A kind of blowing machine bottom mold retaining mechanism
Technical field
The present invention relates to a kind of retaining mechanism of bottle blowing machine, particularly relate to a kind of bed die retaining mechanism of bottle blowing machine.
Background technology
Bottle blowing machine is the equipment in the plastic bottle processing and manufacturing fields such as beverage bottle, oil bottle, medicine bottle.Bottle blowing machine comprises left mould, right mould and bed die, and three coordinates a complete bottle die cavity of formation.During work, within opening left and right mould and bed die and bottle base being placed in to die cavity, close again left and right mould and bed die, bottle base is carried out to blowing processing, after complete bottle moulding to be processed, open left and right mould and bed die, now bed die declines and exits cavity positions, and next procedure is taken and delivered to the bottle after machining away.After exiting die cavity, bed die needs to be locked, existing bed die retaining mechanism as shown in Figure 1, comprise the base plate 101 being fixed on mould rack, be fixed on the valve body 102 on base plate 101 end faces, between base plate 101 and valve body 102, have closed containing cavity 103, the lower end that connects the bed die blind rivet 104 of bed die is placed in closed containing cavity 103, adapter sleeve 105 on the lower end that is placed on bed die blind rivet 104 is also housed in closed containing cavity 103, with the piston 106 being placed on outside adapter sleeve 105, the outer wall of piston 106 pushes against the inwall of closed containing cavity 103, the snap joint 107 that passes into gas is also housed on base plate 101, on valve body 102, have the interface channel 108 of the closed containing cavity 103 that is communicated with snap joint 107 and piston 106 tops, compression spring 109 is equipped with in the below of piston 106, on the outer wall of the lower end of bed die blind rivet 104, piston 106 is placed on and on the inwall on adapter sleeve 105, all has groove, on adapter sleeve 105, have the groove that is communicated with the groove of bed die blind rivet 104 and the groove of piston 106, in groove, be placed with steel ball 110, steel ball 110 is rollably placed between bed die blind rivet 104 and adapter sleeve 105 or between adapter sleeve 105 and piston 106 and by corresponding two parts clampings and fixes.
During work, low pressure gas from snap joint 107 in interface channel 108 enters the closed containing cavity 103 of piston 106 tops, the pressure of low pressure gas forces piston 106 to move downward, when the groove of piston 106 is relative with steel ball 110, because bed die blind rivet 104 drives bed die, move upward, push the former steel ball 110 being placed between bed die blind rivet 104 and adapter sleeve 105 and enter in the groove of piston; After bottle blowing finishes, bed die blind rivet 104 drives bed die to decline, low pressure gas stops being filled with, piston 106 moves upward under the effect of compression spring 109, when the groove of bed die blind rivet 104 is relative with steel ball, piston 106 extruding is former be placed between adapter sleeve 105 or adapter sleeve 105 and piston 106 between steel ball 110 enter in the groove of bed die blind rivet 104, now steel ball 110 is by bed die blind rivet 104 and the stuck locking of adapter sleeve 105.Bottle blowing machine all can produce vibration in the whole course of work, bed die retaining mechanism vibrates thereupon, this makes steel ball and piston inboard groove produce strong extruding and friction, thereby cause the damage of steel ball or break and the wearing and tearing of piston inboard groove, cause the locking effect of retaining mechanism to reduce, even lost efficacy, and replacing complicated operation and the difficulty of steel ball and piston greatly affect the use of bottle blowing machine.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of simple in structure and blowing machine bottom mold retaining mechanism that durability is stronger and to make it durable in use, is difficult for loss, and reduces costs.
Blowing machine bottom mold retaining mechanism of the present invention, comprise the base plate being fixed in bottle blowing machine frame and the bed die blind rivet that is connected bed die, on the outer wall of bed die blind rivet, have locating slot, the moving block of strap cam curve is housed on base plate, the latch segment that has the locking bed die blind rivet rotating around the alignment pin being fixed on base plate, latch segment is provided with the locking head that snaps in locating slot and be fixed, cam curve when moving block rotates on it drives latch segment rotate and locking head snapped in or exit locating slot, the drive unit that drives in addition moving block to rotate.
Blowing machine bottom mold retaining mechanism of the present invention, the outer wall of the bed die blind rivet being connected with bed die is provided with locating slot, the latch segment of locking bed die blind rivet is housed on base plate, and latch segment is to be snapped in locating slot bed die blind rivet is locked by setting locking head thereon.During work, drive unit drives moving block to rotate, and the cam curve on it drives latch segment to rotate around alignment pin, and when latch segment rotates to precalculated position, the locking head on it snaps in the locating slot of bed die blind rivet bed die blind rivet is locked; Complete while needing release when locking, drive unit drives moving block to return back to original position, and the cam curve on it can drive latch segment to rotate, until locking head exits locating slot, thereby completes release.This blowing machine bottom mold retaining mechanism is to be fixed and to be realized locking by latch segment and bed die blind rivet, and its structure is very simple; Parts are compared with large and firm block structure, have better wearability and durability, are difficult for causing loss, are conducive to improve reduce costs service life; Parts are arranged on base plate but not its inside, and the operation of be more convenient for its maintenance and replacing improves maintenanceability and can and reduce maintenance difficulties, is more conducive to the normal use of bottle blowing machine.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing blowing machine bottom mold retaining mechanism.
Fig. 2, the 3rd, blowing machine bottom mold retaining mechanism of the present invention is at the structural representation of unlocked position.
Fig. 4, the 5th, the blowing machine bottom mold retaining mechanism shown in Fig. 2 is at the structural representation of locked position.
Fig. 6, the 7th, the partial structurtes schematic diagram of the blowing machine bottom mold retaining mechanism shown in Fig. 2.
Fig. 8 is the cutaway view of the blowing machine bottom mold retaining mechanism shown in Fig. 3.
The specific embodiment
As shown in Fig. 2-9.
Blowing machine bottom mold retaining mechanism of the present invention, comprise the base plate 1 being fixed in bottle blowing machine frame and the bed die blind rivet 2 that is connected bed die, on the outer wall of bed die blind rivet 2, have locating slot 21, the moving block 3 of strap cam curve is housed on base plate 1, the latch segment 5 that has the locking bed die blind rivet 2 rotating around the alignment pin 4 being fixed on base plate 1, latch segment 5 is provided with the locking head 51 that snaps in locating slot 21 and be fixed, cam curve when moving block 3 rotates on it drives latch segment 5 rotate and make locking head 51 snap in or exit locating slot 21, the drive unit that drives in addition moving block 3 to rotate.
Described blowing machine bottom mold retaining mechanism, locking head 51 is locked by plane-plane contact with locating slot 21; Drive unit is drive motors, or comprises the drive link 61 being connected with moving block 3 and the driving handle 62 being connected with drive link 61; The limited block 7 of the rotational travel of restriction drive link 61 is housed on base plate 1, limited block 7 is provided with stopper slot 71, drive link 61 is moved in stopper slot 71 scopes, and two extreme positions of stopper slot 71 are respectively the positions that drive link 61 drives the locking of blowing machine bottom mold retaining mechanism and unties; Driving handle 62, along being hinged on rotationally on the axis direction of moving block 3 in drive link 61, has the storage tank 11 of accommodating driving handle 62 on the lateral surface of base plate 1 below the hinged place of locked position; Have the positioning sleeve 8 being placed on outside bed die blind rivet 2, the lower end of positioning sleeve 8 is fixed on base plate 1, and the middle part of positioning sleeve 8 has the locating hole passing through while rotating for latch segment 5, and the size of locating hole only can meet latch segment 5 and pass through; The cover plate 9 that has covering mechanism upper surface, has the through hole stretching out for the upper end of bed die blind rivet 2 on cover plate 9.
During locking work, driving handle and drive link are positioned at the release extreme position of the stopper slot on limited block, now pull driving handle, and then drive moving block to rotate by drive link, cam curve on moving block drives latch segment to rotate around alignment pin, when latch segment rotates to precalculated position, locking head on it snaps in the locating slot of bed die blind rivet bed die blind rivet is locked, and locking head and locating slot are plane-plane contact locking, in the process that moving block rotates, locating hole on positioning sleeve forms alignment restrictions to moving block on the axis direction of alignment pin, locked rear rotating drive handle and made it to be placed in the storage tank on base plate, now drive link is positioned at the locking extreme position of the stopper slot on limited block, lock completely while needing release, pull driving handle and take out in storage tank, pull driving handle and drive moving block to return back to release extreme position by drive link, make the locking head of latch segment exit the locating slot on bed die blind rivet, thereby complete release.
This blowing machine bottom mold retaining mechanism is to be fixed and to be realized locking by latch segment and bed die blind rivet, and its structure is very simple; Parts are compared with large and firm block structure, have better wearability and durability, are difficult for causing loss, are conducive to improve reduce costs service life; Locking head and locating slot are fixed by face face, and its mating surface can be that plane can be also curved surface, and both plane-plane contacts have larger contact force, strengthen its locking effect, and improve its wearability and durability; Moving block drives by drive link and driving handle, and it is simple in structure, swift to operate; Effective formation has been formulated in the setting of limited block, guarantees that rotation can not exceed safe range and damage parts, can directly forward extreme position while making to operate again to, improves its ease-to-operate; Driving handle and drive link are hinged, and base plate is provided with the storage tank of placing driving handle, and after completing locking operation, driving handle is positioned in storage tank, can not be collided and cause the accidental unlocking of mechanism, greatly improve its job security; Latch segment rotates around alignment pin, but it does not stop and limits on the axis direction of alignment pin, easily deviates from or rocks, the setting of positioning sleeve can head it off, well the rotation of moving block is formed to restriction and guiding, guaranteed moving block and bed die blind rivet coordinate; Parts are arranged on base plate but not its inside, and the operation of be more convenient for its maintenance and replacing improves maintenanceability and can and reduce maintenance difficulties, is more conducive to the normal use of bottle blowing machine; The setting of cover plate can form to the parts in it effective protection, avoids being subject to ectocine, and limits and prevent that parts from coming off or flying out, and has guaranteed job stability and the security of equipment.