A single swing arm electric mold locking mechanism

Abstract

The utility model discloses a single pendulum arm electric locking die mechanism, including frame, fixed mould, movable mould and drive assembly, the frame is equipped with slide rail, the fixed mould and movable mould correspondingly set up on the slide rail, the drive assembly includes motor, reduction gearbox, pendulum arm and lock linkage, the motor passes through reduction gearbox transmission connection pendulum arm's middle axle, the free end of pendulum arm articulates drive end of lock linkage, the driven end of lock linkage articulates movable mould, the rotation angle range of pendulum arm is limited within 180 DEG, through motor drive reduction gearbox does positive and negative rotation action, so that drive assembly can drive movable mould moves along slide rail before and after, to complete the action of opening mould and locking die. The utility model replaces the operation of existing air cylinder or oil cylinder, utilizes the cooperation of pendulum arm and lock linkage assembly, and the rotation action of motor is converted into the linear motion of movable mould, and the moment is more stable.

Description

Technical Field

[0001] This utility model relates to the field of blow molding machine technology, specifically to a single-swing arm electric mold locking mechanism. Background Technology

[0002] Blow molding machines are commonly used to produce various hollow plastic products. Thermoplastic resin is first made into a tubular preform, which is then placed in a split blow molding mold and the mold is closed. Air is then blown into the preform, causing it to inflate and adhere tightly to the inner wall of the mold cavity. After cooling, the hollow plastic product is obtained.

[0003] Existing blow molding machine clamping mechanisms generally use pneumatic or hydraulic methods to push the clamping mold to move horizontally on the mold transfer frame. The disadvantages are that the action has large impact and instability, thus affecting the quality of the blow-molded products. Furthermore, the pneumatic or hydraulic actuators are subject to high loads and are prone to damage, there is a risk of hydraulic oil leakage, and maintenance and repair are inconvenient. Utility Model Content

[0004] To address the technical problems existing in the prior art, the purpose of this utility model is to provide a single-arm electric locking mechanism that has stable torque and is easy to maintain.

[0005] The objective of this utility model is achieved through the following technical solution: a single-swing arm electric mold locking mechanism, comprising a frame, a fixed mold, a moving mold, and a drive assembly. The frame is provided with a slide rail, and the fixed mold and the moving mold are correspondingly arranged on the slide rail. The drive assembly includes a motor, a reduction gearbox, a swing arm, and a locking linkage. The motor is connected to the central shaft of the swing arm through the reduction gearbox. The suspended end of the swing arm is hinged to the driving end of the locking linkage, and the driven end of the locking linkage is hinged to the moving mold. The rotation angle range of the swing arm is limited to within 180°. The motor drives the reduction gearbox to perform forward and reverse rotation, enabling the drive assembly to drive the moving mold to move back and forth along the slide rail to complete the mold opening and locking actions.

[0006] Furthermore, the locking link has an adjustable length.

[0007] Specifically, the locking link includes an independent driving end, a driven end, and a connecting shaft, with the driving end and the driven end connected by the connecting shaft; wherein, the connecting shaft is adjustable for the engagement degree with the driving end, and / or, the connecting shaft is adjustable for the engagement degree with the driven end, and / or, the connecting shaft is detachable so that connecting shafts of different lengths can be replaced, making the overall length of the locking link adjustable.

[0008] Specifically, the swing arm includes a left arm plate, a right arm plate, and a middle baffle. The left and right arm plates are mirror images of each other. The middle baffle is located between the left and right arm plates and is connected to the periphery of the center portion of the left and right arm plates. The left and right arm plates also have corresponding protruding parts to form the suspended end of the swing arm. The protruding parts of the left and right arm plates are respectively clamped on both sides of the driving end of the locking link and are hinged to the locking link through a first hinge shaft, so that the swing arm can drive the locking link to swing. When the swing arm rotates upward until the locking link abuts against the middle baffle, the swing arm and the locking link fold. When the swing arm rotates in the opposite direction, the locking link leaves the middle baffle, and the swing arm drives the locking link to unfold.

[0009] Furthermore, the drive assembly also includes a locking plate, which includes a front arc-shaped arm, a connecting part, and a rear arc-shaped arm. The front arc-shaped arm and the rear arc-shaped arm are respectively connected to the two ends of the connecting part to form a C-shaped profile. The front arc-shaped arm is hinged to the swing arm, and the rear arc-shaped arm is hinged to the fixed mold. The fixed mold and the moving mold are disposed within the space enclosed by the front arc-shaped arm, the connecting part, and the rear arc-shaped arm.

[0010] Specifically, the front arc-shaped arm bends outward, so that the front arc-shaped arm and the connecting part are connected at an obtuse angle; the rear arc-shaped arm bends inward, so that the rear arc-shaped arm and the connecting part are connected at an acute angle.

[0011] Furthermore, a wok ear plate is provided above the front arc-shaped arm. The wok ear plate includes a left ear plate and a right ear plate. The upper part of the left ear plate and the right ear plate are respectively provided with a circular shaft hole. Correspondingly, the outer sides of the left arm plate and the right arm plate of the swing arm are respectively provided with circular flanges to form the central axis of the swing arm. The upper parts of the left ear plate and the right ear plate are clamped on both sides of the swing arm. The circular flanges are connected through the circular shaft holes via bearings to realize the hinge connection between the wok ear plate and the swing arm. The lower parts of the left ear plate and the right ear plate are clamped on both sides of the front arc-shaped arm. The left ear plate and the right ear plate are connected to a locking plate to realize the fixed connection between the wok ear plate and the locking plate.

[0012] Specifically, the bottom of the fixed mold is provided with a first sliding seat, and the bottom of the first sliding seat is provided with a slider. The slider is matched and connected to the slide rail, so that the fixed mold is mounted on the slide rail; the bottom of the moving mold is provided with a second sliding seat, and the bottom of the second sliding seat is also provided with a slider. The slider is matched and connected to the slide rail, so that the moving mold is mounted on the slide rail, and the moving mold can slide along the slide rail.

[0013] Furthermore, it also includes a synchronization component, which includes a drive gear, a fixed rack, and a movable rack. The fixed rack and the movable rack extend along the sliding direction of the slide rail. The drive gear meshes with the fixed rack and the movable rack respectively. Under the drive of the drive gear, the extension ends of the fixed rack and the movable rack move closer to each other or further away. The extension end of the fixed rack is connected to the front arc-shaped arm of the locking plate, and the extension end of the movable rack is connected to the second sliding seat, thereby drivingly connecting the moving mold.

[0014] Specifically, the locking plate is also provided with a third sliding seat, and the bottom of the third sliding seat is provided with a slider. The slider is matched and connected to the slide rail. The locking plate is suspended on the frame through the first sliding seat and the third sliding seat.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] 1. This utility model replaces the existing cylinder or hydraulic cylinder operation. By using the cooperation of the swing arm and locking linkage assembly, the rotational motion of the motor is converted into the linear motion of the moving mold, resulting in more stable torque.

[0017] 2. This utility model utilizes the different torques achieved by the different rotation angles of the locking link. When the swing arm and locking link assembly swing down and approach a straight line, the torque multiplier of the forward linear thrust generated will be amplified. By utilizing the principle of force conversion and torque enhancement generated by the swing arm and locking link, the purpose of stabilizing the torque before mold locking and providing sufficient mold locking force at the moment of mold locking is achieved.

[0018] 3. The locking linkage of this utility model has an adjustable length, which can be adapted to the processing of products of different specifications and simplifies the debugging of machinery and equipment.

[0019] 4. The shape and angle of the two arc-shaped arms of the C-shaped locking plate of this utility model have been improved through mechanical design. The connecting drive component side of the locking plate expands outward, that is, it bends outward, so that the stress point opens outward. On the other hand, the mounting mold side of the locking plate bends inward. This design utilizes the deformation force generated by bending to provide greater force for the locking mold, and the inward bending structure can also form a clearance design with the template. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this embodiment, and it is in the mold-locked state.

[0021] Figure 2 This is an exploded view of this embodiment.

[0022] Figure 3 This is a schematic diagram of the swing arm.

[0023] Figure 4 This is a schematic diagram of the locking linkage.

[0024] Figure 5 This is a schematic diagram of the locking plate.

[0025] Figure 6 This is a structural diagram after the base, motor, and gearbox have been removed.

[0026] Figure 7 This is another perspective view of this embodiment, showing the mold-open state.

[0027] In the picture:

[0028] 10-Rack, 13-Base, 15-Slide rail;

[0029] 20 - Fixed mold, 27 - First sliding seat;

[0030] 30 - Moving mold, 37 - Second sliding seat;

[0031] 40-Drive assembly, 41-Motor, 42-Reduction gearbox, 43-Swing arm, 431-Left arm plate, 435-Right arm plate, 437-Middle baffle, 438-Flange, 44-Locking link, 441-Drive end, 443-Driven end, 445-Connecting shaft, 45-Locking plate, 452-Front arc arm, 456-Connecting part, 458-Rear arc arm, 46-Wok ear plate, 461-Left ear plate, 463-Right ear plate, 467-Shaft hole, 469-Bearing, 47-Third sliding seat, 481-First hinge shaft, 482-Second hinge shaft, 483-Third hinge shaft, 484-Connecting component;

[0032] 50 - Synchronization component, 52 - Drive gear, 54 - Fixed rack, 540 - First connector, 56 - Moving rack, 560 - Second connector;

[0033] 70 - Slider. Detailed Implementation

[0034] To facilitate understanding of this utility model, the technical solutions and advantages of the utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Any mechanisms or methods not elaborated in this utility model can be referred to in the prior art. The specific structures and features of this utility model are illustrated below by way of example and should not constitute any limitation on this utility model. Furthermore, any technical feature mentioned below (including implicit or disclosed features), as well as any technical feature directly shown or implied in the figures, can be arbitrarily combined or deleted among these technical features to form more other embodiments that may not be directly or indirectly mentioned in this utility model. The accompanying drawings show preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0035] like Figure 1-7 As shown, the single-swing arm electric mold locking mechanism of this embodiment includes a frame 10, a fixed mold 20, a moving mold 30, a drive assembly 40, and a synchronization assembly 50. The fixed mold 20, the moving mold 30, the drive assembly 40, and the synchronization assembly 50 are arranged on the frame 10. The fixed mold 20 and the moving mold 30 are arranged correspondingly. The drive assembly 40 and the synchronization assembly 50 are connected to the moving mold 30 and synchronously drive the moving mold 30 to move toward the fixed mold 20.

[0036] The frame 10 includes a base 13 and a slide rail 15, which is mounted on the base 13. The slide rail 15 includes two parallel slide bars.

[0037] The fixed mold 20 and the moving mold 30 are respectively arranged on the frame 10. Specifically, the bottom of the fixed mold 20 is provided with a first sliding seat 27, and the bottom of the first sliding seat 27 is provided with a slider 70. The slider 70 is matched and connected to the slide rail 15, so that the fixed mold 20 is mounted on the slide rail 15. The bottom of the moving mold 30 is provided with a second sliding seat 37, and the bottom of the second sliding seat 37 is also provided with a slider 70. The slider 70 is matched and connected to the slide rail 15, so that the moving mold 30 is mounted on the slide rail 15 and can slide along the slide rail 15.

[0038] The drive assembly 40 includes a motor 41, a reduction gearbox 42, a swing arm 43, a locking link 44, a locking plate 45, and several hinge shafts. The motor 41 is connected to the central shaft of the swing arm 43 via the reduction gearbox 42, enabling the swing arm 43 to rotate around its central shaft. The suspended end of the swing arm 43 is connected to one end of the locking link 44 via a first hinge shaft 481, which is the driving end 441 of the locking link. The other end of the locking link 44 is the driven end 443, which is connected to the moving mold 30 via a second hinge shaft 482, causing the moving mold 30 to move back and forth along the slide rail 15.

[0039] In this preferred embodiment, the rotation angle range of the swing arm 43 is limited to within 180°. The swing arm 43 includes a left arm plate 431, a right arm plate 435, and a middle baffle 437. The left arm plate 431 and the right arm plate 435 are mirror images of each other. The middle baffle 437 is disposed between the left arm plate 431 and the right arm plate 435, and is connected to the periphery of the center portion of the left arm plate 431 and the right arm plate 435. The left arm plate 431 and the right arm plate 435 are also provided with corresponding protruding parts to form the suspended end of the swing arm 43. The protruding parts of the left arm plate 431 and the right arm plate 435 are respectively clamped on both sides of the driving end 441 of the locking link 44, and are hinged to the locking link 44 through the first hinge shaft 481, so that the swing arm 43 can drive the locking link 44 to swing. When the swing arm 43 rotates upward until the locking link 44 abuts against the middle baffle 437, the swing arm 43 and the locking link 44 fold together, at which point the overall length of the swing arm 43 and the locking link 44 is at its minimum. When the swing arm 43 rotates in the opposite direction, the locking link 44 moves away from the middle baffle 437, and the swing arm 43 causes the locking link 44 to unfold, increasing the overall length of the swing arm 43 and the locking link 44. The locking torque achieved by different rotation angles of the locking link 44 varies. When the connection between the swing arm 43 and the locking link 44 is nearly straight, the torque multiplier of the forward linear thrust generated will be amplified.

[0040] In this preferred embodiment, the locking link 44 has an adjustable length structure. The locking link 44 includes an independent drive end 441, a driven end 443, and a connecting shaft 445. The drive end 441 and the driven end 443 are connected by the connecting shaft 445. The connecting shaft 445 can adjust the engagement degree with the drive end 441, and / or the connecting shaft 445 can adjust the engagement degree with the driven end 443, and / or the connecting shaft 445 is detachable so that connecting shafts 445 of different lengths can be replaced. This allows the overall length of the locking link 44 to be adjusted, which is convenient for meeting the mold-locking requirements of different product specifications, thereby avoiding the need to adjust large components of the mold-locking mechanism and improving efficiency.

[0041] The locking plate 45 is a one-piece molded C-shaped plate, comprising a front arc-shaped arm 452, a connecting portion 456, and a rear arc-shaped arm 458. The front arc-shaped arm 452 and the rear arc-shaped arm 458 are respectively connected to the two ends of the connecting portion 456 to form a C-shaped outline. The front arc-shaped arm 452 is bent outward, so that the front arc-shaped arm 452 and the connecting portion 456 are connected at an obtuse angle; the rear arc-shaped arm 458 is bent inward, so that the rear arc-shaped arm 458 and the connecting portion 456 are connected at an acute angle. The locking plate 45 is mounted on the base 13, and the connecting portion 456 of the locking plate 45 is correspondingly positioned between the two slide bars of the slide rail 15. A wok ear plate 46 is provided above the front arc arm 452. The front arc arm 452 is hinged to the swing arm 43 through the wok ear plate 46. The rear arc arm 458 is hinged to the fixed mold 20 through the third hinge shaft 483. The fixed mold 20 and the moving mold 30 are arranged in the space enclosed by the front arc arm 452, the connecting part 456 and the rear arc arm 458.

[0042] Specifically, the wok ear plate 46 includes a left ear plate 461 and a right ear plate 463. Each of the left and right ear plates 461 and 463 has a corresponding circular shaft hole 467 on its upper part. Correspondingly, the outer sides of the left arm plate 431 and right arm plate 435 of the swing arm 43 are respectively provided with circular flanges 438 to form the central shaft of the swing arm 43. The upper parts of the left ear plate 461 and right ear plate 463 are sandwiched between the two sides of the swing arm 43. The circular shaft hole 467 of the left ear plate 461 is connected to the circular flange 438 of the left arm plate 431 via a bearing 469, and the circular shaft hole 467 of the right ear plate 463 is connected to the circular flange 438 of the right arm plate 435 via a bearing 469, thereby achieving the hinge connection between the wok ear plate 46 and the swing arm 43. The gearbox 42 is connected to the swing arm 43 via a circular shaft hole 467 passing through one of the ear plates. The lower parts of the left ear plate 461 and the right ear plate 463 are clamped on both sides of the front arc-shaped arm 452 of the locking plate 45, and the left ear plate 461 and the right ear plate 463 are connected to the locking plate 45 by the connecting component 484 such as screws, so as to achieve a fixed connection between the locking plate 45 and the wok ear plate 46.

[0043] The locking plate 45 is also provided with a third sliding seat 47, located on both sides of the front arc arm 452. The bottom of the third sliding seat 47 is provided with a slider 70, which is matched and connected to the slide rail 15. The locking plate 45 is suspended on the base 13 through the first sliding seat 27 and the third sliding seat 47.

[0044] The synchronization component 50 is located below the drive component 40. The synchronization component 50 includes a drive gear 52, a fixed rack 54, and a movable rack 56. The fixed rack 54 and the movable rack 56 extend along the sliding direction of the slide rail 15. The drive gear 52 meshes with and drives the fixed rack 54 and the movable rack 56 respectively. Driven by the drive gear 52, the extension ends of the fixed rack 54 and the movable rack 56 move closer to or further away from each other. The extension end of the fixed rack 54 is connected to the front arc-shaped arm 452 of the locking plate 45 via a first connector 540, and the extension end of the movable rack 56 is connected to the second sliding seat 37 via a second connector 560, thereby driving the moving mold 30. The drive gear 52 moves synchronously with the motor 41, achieving opposite synchronous movement to adjust the action.

[0045] In this embodiment, the motor 41 drives the reduction gearbox 42 to perform forward and reverse rotation. When rotating forward, it drives the swing arm 43 and the locking link 44 to fold up, thereby completing the mold opening operation. When rotating in reverse, it drives the swing arm 43 and the locking link 44 to unfold, thereby completing the mold locking operation.

[0046] Compared with existing technologies, the single-swing arm electric mold-locking mechanism of this embodiment replaces the operation of existing pneumatic or hydraulic cylinders. By utilizing the cooperation of the swing arm and locking linkage assembly, the rotational motion of the motor is converted into the linear motion of the moving mold, resulting in more stable torque. Furthermore, the torque achieved by different rotation angles of the locking linkage varies. When the swing arm and locking linkage assembly swing down to near straightness, the torque multiplier of the forward linear thrust generated is amplified. By utilizing the principle of force conversion and torque enhancement generated by the swing arm and locking linkage, the torque is stabilized before mold locking, and sufficient clamping force is provided at the moment of mold locking.

[0047] The above embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of protection of the present utility model. For those skilled in the art, it will be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A single-swing arm electric mold-locking mechanism, characterized in that, The device includes a frame, a fixed mold, a moving mold, and a drive assembly. The frame is equipped with a slide rail, and the fixed mold and the moving mold are correspondingly mounted on the slide rail. The drive assembly includes a motor, a gearbox, a swing arm, and a locking link. The motor is connected to the central shaft of the swing arm via the gearbox. The suspended end of the swing arm is hinged to the driving end of the locking link, and the driven end of the locking link is hinged to the moving mold. The rotation angle of the swing arm is limited to within 180°. The motor drives the gearbox to perform forward and reverse rotation, enabling the drive assembly to move the moving mold back and forth along the slide rail to complete the mold opening and locking actions.

2. The single-swing arm electric mold-locking mechanism as described in claim 1, characterized in that, The locking link has an adjustable length.

3. The single-swing arm electric mold-locking mechanism as described in claim 2, characterized in that, The locking link includes an independent driving end, a driven end, and a connecting shaft, with the driving end and the driven end connected by the connecting shaft; wherein, the connecting shaft is adjustable for the engagement degree with the driving end, and / or, the connecting shaft is adjustable for the engagement degree with the driven end, and / or, the connecting shaft is detachable so that connecting shafts of different lengths can be replaced, making the overall length of the locking link adjustable.

4. The single-swing arm electric mold-locking mechanism as described in claim 1, characterized in that, The swing arm includes a left arm plate, a right arm plate, and a middle baffle. The left and right arm plates are mirror images of each other. The middle baffle is located between the left and right arm plates and connects to the periphery of the center portion of the left and right arm plates. The left and right arm plates also have corresponding protruding parts to form the suspended end of the swing arm. The protruding parts of the left and right arm plates are respectively clamped on both sides of the driving end of the locking link and are hinged to the locking link through a first hinge shaft, so that the swing arm can drive the locking link to swing. When the swing arm rotates upward until the locking link abuts against the middle baffle, the swing arm and the locking link fold. When the swing arm rotates in the opposite direction, the locking link leaves the middle baffle, and the swing arm drives the locking link to unfold.

5. The single-swing arm electric mold-locking mechanism as described in claim 4, characterized in that, The drive assembly also includes a locking plate, which includes a front arc arm, a connecting part, and a rear arc arm. The front arc arm and the rear arc arm are respectively connected to the two ends of the connecting part to form a C-shaped profile. The front arc arm is hinged to the swing arm, and the rear arc arm is hinged to the fixed mold. The fixed mold and the moving mold are arranged within the space enclosed by the front arc arm, the connecting part, and the rear arc arm.

6. The single-swing arm electric mold-locking mechanism as described in claim 5, characterized in that, The front arc-shaped arm bends outward, so that the front arc-shaped arm and the connecting part are connected at an obtuse angle; the rear arc-shaped arm bends inward, so that the rear arc-shaped arm and the connecting part are connected at an acute angle.

7. The single-swing arm electric mold-locking mechanism as described in claim 5, characterized in that, A wok lug plate is provided above the front arc-shaped arm. The wok lug plate includes a left lug plate and a right lug plate. The upper part of the left lug plate and the right lug plate are respectively provided with a circular shaft hole. Correspondingly, the outer sides of the left arm plate and the right arm plate of the swing arm are respectively provided with circular flanges to form the central axis of the swing arm. The upper parts of the left lug plate and the right lug plate are clamped on both sides of the swing arm. The circular flanges are connected through the circular shaft holes by bearings to realize the hinge connection between the wok lug plate and the swing arm. The lower parts of the left lug plate and the right lug plate are clamped on both sides of the front arc-shaped arm. The left lug plate and the right lug plate are connected to a locking plate to realize the fixed connection between the wok lug plate and the locking plate.

8. The single-swing arm electric mold-locking mechanism as described in claim 5, characterized in that, The fixed mold has a first sliding seat at its bottom, and a slider at its bottom. The slider is matched and connected to the slide rail, so that the fixed mold is mounted on the slide rail. The moving mold has a second sliding seat at its bottom, and a slider at its bottom. The slider is matched and connected to the slide rail, so that the moving mold is mounted on the slide rail and can slide along the slide rail.

9. The single-swing arm electric mold-locking mechanism as described in claim 8, characterized in that, It also includes a synchronization component, which comprises a drive gear, a fixed rack, and a movable rack. The fixed rack and the movable rack extend along the sliding direction of the slide rail. The drive gear meshes with the fixed rack and the movable rack respectively. Under the drive of the drive gear, the extension ends of the fixed rack and the movable rack move closer to each other or further away. The extension end of the fixed rack is connected to the front arc-shaped arm of the locking plate, and the extension end of the movable rack is connected to the second sliding seat, thereby drivingly connecting the moving mold.

10. The single-swing arm electric mold-locking mechanism as described in claim 8, characterized in that, The locking plate is also provided with a third sliding seat, and the bottom of the third sliding seat is provided with a slider. The slider is matched and connected to the slide rail. The locking plate is suspended on the frame through the first sliding seat and the third sliding seat.

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