A mold opening and closing device and a mold opening and closing method

Abstract

This invention relates to the field of mold opening and closing technology, and particularly to a mold opening and closing device and method, including a mold station frame, a bottom mold, a frame, a top mold, a fixed frame, a limiting mechanism, a flipping mechanism, a clamping mechanism, and a lifting mechanism. A baffle protruding outwards is provided on one side of the top mold. The flipping mechanism connects the clamping mechanism and the lifting mechanism. The lifting mechanism is connected to the clamping mechanism and is used to drive the clamping mechanism to lift the frame up and down. When the clamping mechanism is in a high position, it can be flipped around the flipping mechanism along one side. The fixed frame is located above the mold station frame. The limiting mechanism includes a first driving member and a limiting plate. The first driving member is located on the fixed frame and connected to the limiting plate, and is used to drive the limiting plate to move up and down towards the mold station frame. The limiting plate restricts the top mold in an upward flipping state. When the limiting plate restricts the top mold, the lifting mechanism in a descending state can separate the frame from the top mold, achieving the function of automatically opening the frame.

Description

Technical Field

[0001] This invention relates to the field of mold opening and closing technology, and in particular to a mold opening and closing device and a mold opening and closing method. Background Technology

[0002] In the prior art, the molding mold for the shoe sole includes a lower mold plate and a top mold plate. The lower mold plate and the top mold plate are each provided with a cavity. The shape of the cavity formed by the merging of the lower mold plate and the top mold plate is the shape of the shoe sole. The top mold plate is filled with compression molding material. After the lower mold plate and the top mold plate are closed and locked for a period of time, the shoe sole is formed after the molding material is shaped through compression molding. Demolding complex shoe soles is very difficult, and it is easy to damage the product or the mold during demolding, resulting in a short mold lifespan. Therefore, the authorized publication number CN203697352U discloses a three-opening shoe sole compression mold with a middle frame, including a lower template, a middle frame, and a top template. The lower template and the top template are each provided with a cavity. The first end of the middle frame and the top template are hinged, and the second end is provided with a mold locking device. The first end of the middle frame and the lower template are connected, and the second end is provided with a mold locking device. A connecting block is fixed on both sides of the first end of the middle frame, and the two connecting blocks are each provided with a vertical groove. The first end of the lower template is fixed with a hinge shaft, and the two ends of the hinge shaft are respectively movably inserted into the grooves of the connecting blocks on both sides. This mold adds a middle frame, and the two sides of the middle frame can be opened. When opening the mold, the lower template, the middle frame, and the top template can all be separated individually, making it more convenient to remove the shoe sole without damaging the product or the mold, and extending the mold lifespan. However, the opening of the top template and middle frame or the lower template and side frame of this type of mold requires manual operation, which is time-consuming, labor-intensive, and requires high manual labor intensity. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides a mold opening and closing device and a mold opening and closing method.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a mold opening and closing device, including a mold station frame and a mold disposed on the mold station frame, the mold including a bottom mold, a frame and a top mold, the frame being movably disposed on the bottom mold, one side of the top mold being foldably disposed on the frame, and one side of the top mold being provided with an outwardly protruding baffle, and also including a fixed frame, a limiting mechanism, a mold flipping mechanism, a clamping mechanism and a lifting mechanism;

[0005] The flipping mechanism connects the clamping mechanism and the lifting mechanism. The lifting mechanism is connected to the clamping mechanism and is used to drive the clamping mechanism to lift the frame up and down. When the clamping mechanism is in a high position, it can be flipped around the flipping mechanism along one side.

[0006] The fixed frame is installed above the mold station frame. The limiting mechanism includes a first driving component and a limiting plate. The first driving component is installed on the fixed frame and connected to the limiting plate, and is used to drive the limiting plate to move vertically up and down in the direction of the mold station frame. The limiting plate is used to restrict the top mold in the upward flipping state. When the limiting plate restricts the top mold, the lifting mechanism in the lowering state can drive the frame to separate from the top mold.

[0007] Furthermore, the lower end of the limiting plate is provided with an upwardly recessed U-shaped groove, and the baffle can be embedded in the U-shaped groove.

[0008] Furthermore, it also includes a swing mechanism, which includes two rotating plates, a rotating shaft, a mounting plate, and a first pushing member. The two rotating plates pass downward through the fixed frame and are rotatably arranged. The two rotating plates are arranged at corresponding intervals. The two ends of the mounting plate are respectively connected to each rotating plate. The first driving member is arranged on the mounting plate. The first pushing member is arranged on the upper end of the fixed frame and is rotatably connected to the upper end of each rotating plate. The rotating shaft is fixedly arranged on the fixed frame. The middle position of the rotating plate can rotate around the rotating shaft, so that the first pushing member can push the two rotating plates around the rotating shaft to drive the first driving member to swing.

[0009] Furthermore, it also includes a blocking mechanism. A limiting stop is provided on one side edge of the fixed frame. The blocking mechanism includes a second pushing member and a movable block. A limiting stop is provided on one side edge of the fixed frame. There is a gap between the limiting stop and one side of the rotating plate. The second pushing member is located at the upper end of the fixed frame and is connected to the movable block. The position of the movable block corresponds to the gap. The second pushing member can push the movable block to be embedded in the gap, so that the rotating plate is restricted from rotating.

[0010] Furthermore, the fixed frame is provided with two mounting blocks, which are respectively located on the outside of the rotating plate, and the rotating shaft is fixedly inserted through the mounting blocks and the rotating plate.

[0011] Furthermore, the mounting plate is provided with two guide rods, which pass through the fixed frame and are connected to the limiting plate. The two guide rods are respectively located on both sides of the first driving member, so that the first driving member can drive the limiting plate to move up and down along the guide rods.

[0012] Furthermore, the lifting mechanism includes a second driving component and a lifting frame. The second driving component is mounted on the model station frame and is connected to the lifting frame to drive the lifting frame to move up and down.

[0013] Furthermore, the flipping mechanism includes a vertical limiting plate and a connecting plate. The vertical limiting plate is set on the mold station frame. The clamping mechanism is movably set on the vertical limiting plate and can be flipped along the upper end of the vertical limiting plate. One end of the connecting plate is rotatably connected to the lifting frame, and the other end is rotatably connected to the clamping mechanism.

[0014] Furthermore, the clamping mechanism includes a rotating plate, a clamping plate, a clamping cylinder, and a limiting block. The side of the frame is provided with an outwardly extending rod. The clamping plate is provided with a limiting groove. The rotating plate is movably mounted on the vertical limiting plate. The clamping plate is located on one side of the rotating plate. The limiting block is located at one end of the clamping cylinder. The lifting frame lifts the rotating plate up to the limiting groove and covers the extending rod. The clamping cylinder controls the limiting block to extend above the extending rod, so that the extending rod is clamped between the clamping plate and the limiting block.

[0015] A method for opening and closing a mold, comprising:

[0016] When the mold is in the mold station frame state, the frame is on the bottom mold and the top mold cover is on the frame;

[0017] Step 1: Start the lifting mechanism. The lifting mechanism drives the clamping mechanism to move upward along the flipping mechanism. During the upward movement of the clamping mechanism, the clamping frame and the top mold move upward with the lifting mechanism, so that the frame moves upward and separates from the bottom mold.

[0018] Step 2: Due to the limitations of the flipping mechanism, the clamping mechanism can only rise to a limited height. If the lifting mechanism continues to drive upward while the clamping mechanism is in a high position, the clamping mechanism can drive the frame and the top mold to flip upward around the flipping mechanism along one side.

[0019] Step 3: Once the frame and top mold are flipped to the position below the limiting mechanism, the limiting mechanism is activated. The first driving component drives the limiting plate downwards until the baffle is embedded in the limiting plate, so that the top mold is in a limited position and the frame is outside the limiting plate.

[0020] Step 4: Drive the lifting mechanism to descend a certain distance. During the descent of the lifting mechanism, the clamping mechanism clamps the frame and the top mold and flips it downward around the flipping mechanism. Since the top mold is in a limited state, the frame flips downward independently, so that the frame and the top mold are separated and the top mold and the frame are set at an angle and stay above the mold station frame.

[0021] Step 5: During the mold closing process, the first pusher pushes the rotating plate to rotate, which in turn drives the limiting plate to push the top mold to flip towards the frame. At the same time, the first drive drives the limiting plate to move upward, releasing the restriction on the baffle, so that the top mold and the frame are merged. Then, the lifting mechanism drives the top mold and the frame to descend until the frame and the bottom mold are closed.

[0022] As can be seen from the above description of the present invention, compared with the prior art, the mold opening and closing device provided by the present invention has the following advantages:

[0023] By adding a middle frame between the bottom mold and the top mold to form a three-layer mold, this type of mold can adapt to the injection molding of complex shapes and facilitates mold removal after injection molding.

[0024] The purpose of setting up the lifting mechanism is to drive the clamping mechanism to move up and down, and the function of the clamping mechanism is to clamp the frame. Thus, through the cooperation of the lifting mechanism and the clamping mechanism, the function of driving the frame and the top mold to move up and down is achieved.

[0025] The purpose of setting up the flipping mechanism is to achieve the function of flipping the mold by cooperating with the lifting mechanism to drive the frame and the top mold to flip up and down.

[0026] The purpose of setting the limiting mechanism is to limit the top mold when the frame and the top mold flip upward, so that the top mold and the frame are separated by the flipping mechanism during the descent of the lifting mechanism, thereby realizing the complete opening and closing of the mold, replacing the existing method of manually opening the top mold and the frame separately, effectively reducing the intensity of manual labor and improving production efficiency.

[0027] The purpose of setting up the swing mechanism is to push the top mold towards the frame and flip it downwards until it closes with the frame when the frame and the top mold are in the open state, so as to realize the function of automatic mold closing.

[0028] When the limiting plate limits the top mold, the limiting mechanism can be limited by the blocking mechanism to prevent the first driving component from swinging, thus avoiding the first driving component from causing the limiting plate to swing and preventing the frame from separating from the top mold. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the mold opening and closing device of the present invention in the mold closing state.

[0030] Figure 2 This is a schematic diagram of the mold opening and closing device of the present invention in the mold opening state.

[0031] Figure 3 This is a schematic diagram of the mold opening and closing device of the present invention in the state of the open frame.

[0032] Figure 4 This is a side view of the fixed frame structure of the present invention.

[0033] Figure 5 This is a top view of the fixed frame structure of the present invention.

[0034] The markings in the diagram correspond to the following: 1. Mold station frame; 2. Fixed frame; 21. Limiting guard; 3. Mold; 31. Bottom mold; 32. Frame; 321. Extension rod; 33. Top mold; 331. Baffle; 4. Limiting mechanism; 41. First driving component; 42. Limiting clamping plate; 421. U-shaped groove; 5. Lifting mechanism; 51. Second driving component; 52. Lifting frame; 6. Mold flipping mechanism; 61. Vertical limiting plate; 611. Long hole; 62. Connecting plate; 7. Clamping mechanism; 71. Rotating plate; 72. Clamping plate; 721. Limiting groove; 73. Clamping cylinder; 74. Limiting block; 8. Swinging mechanism; 81. Rotating plate; 82. Rotating shaft; 821. Mounting block; 83. Mounting plate; 831. Guide rod; 84. First pushing component; 9. Blocking mechanism; 91. Second pushing component; 92. Movable block. Detailed Implementation

[0035] The present invention will be further described below through specific embodiments.

[0036] Reference Figures 1 to 5 The mold opening and closing device shown includes a mold station frame 1, a fixed frame 2, a mold 3, a limiting mechanism 4, a mold flipping mechanism 6, a clamping mechanism 7, and a lifting mechanism 5.

[0037] The fixed frame 2 is located above the mold station frame 1. The mold 3 is placed on the mold station frame 1. The mold 3 includes a bottom mold 31, a frame 32, and a top mold 33. The frame 32 is movable up and down on the bottom mold 31. The top mold 33 is foldable on one side on the frame 32. The top mold 33 has an outwardly protruding baffle 331 on one side.

[0038] The flipping mechanism 6 connects the clamping mechanism 7 and the lifting mechanism 5. The lifting mechanism 5 is connected to the clamping mechanism 7 and is used to drive the clamping mechanism 7 to lift the frame 32 up and down. The flipping mechanism 6 can drive the frame 32 and the top mold 33 to flip upward to below the limiting mechanism 4 when the lifting mechanism 5 is in a high position.

[0039] The fixed frame 2 is located above the mold station frame 1. The limiting mechanism 4 includes a first driving member 41 and a limiting plate 42. The first driving member 41 is located on the fixed frame 2 and connected to the limiting plate 42. It is used to drive the limiting plate 42 to move vertically up and down in the direction of the mold station frame 1. The limiting plate 42 can move downward and make the baffle 331 embedded in the limiting plate 42. The limiting plate 42 is used to restrict the top mold 33 in the upward flipping state. When the limiting plate 42 restricts the top mold 33, the lifting mechanism 5 can drive the frame 32 to separate from the top mold 33 in the descending state.

[0040] The lower end of the limiting plate 42 is provided with an upwardly recessed U-shaped groove 421. The baffle 331 can be embedded in the U-shaped groove 421. When the limiting plate 42 is vertically downward and stationary, the top mold 33 can only be restricted within the width range of the U-shaped groove 421.

[0041] The swing mechanism 8 includes two rotating plates 81, a rotating shaft 82, a mounting plate 83, and a first pushing member 84. The two rotating plates 81 pass downward through the fixed frame 2 and are rotatably arranged. The two rotating plates 81 are arranged at intervals. The two ends of the mounting plate 83 are respectively connected to each of the rotating plates 81. The first driving member 41 is arranged on the mounting plate 83. The first pushing member 84 is arranged on the upper end of the fixed frame 2 and is rotatably connected to the upper end of each of the rotating plates 81. The rotating shaft 82 is fixedly arranged on the fixed frame 2. The middle position of the rotating plate 81 can rotate around the rotating shaft 82, so that the first pushing member 84 can push the two rotating plates 81 around the rotating shaft 82 to drive the first driving member 41 to swing. The fixed frame 2 is provided with two mounting blocks 821, which are respectively arranged on the outside of the rotating plates 81. The rotating shaft 82 is fixedly arranged through the mounting blocks 821 and the rotating plates 81. When the top mold 33 is separated from the frame 32, the first pusher 84 can drive the rotating plate 81 to rotate. The rotation of the rotating plate 81 can drive the first drive member 41 to swing. Thus, the swing causes the limiting plate 42 to push the top mold 33 toward the frame 32, so that the top mold 33 can be flipped down and placed on the frame 32, replacing the manual mold closing action.

[0042] The mounting plate 83 is provided with two guide rods 831. The guide rods 831 pass through the fixed frame 2 and are connected to the limiting plate 42. The two guide rods 831 are respectively located on both sides of the first driving member 41, so that the first driving member 41 can drive the limiting plate 42 to move up and down along the guide rods 831, making the first driving member 41 drive the limiting plate 42 to move up and down more stably.

[0043] The blocking mechanism 9 includes a limiting stop 21 on one side edge of the fixed frame 2. The blocking mechanism 9 includes a second pushing member 91 and a movable block 92. The limiting stop 21 is provided on one side edge of the fixed frame 2, and there is a gap between the limiting stop 21 and one side of the rotating plate 81. The second pushing member 91 is located at the upper end of the fixed frame 2 and is connected to the movable block 92. The position of the movable block 92 corresponds to the gap. The second pushing member 91 can push the movable block 92 to be embedded in the gap, so that the rotating plate 81 is restricted from rotating. The upper end of the rotating plate 81 is provided with a notch, and the gap is formed between the limiting stop 21 and the notch. The second pusher 91 pushes the movable block 92 to be embedded in or away from the gap, so that the rotating plate 81 changes between a restricted rotation state and a rotatable state. When the limiting mechanism 4 needs to limit the top mold 33, the rotating plate 81 needs to be in a restricted rotation state. When the rotating plate 81 needs to be pushed to swing, the rotating plate 81 needs to be in a rotatable state.

[0044] The lifting mechanism 5 includes a second driving component 51 and a lifting frame 52. The second driving component 51 is mounted on the model station frame 1 and is connected to the lifting frame 52 and is used to drive the lifting frame 52 to move up and down.

[0045] The mold-flipping mechanism 6 includes a vertical limiting plate 61 and a connecting plate 62. The vertical limiting plate 61 is mounted on the mold station frame 1. The clamping mechanism 7 is movably mounted on the vertical limiting plate 61 and can be flipped along the upper end of the vertical limiting plate 61. One end of the connecting plate 62 is rotatably connected to the lifting frame 52, and the other end is rotatably connected to the clamping mechanism 7. The vertical limiting plate 61 has an elongated hole 611 extending vertically. The clamping mechanism 7 is located on one side of the mold 3 and can clamp and move the frame 32. The vertical movement range of the clamping mechanism 7 is limited to the length of the elongated hole 611. The clamping mechanism 7 can rotate around the vertical limiting plate 61. The lifting frame 52 is located below the clamping mechanism 7 and can lift the clamping mechanism 7 upwards. One end of the connecting plate 62 is rotatably connected to the lifting frame 52. The other end is rotatably connected to the clamping mechanism 7. The clamping mechanism 7 is in a limited position at the upper end of the elongated hole 611. When the lifting frame 52 continues to rise, it will push the clamping frame to rotate through the connecting plate 62, so that the clamping mechanism 7 drives the frame 32 and the top mold 33 to flip upward. When the clamping mechanism 7 is in the upward flipping state, the second driving member 51 can make the lifting frame 52 drive the clamping mechanism 7 to flip downward and make the clamping frame descend to the lower end of the elongated hole 611, and make the frame 32 close the mold and the bottom mold 31.

[0046] The clamping mechanism 7 includes a rotating plate 71, a clamping plate 72, a clamping cylinder 73, and a limiting block 74. The side of the frame 32 is provided with an outwardly extending rod 321. The clamping plate 72 is provided with a limiting groove 721. The rotating plate 71 is movably confined within the elongated hole 611. The clamping plate 72 is located on one side of the rotating plate 71. The limiting block 74 is located at one end of the clamping cylinder 73. The lifting frame 52 lifts the rotating plate 71 up to the limiting groove 721, which covers the extending rod 321. The clamping cylinder 73 controls the limiting block 74 to extend above the extending rod 321, so that the extending rod 321 is clamped between the clamping plate 72 and the limiting block 74. This ensures that the frame 32 remains clamped during the lifting process of the lifting mechanism 5 and the flipping process of the flipping mechanism 6, and that the frame 32 is limited and will not slip.

[0047] The working principle of this type of mold opening and closing device:

[0048] When mold 3 is in the state of mold station frame 1, the bottom mold 31 is fixed in the mold station frame 1, the frame 32 is on the bottom mold 31, and the top mold 33 is covered on the frame 32. The blocking mechanism 9 is activated, and the movable block 92 is driven to be embedded in the interval to prevent the limiting mechanism 4 from swinging.

[0049] In the process of opening mold 3, step one is to start the lifting mechanism 5. The second drive component 51 of the lifting mechanism 5 drives the rotating plate 71 of the clamping mechanism 7 to move upward along the vertical limiting plate 61. During the upward movement of the rotating plate 71, the extension rod 321 is clamped between the clamping plate 72 and the limiting block 74, so that the clamping frame 32 and the top mold 33 move upward with the lifting frame 52 of the lifting mechanism 5, so that the frame 32 is disengaged from the bottom mold 31.

[0050] Step 2: Since the lifting height of the clamping mechanism 7 is limited to the length of the elongated hole, the lifting mechanism 5 drives the rotating plate 71 of the clamping mechanism 7 to rise to the high position. That is, the lifting frame 52 can only drive the rotating plate 71 to rise to the upper position of the elongated hole 611, while the second driving member 51 continues to drive upward, so that the connecting plate 62 of the flipping mechanism 6 pushes the rotating plate 71 to clamp the frame 32 and the top mold 33 and flip it upward.

[0051] Step 3: When the frame 32 and the top mold 33 are flipped to the state below the limiting mechanism 4, the limiting mechanism 4 is activated. The first driving component 41 drives the limiting plate 42 to move downward until the baffle 331 is embedded in the limiting plate 42, so that the top mold 33 is in a limited state and the frame 32 is outside the limiting plate 42.

[0052] Step 4: Drive the lifting mechanism 5 to lower the lifting frame 52 a certain distance. During the descent of the lifting frame 52, the clamping mechanism 7 always clamps the frame 32. The flipping mechanism 6 drives the rotating plate 71 to clamp the frame 32 and the top mold 33 and flip them downward. However, since the top mold 33 is in a limited state, the frame 32 flips downward independently, so that the frame 32 and the top mold 33 are separated. The top mold 33 and the frame 32 are set at an angle and stay above the mold station frame 1, thus forming a space for the finished product to be taken out.

[0053] Step 5: The first driving component 41 drives the limiting plate 42 to move upward, so that the limiting plate 42 releases the state of the limiting baffle 331, and drives the lifting mechanism 5 to continue to descend until the frame 32 closes on the bottom mold 31. During the descent of the lifting mechanism 5, the top mold 33 flips down and covers the frame 32, and the frame 32 flips down to be parallel to the bottom mold 31 and continues to descend through the lifting mechanism 5 to close on the frame 32 and the bottom mold 31. This step is a method of directly completing the mold closing by descending through the lifting mechanism 5.

[0054] The process of mold 3 closing is completed by swing mechanism 8. Step 1: Start blocking mechanism 9 and drive movable block 92 to limit the gap between the stop edge 21 and one side of rotating plate 81, so that rotating plate 81 is in a rotatable state.

[0055] Step 2: Start the swing mechanism 8, drive the first pusher 84 to push the two rotating plates 81 to rotate around the rotating shaft 82. Since the first driveer 41 is located on the swing mechanism 8, when the two rotating plates 81 rotate, the first driveer 41 can swing, thereby pushing the top mold 33 to swing towards the side of the frame 32 during the swing process, and causing the baffle 331 to disengage from the U-shaped groove 421 of the limiting plate 42, so that the top mold 33 flips down and covers the frame 32.

[0056] Step 3: The second driving component 51 drives the lifting frame 52 to move downward. The second driving component 51 drives the lifting frame 52 to continue to descend until the frame 32 and the top mold 33 flip down to be parallel with the bottom mold 31. Then, the lifting frame 52 continues to descend to the frame 32 to close the mold and the bottom mold 31, thereby completing the mold closing of the mold 3.

[0057] The above is only one specific embodiment of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial modifications made to the present invention using this concept shall be considered as infringing the protection scope of the present invention.

Claims

1. A mold opening and closing device, comprising a mold station frame and a mold disposed on the mold station frame, the mold comprising a bottom mold, a frame, and a top mold, the frame being movably disposed on the bottom mold, one side of the top mold being rotatably disposed on the frame, and one side of the top mold having an outwardly protruding baffle; characterized in that: It also includes a fixed frame, a limiting mechanism, a mold flipping mechanism, a clamping mechanism, and a lifting mechanism; The flipping mechanism connects the clamping mechanism and the lifting mechanism. The lifting mechanism is connected to the clamping mechanism and is used to drive the clamping mechanism to lift the frame up and down. When the clamping mechanism is in a high position, it can be flipped around the flipping mechanism along one side. The fixed frame is mounted above the mold station frame. The limiting mechanism includes a first driving component and a limiting plate. The first driving component is mounted on the fixed frame and connected to the limiting plate, and is used to drive the limiting plate to move vertically up and down in the direction of the mold station frame. The limiting plate is used to restrict the top mold in the upward flipping state. When the limiting plate restricts the position of the top mold, the lifting mechanism can drive the frame to separate from the top mold by descending.

2. The mold opening and closing device according to claim 1, characterized in that: The lower end of the limiting plate is provided with an upwardly recessed U-shaped groove, and the baffle can be embedded in the U-shaped groove.

3. The mold opening and closing device according to claim 1, characterized in that: It also includes a swing mechanism, which includes two rotating plates, a rotating shaft, a mounting plate, and a first pushing member. The two rotating plates pass downward through the fixed frame and are rotatably arranged. The two rotating plates are arranged at intervals. The two ends of the mounting plate are respectively connected to each rotating plate. The first driving member is arranged on the mounting plate. The first pushing member is arranged on the upper end of the fixed frame and is rotatably connected to the upper end of one of the rotating plates. The rotating shaft is fixed on the fixed frame. The middle position of the rotating plate can rotate around the rotating shaft, so that the first pushing member can push the two rotating plates around the rotating shaft to drive the first driving member to swing.

4. The mold opening and closing device according to claim 3, characterized in that: It also includes a blocking mechanism. A limiting stop is provided on one side edge of the fixed frame. The blocking mechanism includes a second pushing member and a movable block. There is a gap between the limiting stop and one side of the rotating plate. The second pushing member is located at the upper end of the fixed frame and is connected to the movable block. The position of the movable block corresponds to the gap. The second pushing member can push the movable block to be embedded in the gap, so that the rotating plate is restricted from rotating.

5. The mold opening and closing device according to claim 3, characterized in that: The fixed frame is provided with two mounting blocks, which are respectively located on the outside of the rotating plate. The rotating shaft is fixedly inserted through the mounting blocks and the rotating plate.

6. The mold opening and closing device according to claim 3, characterized in that: The mounting plate is provided with two guide rods, which pass through the fixed frame and are connected to the limiting plate. The two guide rods are respectively located on both sides of the first driving member, so that the first driving member can drive the limiting plate to move up and down along the guide rods.

7. The mold opening and closing device according to claim 1, characterized in that: The lifting mechanism includes a second driving component and a lifting frame. The second driving component is mounted on the model station frame and is connected to the lifting frame to drive the lifting frame to move up and down.

8. The mold opening and closing device according to claim 7, characterized in that: The flipping mechanism includes a vertical limiting plate and a connecting plate. The vertical limiting plate is set on the mold station frame. The clamping mechanism is set on the vertical limiting plate and can be flipped along the upper end of the vertical limiting plate. One end of the connecting plate is rotatably connected to the lifting frame, and the other end is rotatably connected to the clamping mechanism.

9. The mold opening and closing device according to claim 8, characterized in that: The clamping mechanism includes a rotating plate, a clamping plate, a clamping cylinder, and a limiting block. The side of the frame is provided with an outwardly extending rod. The clamping plate is provided with a limiting groove. The rotating plate is movably mounted on the vertical limiting plate. The clamping plate is located on one side of the rotating plate. The limiting block is located at one end of the clamping cylinder. The lifting frame lifts the rotating plate up to the limiting groove and covers the extending rod. The clamping cylinder controls the limiting block to extend above the extending rod, so that the extending rod is clamped between the clamping plate and the limiting block.

10. A method for opening and closing a mold, characterized in that... A mold opening and closing device according to claim 3, comprising: When the mold is in the mold station frame state, the frame is on the bottom mold and the top mold cover is on the frame; Step 1: Start the lifting mechanism. The lifting mechanism drives the clamping mechanism to move upward along the flipping mechanism. During the upward movement of the clamping mechanism, the clamping frame and the top mold move upward with the lifting mechanism, so that the frame moves upward and separates from the bottom mold. Step 2: Due to the limitations of the flipping mechanism, the clamping mechanism can only rise to a limited height. If the lifting mechanism continues to drive upward while the clamping mechanism is in a high position, the clamping mechanism can drive the frame and the top mold to flip upward around the flipping mechanism along one side. Step 3: Once the frame and top mold are flipped to the position below the limiting mechanism, the limiting mechanism is activated. The first driving component drives the limiting plate downwards until the baffle is embedded in the limiting plate, so that the top mold is in a limited position and the frame is outside the limiting plate. Step 4: Drive the lifting mechanism to descend a certain distance. During the descent of the lifting mechanism, the clamping mechanism clamps the frame and the top mold and flips it downward around the flipping mechanism. Since the top mold is in a limited state, the frame flips downward independently, so that the frame and the top mold are separated and the top mold and the frame are set at an angle and stay above the mold station frame. Step 5: During the mold closing process, the first pusher pushes the rotating plate to rotate, which in turn drives the limiting plate to push the top mold to flip towards the frame. At the same time, the first drive drives the limiting plate to move upward, releasing the restriction on the baffle, so that the top mold and the frame are merged. Then, the lifting mechanism drives the top mold and the frame to descend until the frame and the bottom mold are closed.

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