Bottom die pre-camber adjusting device

Abstract

The utility model discloses a bottom die pre-camber adjusting device which comprises a pre-camber adjusting unit, the pre-camber adjusting unit comprises a bottom die body, a bearing plate and a fixing base, first mounting plates are arranged on the two sides of the fixing base, first mounting holes are formed in the first mounting plates, second mounting plates are arranged on the two sides of the bearing plate, second mounting holes are formed in the second mounting plates, and the bottom die body is arranged on the bearing plate. The first mounting plate and the second mounting plate are connected through a connecting rod, the connecting rod is arranged in the first mounting hole and the second mounting hole, a limiting mechanism is arranged between the fixing base and the bearing plate, and the second mounting hole is formed in the center line position of the second mounting plate and is away from one end of the bottom die body. The second mounting hole is formed in the end, away from the bottom die body, of the second mounting plate. According to the utility model, the rejection rate and the damage rate of the precast beam are reduced, and the qualification rate of the precast beam is improved, so that the economic loss is greatly reduced, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the field of prefabricated beam production, in particular to a bottom mold pre-camber adjustment device. Background Art

[0002] The bottom formwork is the bottom template for precast beam production, which is used for shaping and supporting the bottom contour surface of the precast beam. With the increasing requirements for the process flow and environmental protection of road and bridge construction, the demand for precast beams is increasing. How to reduce the damage to the precast beam body during the production process and improve the qualification rate of the precast beam itself has become a common demand in the industry. After the precast beam is cast and formed, the ordinary bottom formwork will have a pre-arch due to the self-weight of the precast beam itself during hoisting, which will make the bottom surface of the end of the precast beam unable to fit with the bottom formwork, and will cause wear during the hoisting process, which will cause the precast beam to be scrapped. Therefore, it is necessary to solve the problem that after the precast beam is formed and hoisted, the self-weight of the precast beam itself forms a downward arch, which causes the friction between the bottom surface of the end of the precast beam and other devices or the bottom formwork or the bottom surface, causing the precast beam to wear. Therefore, it is urgent to develop a device to solve the problem of adjusting the pre-arch of the bottom formwork to solve the problems existing in the prior art. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a bottom mold pre-camber adjustment device.

[0004] The utility model adopts the following technical solutions:

[0005] A bottom mold pre-curvature adjustment device is provided, comprising a pre-curvature adjustment unit, the pre-curvature adjustment unit comprising a bottom mold body, a load-bearing plate, and a fixed seat, mounting plates 1 are provided on both sides of the fixed seat, mounting holes 1 are provided on the mounting plates, mounting plates 2 are provided on both sides of the load-bearing plate, mounting holes 2 are provided on the mounting plates 2, the mounting plates 1 and 2 are connected by a connecting rod, the connecting rod is arranged in the mounting holes 1 and 2, a limiting mechanism is arranged between the fixed seat and the load-bearing plate, the mounting hole 2 is arranged at the midline position of the mounting plate 2 and away from one end of the bottom mold body, and the mounting hole 2 is arranged on the mounting plate 2 and away from one end of the bottom mold body.

[0006] Further, the limiting mechanism includes a driving mechanism and a limiting rod. A limiting hole 1 is provided on one side of the mounting hole 1, and the limiting hole 1 is arranged close to the bottom mold body. A limiting hole 2 is provided on one side of the mounting hole 2, and the limiting hole 2 is arranged close to the bottom mold body. A limiting rod is connected to the output end of the driving mechanism, and the driving mechanism is arranged on a fixed base. The limiting rod is arranged in limiting hole 1 and limiting hole 2. The mounting plate 2 on the load-bearing plate is arranged on the outside of the mounting plate 1 on the fixed base, and the two mounting plates 1 are arranged between the two mounting plates 2.

[0007] Furthermore, the driving mechanism adopts an oil cylinder, a gas cylinder, a hydraulic cylinder, or an electric cylinder.

[0008] Furthermore, a limit plate is provided at one end of the fixing seat close to the bottom mold body, and the limit plate is used to limit the rotation range of the load-bearing plate when it rotates with the connecting rod as the center under the action of its own weight.

[0009] Further, the limiting mechanism includes an adjusting cylinder, a mounting plate three, and a mounting rod. The inner side of the mounting plate one is provided with a mounting plate three, and the mounting plate three is provided with a mounting hole three. The mounting hole three is arranged at one end close to the bottom mold body. The mounting plate one and the mounting plate three are connected by a mounting rod, and the mounting rod is arranged in the mounting hole one and the mounting hole three. The fixed end of the adjusting cylinder is provided with a connecting ear one, and the fixed end is arranged on the mounting rod through the connecting ear one, and the end of the adjusting cylinder can rotate on the mounting rod;

[0010] The second mounting plate is provided with a second mounting hole, a fourth mounting hole is provided on one side of the second mounting hole, the fourth mounting hole is arranged at one end close to the bottom mold body, a rotating rod is provided on the fourth mounting hole, and a second connecting ear is provided at the output end of the adjusting cylinder, the second connecting ear is installed on the rotating rod, and the output end of the adjusting cylinder can rotate on the rotating rod.

[0011] Furthermore, the adjusting cylinder is an oil cylinder, a gas cylinder, a hydraulic cylinder or an electric cylinder.

[0012] Furthermore, the connecting rod is a rotating shaft or a rotating pin.

[0013] Furthermore, the pre-curvature adjustment unit is arranged at two ends of the bottom mold body.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model discloses a bottom mold pre-arch adjustment device. The bottom mold pre-arch adjustment device is provided at both ends of the bottom mold. The load-bearing plate will adapt itself according to the size of the arch of the prefabricated beam. The application scenarios are wider and the fault tolerance is high. Under other working conditions, the electric cylinder will drive the limit pin to be inserted, and the weighing seat and the fixed seat will form a whole without shaking.

[0016] The utility model adopts a limiting mechanism including a driving mechanism and a limiting rod. A limiting hole 1 is provided on one side of the mounting hole 1, and the limiting hole 1 is arranged close to the bottom mold body. A limiting hole 2 is provided on one side of the mounting hole 2, and the limiting hole 2 is arranged close to the bottom mold body. A limiting rod is connected to the output end of the driving mechanism. The driving mechanism is arranged on a fixed base, and the limiting rod is arranged in the limiting hole 1 and the limiting hole 2. The mounting plate 2 on the load-bearing plate is arranged on the outside of the mounting plate 1 on the fixed base. A limiting plate is provided at one end of the fixed base close to the bottom mold body, and the limiting plate limits the rotation range of the load-bearing plate when it rotates with the connecting rod as the center under the action of its own weight. The downward rotation angle of the load-bearing plate is too large.

[0017] When the precast beam is transferred and hoisted, under the action of the deadweight of the load-bearing plate, the upper end surface of the load-bearing plate and the upper end surface of the bottom mold are located at the same horizontal plane; at this time, the driving mechanism drives or pushes the limit rod to insert into the limit hole 1 and the limit hole 2 to ensure that the load-bearing plate and the fixing seat become a whole;

[0018] When the precast beam is transferred and lifted, under the action of the driving mechanism, the limit rod withdraws from the limit hole one and the limit hole two. At this time, the load-bearing plate can rotate with the connecting rod as the center. When the precast beam forms an arch downward (bends downward) under the action of gravity, the ends of the precast beam at both ends sag and squeeze the load-bearing plate. At this time, under the action of the squeezing force of the precast beam, the load-bearing plate rotates upward with the connecting rod as the center and rotates around the connecting rod, ensuring that the load-bearing plate fits with the ends of the precast beam at both ends during the lifting process. Therefore, it will not cause damage to the bottom surface of the precast beam end, reducing the scrap rate and damage rate of the precast beam, and improving the qualified rate of the precast beam, thereby greatly reducing economic losses and saving costs.

[0019] The utility model also adopts another technical solution to implement, the limiting mechanism includes an adjusting cylinder, a mounting plate three, and a mounting rod, the inner side of the mounting plate one is provided with a mounting plate three, the mounting plate three is provided with a mounting hole three, the mounting hole three is arranged at one end close to the bottom mold body, the mounting plate one and the mounting plate three are connected by a mounting rod, the mounting rod is arranged in the mounting hole one and the mounting hole three, the fixed end of the adjusting cylinder is provided with a connecting ear one, the fixed end is arranged on the mounting rod through the connecting ear one, and the end of the adjusting cylinder can rotate on the mounting rod;

[0020] The second mounting plate is provided with a second mounting hole, a fourth mounting hole is provided on one side of the second mounting hole, the fourth mounting hole is arranged at one end close to the bottom mold body, a rotating rod is provided on the fourth mounting hole, and a second connecting ear is provided at the output end of the adjusting cylinder, the second connecting ear is installed on the rotating rod, and the output end of the adjusting cylinder can rotate on the rotating rod.

[0021] When the precast beam is lifted, under the action of the adjusting cylinder, the upper end surface of the load-bearing plate and the upper end surface of the bottom mold are in the same plane, forming a whole with the fixed seat; when the precast beam needs to be transferred and lifted, the relevant specification parameters of the precast beam are input into the control system in advance, and the arch of the precast beam is automatically calculated and fed back to the leveling cylinder control element. When the precast beam forms an arch and the end droops, under the action of the leveling cylinder, the lifting angle of the load-bearing plate is close to the arch of the precast beam, and the upper surface of the load-bearing plate is in surface contact with the bottom surface of the end of the precast beam, and will not be squeezed by the bottom surface of the end of the precast beam, and will not cause damage to the bottom surface of the end of the precast beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an overall schematic diagram of the bottom mold pre-arch adjustment device described in Example 1 of the utility model.

[0023] Figure 2 It is a structural schematic diagram of the bottom mold pre-arch adjustment device described in Example 1 of the utility model.

[0024] Figure 3 It is a structural schematic diagram of a bottom mold pre-camber adjustment device provided at the other end of the precast beam in Example 1 of the utility model.

[0025] Figure 4 It is a structural schematic diagram of the bottom mold pre-arch adjustment device described in Example 2 of the utility model.

[0026] Figure 5 It is an enlarged structural schematic diagram of part A of the bottom mold pre-arch adjustment device described in Example 2 of the utility model.

[0027] In the attached figure:

[0028] 1. Bottom mold body; 2. Load-bearing plate; 3. Fixed seat; 4. Mounting plate one; 5. Mounting hole one; 6. Mounting plate two; 7. Mounting hole two; 8. Connecting rod; 9. Limit rod; 10. Limit hole one; 11. Limit hole two; 12. Limit plate; 13. Mounting plate three; 14. Mounting hole three; 15. Mounting rod; 16. Connecting ear one; 17. Mounting hole four; 18. Rotating rod; 19. Connecting ear two; 20. Precast beam. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with specific implementation methods. The drawings are only used for exemplary descriptions, and are only schematic diagrams, not actual pictures, and cannot be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0030] Example 1

[0031] like Figures 1 to 3 As shown, a bottom mold pre-camber adjustment device is provided, including a pre-camber adjustment unit, the pre-camber adjustment unit includes a bottom mold body 1, a bearing plate 2, and a fixing seat 3, mounting plates 1 4 are provided on both sides of the fixing seat 3, mounting holes 1 5 are provided on the mounting plates, mounting plates 2 6 are provided on both sides of the bearing plate 2, mounting holes 2 7 are provided on the mounting plates 2 6, the mounting plates 1 4 and the mounting plates 2 6 are connected by a connecting rod 8, the connecting rod 8 is arranged in the mounting holes 1 5 and the mounting holes 2 7, a limiting mechanism is provided between the fixing seat 3 and the bearing plate 2, the mounting hole 2 7 is arranged at the midline position of the mounting plate 2 6 and away from one end of the bottom mold body 1, as shown in FIG. Figure 1 As shown, the second mounting hole 7 is arranged at the left end of the second mounting plate 6 , and the second mounting hole 7 is arranged on the second mounting plate 6 and is away from one end of the bottom mold body 1 .

[0032] exist Figure 1 The middle mounting hole 15 and the mounting hole 27 overlap, the limiting mechanism includes a driving mechanism and a limiting rod 9, a limiting hole 10 is provided on one side of the mounting hole 15, and the limiting hole 10 is arranged close to the bottom mold body 1, a limiting hole 21 is provided on one side of the mounting hole 27, and the limiting hole 211 is arranged close to the bottom mold body 1, the output end of the driving mechanism is connected with a limiting rod 9, the driving mechanism is arranged on a fixed base, the limiting rod 9 is arranged in the limiting hole 10 and the limiting hole 21, the mounting plate 2 6 on the load-bearing plate 2 is arranged on the outside of the mounting plate 1 4 on the fixed base, and the two mounting plates 1 4 are arranged between the two mounting plates 2.

[0033] The driving mechanism adopts an oil cylinder, an air cylinder, a hydraulic cylinder, or an electric cylinder.

[0034] A limiting plate 12 is provided at one end of the fixing seat 3 close to the bottom mold body 1 , and the limiting plate 12 is used to limit the rotation range of the load-bearing plate 2 when it rotates around the connecting rod 8 as the center under the action of its own weight.

[0035] The connecting rod 8 is a rotating shaft or a rotating pin.

[0036] like Figure 3 As shown, the pre-camber adjustment unit is arranged at two ends of the bottom mold body 1.

[0037] The utility model discloses a bottom mold pre-arch adjustment device, at both ends of the bottom mold; the load-bearing plate 2 will adapt itself according to the size of the arch of the prefabricated beam 20, with a wider range of application scenarios and a high degree of fault tolerance. Under other working conditions, the electric cylinder will drive the limit pin to be inserted, and the weighing seat and the fixed seat 3 will form a whole without shaking.

[0038] The utility model adopts a limiting mechanism including a driving mechanism and a limiting rod 9. A limiting hole 10 is provided on one side of the mounting hole 15, and the limiting hole 10 is arranged close to the bottom mold body 1. A limiting hole 2 11 is provided on one side of the mounting hole 2 7, and the limiting hole 2 11 is arranged close to the bottom mold body 1. The output end of the driving mechanism is connected with a limiting rod 9. The driving mechanism is arranged on a fixed base, and the limiting rod 9 is arranged in the limiting hole 10 and the limiting hole 2 11. The mounting plate 2 6 on the load-bearing plate 2 is arranged on the outside of the mounting plate 1 4 on the fixed base. A limiting plate 12 is provided on one end of the fixed seat 3 close to the bottom mold body 1, and the limiting plate 12 limits the rotation range of the load-bearing plate 2 when it rotates with the connecting rod 8 as the center under the action of its own weight. The downward rotation angle of the load-bearing plate 2 is too large.

[0039] When the precast beam 20 is transferred and hoisted, under the action of the deadweight of the load-bearing plate 2, the upper end surface of the load-bearing plate 2 and the upper end surface of the bottom mold are located at the same horizontal plane; at this time, the driving mechanism drives or pushes the limit rod 9 to insert into the limit hole 10 and the limit hole 2 11, ensuring that the load-bearing plate 2 and the fixing seat 3 become a whole;

[0040] When the prefabricated beam 20 is transferred and lifted, under the action of the driving mechanism, the limit rod 9 withdraws from the limit hole 10 and the limit hole 2 11. At this time, the load-bearing plate 2 can rotate with the connecting rod 8 as the center. When the prefabricated beam 20 forms an arch downward (bends downward) under the action of gravity, the ends of the two ends of the prefabricated beam 20 sag and squeeze the load-bearing plate 2. At this time, under the action of the squeezing force of the prefabricated beam 20, the load-bearing plate 2 rotates upward with the connecting rod 8 as the center and rotates around the connecting rod 8, ensuring that the load-bearing plate 2 fits with the ends of the two ends of the prefabricated beam 20 during the lifting process. Therefore, the bottom surface of the end of the prefabricated beam 20 will not be damaged, the scrap rate and damage rate of the prefabricated beam 20 are reduced, and the qualified rate of the prefabricated beam 20 is improved, thereby greatly reducing economic losses and saving costs.

[0041] Example 2

[0042] like Figures 4-5 As shown, a bottom mold pre-camber adjustment device is provided, including a pre-camber adjustment unit, the pre-camber adjustment unit includes a bottom mold body 1, a bearing plate 2, and a fixing seat 3, mounting plates 1 4 are provided on both sides of the fixing seat 3, mounting holes 1 5 are provided on the mounting plates, mounting plates 2 6 are provided on both sides of the bearing plate 2, mounting holes 2 7 are provided on the mounting plates 2 6, the mounting plates 1 4 and the mounting plates 2 6 are connected by a connecting rod 8, the connecting rod 8 is arranged in the mounting holes 1 5 and the mounting holes 2 7, a limiting mechanism is provided between the fixing seat 3 and the bearing plate 2, the mounting hole 2 7 is arranged at the midline position of the mounting plate 2 6 and away from one end of the bottom mold body 1, as shown in FIG. Figure 4As shown, the second mounting hole 7 is arranged at the left end of the second mounting plate 6, and the second mounting hole 7 is arranged on the second mounting plate 6 and is away from one end of the bottom mold body 1. Figure 4 The middle mounting hole 5 and the middle mounting hole 7 overlap, so the middle mounting hole 5 is not shown.

[0043] The limiting mechanism includes an adjustment cylinder, a mounting plate 3 13, and a mounting rod 15. The mounting plate 3 13 is provided on the inner side of the mounting plate 14. The mounting plate 3 13 is provided with a mounting hole 3 14. The mounting hole 3 14 is arranged at one end close to the bottom mold body 1. The mounting plate 14 and the mounting plate 3 13 are connected by a mounting rod 15. The mounting rod 15 is arranged in the mounting hole 15 and the mounting hole 3 14. The fixed end of the adjustment cylinder is provided with a connecting ear 16. The fixed end is arranged on the mounting rod 15 through the connecting ear 16. The end of the adjustment cylinder can rotate on the mounting rod 15. The mounting rod 15 adopts a pin shaft. The end of the adjustment cylinder is hinged to the mounting rod 15 through a hinge;

[0044] Furthermore, the end of the adjusting cylinder may be directly hinged to the bottom surface of the load-bearing plate via a hinge, without providing the mounting rod 15 .

[0045] The second mounting plate 6 is provided with a second mounting hole 7, and a fourth mounting hole 17 is provided on one side of the second mounting hole 7. The fourth mounting hole 17 is arranged at one end close to the bottom mold body 1, and a rotating rod 18 is provided on the fourth mounting hole 17. The output end of the adjusting cylinder is provided with a second connecting ear 19, and the second connecting ear 19 is installed on the rotating rod 18. The output end of the adjusting cylinder can rotate on the rotating rod 18. The output end of the adjusting cylinder is hinged to the rotating rod 18 through a hinge.

[0046] Furthermore, the output end of the adjusting cylinder can be directly hinged to the top surface of the fixing seat through a hinge, without the need to set the rotating rod 18.

[0047] The regulating cylinder is an oil cylinder, an air cylinder, a hydraulic cylinder or an electric cylinder.

[0048] The connecting rod 8 is a rotating shaft or a rotating pin.

[0049] The pre-camber adjustment units are arranged at two ends of the bottom mold body 1 .

[0050] The utility model also adopts another technical solution to implement, the limiting mechanism includes an adjusting cylinder, a mounting plate three 13, and a mounting rod 15, the inner side of the mounting plate one 4 is provided with a mounting plate three 13, the mounting plate three 13 is provided with a mounting hole three 14, the mounting hole three 14 is arranged at one end close to the bottom mold body 1, the mounting plate one 4 and the mounting plate three 13 are connected by a mounting rod 15, the mounting rod 15 is arranged in the mounting hole one 5 and the mounting hole three 14, the fixed end of the adjusting cylinder is provided with a connecting ear one 16, the fixed end is arranged on the mounting rod 15 through the connecting ear one 16, and the end of the adjusting cylinder can rotate on the mounting rod 15;

[0051] The mounting plate 26 is provided with a mounting hole 27, one side of the mounting hole 27 is provided with a mounting hole 4 17, the mounting hole 4 17 is arranged at one end close to the bottom mold body 1, the mounting hole 4 17 is provided with a rotating rod 18, the output end of the adjusting cylinder is provided with a connecting ear 2 19, the connecting ear 2 19 is installed on the rotating rod 18, and the output end of the adjusting cylinder can rotate on the rotating rod 18.

[0052] When the precast beam 20 is lifted, under the action of the adjusting cylinder, the upper end surface of the load-bearing plate 2 is in the same plane as the upper end surface of the bottom mold, and forms a whole with the fixing seat 3; when the precast beam 20 needs to be transferred and lifted, the relevant specification parameters of the precast beam 20 are input into the control system in advance, and the arch of the precast beam 20 is automatically calculated and fed back to the leveling cylinder control element. When the precast beam 20 forms an arch and the end droops, under the action of the leveling cylinder, the load-bearing plate 2 is lifted at an angle close to the arch of the precast beam 20, and the upper surface of the load-bearing plate 2 is in surface contact with the bottom surface of the end of the precast beam 20, and will not be squeezed by the bottom surface of the end of the precast beam 20, and will not cause damage to the bottom surface of the end of the precast beam 20.

[0053] Obviously, the above embodiments are only examples for clearly illustrating the technical solution of the utility model, and are not limitations on the implementation methods of the utility model. The above-mentioned connection methods: movable connection, fixed connection, connection, connection, connection, etc. are all one or more of welding, bolt connection, riveting, interlocking connection, hinged or pin connection, etc. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the scope of the utility model.

Claims

1. A bottom mold pre-camber adjustment device, comprising a pre-camber adjustment unit, wherein the pre-camber adjustment unit comprises a bottom mold body, a bearing plate, and a fixing seat, characterized in that: A mounting plate 1 is provided on both sides of the fixing seat, a mounting hole 1 is provided on the mounting plate, a mounting plate 2 is provided on both sides of the load-bearing plate, a mounting hole 2 is provided on the mounting plate 2, the mounting plate 1 and the mounting plate 2 are connected by a connecting rod, the connecting rod is arranged in the mounting hole 1 and the mounting hole 2, a limiting mechanism is provided between the fixing seat and the load-bearing plate, and the mounting hole 2 is arranged on the mounting plate 2 and away from one end of the bottom mold body.

2. A bottom mold pre-camber adjustment device according to claim 1, characterized in that: The limiting mechanism includes a driving mechanism and a limiting rod. A limiting hole 1 is provided on one side of the mounting hole 1, and the limiting hole 1 is arranged close to the bottom mold body. A limiting hole 2 is provided on one side of the mounting hole 2, and the limiting hole 2 is arranged close to the bottom mold body. A limiting rod is connected to the output end of the driving mechanism, and the driving mechanism is arranged on a fixed base. The limiting rod is arranged in the limiting hole 1 and the limiting hole 2. The mounting plate 2 on the load-bearing plate is arranged on the outside of the mounting plate 1 on the fixed base.

3. A bottom mold pre-camber adjustment device according to claim 2, characterized in that: The driving mechanism adopts an oil cylinder, an air cylinder, a hydraulic cylinder, or an electric cylinder.

4. A bottom mold pre-camber adjustment device according to claim 2, characterized in that: A limiting plate is provided at one end of the fixing seat close to the bottom mold body, and the limiting plate is used to limit the rotation range of the load-bearing plate when it rotates with the connecting rod as the center under the action of its own weight.

5. The bottom mold pre-camber adjustment device according to claim 1, characterized in that: The limiting mechanism includes an adjusting cylinder, a mounting plate three, and a mounting rod. The inner side of the mounting plate one is provided with a mounting plate three, and the mounting plate three is provided with a mounting hole three. The mounting hole three is arranged at one end close to the bottom mold body. The mounting plate one and the mounting plate three are connected by a mounting rod, and the mounting rod is arranged in the mounting hole one and the mounting hole three. The fixed end of the adjusting cylinder is provided with a connecting ear one, and the fixed end is arranged on the mounting rod through the connecting ear one. The end of the adjusting cylinder can rotate on the mounting rod. The second mounting plate is provided with a second mounting hole, a fourth mounting hole is provided on one side of the second mounting hole, the fourth mounting hole is arranged at one end close to the bottom mold body, a rotating rod is provided on the fourth mounting hole, and a second connecting ear is provided at the output end of the adjusting cylinder, the second connecting ear is installed on the rotating rod, and the output end of the adjusting cylinder can rotate on the rotating rod.

6. A bottom mold pre-camber adjustment device according to claim 5, characterized in that: The regulating cylinder is an oil cylinder, a gas cylinder, a hydraulic cylinder or an electric cylinder.

7. The bottom mold pre-camber adjustment device according to claim 1, characterized in that: The connecting rod is a rotating shaft or a rotating pin.

8. The bottom mold pre-camber adjustment device according to claim 1, characterized in that: The pre-camber adjustment unit is arranged at two ends of the bottom mold body.

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