A mold clamping locking device and mold

Abstract

The present application relates to hydraulic locking device, disclose a kind of mould locking device for mould closing, including upper locking part and lower locking part, upper locking part includes upper rack, first hydraulic motor fixedly connected on upper rack, connecting fixed rod and first transmission part, lower locking part includes lower rack and hydraulic locking structure, and inner thread hole is equipped on lower rack, and hydraulic locking structure includes locking ring, the second hydraulic motor of driving locking ring rotation and the second transmission part connected on second hydraulic motor, first hydraulic motor can drive connecting fixed rod rotation, connecting fixed rod is formed with lower rack and is connected in thread, second hydraulic motor can drive locking ring rotation, to can make locking ring move along connecting fixed rod axial direction. In addition, the present application further discloses a kind of mould.The mould locking device for mould closing of the present application is simple in structure, convenient to operate, and high in safety performance.

Description

Technical Field

[0001] This invention relates to hydraulic locking devices, and more specifically, to a locking device for mold closing. Additionally, this invention also relates to a mold. Background Technology

[0002] In the production of wind turbine blades, fiberglass molds are commonly used. Existing fiberglass molds are fiberglass products made from non-metallic composite materials. During the production of wind turbine blades using these molds, a locking device is needed to lock the two halves of the mold. The clamping force must be uniform when locking the two halves. Furthermore, the locking device must have continuous opening and closing functionality; after rotating the mold 180 degrees, it should be able to achieve a vertical closing movement of 120-160mm to ensure full closure of the parting surfaces of the two halves, and the locking time must be maintained for more than 9 hours. Therefore, the requirements for the locking device are extremely high.

[0003] Existing locking devices generally use hook-claw locking devices, which connect two half-molds using a hook-claw structure. However, existing hook-claw locking devices typically use hydraulic cylinders to drive the hook-claw locking device during the locking process. Because hydraulic power is used, there are situations where the hydraulic pressure is unstable and depressurization occurs during the locking process, resulting in the hook-claw locking device not locking securely and becoming loose. This leads to the loosening of the FRP mold for wind turbine blades, affecting production yield and having low safety performance.

[0004] In view of this, there is a need to provide a locking device for mold closing to solve or overcome the above-mentioned technical problems. Summary of the Invention

[0005] The technical problem to be solved by this invention is to provide a locking device for mold closing. This locking device can realize the mechanical connection between the upper locking part and the lower locking part by using the threaded connection structure between the connecting fixing rod and the lower frame. It has a simple structure, convenient operation, high safety performance and good performance.

[0006] Another technical problem to be solved by the present invention is to provide a mold that has a simple structure, high safety performance, and good performance.

[0007] To solve the above-mentioned technical problems, the technical solution proposed by this invention is as follows:

[0008] A locking device for mold closing includes an upper locking part and a lower locking part. The upper locking part includes an upper frame, a first hydraulic motor fixedly connected to the upper frame, a connecting rod perpendicular to the central axis of the output shaft of the first hydraulic motor, and a first transmission part connected between the first hydraulic motor and the connecting rod. The lower locking part includes a lower frame and a hydraulic locking structure. The lower frame has an internal threaded hole. The hydraulic locking structure includes a locking ring, a second hydraulic motor that drives the locking ring to rotate, and a second transmission part connected to the second hydraulic motor. The first hydraulic motor can drive the connecting rod to rotate, forming a threaded connection between the connecting rod and the lower frame. The second hydraulic motor can drive the locking ring to rotate, so that the locking ring can move axially along the connecting rod.

[0009] Preferably, the upper frame includes an upper frame column and an upper frame horizontal plate connected to the lower end face of the upper frame column. The upper frame horizontal plate is provided with a through hole, and the connecting fixing rod is provided in the upper frame column and passes through the through hole.

[0010] Preferably, the first hydraulic motor is fixedly connected to the upper frame cross plate.

[0011] More preferably, the connecting fixing rod is further provided with a limiting structure to restrict the vertical movement of the connecting fixing rod.

[0012] Preferably, the first transmission unit includes a worm gear connected to the output shaft of the first hydraulic motor and a worm wheel integrally formed or connected to the upper end of the connecting fixed rod. The first hydraulic motor is adapted to drive the worm gear to rotate so as to drive the connecting fixed rod to rotate about its central axis.

[0013] More preferably, the outer circumferential surface of the connecting fixing rod is provided with an external thread structure, which is adapted to the internal thread hole so that the connecting fixing rod and the lower frame can form a threaded connection.

[0014] More preferably, the lower frame includes a lower frame column and a lower frame cross plate connected to the upper end face of the lower frame column, and the second hydraulic motor, the locking ring and the second transmission part are all disposed inside the lower frame column.

[0015] Preferably, the second transmission part includes a second worm gear disposed on the outer peripheral surface of the locking ring and a second worm adapted to the second worm gear, the second worm gear being connected to the output shaft of the second hydraulic motor.

[0016] Preferably, the mold clamping locking device of the present invention further includes a control system and a hydraulic system. The control system is electrically connected to the first hydraulic motor and the second hydraulic motor. The control system is adapted to control the hydraulic system so as to control the rotation of the first hydraulic motor and the second hydraulic motor.

[0017] A mold, comprising a mold closing locking device as described in any one of the above technical solutions.

[0018] Through the above technical solution, the mold clamping locking device of the present invention includes an upper locking part and a lower locking part. The upper locking part includes an upper frame, a first hydraulic motor fixedly connected to the upper frame, a connecting fixing rod perpendicular to the central axis of the output shaft of the first hydraulic motor, and a first transmission part connected between the first hydraulic motor and the connecting fixing rod. The lower locking part includes a lower frame and a hydraulic locking structure. The lower frame is provided with an internal threaded hole. The hydraulic locking structure includes a locking ring, a second hydraulic motor that drives the locking ring to rotate, and a second transmission part connected to the second hydraulic motor. The first hydraulic motor can drive the connecting fixing rod to rotate, forming a threaded connection between the connecting fixing rod and the lower frame. The second hydraulic motor can drive the locking ring to rotate, so that the locking ring can move axially along the connecting fixing rod. In the mold clamping locking device of the present invention, a first hydraulic motor drives the connecting fixing rod to rotate, so that the upper locking part and the lower locking part form a mechanical locking connection, and the second hydraulic motor drives the locking ring to rotate, further locking the connecting fixing rod to prevent the mold from loosening during use. The structure is simple and the performance is good.

[0019] Other advantages of the present invention and the technical effects of preferred embodiments will be further described in the following detailed description. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of one specific embodiment of the locking device for mold closing described in this invention;

[0021] Figure 2 This is a second structural schematic diagram of a specific embodiment of the locking device for mold closing described in this invention.

[0022] Explanation of reference numerals in the attached figures

[0023] 1 Upper rack 101 Upper rack column

[0024] 102 Upper frame horizontal plate 2 First hydraulic motor

[0025] 3 Connecting and fixing rod 4 First transmission part

[0026] 5 Lower frame 501 Lower frame column

[0027] 502 Lower Frame Horizontal Plate 6 Locking Rings

[0028] 7 Second hydraulic motor 8 Second hydraulic motor connector Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this invention can be combined with each other.

[0030] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features.

[0032] like Figure 1 and Figure 2 As shown, the present invention provides a locking device for mold closing, including an upper locking part and a lower locking part. The upper locking part includes an upper frame 1, a first hydraulic motor 2 fixedly connected to the upper frame 1, a connecting fixing rod 3 perpendicular to the central axis of the output shaft of the first hydraulic motor 2, and a first transmission part 4 connected between the first hydraulic motor 2 and the connecting fixing rod 3. The lower locking part includes a lower frame 5 and a hydraulic locking structure. The lower frame 5 is provided with an internal threaded hole 503. The hydraulic locking structure includes a locking ring 6, a second hydraulic motor 7 that drives the locking ring 6 to rotate, and a second transmission part connected to the second hydraulic motor 7. The first hydraulic motor 2 can drive the connecting fixing rod 3 to rotate, forming a threaded connection between the connecting fixing rod 3 and the lower frame 5. The second hydraulic motor 7 can drive the locking ring 6 to rotate, so that the locking ring 6 can move axially along the connecting fixing rod 3.

[0033] In this invention, the upper locking part is fixedly connected to the upper mold of the fiberglass mold, and the lower locking part is fixedly connected to the lower mold of the fiberglass mold. The first hydraulic motor 2 drives the first transmission part 4, thereby causing the connecting fixing rod 3 to rotate. The outer circumferential surface of the connecting fixing rod 3 is provided with a threaded structure, so that the connecting fixing rod 3 can be connected to the lower frame 5 through the rotation of the connecting fixing rod 3. It should be noted that the connecting fixing rod 3 is provided with two axial elastic retaining rings, which are respectively set on the upper and lower surfaces of the upper frame horizontal plate 102. That is, the two axial elastic retaining rings can form an axial limit on the connecting fixing rod 3, and the connecting fixing rod 3 can only rotate circumferentially. During the rotation, the lower locking part moves upward through the threaded connection structure until the lower frame 5 abuts against the upper frame 1, thereby connecting the upper mold and the lower mold of the fiberglass mold through the mold closing locking device of this invention. The upper frame horizontal plate 102 is provided with a through hole, through which the connecting fixing rod 3 passes, but does not form a threaded connection with the upper frame horizontal plate 102. After the connecting rod 3 is rotated into position, there is still a gap between the upper end face of the second hydraulic motor connecting seat 8 and the lower end face of the lower frame horizontal plate 502. At this time, the locking ring 6 can be driven to rotate by the second hydraulic motor 7. The internal thread on the locking ring 6 and the internal thread on the lower frame 5 act simultaneously to form a double-thread locking structure, which can effectively prevent the threaded connection structure between the connecting rod 3 and the lower frame 5 from loosening during use. That is, the internal thread hole 503 on the locking ring 6 and the internal thread on the lower frame horizontal plate 502 are both threadedly connected to the external thread on the connecting rod 3. Furthermore, the internal thread on the locking ring 6 and the internal thread hole 503 on the lower frame horizontal plate 502 form two sets of threads, which can effectively prevent loosening.

[0034] In addition, to ensure that the locking ring 6 moves synchronously with the second hydraulic motor 7, the second hydraulic motor 7 is fixedly mounted on the second hydraulic motor connecting seat 8. The second hydraulic motor connecting seat 8 is provided with a clamping tongue, and the locking ring 6 abuts against the lower end face of the clamping tongue. When the second hydraulic motor 7 drives the locking ring 6 to rotate, the locking ring 6 can move along the axial direction of the connecting fixing rod 3. At the same time, the second hydraulic motor connecting seat 8 can also move up and down under the push of the locking ring 6, thereby achieving the purpose of synchronous movement of the second hydraulic motor 7 and the locking ring 6.

[0035] Furthermore, in this invention, the first hydraulic motor 2 and the second hydraulic motor 7 are driven by a hydraulic system to achieve automatic locking of the upper and lower locking parts. After the upper and lower locking parts are automatically locked, the connecting fixing rod 3 forms a mechanical connection structure with the lower frame 5 through a threaded connection, and is further prevented from loosening by the locking ring 6. This structure can achieve automatic locking of the upper and lower locking parts using a hydraulic system. At the same time, it does not rely on the hydraulic system during subsequent use. When the hydraulic system is unstable or depressurization occurs, it does not affect the connection stability between the upper and lower locking parts. Therefore, there will be no loosening of the mold. The structure is simple, the operation is convenient, and the safety performance is higher.

[0036] It is understood that in the mold closing locking device of the present invention, the upper locking part and the lower locking part can be automatically locked using a hydraulic system. Furthermore, after the upper and lower locking parts are locked, the connection between the upper and lower locking parts is not dependent on the hydraulic system, but rather on the mechanical connection structure formed by the threaded connection between the connecting fixing rod 3 and the lower frame 5. This ensures that the connection between the upper and lower locking parts is not affected when the hydraulic system is unstable or depressurized during use. Further, the double-threaded locking formed by the internal threaded hole 503 on the lower frame cross plate 502 and the locking ring 6 further restricts the rotation of the connecting fixing rod 3 during use, thereby further improving the safety of the mold during use. This safety is completely independent of the hydraulic system. Therefore, the mold closing locking device of the present invention can achieve automatic mold locking using a hydraulic system and can also achieve mold locking independently of a hydraulic system, resulting in a higher safety factor and better performance.

[0037] In a preferred embodiment of the present invention, the upper frame 1 includes an upper frame column 101 and an upper frame horizontal plate 102 connected to the lower end surface of the upper frame column 101. The upper frame horizontal plate 102 is provided with a through hole, and the connecting fixing rod 3 is disposed in the upper frame column 101 and passes through the through hole.

[0038] The upper frame horizontal plate 102 is provided with a circular through hole. The connecting fixing rod 3 can pass through the through hole, but is not connected to the through hole. The connecting fixing rod 3 is restricted in its axial direction displacement by two shafts with elastic retaining rings, but its circumferential direction rotation is not restricted.

[0039] More preferably, the first hydraulic motor 2 is fixedly connected to the upper frame cross plate 102.

[0040] In this invention, the upper frame column 101 and the upper frame horizontal plate 102 are welded together. The first hydraulic motor 2 is fixed to the upper frame horizontal plate 102 with fasteners. The upper frame column 101 is made of rectangular steel pipe. The connecting fixing rod 3 and the first transmission part 4 are both set inside the upper frame column 101.

[0041] In another preferred embodiment of the present invention, the connecting fixing rod 3 is further provided with a limiting structure to restrict the vertical movement of the connecting fixing rod 3.

[0042] In another preferred embodiment of the present invention, the first transmission part 4 includes a worm gear connected to the output shaft of the first hydraulic motor 2 and a worm wheel integrally formed or connected to the upper end of the connecting fixed rod 3. The first hydraulic motor 2 is adapted to drive the worm gear to rotate so as to drive the connecting fixed rod 3 to rotate around its central axis.

[0043] In a preferred embodiment of the present invention, the first transmission part 4 includes a worm gear connected to the output shaft of the first hydraulic motor 2 and a worm wheel connected to the upper end of the connecting fixed rod 3, the worm wheel rotating synchronously with the connecting fixed rod 3.

[0044] As a specific structural form of the present invention, the outer peripheral surface of the connecting fixing rod 3 is provided with an external thread structure, which is adapted to the internal thread hole 503 so that the connecting fixing rod 3 and the lower frame 5 can form a threaded connection.

[0045] In this invention, after the connecting fixing rod 3 is connected to the internal threaded hole 503, the first hydraulic motor 2 is controlled to make the connecting fixing rod 3 rotate circumferentially, and the lower locking part gradually approaches the upper locking part until the upper frame horizontal plate 102 and the lower frame horizontal plate 502 are in contact. At this time, there may be a small gap between the second hydraulic motor connecting seat 8 and the lower frame horizontal plate 502. The second hydraulic motor 7 is controlled to rotate the locking ring 6 until the second hydraulic motor connecting seat 8 and the lower frame horizontal plate 502 are in contact. There is no gap between the upper frame horizontal plate 102, the second hydraulic motor connecting seat 8 and the lower frame horizontal plate 502, and a mechanical threaded connection structure is formed. In the process of use, the double thread locking (i.e., the internal thread on the lower frame horizontal plate 502 and the internal thread of the locking ring 6) makes the connection between the upper locking part and the lower locking part more secure, further increasing the safety of use.

[0046] As another specific structural form of the present invention, the lower frame 5 includes a lower frame column 501 and a lower frame cross plate 502 connected to the upper end face of the lower frame column 501. The second hydraulic motor 7, the locking ring 6 and the second transmission part are all disposed in the lower frame column 501.

[0047] As another specific structural form of the present invention, the second transmission part includes a second worm wheel disposed on the outer peripheral surface of the locking ring 6 and a second worm adapted to the second worm wheel, the second worm wheel being connected to the output shaft of the second hydraulic motor 7.

[0048] In this invention, the second worm gear is preferably made of tin bronze and is connected to the outer circumferential surface of the locking ring 6. The second worm is connected to the output shaft of the second hydraulic motor 7 and is adapted to the second worm gear. By rotating the second worm, the locking ring 6 is driven to rotate. Thus, after the first hydraulic motor 2 stops rotating, the locking ring 6 can be rotated by the second hydraulic motor 7 to form a double threaded lock. This ensures that the threaded connection structure between the connecting fixing rod 3 and the lower frame horizontal plate 502 will not loosen during the use of the mold, effectively improving the safety performance.

[0049] Typically, it also includes a control system and a hydraulic system, the control system being electrically connected to the first hydraulic motor 2 and the second hydraulic motor 7, the control system being adapted to control the hydraulic system to control the rotation of the first hydraulic motor 2 and the second hydraulic motor 7.

[0050] This invention can effectively solve the following two important problems:

[0051] First, the mold clamping locking device of the present invention includes an upper locking part and a lower locking part. The upper locking part includes a first hydraulic motor 2, a connecting fixing rod 3 and a first transmission part 4. The first hydraulic motor 2 can drive the connecting fixing rod 3 to rotate through the first transmission part 4, thereby forming a threaded connection structure between the connecting fixing rod 3 and the lower frame 5. Furthermore, the connection stability of the threaded connection structure is not affected when the hydraulic system is unstable or depressurized, and the connection safety is higher.

[0052] Secondly, the lower locking part of the present invention also includes a locking ring 6, a second hydraulic motor 7, and a second transmission part connected between the second hydraulic motor 7 and the locking ring 6. The second hydraulic motor 7 drives the locking ring 6 to rotate, thereby forming a double thread lock with the internal thread of the lower frame horizontal plate 502, further ensuring that the mold will not loosen during use. Similarly, the second hydraulic motor 7 can also ensure that the connection stability of the threaded connection structure will not be affected when the hydraulic system is unstable or depressurized.

[0053] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0054] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0055] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A locking device for mold closing, characterized in that, The device includes an upper locking part and a lower locking part. The upper locking part includes an upper frame (1), a first hydraulic motor (2) fixedly connected to the upper frame (1), a connecting fixing rod (3) perpendicular to the output shaft center axis of the first hydraulic motor (2), and a first transmission part (4) connecting the first hydraulic motor (2) and the connecting fixing rod (3). The lower locking part includes a lower frame (5) and a hydraulic locking structure. The lower frame (5) is provided with an internal threaded hole (503). The hydraulic locking structure includes a locking ring (6) and a second hydraulic motor (7) that drives the locking ring (6) to rotate. The first hydraulic motor (2) is capable of driving the connecting fixing rod (3) to rotate, forming a threaded connection between the connecting fixing rod (3) and the lower frame (5). The second hydraulic motor (7) is capable of driving the locking ring (6) to rotate, so that the locking ring (6) can move axially along the connecting fixing rod (3). The threaded connection between the connecting fixing rod (3) and the lower frame (5) and the threaded connection between the locking ring (6) and the connecting fixing rod (3) work simultaneously to form a double threaded locking structure.

2. The locking device for mold closing according to claim 1, characterized in that, The upper frame (1) includes an upper frame column (101) and an upper frame horizontal plate (102) connected to the lower end face of the upper frame column (101). The upper frame horizontal plate (102) is provided with a through hole, and the connecting fixing rod (3) is provided in the upper frame column (101) and passes through the through hole.

3. The locking device for mold closing according to claim 2, characterized in that, The first hydraulic motor (2) is fixedly connected to the upper frame cross plate (102).

4. The locking device for mold closing according to claim 2, characterized in that, The connecting fixing rod (3) is also provided with a limiting structure to restrict the vertical movement of the connecting fixing rod (3).

5. The locking device for mold closing according to claim 1, characterized in that, The first transmission unit (4) includes a first worm gear connected to the output shaft of the first hydraulic motor (2) and a first worm wheel integrally formed or connected to the upper end of the connecting fixed rod (3). The first hydraulic motor (2) is adapted to drive the first worm gear to rotate so as to drive the connecting fixed rod (3) to rotate about its central axis.

6. The locking device for mold closing according to claim 5, characterized in that, The outer circumferential surface of the connecting fixing rod (3) is provided with an external thread structure, which is adapted to the internal thread hole (503) so that the connecting fixing rod (3) and the lower frame (5) can form a threaded connection.

7. The locking device for mold closing according to any one of claims 1 to 6, characterized in that, The lower frame (5) includes a lower frame column (501) and a lower frame cross plate (502) connected to the upper end face of the lower frame column (501). The second hydraulic motor (7), the locking ring (6) and the second transmission part are all disposed inside the lower frame column (501).

8. The locking device for mold closing according to any one of claims 1 to 6, characterized in that, The second transmission unit includes a second worm wheel disposed on the outer circumferential surface of the locking ring (6) and a second worm adapted to the second worm wheel, the second worm wheel being connected to the output shaft of the second hydraulic motor (7).

9. The locking device for mold closing according to any one of claims 1 to 6, characterized in that, It also includes a control system and a hydraulic system, the control system being electrically connected to the first hydraulic motor (2) and the second hydraulic motor (7), the control system being adapted to control the hydraulic system so as to control the rotation of the first hydraulic motor (2) and the second hydraulic motor (7).

10. A mold, characterized in that, Includes a locking device for mold closing according to any one of claims 1 to 9.

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