting the opening of the discharge port. However, this approach has significant limitations: when the discharge port is narrowed to slow the concrete flow, the coverage area decreases, forcing the hopper to move more frequently; conversely, while widening the discharge port increases the coverage area, it may lead to an excessively fast and uncontrollable concrete flow rate. This tightly coupled design logic of flow rate regulation and coverage area makes it impossible for operators to control both independently, resulting in operational difficulties. Summary of the Invention

[0005] To overcome the shortcomings mentioned in the background art, this invention provides: a prefabricated component processing equipment for earthquake-resistant bridges, comprising an installation frame, a hopper, a long discharge cylinder, a first electric push rod, and a baffle; the hopper is fixedly connected to the installation frame; the bottom of the hopper is connected to the long discharge cylinder, which is fixedly connected to the installation frame; a first electric push rod is fixedly connected to each side of the long discharge cylinder; a baffle is fixedly connected to the telescopic part of the first electric push rod; the long discharge port at the bottom of the long discharge cylinder is blocked by the two baffles, and the opening width and position of the long discharge port are adjusted by pushing the baffles with the first electric push rods.

[0006] Furthermore, it also includes a movable column; each of the two baffles is connected to a movable column on the opposite side, and the movable column is located inside the long discharge cylinder; when the baffle moves, the movable column moves accordingly, so that the width of the receiving space of the long discharge cylinder is consistent with the opening width of the long discharge port.

[0007] Furthermore, it also includes a distributor and a motor; the distributor is rotatably connected in the long feed cylinder; a motor is installed on one side of the long feed cylinder, and the output shaft of the motor is fixedly connected to the distributor, driving the distributor to rotate in the long feed cylinder through the motor; the distributor consists of a central rotating rod and multiple partitions fixed to the rotating rod, dividing the receiving space of the long feed cylinder into multiple receiving sub-spaces through the distributor; the distributor is slidably connected to the moving column; when the distributor rotates, the moving column follows the distributor to rotate, and at the same time the moving column slides relative to the baffle.

[0008] Furthermore, the two first electric push rods are controlled to drive the two baffles to move towards each other or away from each other, thereby adjusting the opening width of the long discharge port.

[0009] Furthermore, the two first electric push rods are controlled to drive the two baffles to move in the same direction, thereby adjusting the opening position of the long discharge port.

[0010] Furthermore, the movable column is hollow.

[0011] Furthermore, it also includes a transverse shielding component and a longitudinal shielding component; a transverse shielding component is connected to the lower front side and the lower rear side of the long discharge cylinder; a longitudinal shielding component is connected to the lower right side of the left baffle, and another longitudinal shielding component is connected to the lower left side of the right baffle; the transverse shielding component and the longitudinal shielding component shield the perimeter of the opening of the long discharge port, guiding the concrete to be discharged vertically downward.

[0012] Furthermore, the transverse blocking component includes a first fixed plate and a first rotating plate; the first fixed plate is fixedly connected to the long feed cylinder; the first rotating plate is rotatably connected to the lower side of the first fixed plate.

[0013] Furthermore, the longitudinal blocking component includes a second fixed plate and a second rotating plate; the second fixed plate is fixedly connected to the baffle; the second rotating plate is rotatably connected to the lower side of the second fixed plate.

[0014] Furthermore, it also includes a second electric push rod; each of the two second rotating plates is hinged to a second electric push rod on its opposite side, and the fixed end of the second electric push rod is hinged to the baffle; by controlling the extension and retraction of the extension and retraction of the second electric push rod, the second rotating plate is actively rotated; it also includes a transmission assembly, which is fixedly connected to the long feed cylinder; the transmission assembly has an even number of meshing gears, and each gear on both sides is provided with an external rotating shaft, which is fixedly connected to the rotating shaft of the first rotating plate; when one of the first rotating plates is squeezed and rotated by the inner mold pressure beam, the other first rotating plate rotates synchronously through the transmission assembly.

[0015] The beneficial effects of this invention are as follows: This invention addresses the shortcomings of traditional bridge precast component casting hoppers, such as limited coverage, uncontrollable coupling between flow rate and coverage, easy splashing during casting, and poor adaptability. It makes structural innovations and greatly improves the concrete casting quality and construction efficiency of bridge precast components.

[0016] Specifically, this invention features a long discharge cylinder structure, adaptable to the full-width casting requirements of large-size precast components such as T-beams and box girders. It eliminates the intermittent casting mode of traditional hopper reciprocating movement, effectively shortening operation time and improving production efficiency. The invention uses a first electric push rod to move the baffle and moving column, precisely adjusting the opening width and position of the long discharge port to adapt to casting conditions of different component specifications. Simultaneously, the receiving space of the long discharge cylinder matches the width of the long discharge port, avoiding dead zones in the discharge process. This invention uses a motor-driven distributor to rotate and distribute material, dividing a single discharge space into multiple receiving spaces. The discharge flow rate is independently controlled by adjusting the distributor's rotation speed, solving the problem of strong coupling between flow rate and coverage area in traditional equipment, which cannot be individually controlled. Furthermore, this invention adds adaptively adjustable lateral and longitudinal shielding components that change adaptively with the width of the discharge port, effectively suppressing concrete splashing. Combined with a second electric push rod, the transmission assembly can automatically avoid the inner mold pressure beam, preventing concrete waste accumulation and adapting to construction site conditions using inner mold pressure beams. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a cross-sectional view of the long feed cylinder of the present invention;

[0019] Figure 3 for Figure 1 A schematic diagram of a partial structure;

[0020] Figure 4 This is a cross-sectional view of the first fixed plate and the first rotating plate of the present invention;

[0021] Figure 5 for Figure 4 The state diagram shows that the first rotating plate and the second rotating plate rotate to a horizontal position.

[0022] Figure 6 This is a schematic diagram of the transmission component of the present invention;

[0023] Figure 7 This is a schematic diagram of the structure when the first rotating plate of the present invention comes into contact with the inner mold pressure beam.

[0024] The markings in the attached diagram are: 1-mounting frame, 2-hopper, 3-long discharge cylinder, 4-first electric push rod, 5-baffle, 6-moving column, 7-distributor, 8-motor, 11-lateral blocking component, 12-longitudinal blocking component, 101-first fixed plate, 102-first rotating plate, 103-second fixed plate, 104-second rotating plate, 105-second electric push rod, 106-transmission assembly. Detailed Implementation

[0025] References to embodiments herein mean that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0026] In the production of precast components for earthquake-resistant bridges, the concrete pouring process is a crucial step that determines the overall quality and mechanical properties of the components. However, traditional hoppers have significant drawbacks in practical applications due to the large length and width of precast bridge components (such as T-beams and box girders).

[0027] First, the material feeding coverage is insufficient, making it difficult to meet the needs of large-sized components. The existing hopper's feeding port span is usually short, unable to cover the full width of the precast component from front to back or left to right in one go. During the casting process, in order to fill the entire mold, the hopper must be frequently driven to move back and forth longitudinally or laterally. This multi-point, intermittent moving casting method prolongs the operation time and reduces production efficiency.

[0028] Secondly, the flow regulation mechanism is unreasonable, compromising pouring stability. Existing technologies, such as patents CN122106279A (an automatic controlled material pouring hopper for high-altitude concrete and its pouring method) and CN120228811A (an automatic opening concrete hopper), control the flow rate by adjusting the opening of the discharge port. However, this approach has significant limitations: when the discharge port is narrowed to slow the concrete flow, the coverage area decreases, forcing the hopper to move more frequently; conversely, while widening the discharge port increases the coverage area, it may lead to an excessively fast and uncontrollable concrete flow rate. This tightly coupled design logic of flow rate regulation and coverage area makes it impossible for operators to control both independently, resulting in operational difficulties.

[0029] In response to this, the present invention is proposed.

[0030] Example 1: As Figures 1-7As shown, the present invention provides: a processing equipment for precast components of earthquake-resistant bridges, including a mounting frame 1, a hopper 2, a long discharge cylinder 3, a first electric push rod 4, and a baffle 5; the hopper 2 is fixedly connected to the mounting frame 1; the bottom of the hopper 2 is connected to the long discharge cylinder 3, and the long discharge cylinder 3 is fixedly connected to the mounting frame 1. By setting the long discharge cylinder 3, when pouring concrete for precast bridge components, a larger width can be covered, which can reduce the operation time and improve the production efficiency.

[0031] A first electric push rod 4 is fixedly connected to each side of the long feeding cylinder 3; a baffle 5 is fixedly connected to the telescopic part of the first electric push rod 4; the long feeding port at the bottom of the long feeding cylinder 3 is blocked by the two baffles 5, and the opening width and opening position of the long feeding port are adjusted by pushing the baffles 5 with the first electric push rod 4.

[0032] Furthermore, it also includes a movable column 6; each of the two baffles 5 is connected to a movable column 6 on the opposite side, and the movable column 6 is located inside the long feed cylinder 3; when the baffles 5 move, the movable column 6 moves accordingly, so that the width of the receiving space of the long feed cylinder 3 is consistent with the opening width of the long feed port.

[0033] Furthermore, it also includes a distributor 7 and a motor 8; the distributor 7 is rotatably connected in the long feed cylinder 3; the motor 8 is installed on one side of the long feed cylinder 3, and the output shaft of the motor 8 is fixedly connected to the distributor 7, so that the distributor 7 can rotate in the long feed cylinder 3 through the motor 8; the distributor 7 consists of a central rotating rod and multiple partitions fixed on the rotating rod, and the distributor 7 divides the receiving space of the long feed cylinder 3 into multiple receiving sub-spaces; the distributor 7 is slidably connected to the moving column 6; when the distributor 7 rotates, the moving column 6 rotates with the distributor 7, and at the same time the moving column 6 slides relative to the baffle 5.

[0034] Furthermore, the two first electric push rods 4 are controlled to drive the two baffles 5 to move towards each other or away from each other, thereby adjusting the opening width of the long discharge port.

[0035] Based on the above problems and structure, the working principle of this invention is as follows:

[0036] First, concrete is poured into hopper 2, and the mounting frame 1 is moved by hoisting with a crane or moved by installing it on a moving guide rail structure.

[0037] It is worth noting that the length of the long discharge cylinder 3 is sufficient to cover the width of the bridge precast component. Before pouring, the width of the bridge precast component to be poured is obtained. Then, based on the width, the telescopic parts of the two first electric push rods 4 are controlled to push the two baffles 5 to move apart, opening the long discharge port at the bottom of the long discharge cylinder 3, and making the opening width of the long discharge port match the width of the bridge precast component. At the same time, the moving column 6 moves accordingly, so that the width of the receiving space of the long discharge cylinder 3 is consistent with the opening width of the long discharge port.

[0038] It should be noted that when the two baffles 5 and the moving column 6 move apart, the long discharge port opens, and the two moving columns 6 do not block the discharge port of the hopper 2. At this time, the motor 8 does not drive the distributor 7 to rotate. Thus, the concrete in the hopper 2 will only flow into the receiving space located on the upper side. Even if the long discharge port has been opened, no concrete will flow downwards. In contrast, in the existing technology, when the discharge port is opened, the concrete flows out directly through the discharge port. At the same time, the existing technology cannot adjust the size of the discharge port according to the width of the bridge precast components.

[0039] During pouring, the concrete in hopper 2 first fills the upper receiving space downwards. Then, motor 8 drives the distributor 7 to rotate, causing multiple baffles to rotate, so that the receiving space passes through the outlet of hopper 2 and is filled with concrete. Simultaneously, as the distributor 7 rotates, the receiving space carries the concrete sequentially to the long discharge port, where the concrete flows out for pouring. Furthermore, it should be noted that in this invention, during concrete discharge, multiple receiving spaces pre-collect the concrete from hopper 2, and then the receiving spaces rotate, causing the concrete to flow and distribute evenly within the receiving spaces. This design ensures that when concrete flows out through the long discharge port in the receiving space, it covers the width of the long discharge port, which in turn covers the width of the precast bridge components. Therefore, by controlling the slow movement of this invention, uniform pouring of the precast bridge components can be achieved. Furthermore, when the concrete discharge speed needs to be adjusted, this can be done by changing the rotational speed of the motor 8 driving the distributor 7. Compared to existing technologies that require adjusting the opening size to adjust the concrete discharge speed, this invention does not require changing the opening width of the long discharge port, thus not affecting the coverage area during concrete pouring.

[0040] Furthermore, in order to increase the flow speed of concrete in the receiving space and make the concrete evenly distributed, the motor 8 can be controlled to drive the distributor 7 to rotate back and forth several times in a small range when receiving material in the receiving space, and the concrete is impacted by the partition to accelerate the flow of concrete.

[0041] Furthermore, by controlling the two first electric push rods 4 to drive the two baffles 5 to move in the same direction, the opening position of the long discharge port is adjusted so that the present invention can be adapted to more application scenarios.

[0042] Furthermore, the movable column 6 is hollow, which reduces material usage and lightens the weight of the equipment.

[0043] Example 2: Based on Example 1, as follows Figures 1-7As shown, the present invention also includes a transverse shielding member 11 and a longitudinal shielding member 12; a transverse shielding member 11 is connected to the lower front side and the lower rear side of the long discharge cylinder 3; a longitudinal shielding member 12 is connected to the lower right side of the left baffle 5, and another longitudinal shielding member 12 is connected to the lower left side of the right baffle 5; the transverse shielding member 11 and the longitudinal shielding member 12 shield the perimeter of the opening of the long discharge port, guide the concrete to be discharged vertically downward, and reduce the problem of concrete splashing during discharge.

[0044] Furthermore, the transverse blocking member 11 includes a first fixed plate 101 and a first rotating plate 102; the first fixed plate 101 is fixedly connected to the long feed cylinder 3; the first rotating plate 102 is rotatably connected to the lower side of the first fixed plate 101.

[0045] Furthermore, the longitudinal blocking member 12 includes a second fixed plate 103 and a second rotating plate 104; the second fixed plate 103 is fixedly connected to the baffle 5; the second rotating plate 104 is rotatably connected to the lower side of the second fixed plate 103.

[0046] Furthermore, it also includes a second electric push rod 105; each of the two second rotating plates 104 is hinged to a second electric push rod 105 on the opposite side, and the fixed end of the second electric push rod 105 is hinged to the baffle 5; by controlling the extension and retraction of the extension and retraction part of the second electric push rod 105, the second rotating plate 104 is actively rotated.

[0047] It also includes a transmission assembly 106, which is fixedly connected to the long feed cylinder 3; the transmission assembly 106 has an even number of meshing gears, and each gear on both sides is provided with an external rotating shaft, which is fixedly connected to the rotating shaft of the first rotating plate 102; when one of the first rotating plates 102 is squeezed and rotated by the inner mold pressure beam, the other first rotating plate 102 rotates synchronously and symmetrically through the transmission assembly 106.

[0048] To reduce the splashing problem during concrete pouring, this invention provides a transverse shielding member 11 and a longitudinal shielding member 12 to shield the opening of the long pouring port. The longitudinal shielding member 12 can move with the baffle 5, so that the shielding space formed by the transverse shielding member 11 and the longitudinal shielding member 12 can adapt to the change of the opening width of the long pouring port.

[0049] Furthermore, when precast bridge components are poured, an inner mold pressure beam is used. In the case of the inner mold pressure beam, a large amount of concrete will fall onto the inner mold pressure beam and cannot be used. When the present invention is working, since the inner mold pressure beam protrudes upward and is higher than the pouring mold of the precast bridge component, the present invention can lower the height of the mounting frame 1 in advance when facing the case of the inner mold pressure beam, so that the upper edge of the first rotating plate 102 is slightly higher than the upper edge of the inner mold pressure beam.

[0050] Subsequently, during pouring, when the long discharge cylinder 3 is about to move to the position of the inner mold pressure beam, the telescopic part of the second electric push rod 105 is retracted, causing the second rotating plate 104 to rotate to a horizontal state. Then, when one of the first rotating plates 102 contacts the inner mold pressure beam, the first rotating plate 102 rotates under the reaction force of the inner mold pressure beam, and through the transmission component 106, the other first rotating plate 102 also rotates. The two first rotating plates 102 rotate symmetrically, and under the reaction action of the inner mold pressure beam, the two first rotating plates 102 can rotate to a horizontal state, closing the opening of the long discharge port. In this way, when the present invention passes the inner mold pressure beam, the concrete will not fall onto the inner mold pressure beam, and the present invention enters the inner mold pressure beam avoidance mode. Subsequently, when the first rotating plate 102 passes the inner mold pressure beam, it is no longer restricted by the inner mold pressure beam, and under its own weight, it rotates back to a vertical state, and the present invention enters the concrete pouring mode again.

[0051] In summary, this invention addresses the shortcomings of traditional bridge precast component casting hoppers, such as limited coverage, uncontrollable coupling between flow rate and coverage, easy splashing during casting, and poor adaptability. Through structural innovation, it significantly improves the concrete casting quality and construction efficiency of bridge precast components.

[0052] Specifically, this invention features a long discharge cylinder 3 structure, which can adapt to the full-width casting requirements of large-size precast components such as T-beams and box girders, eliminating the intermittent casting mode of traditional hopper reciprocating movement, effectively shortening operation time and improving production efficiency; this invention uses a first electric push rod 4 to push the baffle 5 and the moving column 6 to move, which can precisely adjust the opening width and position of the long discharge port to adapt to the casting conditions of components of different specifications. At the same time, the receiving space of the long discharge cylinder 3 is also matched with the width of the long discharge port to avoid the occurrence of dead corners in the discharge; this invention uses a motor 8 to drive the distributor 7 to rotate. The material distribution system divides a single discharge space into multiple receiving spaces. By adjusting the rotation speed of the distributor 7, the discharge flow rate can be independently controlled, solving the problem of strong coupling between flow rate and coverage area in traditional equipment, which cannot be individually controlled. In addition, the invention adds an adaptively adjustable lateral shielding component 11 and a longitudinal shielding component 12, which can adaptively change with the width of the discharge port to effectively suppress concrete splashing. With the second electric push rod 105, the transmission component 106 can realize automatic avoidance of the inner mold pressure beam, avoiding the accumulation of concrete waste, and adapting to the construction site conditions using the inner mold pressure beam.

[0053] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A processing equipment for prefabricated components of earthquake-resistant bridges, characterized in that, It includes a mounting frame (1); a hopper (2) is fixedly connected to the mounting frame (1); a long discharge cylinder (3) is connected to the bottom of the hopper (2), and the long discharge cylinder (3) is fixedly connected to the mounting frame (1); a first electric push rod (4) is fixedly connected to each side of the long discharge cylinder (3); a baffle (5) is fixedly connected to the telescopic part of the first electric push rod (4); the long discharge port at the bottom of the long discharge cylinder (3) is blocked by the two baffles (5), and the baffles (5) are moved by the first electric push rod (4) to adjust the opening width and opening position of the long discharge port.

2. The prefabricated component processing equipment for earthquake-resistant bridges according to claim 1, characterized in that, It also includes a movable column (6); each of the two baffles (5) is connected to a movable column (6) on the opposite side, and the movable column (6) is located inside the long discharge cylinder (3); when the baffle (5) moves, the movable column (6) moves accordingly, so that the width of the receiving space of the long discharge cylinder (3) is consistent with the opening width of the long discharge port.

3. The seismic-resistant bridge prefabricated component processing equipment according to claim 2, characterized in that, It also includes a distributor (7) and a motor (8); the distributor (7) is rotatably connected in the long feed cylinder (3); the motor (8) is installed on one side of the long feed cylinder (3), and the output shaft of the motor (8) is fixedly connected to the distributor (7). The distributor (7) is driven to rotate in the long feed cylinder (3) by the motor (8); the distributor (7) consists of a central rotating rod and multiple partitions fixed on the rotating rod. The distributor (7) divides the receiving space of the long feed cylinder (3) into multiple receiving sub-spaces; the distributor (7) is slidably connected to the moving column (6); when the distributor (7) rotates, the moving column (6) rotates with the distributor (7), and at the same time, the moving column (6) slides relative to the baffle (5).

4. The prefabricated component processing equipment for earthquake-resistant bridges according to claim 3, characterized in that, Control the two first electric push rods (4) to drive the two baffles (5) to move towards each other or away from each other, and adjust the opening width of the long discharge port.

5. The prefabricated component processing equipment for earthquake-resistant bridges according to claim 4, characterized in that, Control the two first electric push rods (4) to drive the two baffles (5) to move in the same direction, and adjust the opening position of the long discharge port.

6. The prefabricated component processing equipment for earthquake-resistant bridges according to claim 1, characterized in that, The movable column (6) is hollow.

7. The prefabricated component processing equipment for earthquake-resistant bridges according to claim 3, characterized in that, It also includes a transverse shield (11) and a longitudinal shield (12); a transverse shield (11) is connected to the lower front side and the lower rear side of the long discharge cylinder (3); a longitudinal shield (12) is connected to the lower right side of the left baffle (5), and another longitudinal shield (12) is connected to the lower left side of the right baffle (5); the transverse shield (11) and the longitudinal shield (12) shield the perimeter of the opening of the long discharge port, guiding the concrete to be discharged vertically downward.

8. The prefabricated component processing equipment for earthquake-resistant bridges according to claim 7, characterized in that, The transverse blocking component (11) includes a first fixed plate (101) and a first rotating plate (102); the first fixed plate (101) is fixedly connected to the long feed cylinder (3); the first rotating plate (102) is rotatably connected to the lower side of the first fixed plate (101).

9. The seismic-resistant bridge prefabricated component processing equipment according to claim 8, characterized in that, The longitudinal blocking member (12) includes a second fixed plate (103) and a second rotating plate (104); the second fixed plate (103) is fixedly connected to the baffle (5); the second rotating plate (104) is rotatably connected to the lower side of the second fixed plate (103).

10. The prefabricated component processing equipment for earthquake-resistant bridges according to claim 9, characterized in that, It also includes a second electric push rod (105); each of the two second rotating plates (104) is hinged to a second electric push rod (105) on the opposite side, and the fixed end of the second electric push rod (105) is hinged to the baffle (5); by controlling the extension and retraction of the extension and retraction of the second electric push rod (105), the second rotating plate (104) is actively rotated; it also includes a transmission assembly (106), which is fixedly connected to the long feed cylinder (3); the transmission assembly (106) has an even number of meshing gears, and each gear on both sides is provided with an external rotating shaft, which is fixedly connected to the rotating shaft of the first rotating plate (102); when one of the first rotating plates (102) is squeezed and rotated by the inner mold pressure beam, the other first rotating plate (102) rotates synchronously through the transmission assembly (106).

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