A locking mechanism is provided, which is driven by a connecting rod to rotate and pull a rod to synchronize the up and down

Abstract

The application discloses a lock mechanism which is driven by a connecting rod to rotate and drive a pull rod to move synchronously, comprising a swing frame base, a first lock plate, a second lock plate and a mold opening and closing assembly; the mold opening and closing assembly comprises a lock pull rod, a driving main shaft, a lock connecting rod, a gear and rack component, a lifting component and a lifting support; one end of the lock connecting rod is connected with the driving main shaft, and the other end of the lock connecting rod is hingedly connected with one end of the lock pull rod; the lifting component is arranged on the second lock plate; the gear and rack component comprises a fixed rack and a movable gear which are meshed with each other; the movable gear is rotationally connected to the second lock plate; the movable gear is connected with an input end of the lifting component; and the lifting support is connected with a lifting end of the lifting component. The rotation of the driving main shaft drives the swing of the lock connecting rod, thereby sequentially driving the lock pull rod, the gear and rack component, the lifting component and the lifting support to move, so that the first lock plate and the second lock plate are rapidly opened and closed, and the energy consumption of the lock mechanism for opening and closing the mold is reduced.

Description

Technical Field

[0001] This invention relates to the field of mold-locking device technology, and in particular to a mold-locking mechanism that uses the rotation of a connecting rod to drive a pull rod to move up and down synchronously. Background Technology

[0002] The mold closing and locking device is a crucial component of extrusion blow molding machines, primarily used for opening and closing the mold and high-pressure mold locking. Currently, common mold closing and locking devices on the market typically employ two separate power sources to perform the mold opening / closing and locking actions. The mold closing action is achieved by pushing one locking platen towards the other. To meet the demands of high mold opening and closing speeds, existing locking devices often use more powerful power sources, leading to increased energy consumption during production. Summary of the Invention

[0003] The purpose of this invention is to propose a mold-locking mechanism that uses the rotation of a connecting rod to drive the pull rod to move up and down synchronously.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] A locking mechanism that uses the rotation of a connecting rod to drive a pull rod to move up and down synchronously includes a swing frame base, a first locking template, a second locking template, and an opening and closing mold assembly; the first locking template and the second locking template are slidably disposed on the swing frame base;

[0006] The mold opening and closing assembly includes a mold locking rod, a drive spindle, a mold locking connecting rod, a gear and rack assembly, a lifting assembly, and a lifting bracket; the drive spindle is mounted on the first mold locking plate, one end of the mold locking connecting rod is connected to the drive spindle, and the other end of the mold locking connecting rod is hinged to one end of the mold locking rod;

[0007] The lifting component is mounted on the second locking template. The gear and rack component includes a fixed rack and a movable gear that mesh with each other. The fixed rack is arranged parallel to the swing frame base. The movable gear is rotatably connected to the second locking template. The movable gear is connected to the input end of the lifting component. The lifting bracket is connected to the lifting end of the lifting component.

[0008] When the mold is closed, the drive spindle drives the mold locking link to swing upward away from the second mold locking plate, and the mold locking pull rod pulls the second mold locking plate towards the center. The movement of the second mold locking plate simultaneously drives the movable gear and the fixed rack to move relative to each other, so that the other end of the mold locking pull rod moves upward synchronously.

[0009] When the mold is opened, the drive spindle drives the mold locking rod to swing downwards towards the second mold locking plate. The mold locking pull rod pushes the second mold locking plate to move outwards. The movement of the second mold locking plate simultaneously drives the movable gear and the fixed rack to move relative to each other, causing the other end of the mold locking pull rod to move downwards synchronously.

[0010] Preferably, the gear and rack component further includes a template servo motor, which is mounted on the second locking template, and the shaft end of the template servo motor is connected to the movable gear.

[0011] Preferably, the lifting component includes a first lifting pulley, a second lifting pulley, and a synchronous belt. The first lifting pulley and the second lifting pulley are arranged vertically on one side of the second locking template. The synchronous belt meshes with the first lifting pulley and the second lifting pulley. The second lifting pulley is coaxially connected to the movable gear. The synchronous belt is connected to the lifting bracket.

[0012] Preferably, the length of the locking rod is adjustable.

[0013] Preferably, it also includes an electronic ruler, which is mounted on the base of the swing frame, and the detection end of the electronic ruler is connected to the first lock template.

[0014] Preferably, the first locking template is provided with an upper limit pin, which is located on the movement trajectory of the locking template connecting rod.

[0015] Preferably, it also includes a synchronous motion component, which is used to make the first locking template and the second locking template move synchronously towards or in opposite directions on the swing frame base.

[0016] Preferably, the synchronous motion component includes a first synchronous rack, a second synchronous rack, and a synchronous gear. The first synchronous rack and the second synchronous rack are parallel and respectively disposed on the first locking template and the second locking template. The synchronous gear is disposed in the middle of the swing frame base, and both the first synchronous rack and the second synchronous rack mesh with the synchronous gear.

[0017] Preferably, it also includes a servo drive motor and a gearbox, the gearbox being mounted on the first locking template, the shaft end of the servo drive motor being connected to the input end of the gearbox, and the output end of the gearbox being connected to the drive spindle.

[0018] The beneficial effects of this invention are as follows: By driving the rotation of the main shaft, the locking mold connecting rod swings, thereby sequentially driving the movement of the locking mold tie rod, gear and rack assembly, lifting assembly, and lifting bracket, achieving rapid opening and closing of the first and second locking mold plates, and reducing the energy consumption of the locking mold mechanism. The locking mold tie rod is connected to both the first and second locking mold plates. When the mold is fully open, the locking mold tie rod is in its lowest position, facilitating mold replacement. Attached Figure Description

[0019] The accompanying drawings further illustrate the present invention, but the content of the drawings does not constitute any limitation on the present invention.

[0020] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of a lifting component according to one embodiment of the present invention.

[0022] The components include: a swing frame base 1, a first locking template 2, a second locking template 3, a drive spindle 21, a locking mold connecting rod 43, a locking mold pull rod 51, a limit pin 5, a gear and rack assembly 31, a lifting assembly 32, a lifting bracket 33, a first lifting pulley 321, a synchronous belt 322, an electronic ruler 7, a synchronous motion component 8, a servo drive motor 22, and a reduction gearbox 23. Detailed Implementation

[0023] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] This embodiment describes a mold-locking mechanism that utilizes the rotation of a connecting rod to drive a pull rod to move up and down synchronously. (See attached diagram.) Figure 1 and 2 It includes a swing frame base 1, a first locking template 2, a second locking template 3, and an opening and closing mold assembly; the first locking template 2 and the second locking template 3 are slidably arranged on the swing frame base 1;

[0025] The mold opening and closing assembly includes a mold locking rod 51, a drive spindle 21, a mold locking connecting rod 43, a gear and rack component 31, a lifting component 32, and a lifting bracket 33; the drive spindle 21 is mounted on the first mold locking plate 2, one end of the mold locking connecting rod 43 is connected to the drive spindle 21, and the other end of the mold locking connecting rod 43 is hinged to one end of the mold locking rod 51.

[0026] The lifting component 32 is mounted on the second locking template 3. The gear and rack component 31 includes a fixed rack and a movable gear that mesh with each other. The fixed rack is arranged parallel to the swing frame base 1. The movable gear is rotatably connected to the second locking template 3. The movable gear is connected to the input end of the lifting component 32. The lifting bracket 33 is connected to the lifting end of the lifting component 32.

[0027] When the mold is closed, the drive spindle 21 drives the mold locking rod 43 to swing upward in a direction away from the second mold locking plate 3, and the mold locking pull rod 51 pulls the second mold locking plate 3 to move towards the center. The movement of the second mold locking plate 3 simultaneously drives the movable gear and the fixed rack to move relative to each other, so that the other end of the mold locking pull rod 51 moves upward synchronously.

[0028] When the mold is opened, the drive spindle 21 drives the mold locking rod 43 to swing downward towards the second mold locking plate 3. The mold locking rod 51 pushes the second mold locking plate 3 to move outward. The movement of the second mold locking plate 3 simultaneously drives the movable gear and the fixed rack to move relative to each other, so that the other end of the mold locking rod 51 moves downward synchronously.

[0029] The rotation of the drive spindle 21 causes the locking rod 43 to swing, thereby sequentially driving the movement of the locking rod 51, the gear and rack assembly 31, the lifting assembly 32, and the lifting bracket 33. This enables the rapid opening and closing of the first locking platen 2 and the second locking platen 3, reducing the energy consumption of the locking mechanism. The locking rod 51 is connected to both the first locking platen 2 and the second locking platen 3. When the mold is fully open, the locking rod 51 is in its lowest position, facilitating mold replacement.

[0030] Preferably, the gear and rack component 31 also includes a template servo motor, which is mounted on the second locking template 3, and the shaft end of the template servo motor is connected to the movable gear. The relative movement between the movable gear and the fixed rack can also be driven by the template servo motor, and the speed at which the template servo motor drives the lifting bracket 33 to move up and down is synchronized according to the movement trajectory of the locking linkage 43.

[0031] Preferably, the lifting component 32 includes a first lifting pulley 321, a second lifting pulley, and a synchronous belt 322. The first lifting pulley 321 and the second lifting pulley are arranged vertically on one side of the second locking template 3. The synchronous belt 322 meshes with the first lifting pulley 321 and the second lifting pulley. The second lifting pulley is coaxially connected to the movable gear, and the synchronous belt 322 is connected to the lifting bracket 33. Thus, through synchronous belt transmission, the relative movement of the movable gear and the fixed rack can drive the rotation of the second lifting pulley, thereby driving the lifting bracket 33 to rise and fall via the synchronous belt 322, thus realizing the mold opening and closing process.

[0032] Preferably, the length of the mold clamping rod 51 is adjustable. The adjustable length of the mold clamping rod 51 can be achieved by using a telescopic rod or other means. By adjusting the length of the mold clamping rod 51, the distance between the first locking platen 2 and the second locking platen 3 during mold closing can be adjusted, adapting to molds of different thicknesses and providing strong adaptability to different products.

[0033] Preferably, it also includes an electronic ruler 7, which is mounted on the base 1 of the swing frame, and the detection end of the electronic ruler 7 is connected to the first locking template 2. By connecting the detection end of the electronic ruler 7 to the first locking template 2, the position of the first locking template 2 can be obtained in real time, which facilitates the setting of electronic limits for the first locking template 2.

[0034] Preferably, the first locking platen 2 is provided with an upper limit pin 5, which is located on the movement trajectory of the locking rod 43. When the locking rod 43 abuts against the upper limit pin 5, the first locking platen 2 and the second locking platen 3 are in the mold-closed state.

[0035] Preferably, it further includes a synchronous motion component 8, which is used to enable the first locking template 2 and the second locking template 3 to move synchronously towards or in opposite directions on the swing frame base 1. The synchronous motion component 8 guides the movement of the first locking template 2 and the second locking template 3.

[0036] Furthermore, the synchronous motion component 8 includes a first synchronous rack, a second synchronous rack, and a synchronous gear. The first and second synchronous racks are parallel and respectively disposed on the first locking template 2 and the second locking template 3. The synchronous gear is disposed in the middle of the swing frame base 1, and both the first and second synchronous racks mesh with the synchronous gear. The first and second synchronous racks are located on the upper and lower sides of the synchronous gear, respectively, and both mesh with the synchronous gear, so that the first locking template 2 and the second locking template 3 move the same distance.

[0037] Preferably, the system also includes a servo drive motor 22 and a reduction gearbox 23. The reduction gearbox 23 is mounted on the first locking plate 2. The shaft end of the servo drive motor 22 is connected to the input end of the reduction gearbox 23, and the output end of the reduction gearbox 23 is connected to the drive spindle 21. Thus, the servo drive motor 22 and the reduction gearbox 23 drive the rotation of the drive spindle 21.

[0038] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of the invention and should not be construed as limiting the scope of protection of the invention in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of the invention without inventive effort, and these embodiments will all fall within the scope of protection of the present invention.

Claims

1. A mold-locking mechanism that utilizes the rotation of a connecting rod to drive a pull rod to move up and down synchronously, characterized in that, It includes a swing frame base, a first locking template, a second locking template, and an opening and closing mold assembly; the first locking template and the second locking template are slidably disposed on the swing frame base; The mold opening and closing assembly includes a mold locking rod, a drive spindle, a mold locking connecting rod, a gear and rack assembly, a lifting assembly, and a lifting bracket; The drive spindle is mounted on the first locking template, one end of the locking mold connecting rod is connected to the drive spindle, and the other end of the locking mold connecting rod is hinged to one end of the locking mold pull rod. The lifting component is mounted on the second locking template. The gear and rack component includes a fixed rack and a movable gear that mesh with each other. The fixed rack is arranged parallel to the swing frame base. The movable gear is rotatably connected to the second locking template. The movable gear is connected to the input end of the lifting component. The lifting bracket is connected to the lifting end of the lifting component. When the mold is closed, the drive spindle drives the mold locking link to swing upward away from the second mold locking plate, and the mold locking pull rod pulls the second mold locking plate towards the center. The movement of the second mold locking plate simultaneously drives the movable gear and the fixed rack to move relative to each other, so that the other end of the mold locking pull rod moves upward synchronously. When the mold is opened, the drive spindle drives the locking rod to swing downward toward the direction of the second locking platen, the locking rod pushes the second locking platen to move outward, and the movement of the second locking platen simultaneously drives the movable gear and the fixed rack to move relative to each other, so that the other end of the locking rod moves downward synchronously. The lifting component includes a first lifting pulley, a second lifting pulley, and a synchronous belt. The first lifting pulley and the second lifting pulley are arranged vertically on one side of the second locking template. The synchronous belt meshes with the first lifting pulley and the second lifting pulley. The second lifting pulley is coaxially connected to the movable gear. The synchronous belt is connected to the lifting bracket.

2. The mold-locking mechanism according to claim 1, which uses the rotation of a connecting rod to drive a pull rod to move up and down synchronously, is characterized in that, The gear and rack component also includes a template servo motor, which is mounted on the second locking template, and the shaft end of the template servo motor is connected to the movable gear.

3. A mold-locking mechanism according to claim 1, which uses the rotation of a connecting rod to drive a pull rod to move up and down synchronously, is characterized in that... The length of the locking rod is adjustable.

4. A mold-locking mechanism according to claim 1, which uses the rotation of a connecting rod to drive a pull rod to move up and down synchronously, is characterized in that... It also includes an electronic ruler, which is mounted on the base of the swing frame, and the detection end of the electronic ruler is connected to the first lock template.

5. A mold-locking mechanism according to claim 1, which uses the rotation of a connecting rod to drive a pull rod to move up and down synchronously, is characterized in that, The first locking template is provided with an upper limit pin, which is located on the movement trajectory of the locking template connecting rod.

6. A mold-locking mechanism according to claim 1, which uses the rotation of a connecting rod to drive a pull rod to move up and down synchronously, is characterized in that, It also includes a synchronous motion component, which is used to make the first locking template and the second locking template move synchronously towards or in opposite directions on the swing frame base.

7. A mold-locking mechanism according to claim 6, which uses the rotation of a connecting rod to drive a pull rod to move up and down synchronously, is characterized in that... The synchronous motion component includes a first synchronous rack, a second synchronous rack, and a synchronous gear. The first synchronous rack and the second synchronous rack are parallel and respectively disposed on the first locking template and the second locking template. The synchronous gear is disposed in the middle of the swing frame base. Both the first synchronous rack and the second synchronous rack mesh with the synchronous gear.

8. A mold-locking mechanism according to claim 1, which uses the rotation of a connecting rod to drive a pull rod to move up and down synchronously, is characterized in that, It also includes a servo drive motor and a gearbox. The gearbox is mounted on the first locking template. The shaft end of the servo drive motor is connected to the input end of the gearbox, and the output end of the gearbox is connected to the drive spindle.

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