Quick-release mold for producing precast concrete

Abstract

The utility model relates to the technical field of concrete prefabricated part production, and discloses a quick-release mold for concrete prefabricated part production, which comprises a mold body. According to the quick-disassembly type mold for producing the concrete prefabricated part, a right mold plate is pulled rightwards through hand holding, then when a disassembly frame moves, clamping wheels can move inwards, then a push wheel is pushed to move leftwards, then a moving plate is pushed to move, and then a guide shaft is pushed to move; then when the dismounting frame is completely separated from the surface of the positioning plate, the moving plate is restored to the original position under the action of the spring, then the push wheel is pushed to move, and then the clamping wheel is pushed to restore to the original position, so that the effect of quickly dismounting the left mold plate, the right mold plate and the prefabricated part is achieved. And as the mold cannot be detached, an operator cannot demold the prefabricated part conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete prefabricated part production, in particular to a quick-detachable mould for concrete prefabricated part production. Background Art

[0002] Precast concrete parts are a type of component used in the fields of construction, transportation, water conservancy, etc. They refer to concrete products that are processed and produced in a standardized and mechanized manner in a factory, and are assembled, connected, and combined with cast-in-place parts at the construction site.

[0003] The prior art publication number is CN 220218953 U, which is a mold for producing precast concrete parts. The patented technology can drive the extended lateral frame to adjust the length left and right along the position of the mold through the rotation adjustment of two threaded rods. In this way, the mold can freely adjust the length to produce precast concrete parts of different specifications and lengths, thereby improving the flexibility of mold production and saving production costs.

[0004] At present, in the field of construction, it is often necessary to produce prefabricated concrete parts, which can have the advantages of high quality, high efficiency, energy saving and environmental protection. It is an important way to realize the industrialization of construction. In order to produce the required prefabricated concrete parts, it is necessary to use a mold for the production of prefabricated concrete parts. However, during the use of the existing molds, since the existing molds are all fixed and cannot be disassembled, when the mold is filled with concrete and cooled to plasticity, the mold cannot be disassembled, which is not conducive to the operator to demold the prefabricated parts. If the operator forcibly disassembles the prefabricated parts, it is very easy to cause the prefabricated parts to break or break. Therefore, improvements are proposed to the molds.

[0005] In order to solve the above problems, we have made improvements and proposed a quick-detachable mold for the production of precast concrete parts. Utility Model Content

[0006] The purpose of the utility model is to provide a quick-detachable mold for producing prefabricated concrete parts, so as to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A quick-detachable mold for producing precast concrete parts, comprising a mold body, the mold body comprising a left mold plate, the right side of the left mold plate is movably connected to a right mold plate, the bottom of the right side of the left mold plate and the bottom of the left side of the right mold plate are both fixedly connected to a bottom plate, and the top and bottom of the front sides of the left mold plate and the right mold plate are both fixedly connected to a disassembly mechanism;

[0009] The disassembly mechanism includes a positioning plate and a disassembly frame, the back side of the positioning plate is installed on the front side of the left mold plate, the back side of the disassembly frame is installed on the front side of the left mold plate, the top and bottom of the right side of the inner cavity of the positioning plate are movably connected with a clamping wheel, the outer side of the surface of the clamping wheel penetrates to the outer side of the positioning plate, and the surface of the clamping wheel is clamped and connected to the inner cavity of the disassembly frame.

[0010] As a further solution of the utility model: the inner side of the left side of the clamping wheel is movably connected with a push wheel, the left side of the push wheel is movably connected with a movable plate, the left side of the movable plate is fixedly connected with a guide shaft, the left side of the guide shaft surface is movably connected with a fixed plate, and the surface of the fixed plate is fixedly connected to the left side of the inner cavity of the positioning plate.

[0011] As a further solution of the utility model: the left side of the guide shaft is fixedly connected to a limit plate, the limit plate is arranged in a circular structure, the surface of the guide shaft is sleeved with a spring, the right side of the spring is fixedly connected to the left side of the movable plate, and the left side of the spring is fixedly connected to the right side of the fixed plate.

[0012] As a further solution of the utility model: the front sides of the push wheel and the clamping wheel are fixedly connected with a connecting rod, the front side of the connecting rod penetrates to the front side of the positioning plate and is fixedly connected to a limiting block, and the limiting block is arranged in a circular structure.

[0013] As a further solution of the utility model: sliding grooves are provided on the top and bottom of the left and right sides of the inner cavity of the positioning plate, the back sides of the push wheel and the clamping wheel are fixedly connected with connecting shafts, the back side of the connecting shaft is fixedly connected with a sliding block, and the surface of the sliding block is movably connected to the inner cavity of the sliding groove.

[0014] As a further solution of the utility model: the top and bottom of the inner cavity of the disassembly frame are provided with card slots, and the card slots are arranged in an arc-shaped structure. The inner cavity of the card slots is card-connected to the surface of the card wheel, and the top and bottom of the left side of the inner cavity of the positioning plate and the top and bottom of the right side of the inner cavity of the disassembly frame are movably connected with insertion rods, and the back sides of the positioning plate and the disassembly frame are fixedly connected to the front sides of the left mold plate and the right mold plate respectively through the insertion rods.

[0015] As a further solution of the utility model: the top and bottom of the back sides of the left mold plate and the right mold plate are both installed with a rotating mechanism, and the rotating mechanism includes a rotating plate 1, the front side of the rotating plate 1 is installed on the back side of the left mold plate, the inner cavity of the rotating plate 1 is movably connected with a rotating shaft, the top and bottom of the rotating shaft surface are movably connected with a rotating plate 2, and the front side of the rotating plate 2 is installed on the back side of the right mold plate.

[0016] As a further solution of the utility model: the top and bottom of the rotating shaft are fixedly connected with circular plates, the circular plates are arranged in a circular structure, the inner cavities of the rotating plate 1 and the rotating plate 2 are movably connected with bolts, and the front sides of the rotating plate 1 and the rotating plate 2 are fixedly connected to the back sides of the left mold plate and the right mold plate respectively by bolts.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. The utility model pulls the right mold plate to the right by hand, and the movement of the right mold plate drives the disassembly frame to move, and then when the disassembly frame moves, the clamping wheel moves inward, and then pushes the pushing wheel to move to the left, and then pushes the moving plate to move, and then pushes the guide shaft to move, and then pushes the limiting plate to move, and then when the disassembly frame is completely separated from the surface of the positioning plate, the moving plate is restored to its original position under the action of the spring, and then the pushing wheel is pushed to move, and then the clamping wheel is pushed to restore its original position, thereby achieving the effect of fast disassembly between the left mold plate, the right mold plate and the prefabricated part, and can solve the problem that the existing molds are all fixed and non-detachable during use. When the mold is filled with concrete and cooled and plasticized, the mold cannot be disassembled, which is not conducive to the operator to demould the prefabricated part. If the operator forcibly disassembles the prefabricated part, it is very easy to cause the prefabricated part to break or break.

[0019] 2. The utility model achieves the function of limiting the guide shaft during the movement process by setting the limit plate, so as to prevent the guide shaft from falling off from the inner cavity of the fixed plate during the movement process. By setting the spring, when the limit block moves, the movable plate will be driven to move, so as to absorb the energy of the generated force. Further, when the limit block loses its force, the movable plate will return to its original position, so as to achieve the effect of disassembling the left mold plate, the right mold plate and the prefabricated part. By setting the connecting rod, the effect of supporting and guiding the clamping wheel and the pushing wheel in the moving state is achieved. By setting the limit block, the connecting rod in the moving state is limited, so as to prevent the connecting rod from falling off from the inner cavity of the positioning plate during the movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a quick-detachable mold for producing precast concrete parts;

[0021] Figure 2 A bottom view of a left mold plate in a quick-detachable mold for producing precast concrete parts;

[0022] Figure 3 A schematic diagram of the disassembly and connection of a transfer plate and a rotating shaft in a quick-detachable mold for producing precast concrete parts;

[0023] Figure 4 A schematic diagram of the structural connection between a clamping wheel and a disassembly frame in a quick-release mold for producing precast concrete parts;

[0024] Figure 5 A cross-sectional view of a positioning plate in a quick-detachable mold for producing precast concrete parts;

[0025] Figure 6 The present invention is a schematic diagram of the disassembly and connection of a slide groove and a sliding block in a quick-detachable mold for producing precast concrete parts.

[0026] In the figure: 1. mold body; 101. left mold plate; 102. right mold plate; 103. bottom plate; 2. disassembly mechanism; 201. positioning plate; 202. insertion rod; 203. slide groove; 204. limit plate; 205. slider; 206. fixed plate; 207. disassembly frame; 208. slot; 209. clamping wheel; 210. guide shaft; 211. spring; 212. moving plate; 213. push wheel; 214. limit block; 215. connecting rod; 216. connecting shaft; 3. rotating mechanism; 301. rotating plate 1; 302. bolt; 303. round plate; 304. rotating plate 2; 305. rotating shaft. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the implementation mode of the utility model clearer, the technical solution in the implementation mode of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation mode of the utility model. Obviously, the implementation mode described is a part of the implementation mode of the utility model, not all the implementation modes. Based on the implementation mode of the utility model, all other implementation modes obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0028] See also Figure 1 , 2 , 3, 4, 5 and 6, a quick-detachable mold for producing precast concrete parts, comprising a mold body 1, the mold body 1 comprising a left mold plate 101, the right side of the left mold plate 101 is movably connected to a right mold plate 102, the bottom of the right side of the left mold plate 101 and the bottom of the left side of the right mold plate 102 are both fixedly connected to a bottom plate 103, and the top and bottom of the front sides of the left mold plate 101 and the right mold plate 102 are both fixedly connected to a disassembly mechanism 2;

[0029] The disassembly mechanism 2 includes a positioning plate 201 and a disassembly frame 207. The back side of the positioning plate 201 is installed on the front side of the left mold plate 101, and the back side of the disassembly frame 207 is installed on the front side of the left mold plate 101. The top and bottom of the right side of the inner cavity of the positioning plate 201 are movably connected with a clamping wheel 209. The outer side of the surface of the clamping wheel 209 penetrates to the outer side of the positioning plate 201, and the surface of the clamping wheel 209 is clamped and connected to the inner cavity of the disassembly frame 207.

[0030] The inner side of the left side of the card wheel 209 is movably connected with a push wheel 213, and the left side of the push wheel 213 is movably connected with a movable plate 212. The left side of the movable plate 212 is fixedly connected with a guide shaft 210. The left side of the surface of the guide shaft 210 is movably connected with a fixed plate 206. The surface of the fixed plate 206 is fixedly connected to the left side of the inner cavity of the positioning plate 201. The card wheel 209 moves inward to push the limit block 214 to move to the left, and then pushes the movable plate 212 to move, and then pushes the guide shaft 210 to move. The inner cavity of the fixed plate 206 moves, and then drives the limit plate 204 to move, and at the same time, the spring 211 is compressed. Then, when the card wheel 209 is in the disassembly or installation state, the movable plate 212 is restored to its original position under the action of the spring 211, and then the limit block 214 is pushed to restore to its original position, and then the card wheel 209 is pushed to restore to its original position. At the same time, the movement of the push wheel 213 and the card wheel 209 pushes the connecting rod 215 and the connecting shaft 216 to move, and then drives the limit block 214 to move. Then, the slider 205 is made to slide in the inner cavity of the slide groove 203, so as to achieve the effect of installing, fixing and disassembling the left mold plate 101 and the right mold plate 102. The left side of the guide shaft 210 is fixedly connected to the limit plate 204, and the limit plate 204 is set in a circular structure. The surface of the guide shaft 210 is sleeved with a spring 211, and the right side of the spring 211 is fixedly connected to the left side of the moving plate 212, and the left side of the spring 211 is fixedly connected to the right side of the fixed plate 206. Through the setting of the limit plate 204 , so as to limit the guide shaft 210 during the movement, and prevent the guide shaft 210 from falling off from the inner cavity of the fixed plate 206 during the movement. By setting the spring 211, when the limit block 214 moves, it will drive the moving plate 212 to move, so as to absorb the energy of the force generated. Further, when the limit block 214 loses its force, the moving plate 212 will return to its original position, so as to achieve the effect of disassembling the left mold plate 101, the right mold plate 102 and the prefabricated part.

[0031] The front sides of the push wheel 213 and the card wheel 209 are fixedly connected with a connecting rod 215, and the front side of the connecting rod 215 passes through the front side of the positioning plate 201 and is fixedly connected to a limiting block 214. The limiting block 214 is arranged in a circular structure. Through the arrangement of the connecting rod 215, the card wheel 209 and the push wheel 213 in the moving state are supported and guided. Through the arrangement of the limiting block 214, the connecting rod 215 in the moving state is limited, so as to prevent the connecting rod 215 from being moved during the movement. The inner cavity of the positioning plate 201 is detached. The top and bottom of the left and right sides of the inner cavity of the positioning plate 201 are provided with a slide groove 203. The back sides of the push wheel 213 and the card wheel 209 are fixedly connected with a connecting shaft 216. The back side of the connecting shaft 216 is fixedly connected with a slider 205. The surface of the slider 205 is movably connected to the inner cavity of the slide groove 203. Through the setting of the slide groove 203, the slider 205 can move smoothly in the inner cavity of the positioning plate 201. Through the slider 205 and the connecting shaft 216, The setting can achieve the function of supporting and guiding the push wheel 213 in the moving state, thereby ensuring the working stability of the push wheel 213 and the card wheel 209. The top and bottom of the inner cavity of the disassembly frame 207 are both provided with card slots 208, and the card slots 208 are arranged in an arc-shaped structure. The inner cavity of the card slot 208 is connected to the surface of the card wheel 209 by card connection. The top and bottom of the inner cavity of the positioning plate 201 on the left side and the top and bottom of the inner cavity of the disassembly frame 207 on the right side are movably connected with the insertion rod 202. The positioning plate 201 and the disassembly frame 2 The back sides of 07 are respectively fixedly connected to the front sides of the left mold plate 101 and the right mold plate 102 through the insertion rod 202. The setting of the card slot 208 makes it easier for the operator to fix and disassemble the card wheel 209 and the disassembly frame 207. The setting of the insertion rod 202 makes it easier for the operator to install and fix the positioning plate 201 and the disassembly frame 207 to the front sides of the left mold plate 101 and the right mold plate 102, thereby achieving the effect of disassembling and demolding the left mold plate 101 and the right mold plate 102.

[0032] See also Figure 2 and 3A quick-detachable mold for producing precast concrete parts, the top and bottom of the back sides of the left mold plate 101 and the right mold plate 102 are both installed with a rotating mechanism 3, the rotating mechanism 3 includes a rotating plate 1 301, the front side of the rotating plate 1 301 is installed on the back side of the left mold plate 101, the inner cavity of the rotating plate 1 301 is movably connected with a rotating shaft 305, the top and bottom of the surface of the rotating shaft 305 are both movably connected with a rotating plate 2 304, the front side of the rotating plate 2 304 is installed on the back side of the right mold plate 102, and the rotating plate 304 is moved by hand. The plate 1 301 is placed on the back side of the left mold plate 101, and then the rotating plate 2 304 is placed on the back side of the right mold plate 102. Then, the bolt 302 is inserted into the inner cavity of the rotating plate 1 301 and the inner cavity of the rotating plate 2 304 by hand, so as to achieve the function of installing and fixing the rotating plate 1 301 and the rotating plate 2 304 in the working state. Then, the left mold plate 101 is rotated to the left by hand, and then the right mold plate 102 is rotated to the right by hand. Then, the rotation of the left mold plate 101 and the right mold plate 102 drives The rotating plate 1 301 and the rotating plate 2 304 rotate around the surface of the rotating shaft 305, so as to realize the demoulding and disassembly effect between the left mold plate 101, the right mold plate 102 and the preform by the operator. The top and bottom of the rotating shaft 305 are fixedly connected with the circular plate 303, and the circular plate 303 is arranged in a circular structure. The inner cavities of the rotating plate 1 301 and the rotating plate 2 304 are movably connected with bolts 302. The front sides of the rotating plate 1 301 and the rotating plate 2 304 are respectively fixedly connected to the left mold plate 101, the right mold plate 102 and the preform. The back side of the tool plate 101 and the right mold plate 102 is provided with a circular plate 303 to achieve the effect of limiting the rotating shaft 305 in the working state, thereby preventing the rotating shaft 305 from falling off from the inner cavity of the rotating plate 1 301 and the rotating plate 2 304 during operation. The setting of the bolts 302 makes it easier for operators to install and fix the rotating plate 1 301 and the rotating plate 2 304 on the back side of the left mold plate 101 and the right mold plate 102, thereby achieving the effect of disassembling and demoulding the prefabricated parts.

[0033] The working principle of the utility model is: first, put the rotating plate 1 301 on the back side of the left mold plate 101 by hand, then put the rotating plate 2 304 on the back side of the right mold plate 102, and then insert the bolt 302 into the inner cavity of the rotating plate 1 301 and the inner cavity of the rotating plate 2 304 by hand, so as to achieve the effect of installing and fixing the rotating plate 1 301 and the rotating plate 2 304 in the working state, and then rotate the left mold plate 101 to the right by hand, and then rotate the right mold plate 102 to the left by hand, and then drive the rotating plate 1 301 and the rotating plate 2 304 to rotate around the surface of the rotating shaft 305 through the rotation of the left mold plate 101 and the right mold plate 102, so as to achieve the effect of demolding and disassembling between the left mold plate 101, the right mold plate 102 and the prefabricated part by the operator. The result is that the positioning plate 201 is placed on the front side of the left mold plate 101 by hand, and the disassembly frame 207 is placed on the front side of the right mold plate 102, and then the insertion rod 202 is inserted into the inner cavity of the positioning plate 201 and the disassembly frame 207 by hand, so as to achieve the purpose of fixing the positioning plate 201 and the disassembly frame 207 to the front sides of the left mold plate 101 and the right mold plate 102 respectively, and then the left mold plate 101 is moved to the right, and then the positioning plate 201 is driven to move, and then the right mold plate 102 is moved to the left, and then the disassembly frame 207 is driven to move, and then when the positioning plate 201 initially enters the inner side of the disassembly frame 207, the clamping wheel 209 is moved inward, and then the moving plate 212 is pushed to move to the left, and then the moving plate 212 is pushed to move to the left. The movable plate 212 moves to the left, and then pushes the guide shaft 210 to move, and then pushes the limit plate 204 to move. Then, when the disassembly frame 207 reaches the specified position, the movable plate 212 is restored to its original position under the action of the spring 211, and then the push wheel 213 is pushed to restore its original position, and then the card wheel 209 is pushed to be connected to the inner cavity of the card slot 208. At the same time, the movement of the push wheel 213 and the card wheel 209 pushes the connecting rod 215 and the connecting shaft 216 to move, and then drives the limit block 214 to move, and then the slider 205 slides in the inner cavity of the slide slot 203, thereby achieving the effect of installing and fixing the left mold plate 101 and the right mold plate 102, and then the inner side of the bottom plate 103 is tightly fitted, and then The concrete is poured into the top of the bottom plate 103, and then the prefabricated parts inside the left mold plate 101 and the right mold plate 102 are cooled and shaped. Finally, after the shaping is completed, the right mold plate 102 is pulled to the right by hand, and the disassembly frame 207 is moved by the movement of the right mold plate 102. Then, when the disassembly frame 207 moves, the clamping wheel 209 moves inward, and then the push wheel 213 is pushed to move to the left, and then the moving plate 212 is pushed to move, and then the guide shaft 210 is pushed to move, and then the limit plate 204 is pushed to move. Then, when the disassembly frame 207 is completely separated from the surface of the positioning plate 201, the moving plate 212 is restored to its original position under the action of the spring 211, and then the push wheel 213 is pushed to move.Then push the clamping wheel 209 back to its original position, so as to achieve the effect of quick disassembly between the left mold plate 101, the right mold plate 102 and the preform.

[0034] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A quick-release mold for producing precast concrete parts, comprising a mold body (1), characterized in that: The mold body (1) comprises a left mold plate (101), the right side of the left mold plate (101) is movably connected to the right mold plate (102), the bottom of the right side of the left mold plate (101) and the bottom of the left side of the right mold plate (102) are both fixedly connected to a bottom plate (103), and the top and bottom of the front sides of the left mold plate (101) and the right mold plate (102) are both fixedly connected to a disassembly mechanism (2); The disassembly mechanism (2) comprises a positioning plate (201) and a disassembly frame (207); the back side of the positioning plate (201) is mounted on the front side of the left mold plate (101); the back side of the disassembly frame (207) is mounted on the front side of the left mold plate (101); the top and bottom of the right side of the inner cavity of the positioning plate (201) are movably connected to a clamping wheel (209); the outer side of the surface of the clamping wheel (209) extends to the outer side of the positioning plate (201); and the surface of the clamping wheel (209) is clamped and connected to the inner cavity of the disassembly frame (207).

2. The quick-release mold for producing precast concrete parts according to claim 1, characterized in that: The inner side of the left side of the clamping wheel (209) is movably connected to a push wheel (213), the left side of the push wheel (213) is movably connected to a movable plate (212), the left side of the movable plate (212) is fixedly connected to a guide shaft (210), the left side of the surface of the guide shaft (210) is movably connected to a fixed plate (206), and the surface of the fixed plate (206) is fixedly connected to the left side of the inner cavity of the positioning plate (201).

3. The quick-release mold for producing precast concrete parts according to claim 2, characterized in that: The left side of the guide shaft (210) is fixedly connected to a limit plate (204), the limit plate (204) is arranged in a circular structure, a spring (211) is sleeved on the surface of the guide shaft (210), the right side of the spring (211) is fixedly connected to the left side of the moving plate (212), and the left side of the spring (211) is fixedly connected to the right side of the fixed plate (206).

4. The quick-release mold for producing precast concrete parts according to claim 2, characterized in that: The front sides of the push wheel (213) and the clamping wheel (209) are both fixedly connected to a connecting rod (215), the front side of the connecting rod (215) penetrates the front side of the positioning plate (201) and is fixedly connected to a limiting block (214), and the limiting block (214) is arranged in a circular structure.

5. The quick-release mold for producing precast concrete parts according to claim 2, characterized in that: The top and bottom of the left and right sides of the inner cavity of the positioning plate (201) are provided with a slide groove (203), the back sides of the push wheel (213) and the clamping wheel (209) are fixedly connected to a connecting shaft (216), the back side of the connecting shaft (216) is fixedly connected to a slider (205), and the surface of the slider (205) is movably connected to the inner cavity of the slide groove (203).

6. The quick-release mold for producing precast concrete parts according to claim 1, characterized in that: The top and bottom of the inner cavity of the disassembly frame (207) are provided with a clamping groove (208), the clamping groove (208) is arranged in an arc-shaped structure, the inner cavity of the clamping groove (208) is clamped and connected to the surface of the clamping wheel (209), the top and bottom of the left side of the inner cavity of the positioning plate (201) and the top and bottom of the right side of the inner cavity of the disassembly frame (207) are movably connected with an insertion rod (202), and the back sides of the positioning plate (201) and the disassembly frame (207) are respectively fixedly connected to the front sides of the left mold plate (101) and the right mold plate (102) through the insertion rod (202).

7. The quick-release mold for producing precast concrete parts according to claim 1, characterized in that: A rotating mechanism (3) is installed at the top and bottom of the back side of the left mold plate (101) and the right mold plate (102), and the rotating mechanism (3) comprises a rotating plate 1 (301), the front side of which is installed on the back side of the left mold plate (101), the inner cavity of which is movably connected to a rotating shaft (305), the top and bottom of the surface of which are movably connected to a rotating plate 2 (304), and the front side of which is installed on the back side of the right mold plate (102).

8. The quick-release mold for producing precast concrete parts according to claim 7, characterized in that: The top and bottom of the rotating shaft (305) are fixedly connected to circular plates (303), and the circular plates (303) are arranged in a circular structure. The inner cavities of the rotating plate 1 (301) and the rotating plate 2 (304) are movably connected to bolts (302), and the front sides of the rotating plate 1 (301) and the rotating plate 2 (304) are fixedly connected to the back sides of the left mold plate (101) and the right mold plate (102) respectively through bolts (302).

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