A mold clamping frame hook mechanism using a main shaft groove

Abstract

The application discloses a mold locking frame hook mechanism using a main shaft groove, which comprises a mold locking plate, a driving main shaft, a cam, a lock piece, an adjusting structure and a mold locking connecting rod. The driving main shaft is arranged on the mold locking plate, the cam is sleeved on the driving main shaft, and the lock piece is arranged on the mold locking connecting rod. A lock groove is formed in one side of the lock piece, and a lock block matched with the lock groove is arranged at the top end of the cam. The lock piece is kept in engagement with the lock block under the action of the adjusting structure. An upper limiting structure is arranged on the mold locking plate and above the mold locking connecting rod. The lock piece and the cam are kept in engagement, so that the rotation of the driving main shaft can drive the mold locking connecting rod to swing, the swing of the mold locking connecting rod is realized when the mold is opened and closed, and when the mold locking connecting rod swings to a mold locking position, the cam is separated from the lock piece. At this time, the continuous rotation of the driving main shaft will cause relative movement with the mold locking connecting rod, so that the same power source can complete the actions of mold opening, mold closing and mold locking.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of mold clamping device, and particularly relates to a mold clamping frame hook mechanism using a main shaft groove. BACKGROUND

[0002] The mold clamping device is one of important components of an extrusion blow molding machine, and is mainly used for opening and closing of a mold and high-pressure mold clamping. The mold clamping device commonly used in the market usually uses two power sources to complete the opening and closing of the mold and the mold clamping, which results in complex operation of the machine. SUMMARY

[0003] The present application aims to provide a mold clamping frame hook mechanism using a main shaft groove to solve one or more technical problems in the background.

[0004] To achieve the above purpose, the present application adopts the following technical scheme:

[0005] A mold clamping frame hook mechanism using a main shaft groove, comprising a mold clamping plate, a driving main shaft, a cam, a locking piece, an adjusting structure and a mold clamping connecting rod.

[0006] The driving main shaft is arranged on the mold clamping plate, the cam is sleeved on the driving main shaft, the locking piece is arranged on the mold clamping connecting rod, one side of the locking piece is provided with a locking groove, the top end of the cam is provided with a locking block matched with the locking groove, and the locking piece is kept in engagement with the locking block under the action of the adjusting structure.

[0007] When the mold is closed, the cam is engaged with the locking piece, at this time, the rotation of the driving main shaft can drive the mold clamping connecting rod to swing.

[0008] When the mold is clamped, the mold clamping connecting rod swings to abut against the upper limiting structure on the mold clamping plate, and the cam moves relative to the locking piece under the continuous rotation of the driving main shaft, and the locking block is separated from the locking groove.

[0009] After the mold clamping is completed, the driving main shaft is rotated to drive the cam and the locking piece to be engaged and locked again, and the driving main shaft is continuously rotated to drive the mold clamping connecting rod to swing.

[0010] Preferably, when the cam is engaged with the locking piece, the center line of the locking block is lower than the center line of the locking groove.

[0011] Preferably, one side of the locking piece is provided with a notch part, and the locking groove is arranged in the notch part.

[0012] Preferably, the adjusting structure comprises a tension spring and an adjusting plate, one end of the tension spring and the adjusting plate are arranged on the mold locking connecting rod, the other end of the tension spring is connected with the lock piece, and the lock piece is in abutment with the adjusting plate.

[0013] Preferably, the lock piece is provided with a first connecting arm and a second connecting arm on one side, the first connecting arm is connected with the other end of the tension spring, the second connecting arm is provided with a pulley, and the pulley is in contact with the adjusting plate.

[0014] Preferably, the adjusting structure further comprises an adjusting screw and a limiting top plate, the limiting top plate is arranged on the mold locking connecting rod, the adjusting screw is in threaded connection with the first connecting arm, and the end of the adjusting screw is in abutment with the limiting top plate.

[0015] Preferably, the cam is in key connection with the driving main shaft, and the shaft end of the driving main shaft is connected with the mold locking connecting rod through a bearing.

[0016] Preferably, the upper limiting structure comprises a limiting pin, the limiting pin is vertically arranged on the mold locking plate, and the limiting pin is located on the track of the swing of the mold locking connecting rod.

[0017] Preferably, the two ends of the lock piece are movably connected with the mold locking connecting rod through bearings.

[0018] Preferably, the servo driving motor and a speed reducer are further arranged, the speed reducer is arranged on the mold locking plate, the rotating shaft end of the servo driving motor is connected with the input end of the speed reducer, and the output end of the speed reducer is connected with the driving main shaft.

[0019] The application has the beneficial effect that the rotation of the driving main shaft can drive the swing of the mold locking connecting rod through the setting of the lock piece and the cam, the swing of the mold locking connecting rod driven by the driving main shaft is realized when the mold is opened and closed, when the mold locking connecting rod swings to the mold locking position, the cam is separated from the lock piece, the continuous rotation of the driving main shaft will cause the relative movement of the mold locking connecting rod, and the same power source can complete the actions of opening and closing the mold and locking the mold. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings further illustrate the application, but the content in the drawings does not constitute any limitation on the application.

[0021] Figure 1 is a structure schematic view of the mold locking plate of one embodiment of the application;

[0022] Figure 2 is a buckling schematic view of the lock block and the lock piece of one embodiment of the application;

[0023] Figure 3Figure 1 is a schematic diagram of the installation position of the adjusting plate according to one embodiment of the present application;

[0024] Figure 4 Figure 2 is a schematic diagram of the installation position of the tension spring according to one embodiment of the present application;

[0025] Figure 5 Figure 3 is a schematic diagram of the structure of the locking piece according to one embodiment of the present application.

[0026] Wherein: the mold locking plate 2, the cam 41, the locking piece 42, the driving main shaft 21, the mold locking connecting rod 43, the locking groove 421, the locking block 411, the notch part 422, the limiting pin 5, the tension spring 61, the adjusting plate 62, the first connecting arm 63, the second connecting arm 64, the pulley 65, the adjusting screw 66, the limiting top plate 67, the servo drive motor 22, the speed reducer 23. DETAILED DESCRIPTION

[0027] The technical solutions of the present application will be further described below by means of specific embodiments in conjunction with the accompanying drawings.

[0028] The mold locking frame hook mechanism of the present embodiment utilizes the main shaft groove, and the reference is made to the accompanying drawings Figure 1 , which comprises the mold locking plate 2, the driving main shaft 21, the cam 41, the locking piece 42, the adjusting structure and the mold locking connecting rod 43;

[0029] The driving main shaft 21 is arranged on the mold locking plate 2, the cam 41 is sleeved on the driving main shaft 21, the locking piece 42 is arranged on the mold locking connecting rod 43, one side of the locking piece 42 is provided with the locking groove 421, the top end of the cam 41 is provided with the locking block 411 matched with the locking groove 421, the locking piece 42 is kept in engagement with the locking block 411 under the action of the adjusting structure, the upper limiting structure is arranged on the mold locking plate 2, the upper limiting structure is arranged above the mold locking connecting rod 43, the shaft end of the driving main shaft 21 is connected with one end of the mold locking connecting rod 43 through a bearing, the other end of the mold locking connecting rod 43 is movably connected with one end of the mold locking rod, the other end of the mold locking rod is connected with the other mold locking seat;

[0030] When the mold is closed, the cam 41 is engaged with the locking piece 42, at this time, the rotation of the driving main shaft 21 can drive the mold locking connecting rod 43 to swing;

[0031] When the mold is locked, the mold locking connecting rod 43 swings to abut against the upper limiting structure on the mold locking plate 2, the cam 41 moves relative to the locking piece 42 under the continuous rotation of the driving main shaft 21, the locking block 411 is separated from the locking groove 421;

[0032] After the mold locking is completed, the driving main shaft 21 is rotated to drive the cam 41 to engage with the locking piece 42 again, the driving main shaft 21 is continuously rotated to drive the mold locking connecting rod 43 to swing.

[0033] The lock catch 42 and the cam 41 are set to be buckled, so that the rotation of the driving main shaft 21 can drive the lock mold connecting rod 43 to swing, and the rotation of the driving main shaft 21 can drive the lock mold connecting rod 43 to swing when the mold is opened and closed. When the lock mold connecting rod 43 swings to the locking position, the cam 41 is separated from the lock catch 42, and the continuous rotation of the driving main shaft 21 will cause relative movement with the lock mold connecting rod 43. The same power source is used to complete the opening and closing of the mold and the locking action. The mold clamping hook mechanism of the embodiment can be used for the mold clamping device which uses the same mold clamping rod to realize the opening and closing of the two mold plates and the locking action.

[0034] Preferably, referring to the accompanying drawings Figure 2 When the cam 41 is buckled with the lock catch 42, the center line C of the lock block 411 is lower than the center line D of the lock catch groove 421. Referring to the drawings, when the lock mold connecting rod 43 swings to the horizontal position, the cross-sectional shape of the lock block 411 is circular, the horizontal straight line passing through the center of the lock block 411 is the center line D of the lock block 411, and the horizontal straight line passing through the center of the lock catch groove 421 is the center line C of the lock catch groove 421. The center line D of the lock block 411 is lower than the center line C of the lock catch groove 421, so that the buckling of the lock block 411 and the lock catch groove 421 is more compact, and it is ensured that the lock block 411 remains buckled with the lock catch groove 421 during the opening and closing of the mold.

[0035] Preferably, one side of the lock catch 42 is provided with a notch portion 422, and the lock catch groove 421 is provided in the notch portion 422. By providing the notch portion 422, the contact area between the lock catch 42 and the cam 41 is increased, so that the rotation of the driving main shaft 21 can be transmitted to the lock catch 42 through the cam 41 during the opening and closing of the mold, and the swing of the lock mold connecting rod 43 is realized. When the cam 41 is buckled with the lock catch 42, the two ends of the notch portion 422 are in contact with the two ends of the lock block 411, which plays a role of left and right limiting.

[0036] Preferably, the adjusting structure includes a tension spring 61 and an adjusting plate 62, referring to the accompanying drawings Figures 3-5 One end of the tension spring 61 and the adjusting plate 62 are arranged on the lock mold connecting rod 43, the other end of the tension spring 61 is connected with the lock catch 42, and the lock catch 42 is in abutment with the adjusting plate 62. The tension spring 61 provides upward tension to the lock catch 42, and the adjusting plate 62 provides downward pressure to the lock catch 42, so that the lock catch 42 remains relatively stationary under the joint action of the tension spring 61 and the adjusting plate 62, which ensures that the lock block 411 is buckled with the lock catch groove 421 during the opening and closing of the mold, and the lock block 411 can be separated from the lock catch 42 during the locking, and the lock block 411 can be buckled with the lock catch groove 421 again after the locking is completed.

[0037] Preferably, the lock piece 42 is provided with a first connecting arm 63 and a second connecting arm 64 on the left and right sides, the first connecting arm 63 is connected with the other end of the tension spring 61, the second connecting arm 64 is provided with a pulley 65, the pulley 65 is in contact with the adjusting plate 62, the height of the adjusting plate 62 is adjustable. The first connecting arm 63 and the second connecting arm 64 are arranged on one side of the lock piece 42, avoiding interference between the cam 41 and the mold locking link 43 when the cam 41 and the mold locking link 43 move relatively, ensuring that the lock piece 42 always remains stationary.

[0038] Preferably, the adjusting structure further comprises an adjusting screw 66 and a limiting top plate 67, the limiting top plate 67 is arranged on the mold locking link 43, the adjusting screw 66 is threadedly connected with the first connecting arm 63, and the end of the adjusting screw 66 is in abutment with the limiting top plate 67. Thus, by abutting the top of the adjusting screw 66 with the limiting top plate 67, the extension amount of the tension spring 61 can be changed when the adjusting screw 66 is adjusted, so that the position of the lock recess 421 is changed, and the fine adjustment of the position of the lock recess 421 is realized.

[0039] Preferably, the cam 41 is connected with the driving main shaft 21 by a key, and the shaft end of the driving main shaft 21 is connected with the mold locking link 43 through a bearing. The cam 41 is connected with the driving main shaft 21 by the key. The shaft end of the driving main shaft 21 is movably connected with the lock link through a bearing. Thus, the mold locking structure can be arranged on the shaft end of the driving main shaft 21, so that the hook mechanism is used to realize the action of opening and closing the mold and locking the mold by a single power source.

[0040] Preferably, the upper limiting structure comprises a limiting pin 5, the limiting pin 5 is vertically arranged on the mold locking plate 2, and the limiting pin 5 is located on the track of the swing of the mold locking link 43. Thus, when the mold locking link 43 swings to abut against the limiting pin 5, the cam 41 moves relatively with the lock piece 42 under the continuous rotation of the driving main shaft 21, so that the lock block 411 is separated from the lock recess 421.

[0041] Preferably, the two ends of the lock piece 42 are movably connected with the mold locking link 43 through bearings.

[0042] Preferably, the servo drive motor and a reduction box are further included, the reduction box is arranged on the mold locking plate 2, the rotating shaft end of the servo drive motor is connected with the input end of the reduction box, and the output end of the reduction box is connected with the driving main shaft 21. Thus, the rotation of the driving main shaft 21 is driven by the servo drive motor and the reduction box.

[0043] The technical principles of the present application are described above in combination with specific embodiments. These descriptions are only for explaining the principles of the present application, and cannot be explained as limitations on the protection scope of the present application in any way. Based on the explanations herein, other specific embodiments of the present application can be conceived by those skilled in the art without creative labor, and these embodiments will fall within the protection scope of the present application.

Claims

1. A mold-clamp-carriage hook mechanism utilizing a main shaft groove, characterized by, The mould locking device comprises a mould locking plate, a driving spindle, a cam, a locking piece, an adjusting structure and a mould locking connecting rod. The driving spindle is arranged on the mould locking plate, the cam is sleeved on the driving spindle, the locking piece is arranged on the mould locking connecting rod, one side of the locking piece is provided with a locking recess, the top end of the cam is provided with a locking block matched with the locking recess, the locking piece is kept in engagement with the locking block under the action of the adjusting structure, and an upper limiting structure is arranged on the mould locking plate and above the mould locking connecting rod. When the mould is closed, the cam is engaged with the locking piece, and the rotation of the driving spindle drives the mould locking connecting rod to swing. When the mould is locked, the mould locking connecting rod swings to abut against the upper limiting structure on the mould locking plate, and the cam moves relative to the locking piece under the continuous rotation of the driving spindle, and the locking block is separated from the locking recess. After the mould locking is completed, the driving spindle rotates to drive the cam to engage with the locking piece again, and the driving spindle continues to rotate to drive the mould locking connecting rod to swing. One side of the locking piece is provided with a notch, and the locking recess is arranged in the notch. The adjusting structure comprises a tension spring and an adjusting plate, one end of the tension spring and the adjusting plate are arranged on the mould locking connecting rod, the other end of the tension spring is connected with the locking piece, and the locking piece abuts against the adjusting plate. One side of the locking piece is provided with a first connecting arm and a second connecting arm, the first connecting arm is connected with the other end of the tension spring, the second connecting arm is provided with a pulley, and the pulley contacts the adjusting plate. The adjusting structure further comprises an adjusting screw and a limiting top plate, the limiting top plate is arranged on the mould locking connecting rod, the adjusting screw is threadedly connected with the first connecting arm, and the end of the adjusting screw abuts against the limiting top plate.

2. A mold frame hook mechanism using a main shaft groove according to claim 1, characterized in that, When the cam is engaged with the locking piece, the center line of the locking block is lower than the center line of the locking recess.

3. A mold frame hook mechanism using a main shaft groove according to claim 1, characterized in that, The cam is connected with the driving spindle by a key, and the shaft end of the driving spindle is connected with the mould locking connecting rod through a bearing.

4. A mold frame hook mechanism using a main shaft groove according to claim 1, characterized in that, The upper limiting structure comprises a limiting pin, and the limiting pin is vertically arranged on the mould locking plate and located on the track of the swinging of the mould locking connecting rod.

5. A mold frame hook mechanism using a main shaft groove according to claim 1, characterized in that, The two ends of the locking piece are movably connected with the mould locking connecting rod through bearings.

6. A mold frame hook mechanism using a main shaft groove according to claim 1, characterized in that, The mould locking device further comprises a servo driving motor and a speed reducer, the speed reducer is arranged on the mould locking plate, the rotating shaft end of the servo driving motor is connected with the input end of the speed reducer, and the output end of the speed reducer is connected with the driving spindle.

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