Casting mold

Abstract

The utility model discloses a casting mold, belongs to the technical field of processing of anode plates for wet electrolytic zinc, and solves the problems that the casting time is long, the labor intensity is high, the uniformity of a lead layer wrapped outside a copper bar is poor, the product quality is influenced and the production efficiency is low in the prior art. Comprising a die rack with a bearing lower die plate hinged to the upper portion, and a die overturning hydraulic cylinder is arranged between the bearing lower die plate and the die rack. The left end and the right end of an overturning upper die plate arranged above the lower bearing die plate are movably connected with the two ends of the lower bearing die plate through opening and closing guide connecting plates respectively, an upper die opening and closing hydraulic cylinder is arranged between the opening and closing guide connecting plates and the lower bearing die plate, and a die fastening mechanism is arranged between the lower bearing die plate and the overturning upper die plate. The device is reasonable in design, compact in structure, low in labor intensity, high in production efficiency, stable in product quality and beneficial to automatic production, the mold cavity can be automatically opened and closed, and the mold can be turned over; the uniformity of a lead layer wrapping the outside of the cross beam copper bar after casting molding is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of anode plate processing for wet electrolytic zinc, and particularly relates to a casting mold. Background Art

[0002] At present, in the production process of the conductive crossbeam of the anode plate, lead water casting needs to be carried out on the copper bar in the shaping cavity. The existing casting operation process is as follows: the crossbeam copper bar that has been pre-tinned is placed into the fixed casting cavity by means of manual clamping and handling, and the cavity needs to be manually operated to be flipped and clamped; at the same time, the pouring of lead water depends on manual ladling of lead water from the lead pot and then slowly pouring it into the mold cavity. Moreover, the weight of each ladle of high-temperature lead water (the melting point of lead is about 300 degrees Celsius) ranges from 10 to 40 kilograms, and even for the conductive crossbeams of some structures, it is necessary to ladle lead water twice to complete the casting. This traditional operation method not only has a long casting time and a large physical labor intensity, but also, after casting and forming, the uniformity of the lead layer wrapped outside the crossbeam copper bar is poor, affecting the product quality. In addition, the weight of the cast conductive crossbeam is the total weight of the copper and lead blanks, the overall mass is large, and the mold temperature and part temperature after forming are usually greater than 150 degrees Celsius. During the process of mold opening and closing and taking out the conductive crossbeam, the physical energy consumption is very large and the production efficiency is low. Therefore, it is necessary to improve the lead water casting mold in the production process of the existing conductive crossbeam. Summary of the Utility Model

[0003] The utility model aims at the above problems and provides a casting mold that can automatically open and close the mold cavity and flip the mold, has a low labor intensity, a high production efficiency, good uniformity of the lead layer wrapped outside the crossbeam copper bar after casting and forming, stable product quality, and is conducive to automated production.

[0004] The technical solution adopted by the utility model is as follows: the casting mold includes a mold frame, and is characterized in that: a bearing lower template is arranged on the upper part of the mold frame, the lower side of the bearing lower template is hinged to a lower mold hinge seat arranged on the mold frame, and a mold flipping hydraulic cylinder is arranged between the bearing lower template and the mold frame. The fixed end of the mold flipping hydraulic cylinder is hinged to the front side of the mold frame, and the telescopic end of the mold flipping hydraulic cylinder is hinged to a flipping cylinder hinge ear plate arranged on the rear side of the bearing lower template; a flipping upper template is arranged above the bearing lower template, and the left and right ends of the flipping upper template are respectively movably connected to the two ends of the bearing lower template through opening and closing guide connecting plates, and upper mold opening and closing hydraulic cylinders are respectively arranged between the opening and closing guide connecting plates and the ends of the bearing lower template; mold pouring ports are respectively arranged at corresponding positions in the middle of the front sides of the flipping upper template and the bearing lower template, and a mold fastening mechanism is arranged between the bearing lower template and the flipping upper template.

[0005] The flipped upper template includes an upper template body. An upper mold casting cavity is provided on the lower side of the upper template body. The mold casting port is located on the front side of the upper mold casting cavity. The opening and closing guide connecting plates are respectively arranged at the left and right ends of the upper template body. The upper ends of the opening and closing guide connecting plates are fixedly connected to the ends of the upper template body, and the lower ends of the opening and closing guide connecting plates are movably connected to the ends of the load-bearing lower template. Through the separable assembly structure of the upper mold casting cavity of the flipped upper template and the lower mold casting cavity of the load-bearing lower template, a mold cavity for subsequent lead water casting of copper bars is formed, and it is convenient to take out the crossbeam casting after casting is completed.

[0006] An upper mold weight reduction structure is provided on the upper side of the upper template body. Reinforcing connecting plates are respectively arranged between the two ends of the upper mold weight reduction structure and the upper ends of the opening and closing guide connecting plates. The upper mold weight reduction structure is used to effectively reduce the weight of the upper template body, thereby facilitating the flexible control of the flipped upper template. At the same time, the connection structure strength between the upper template body and the opening and closing guide connecting plates on both sides is improved through the reinforcing connecting plates.

[0007] The load-bearing lower template includes a lower template body. A lower mold casting cavity is provided on the upper side of the lower template body. The mold casting port is located on the front side of the lower mold casting cavity. Lower mold hinge lugs for hinging with the lower mold hinge seat are provided on the lower side of the lower template body. The lower end of the upper mold opening and closing hydraulic cylinder is hinged to the end of the lower template body, and the upper end of the upper mold opening and closing hydraulic cylinder is hinged to the opening and closing hydraulic cylinder hinge part provided at the upper end of the opening and closing guide connecting plate. The load-bearing lower template is rotatably arranged on the lower mold hinge seat provided at the upper part of the mold frame through the lower mold hinge lugs, and the flipping position of the load-bearing lower template is controlled by the mold flipping hydraulic cylinder. At the same time, through the separable assembly structure of the lower mold casting cavity of the load-bearing lower template and the upper mold casting cavity of the flipped upper template, a mold cavity for subsequent lead water casting of copper bars is formed. The opening and closing action of the flipped upper template is driven by the expansion and contraction of the upper mold opening and closing hydraulic cylinder.

[0008] Connecting plate sliding guide posts are respectively and fixedly provided above the positions where the left and right ends of the lower template body are hinged to the lower end part of the upper mold opening and closing hydraulic cylinder. Correspondingly, a connecting plate guide chute for cooperating with the connecting plate sliding guide posts is also provided at the lower part of the opening and closing guide connecting plate. During the linear expansion and contraction of the upper mold opening and closing hydraulic cylinder, the fixed connecting plate sliding guide posts and the connecting plate guide chute on the opening and closing guide connecting plate are used for guiding cooperation, so that the flipped upper template can be flipped open and closed relative to the load-bearing lower template. Thus, when the flipped upper template and the load-bearing lower template are opened, the tinned crossbeam is positioned and placed in the lower mold casting cavity. And when the flipped upper template and the load-bearing lower template are closed, lead water is poured in through the mold casting port.

[0009] A casting ejecting block for ejecting the crossbeam casting is movably arranged in the lower die casting cavity, and the lower end of the casting ejecting block is connected to the telescopic end of a casting ejecting hydraulic cylinder vertically arranged on the lower side of the lower template body. After the crossbeam after tinning is cast in the casting cavity, the casting ejecting hydraulic cylinder extends to lift the casting ejecting block in the lower die casting cavity, and then the crossbeam casting is assisted to be ejected upward between the opened flipping upper template and the bearing lower template, facilitating the subsequent grasping and moving of the crossbeam casting.

[0010] The mold fastening mechanism includes mold fastening claws located on the front and rear sides of the bearing lower template. The middle parts of the mold fastening claws are respectively connected to the bearing lower template through fastening claw hinge seats, and the lower ends of two mold fastening claws at corresponding positions on the front and rear sides are respectively connected to the telescopic ends of fastening hydraulic cylinders arranged below the bearing lower template through fastening driving connecting rods. Moreover, the fastening hydraulic cylinders are connected to the bearing lower template through fastening connecting frames; correspondingly, fastening claw clamping parts are respectively arranged at the positions on the flipping upper template that are in contact with the fastening parts at the upper ends of the respective mold fastening claws. By the telescoping of the fastening hydraulic cylinders below the bearing lower template, the mold fastening claws hinged to the fastening driving connecting rods are driven to swing reciprocally around the rotation axes of the fastening claw hinge seats, and then the fastening parts at the upper ends of the respective mold fastening claws are cooperatively clamped with the fastening claw clamping parts on the flipping upper template, making the closed connection between the flipping upper template and the bearing lower template tighter, which is beneficial to subsequent lead water casting.

[0011] The beneficial effects of the present utility model: Since the present utility model adopts a mold rack with a bearing lower template arranged on the upper part, the lower side of the bearing lower template is hinged to a lower die hinge seat on the mold rack, a mold flipping hydraulic cylinder is arranged between the bearing lower template and the mold rack, the fixed end of the mold flipping hydraulic cylinder is hinged to the front side of the mold rack, and the telescopic end of the mold flipping hydraulic cylinder is hinged to a flipping cylinder hinge ear plate on the rear side of the bearing lower template; a flipping upper template is arranged above the bearing lower template, the left and right ends of the flipping upper template are respectively movably connected to the two ends of the bearing lower template through opening and closing guiding connecting plates, and upper die opening and closing hydraulic cylinders are respectively arranged between the opening and closing guiding connecting plates and the ends of the bearing lower template; mold casting ports are respectively arranged at the corresponding positions in the middle of the front sides of the flipping upper template and the bearing lower template, and the mold fastening mechanism is arranged between the bearing lower template and the flipping upper template. Therefore, its design is reasonable, the structure is compact, it can automatically open and close the mold cavity and flip the mold, the labor intensity is low, the production efficiency is high, the uniformity of the lead layer wrapped outside the crossbeam copper row after casting is good, the product quality is stable, which is beneficial to automated production. Description of the Drawings

[0012] Figure 1 is a structural schematic diagram of the present utility model.

[0013] Figure 2 isFigure 1 The A-direction view of

[0014] Figure 3 is Figure 1 A schematic diagram of a connection structure between the bearing lower template and the die clamping mechanism in

[0015] Figure 4 is Figure 3 The B-direction view of

[0016] Figure 5 is Figure 1 A schematic diagram of a connection structure between the flipping upper template and the opening / closing guiding connecting plate in

[0017] Figure 6 is Figure 5 The C-direction view of

[0018] Figure 7 is Figure 1 A schematic diagram of the use state in which the upper die opening / closing hydraulic cylinder drives the flipping upper template and the bearing lower template to close each other, and the die clamping mechanism clamps the upper and lower templates in

[0019] Explanation of the numbers in the figure: 1 Die frame, 2 Bearing lower template, 3 Lower die hinge seat, 4 Die flipping hydraulic cylinder, 5 Flipping upper template, 6 Opening / closing guiding connecting plate, 7 Upper die opening / closing hydraulic cylinder, 8 Die pouring port, 9 Die clamping mechanism, 10 Casting ejection hydraulic cylinder, 11 Lower template main body, 12 Lower die hinge ear plate, 13 Connecting plate sliding guide post, 14 Lower die pouring cavity, 15 Casting ejection block, 16 Clamping connecting frame, 17 Clamping hydraulic cylinder, 18 Clamping driving connecting rod, 19 Die clamping claw, 20 Claw hinge seat, 21 Flipping cylinder hinge ear plate, 22 Upper template main body, 23 Upper die pouring cavity, 24 Connecting plate guiding chute, 25 Opening / closing hydraulic cylinder hinge part, 26 Claw clamping part, 27 Upper die weight reduction structure, 28 Reinforcing connecting plate, 29 Cross beam after tinning. Specific implementation method

[0020] According to Figures 1 to 7Describe in detail the specific structure of the present utility model. The casting mold includes a mold frame 1. A bearing lower template 2 is arranged on the upper part of the mold frame 1. A lower mold hinge ear plate 12 on the lower side of the bearing lower template 2 is hinged to a lower mold hinge seat 3 arranged on the mold frame 1. Moreover, between the bearing lower template 2 and the mold frame 1, a mold turning hydraulic cylinder 4 for driving the overall turning of the mold is arranged. The fixed end of the mold turning hydraulic cylinder 4 is hinged to the front side of the mold frame 1, and the telescopic end of the mold turning hydraulic cylinder 4 is hinged to a turning cylinder hinge ear plate 21 arranged on the rear side of the bearing lower template 2, so as to control the turning of the closed mold by using the mold turning hydraulic cylinder 4 after casting, and further enable the lead water to fully flow in the casting cavity and evenly wrap around the outside of the crossbeam copper busbar. At the same time, a turning upper template 5 is arranged above the bearing lower template 2. The left and right ends of the turning upper template 5 are respectively movably connected to the connecting plate sliding guide columns 13 at both ends of the bearing lower template 2 through opening and closing guiding connecting plates 6, and between the opening and closing guiding connecting plates 6 and the ends of the bearing lower template 2, upper mold opening and closing hydraulic cylinders 7 for driving the movement of the turning upper template 5 are respectively arranged.

[0021] The turning upper template 5 is composed of an upper template main body 22. An upper mold casting cavity 23 is arranged on the lower side (the side in contact with the bearing lower template 2) of the upper template main body 22. A mold casting port 8 is arranged in the middle of the front side of the upper mold casting cavity 23. The opening and closing guiding connecting plates 6 are respectively arranged at the left and right ends of the upper template main body 22. The upper ends of the opening and closing guiding connecting plates 6 are fixedly connected to the ends of the upper template main body 22, and the lower ends of the opening and closing guiding connecting plates 6 are movably connected to the connecting plate sliding guide columns 13 at the ends of the bearing lower template 2 through connecting plate guiding chutes 24; thus, through the separable assembly structure of the upper mold casting cavity 23 of the turning upper template 5 and the lower mold casting cavity 14 of the bearing lower template 2, a mold cavity for casting lead water on the copper busbar is formed, and it is convenient to take out the crossbeam casting after casting. Moreover, an upper mold weight reduction structure 27 is arranged on the upper side of the upper template main body 22, and between the two ends of the upper mold weight reduction structure 27 and the upper ends of the opening and closing guiding connecting plates 6, reinforcing connecting plates 28 are respectively arranged. Therefore, the upper mold weight reduction structure 27 is used to effectively reduce the weight of the upper template main body 22 to facilitate the flexible control of the turning upper template 5; at the same time, the connection structure strength between the upper template main body 22 and the opening and closing guiding connecting plates 6 on both sides is improved through the reinforcing connecting plates 28.

[0022] The load-bearing lower template 2 is composed of a lower template body 11. On the upper side of the lower template body 11 (the side in contact with the flipping upper template 5), a lower mold casting cavity 14 is provided. In the middle of the front side of the lower mold casting cavity 14, a mold casting port 8 is provided at a position corresponding to the casting port of the upper mold casting cavity 23. And on the lower side of the lower template body 11, a lower mold hinge ear plate 12 is provided for hinging with the lower mold hinge seat 3. At the same time, the lower end of the upper mold opening and closing hydraulic cylinder 7 is hinged to the end of the lower template body 11, and the upper end of the upper mold opening and closing hydraulic cylinder 7 is hinged to the opening and closing hydraulic cylinder hinge part 25 provided at the upper end of the opening and closing guide connecting plate 6. Furthermore, the load-bearing lower template 2 is rotatably arranged on the lower mold hinge seat 3 provided at the upper part of the mold frame 1 through the lower mold hinge ear plate 12, and the flipping position of the load-bearing lower template 2 is controlled by the mold flipping hydraulic cylinder 4. At the same time, through the separable assembly structure of the lower mold casting cavity 14 of the load-bearing lower template 2 and the upper mold casting cavity 23 of the flipping upper template 5, a mold cavity for subsequent lead water casting of the copper bar is formed. And the opening and closing action of the flipping upper template 5 is driven by the telescopic movement of the upper mold opening and closing hydraulic cylinder 7.

[0023] On the left and right ends of the lower template body 11 of the load-bearing lower template 2, above the positions hinged to the lower end of the upper mold opening and closing hydraulic cylinder 7, connecting plate sliding guide columns 13 are respectively fixedly provided. Correspondingly, a connecting plate guide chute 24 for cooperating and connecting with the connecting plate sliding guide column 13 is also provided at the lower part of the opening and closing guide connecting plate 6. Thus, during the linear telescopic movement of the upper mold opening and closing hydraulic cylinder 7, by the cooperation and guiding of the fixed connecting plate sliding guide column 13 and the connecting plate guide chute 24 on the opening and closing guide connecting plate 6, the flipping upper template 5 can be flipped and opened relative to the load-bearing lower template 2. When the flipping upper template 5 and the load-bearing lower template 2 are opened, the tinned crossbeam 29 is positioned and placed in the lower mold casting cavity 14. And when the flipping upper template 5 and the load-bearing lower template 2 are closed, lead water is poured in through the mold casting port 8. In addition, two groups of casting ejecting blocks 15 for ejecting the crossbeam casting are movably arranged in the lower mold casting cavity 14. The lower ends of the casting ejecting blocks 15 are respectively connected to the telescopic ends of the casting ejecting hydraulic cylinders 10 arranged vertically on the lower side of the lower template body 11. Furthermore, after the tinned crossbeam 29 is cast in the casting cavity, the casting ejecting hydraulic cylinder 10 extends to lift the casting ejecting blocks 15 in the lower mold casting cavity 14, so as to assist in ejecting the crossbeam casting upward between the opened flipping upper template 5 and the load-bearing lower template 2, facilitating the subsequent grasping and moving of the crossbeam casting.

[0024] Moreover, between the bearing lower template 2 and the flipping upper template 5, there are two sets of die clamping mechanisms 9 for making the closing of the upper and lower templates more firm; the two sets of die clamping mechanisms 9 are symmetrically arranged on the left and right sides of the die pouring gate 8 respectively. The die clamping mechanism 9 includes die clamping claws 19 located on the front and rear sides of the bearing lower template 2, and the middle parts of the die clamping claws 19 are respectively connected to the front side of the lower template body 11 of the bearing lower template 2 through the clamping claw hinge seats 20. And, the lower ends of the two die clamping claws 19 at the corresponding positions on the front and rear sides are respectively connected to the telescopic ends of the vertically arranged clamping hydraulic cylinders 17 below the bearing lower template 2 through the clamping driving connecting rods 18, and the clamping hydraulic cylinders 17 are connected to the lower side of the lower template body 11 through the clamping connecting frames 16. Correspondingly, at the positions on the upper template body 22 of the flipping upper template 5 that are in contact with the clamping parts at the upper ends of the respective die clamping claws 19, there are respectively provided clamping claw engaging parts 26; and then, through the telescopic movement of the clamping hydraulic cylinders 17 below the bearing lower template 2, the die clamping claws 19 hinged to the clamping driving connecting rods 18 are driven to swing reciprocally around the rotation axis of the clamping claw hinge seats 20, so as to use the cooperation and engagement of the clamping parts at the upper ends of the respective die clamping claws 19 and the clamping claw engaging parts 26 on the flipping upper template 5 to make the closing connection between the flipping upper template 5 and the bearing lower template 2 more firm, which is beneficial to the subsequent pouring of molten lead.

[0025] When the casting die is in use, first, extend the upper die opening and closing hydraulic cylinder 7 to make the flipping upper template 5 flip upward relative to the bearing lower template 2, and then open the die cavity. After that, position and place the tinned crossbeam 29 in the lower die pouring cavity 14 of the bearing lower template 2. Then, retract the upper die opening and closing hydraulic cylinder 7 to make the flipping upper template 5 flip downward and close with the bearing lower template 2; moreover, use the telescopic movement of the clamping hydraulic cylinders 17 below the bearing lower template 2 to drive the die clamping claws 19 to rotate, so that the clamping parts at the upper ends of the die clamping claws 19 are engaged with the clamping claw engaging parts 26 on the flipping upper template 5, so as to make the closing connection between the flipping upper template 5 and the bearing lower template 2 more firm. After the flipping upper template 5 and the bearing lower template 2 are closed and fastened to each other, control the closed upper and lower templates by the die flipping hydraulic cylinder 4 to flip upward together around the rotation axis of the lower die hinge seat 3, so that the die pouring gate 8 of the template faces upward, facilitating the pouring of molten lead. Subsequently, pour molten lead into the die cavity formed by the upper die pouring cavity 23 and the lower die pouring cavity 14 through the die pouring gate 8; and, after casting, use the die flipping hydraulic cylinder 4 to control the flipping of the closed die, so that through the flipping movement of the die, the molten lead can flow fully in the pouring cavity and evenly wrap around the outside of the crossbeam copper row, ensuring the product quality.

[0026] After the crossbeam 29 after tinning is cast in the closed mold, the mold flipping hydraulic cylinder 4 flips the flipping upper template 5 and the bearing lower template 2 back to the initial horizontal arrangement position, and releases the mold fastening mechanism 9; then, the flipping upper template 5 is opened upward through the upper mold opening and closing hydraulic cylinder 7, and then the crossbeam casting is taken out. At the same time, when the crossbeam casting is taken out outward, the casting ejecting hydraulic cylinder 10 can be extended to lift the casting ejecting block 15 in the lower mold casting cavity 14 of the bearing lower template 2, so as to assist in ejecting the crossbeam casting upward, facilitating the grasping and moving of the crossbeam casting.

Claims

1. A casting mold, comprising a mold frame (1), characterized in that: The upper part of the mold frame (1) is provided with a bearing lower template (2). The lower side of the bearing lower template (2) is hinged to a lower die hinge seat (3) provided on the mold frame (1). And a mold flipping hydraulic cylinder (4) is arranged between the bearing lower template (2) and the mold frame (1). The fixed end of the mold flipping hydraulic cylinder (4) is hinged to the front side of the mold frame (1), and the telescopic end of the mold flipping hydraulic cylinder (4) is hinged to a flipping cylinder hinge ear plate (21) provided on the rear side of the bearing lower template (2). Above the bearing lower template (2), there is a flipping upper template (5). The left and right ends of the flipping upper template (5) are respectively movably connected to the two ends of the bearing lower template (2) through opening and closing guiding connecting plates (6). Upper die opening and closing hydraulic cylinders (7) are respectively arranged between the opening and closing guiding connecting plates (6) and the ends of the bearing lower template (2). Mold pouring ports (8) are respectively arranged at corresponding positions in the middle of the front sides of the flipping upper template (5) and the bearing lower template (2). And a mold fastening mechanism (9) is arranged between the bearing lower template (2) and the flipping upper template (5).

2. The casting mold according to claim 1, characterized in that: The flipping upper template (5) includes an upper template main body (22). The lower side of the upper template main body (22) is provided with an upper die pouring cavity (23). The mold pouring port (8) is located on the front side of the upper die pouring cavity (23). The opening and closing guiding connecting plates (6) are respectively arranged at the left and right ends of the upper template main body (22). The upper ends of the opening and closing guiding connecting plates (6) are fixedly connected to the ends of the upper template main body (22), and the lower ends of the opening and closing guiding connecting plates (6) are movably connected to the ends of the bearing lower template (2).

3. The casting mold according to claim 2, wherein: The upper side of the upper template main body (22) is provided with an upper die weight reduction structure (27). And strengthening connecting plates (28) are respectively arranged between the two ends of the upper die weight reduction structure (27) and the upper ends of the opening and closing guiding connecting plates (6).

4. The casting mold according to claim 1, wherein: The bearing lower template (2) includes a lower template main body (11). The upper side of the lower template main body (11) is provided with a lower die pouring cavity (14). The mold pouring port (8) is located on the front side of the lower die pouring cavity (14). The lower side of the lower template main body (11) is provided with a lower die hinge ear plate (12) for hinging with the lower die hinge seat (3). The lower end of the upper die opening and closing hydraulic cylinder (7) is hinged to the end of the lower template main body (11), and the upper end of the upper die opening and closing hydraulic cylinder (7) is hinged to an opening and closing hydraulic cylinder hinge part (25) provided at the upper end of the opening and closing guiding connecting plate (6).

5. The casting mold according to claim 4, characterized in that: Connecting plate sliding guide columns (13) are respectively and fixedly arranged above the left and right ends of the lower template main body (11) and at the positions where the lower ends of the upper die opening and closing hydraulic cylinders (7) are hinged. Correspondingly, connecting plate guiding chutes (24) for cooperating with the connecting plate sliding guide columns (13) are also arranged at the lower part of the opening and closing guiding connecting plate (6).

6. The casting mold according to claim 4, characterized in that: A casting ejecting block (15) for ejecting a crossbeam casting is movably arranged in the lower die pouring cavity (14). The lower end of the casting ejecting block (15) is connected to the telescopic end of a casting ejecting hydraulic cylinder (10) vertically arranged on the lower side of the lower template main body (11).

7. The casting mold according to claim 1, characterized in that: The mold fastening mechanism (9) includes mold fastening claws (19) located on the front and rear sides of the lower bearing template (2). The middle parts of the mold fastening claws (19) are respectively connected to the lower bearing template (2) through fastening claw hinge seats (20). The lower ends of two mold fastening claws (19) at corresponding positions on the front and rear sides are respectively connected to the telescopic ends of fastening hydraulic cylinders (17) arranged below the lower bearing template (2) through fastening drive connecting rods (18). Moreover, the fastening hydraulic cylinders (17) are connected to the lower bearing template (2) through fastening connecting frames (16). Correspondingly, fastening claw clamping parts (26) are respectively arranged at positions on the upper turning upper template (5) that are in contact with the fastening parts at the upper ends of the respective mold fastening claws (19).

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