CN210705880U - Synchronous band-type brake device and two-plate injection molding machine - Google Patents
Synchronous band-type brake device and two-plate injection molding machine Download PDFInfo
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- CN210705880U CN210705880U CN201920715265.8U CN201920715265U CN210705880U CN 210705880 U CN210705880 U CN 210705880U CN 201920715265 U CN201920715265 U CN 201920715265U CN 210705880 U CN210705880 U CN 210705880U
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Abstract
The utility model discloses a synchronous brake device and two board injection molding machines, including band-type brake drive assembly, support, first band-type brake nut, second band-type brake nut and synchronous subassembly, the spout has been seted up to the support, and first band-type brake nut and second band-type brake nut all can be located in the spout slidably, and synchronous subassembly includes first limiting plate, guide post and spring, and the first end of first limiting plate is fixed with the support, and the second end stretches out to the open position that is located the spout; the first end of the guide post located at the first end of the support passes through the corresponding first limiting plate and is fixed with the first band-type brake nut, the guide post is connected with the first limiting plate in a sliding mode, the second end of the guide post is provided with a second limiting plate, the spring sleeve is arranged on the guide post and located between the first limiting plate and the second limiting plate, and the first end of the guide post located in the synchronizing assembly located at the second end of the support passes through the corresponding first limiting plate and is fixed with the second band-type brake nut. The synchronous contracting brake device can realize synchronous contracting brake and opening brake.
Description
Technical Field
The utility model relates to an injection moulding equipment technical field especially relates to a synchronous band-type brake device and two board injection molding machines.
Background
At present, most of mould locking devices used in injection molding equipment and die-casting equipment adopt a two-plate mould locking structure (two-plate machine for short). The two-plate injection molding machine generally comprises a movable template, a fixed template, a mold moving oil cylinder fixed on the fixed template, a pull rod connected between the movable template and the fixed template and used for moving the movable template on the fixed template, a mold locking oil cylinder, a brake mechanism and the like, and the action process of the typical two-plate injection molding machine is as follows: and the moving oil cylinder fixed with the fixed template drives the movable template to move rapidly until the mold is closed, at the moment, the movable template and the pull rod are relatively fixed through the contracting brake mechanism, and then the mold locking oil cylinder pulls the pull rod to lock the mold. The mould locking device is characterized in that a pull rod is fixed in the mould moving process, and a movable mould plate slides on the pull rod; when the mold is locked, the pull rod and the movable mold plate are relatively fixed, and the pull rod moves relative to the fixed mold plate, namely the movable plate embraces the rod, and the front plate stabilizes the pressure.
The existing two-plate injection molding machine can be divided into two types according to the setting position of a mold locking oil cylinder: the first type is arranged on a fixed template, the second type is arranged on a movable template, and the band-type brake mechanisms are all designed on the movable template and realize the relative connection and disconnection between the movable template and the pull rod.
The first mode locking oil cylinder is arranged on the fixed template, a piston of the mode locking oil cylinder is also used as a pull rod of the mode locking mechanism, and the band-type brake mechanism is arranged on the movable template. The structure has the advantages that the adjustment of the position of the band-type brake is completed by moving the pull rod through the mode locking oil cylinder arranged on the head plate, the installation position of the band-type brake mechanism relative to the movable plate is unchanged in the axial direction of the pull rod, the synchronous operation of a plurality of groups of two half band-type brake assemblies is easy to realize through the link mechanism, and the defect that the mode locking oil cylinder and the pull rod are difficult to directly connect, install and maintain is caused, so the manufacturing cost and the maintenance cost of the first mode are high.
The second type is that the mode locking hydro-cylinder sets up on the movable mould board, the pull rod can be fixed completely on the fixed die plate, thereby the independent accurate adjustment is realized through the concertina movement rather than the mode locking hydro-cylinder that is connected separately in the position of every group band-type brake subassembly to realize accurate band-type brake, nevertheless because each group band-type brake mechanism has relative motion in the pull rod axial direction relative movable mould board, be difficult for realizing the synchronous motion of multiunit band-type brake subassembly, and also do not design the lazytongs to the band-type brake nut of single two halves formula, it is reliable and stable inadequately to open the band-type brake, and when two halves band-type brakes are asynchronous, the mechanical impact that the band-type brake brought is opened at a high speed is very.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, one of the purposes of the utility model is to provide a synchronous band-type brake device, which can realize the synchronous band-type brake and the brake opening between two halves of band-type brake nuts, and has the advantages of small impact, low noise and prolonged service life.
The second objective of the present invention is to provide a two-plate injection molding machine with the above-mentioned synchronous brake device.
The utility model discloses an one of the purpose adopts following technical scheme to realize:
synchronous brake device, including band-type brake drive assembly, support, first band-type brake nut, second band-type brake nut and synchronizing assembly, drive assembly includes band-type brake hydro-cylinder and connecting rod, the piston rod of band-type brake hydro-cylinder with first band-type brake nut is connected, the connecting rod is parallel with the piston rod of band-type brake hydro-cylinder, the first end of connecting rod with the cylinder body of band-type brake hydro-cylinder is connected, the second end of connecting rod passes first band-type brake nut and is connected with second band-type brake nut, wherein, sliding fit between first band-type brake nut and the connecting rod, the support is seted up the spout that extends along its length direction, first band-type brake nut and second band-type brake nut all slidable locate in the spout, first band-type brake nut and second band-type brake nut all seted up and are semicircular band-type brake groove, when first band-type brake nut and second band-type brake nut are in the band-type brake state, the band-type brake groove of the first band-type brake nut and the band-type brake groove of the second band-type brake nut are encircled to form a band-type brake hole matched with the pull rod, two groups of synchronous assemblies are arranged at two ends of the support, the two groups of synchronous assemblies arranged at the same end of the support are oppositely arranged, each synchronous assembly comprises a first limiting plate, a guide post and a spring, the first end of the first limiting plate is fixed with the support, and the second end of the first limiting plate extends out to the opening position of the sliding groove; the first end of the guide post located at the first end of the support passes corresponding first limiting plate with first band-type brake nut is fixed, wherein, the guide post with first limiting plate sliding connection, the second end of guide post is equipped with the second limiting plate, the spring housing is located just be located on the guide post between first limiting plate and the second limiting plate, and be located the first end of the guide post in the synchronizing assembly of the second end of support passes corresponding first limiting plate with second band-type brake nut is fixed.
Furthermore, the connecting rods are arranged in two numbers, the two connecting rods are symmetrically arranged about the central axis of the piston rod of the band-type brake oil cylinder, and the central axis of the guide column coincides with the central axis of the corresponding connecting rod.
Further, the guide post is provided with a first through hole extending along the axial direction of the guide post, and the first through hole of the guide post fixed by the first band-type brake nut is in sliding fit with the connecting rod.
Further, the one end that first band-type brake nut and second band-type brake nut kept away from each other all sets firmly lock nut, the outer wall of the first end of guide post is equipped with the screw thread section, the screw thread section with lock nut threaded connection.
Further, the band-type brake driving assembly further comprises a fastening screw, and the fastening screw penetrates through a first through hole of a guide post fixed with the second band-type brake nut and then is fixed with the second band-type brake nut and the connecting rod in sequence.
Further, a second through hole for the connecting rod to pass through is formed in the first band-type brake nut, a guide sleeve is embedded in the second through hole, and the connecting rod is in sliding fit with a center hole of the guide sleeve.
Further, a cylinder cover is fixedly arranged on a cylinder body of the band-type brake oil cylinder, a piston rod of the band-type brake oil cylinder penetrates through the cylinder cover, and the first end of the connecting rod is fixedly connected with the cylinder cover.
Further, the support includes two backup pads, interval and relative setting between two backup pads, wherein one end of backup pad be equipped with backup pad vertically third limiting plate, enclose between third limiting plate and the backup pad and close and form the spout.
Furthermore, a limiting pin is fixedly arranged in the sliding groove, a limiting groove is formed in one end, close to each other, of the first band-type brake nut and the second band-type brake nut, and when the first band-type brake nut and the second band-type brake nut are in band-type brake, the limiting pin is matched with the limiting groove.
The second purpose of the utility model is realized by adopting the following technical scheme:
two board injection molding machines, including fixed die plate, movable mould board, mould moving oil cylinder, mode locking hydro-cylinder and foretell synchronous band-type brake device, the support is fixed in the cylinder body of mode locking hydro-cylinder is close to one of the piston rod of mode locking hydro-cylinder is served, the central axis of the piston rod of mode locking hydro-cylinder with the central axis in band-type brake hole is parallel and is located same horizontal plane.
Compared with the prior art, the beneficial effects of the utility model reside in that:
(1) the contracting brake is synchronized, so that the impact problem caused by asynchronous contracting brakes is greatly reduced, the failure damage of related parts caused by impact is eliminated, and the service life and the reliability of the synchronous contracting brake device are obviously prolonged;
(2) because the springs which are easily available on the market are adopted, and the structure of the synchronous component is extremely simple, the manufacturing cost of the synchronous band-type brake device is greatly reduced, and great cost benefit is brought to the whole equipment;
(3) due to the buffering effect of the spring, the impact degree on the pull rod during brake contracting is greatly reduced, and the damage to the pull rod is avoided.
Drawings
Fig. 1 is a schematic structural view of the synchronous internal contracting brake device of the utility model mounted on a mold locking oil cylinder;
FIG. 2 is a front view of the synchronous band-type brake device shown in FIG. 1;
FIG. 3 is a cross-sectional view of the synchronous brake device shown in FIG. 2;
FIG. 4 is a right side view of the synchronous brake device shown in FIG. 2;
FIG. 5 is a force analysis diagram of the first band-type brake nut shown in FIG. 2 in a band-type brake state;
fig. 6 is a force analysis diagram of the second band-type brake nut shown in fig. 2 in a band-type brake state.
In the figure: 100. moving the template; 200. a mold locking oil cylinder; 300. a synchronous band-type brake device; 310. a drive assembly; 311. a band-type brake oil cylinder; 312. a piston rod; 313. a cylinder cover; 314. a connecting rod; 315. fastening screws; 320. A support plate; 321. a third limiting plate; 330. a first band-type brake nut; 340. a second band-type brake nut; 350. A synchronization component; 351. a first limit plate; 352. a guide post; 353. a spring; 354. a second limiting plate; 360. a guide sleeve; 370. and a limiting pin.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
The utility model discloses a two board injection molding machines include the fixed die plate, movable mould board 100, the mould moving hydro-cylinder, mode locking hydro-cylinder 200 and synchronous band-type brake device 300, mode locking hydro-cylinder 200 is equipped with four, correspondingly, synchronous band-type brake device 300 is equipped with four groups, the support of synchronous band-type brake device 300 is fixed in one of the cylinder body that mode locking hydro-cylinder 200 is close to the piston rod of mode locking hydro-cylinder 200 and serves, the central axis of the piston rod of mode locking hydro-cylinder 200 and the central axis of the band-type brake hole of synchronous band-type brake device 300 are parallel and are. It is understood that the specific structure of the two-plate injection molding machine not mentioned in the present invention can be referred to a mold locking device of an injection molding machine disclosed in application No. CN201811364219.4 or a mold locking device of a two-plate machine disclosed in application No. CN 200820125062.5.
Referring to fig. 1-4, a synchronous brake device 300 according to a preferred embodiment of the present invention includes a brake driving assembly 310, a support, a first brake nut 330, a second brake nut 340 and a synchronizing assembly 350, wherein the driving assembly 310 includes a brake cylinder 311 and a connecting rod 314, a piston rod 312 of the brake cylinder 311 is fixedly connected to the first brake nut 330 to drive the first brake nut 330 to slide, the connecting rod 314 is parallel to the piston rod 312 of the brake cylinder 311, a first end of the connecting rod 314 is fixedly connected to a cylinder body of the brake cylinder 311, a second end of the connecting rod 314 passes through the first brake nut 330 and is fixedly connected to the second brake nut 340, wherein the first brake nut 330 and the connecting rod 314 are slidably engaged to drive the second brake nut 340 to slide in a direction opposite to a sliding direction of the first brake nut 330, the support is provided with a sliding groove extending along a length direction thereof, the first band-type brake nut 330 and the second band-type brake nut 340 are slidably disposed in the sliding grooves, semicircular band-type brake grooves are formed in the first band-type brake nut 330 and the second band-type brake nut 340, when the first band-type brake nut 330 and the second band-type brake nut 340 are in a band-type brake state, the band-type brake groove of the first band-type brake nut 330 and the band-type brake groove of the second band-type brake nut 340 enclose to form a band-type brake hole matched with the pull rod, a plurality of annular teeth are formed on a hole wall of the band-type brake hole, the annular teeth can be matched with corresponding tooth-shaped end faces of the pull rod after the pull rod is tightly held, and the pull rod can serve as a fulcrum for stress of the movable mold 100 when the mold locking cylinder 200 is pressurized for mold locking or mold opening.
When the two ends of the support are provided with the at least one set of synchronizing assembly 350, the two sets of synchronizing assemblies 350 are arranged at opposite angles of the two ends of the support, so that the two sets of synchronizing assemblies 350 at the two ends of the support are arranged in a staggered manner to ensure uniform stress, in the preferred embodiment of the present invention, the two sets of synchronizing assemblies 350 are arranged at the two ends of the support, and the two sets of synchronizing assemblies 350 at the same end of the support are arranged oppositely, so that the stress is more uniform, the buffering effect is better, and the synchronism is better, specifically, the synchronizing assembly 350 comprises a first limiting plate 351, a guide post 352 and a spring 353, the first end of the first limiting plate 351 is fixed with the support, the second end of the first limiting plate 351 extends to an opening position of the chute, so as to play a role of limiting the maximum sliding stroke of the first band-type brake nut 330 or the second band-type brake nut 340, the first end of the guide column 352 located at the first end of the support passes through the corresponding first limiting plate 351 and is fixed to the first band-type brake nut 330, wherein the guide column 352 is slidably connected with the first limiting plate 351 to play a role in guiding, the second end of the guide column 352 is provided with a second limiting plate 354, the spring 353 is sleeved on the guide column 352 and is located between the first limiting plate 351 and the second limiting plate 354, and the first end of the guide column 352 located in the synchronizing assembly 350 located at the second end of the support passes through the corresponding first limiting plate 351 and is fixed to the second band-type brake nut 340.
The utility model discloses a synchronous band-type brake device 300's theory of operation as follows: when the brake is switched on, the contracting brake cylinder 311 is driven to feed high-pressure oil into the rod cavity, oil is discharged from the rodless cavity, the piston rod 312 is contracted, the piston rod 312 and the cylinder body of the contracting brake cylinder 311 are close to each other, so that the piston rod 312 and the connecting rod 314 move away from each other, meanwhile, the connecting rod 314 fixedly arranged on the cylinder body of the contracting brake cylinder 311 is fixedly connected with the second contracting brake nut 340 due to the fixed connection of the piston rod 312 and the first contracting brake nut 330, the first contracting brake nut 330 and the second contracting brake nut 340 can relatively move away from each other in opposite directions and slide, and the contracting brake cylinder is disconnected from the tooth surface of the pull rod until the contracting brake cylinder contacts with the first limiting block and then stops.
On the contrary, during the contracting brake, the contracting brake cylinder 311 is driven to feed high-pressure oil into the rodless cavity, oil is discharged from the rod cavity, the piston rod 312 extends to enable the piston rod 312 to move away from the connecting rod 314, and simultaneously the first contracting brake nut 330 and the second contracting brake nut 340 are driven to be close to each other until the first contracting brake nut 330 and the second contracting brake nut 340 stop moving after contacting and are attached to the tooth surface of the pull rod.
During the band-type brake, first band-type brake nut 330 and second band-type brake nut 340 are pressed close to each other, and when carrying out the band-type brake action, drive rather than fixed connection's guide post 352 and move together, spring 353 installs between first limiting plate 351 and second limiting plate 354, makes the one end and the first limiting plate 351 contact of spring 353, and the other end contacts with second limiting plate 354, and when first band-type brake nut 330 pressed close to each other with second band-type brake nut 340, spring 353 received the compression. Conversely, when the brake is opened, the first brake nut 330 and the second brake nut 340 are disengaged from each other, and the spring 353 is compressed and reset.
The operation principle of the synchronous brake device 300 is shown in fig. 5 and 6: the following explains the synchronization principle of the synchronous brake device 300 by the brake actuation of the right first brake nut 330: during the brake operation, the driving force is the thrust of the brake cylinder 311, the direction is leftward, the friction resistance of the sliding chute on the first brake nut 330 is rightward, and the spring 353 is compressed to provide a rightward resistance to the guide column 352. The force balance formula when the first band-type brake nut 330 slides at a uniform speed is as follows:
f oil cylinder thrust is ═ sigma N spring force right + ∑ F resistance right- - - (scheme)
F cylinder thrust ∑ F resistance right- (traditional scheme)
V relative speed VA relative speed + VB relative speed
V relative speed: the absolute value of the speed of the piston rod 312 of the brake cylinder 311 relative to the cylinder body
Relative velocity of VA: absolute value of speed of the first band-type brake nut 330 relative to the support
VB relative speed: the absolute value of the speed of the second band-type brake nut 340 relative to the support
From the above two formulas, when the synchronizing assembly 350 is not added, the thrust of the band-type brake cylinder 311 is mainly affected by the friction. When the friction force varies due to machining, lubrication, and the like, the thrust force of the band-type brake cylinder 311 also varies. In addition, when the first band-type brake nut 330 and the second band-type brake nut 340 slide, the friction forces cannot be consistent due to processing, lubrication and the like, the thrust of the band-type brake cylinder 311 is synchronously loaded on the two band-type brake nuts (including the first band-type brake nut 330 and the second band-type brake nut 340), and in motion, the band-type brake cylinder 311 and the band-type brake nut float during sliding, which results in that the thrust of the band-type brake cylinder 311 is equal to the minimum value of the friction resistance of the two band-type brake nuts during motion. The worst case is that half of the brake nuts with large friction resistance stop, half of the brake nuts with small friction resistance move first and impact the pull rod at the maximum speed (V relative speed), until the brake nuts with the minimum friction force are in place, the cylinder body (or the piston rod 312) of the brake cylinder 311 is limited, the oil pressure rises, the brake nuts with large friction resistance start to move, and the pull rod is also impacted at the maximum speed (V relative speed). The asynchronous phenomenon of the single group of brake devices is shown above.
Because the whole machine is provided with four groups of contracting brake devices, if the four groups of contracting brake devices are not provided with the synchronizing component 350, under the worst condition, the half contracting brake nut with the minimum friction force can impact the pull rod at a V relative speed which is 4 times that of the pull rod, and other contracting brake nuts sequentially impact at the speed, so that the whole machine is seriously damaged.
After the synchronizing assembly 350 is added, the rigidity and the pretightening force of the spring 353 are reasonably set, so that the thrust of the spring 353 is far larger than the frictional resistance during movement. The force balance formula when the band-type brake nut slides can be simplified as follows:
f oil cylinder thrust ═ sigma N spring force
At this time, the friction force is no longer taken as a main factor influencing the stress of the brake nuts, and as long as the rigidity and the number of the arranged springs 353 are consistent, the two brake nuts can be ensured to be stressed consistently, and the movement speeds are the same, so that the synchronous brake contracting and brake opening of the first brake nut 330 and the second brake nut 340 can be ensured. At the same band-type brake speed (V relative speed), the speed of each half of the band-type brake nut is as follows:
relative speed V2 × VA relative speed 2 × VB relative speed
VA relative speed VB relative speed
Therefore, after the synchronous component 350 is added, the two band-type brake nuts can be ensured to be stressed uniformly, the movement speeds are the same, the synchronous band-type brake and the brake opening of the first band-type brake nut 330 and the second band-type brake nut 340 can be ensured, the movement speed of the band-type brake nut relative to the support is reduced by half on the premise that the whole action period is not prolonged, the impact of the band-type brake nut on the pull rod is greatly reduced, the vibration is reduced, the noise generated when the synchronous band-type brake device 300 operates is reduced, and the service life of the synchronous band-type brake device 300 is greatly prolonged.
Similarly, the two-plate injection molding machine with the synchronous band-type brake device 300 is provided with four groups of band-type brake assemblies, as long as the rigidity and the number of the springs 353 are consistent, the four groups of band-type brakes can move at the same speed, theoretically, compared with the condition without the synchronous assembly 350, the VA relative speed (VB relative speed) is reduced by 8 times, the overall action time is not prolonged, the impact of band-type brake nuts on the pull rod is greatly reduced, the vibration of the whole machine is reduced, the noise of the operation of the equipment is reduced, and the service life of parts is greatly prolonged.
The two connecting rods 314 are arranged, the two connecting rods 314 are symmetrically arranged about the central axis of the piston rod 312 of the brake cylinder 311, and the central axis of the guide column 352 coincides with the central axis of the corresponding connecting rod 314, so that the stress of the first brake nut 330 and the stress of the second brake nut 340 are more uniform, and the synchronism of the first brake nut 330 and the second brake nut 340 is further ensured.
Specifically, the guide post 352 is provided with a first through hole extending along the axial direction thereof, and the first through hole of the guide post 352 fixed with the first band-type brake nut 330 is in slidable fit with the connecting rod 314, so that the guiding function is achieved, and the first band-type brake nut 330 can slide more smoothly.
In the middle of this embodiment, for fixed guide post 352, the one end that first band-type brake nut 330 and second band-type brake nut 340 kept away from each other all has set firmly lock nut, and the outer wall of the first end of guide post 352 is equipped with the screw thread section, and screw thread section and lock nut threaded connection set up like this, and the installation of synchronous subassembly 350 of can being convenient for improves the packaging efficiency.
In order to realize the fixed connection between the second nut and the connecting rod 314, the band-type brake driving assembly 310 further includes a fastening screw 315, and the fastening screw 315 passes through the first through hole of the guide post 352 fixed to the second band-type brake nut 340, and then is fixedly connected to the second band-type brake nut 340 and the connecting rod 314 in sequence.
The second through hole that supplies connecting rod 314 to pass is seted up to first band-type brake nut 330, inlays in the second through hole and is equipped with uide bushing 360, but connecting rod 314 and uide bushing 360 centre bore sliding fit set up like this, avoided direct contact between connecting rod 314 and the first band-type brake nut 330 and lead to wearing and tearing first band-type brake nut 330, can prolong first band-type brake nut 330's life.
In order to install the connecting rod 314, a cylinder cover 313 is fixedly arranged on the cylinder body of the contracting brake cylinder 311, a piston rod 312 of the contracting brake cylinder 311 penetrates through the cylinder cover 313, and a first end of the connecting rod 314 is fixedly connected with the cylinder cover 313.
Specifically, the support includes two backup pads 320, and interval and relative setting between two backup pads 320, one of them one end of backup pad 320 is equipped with the third limiting plate 321 perpendicular with backup pad 320, encloses between third limiting plate 321 and the backup pad 320 and closes and form the spout for the other end of backup pad 320 is the free end, is convenient for install first band-type brake nut 330 and second band-type brake nut 340.
For the minimum extreme position when spacing first band-type brake nut 330 and second band-type brake nut 340 are in the band-type brake state, set firmly spacing pin 370 in the spout, for spacing pin 370 is located the middle part position of spout, spacing groove has all been seted up to the one end that first band-type brake nut 330 and second band-type brake nut 340 are close to each other, when first band-type brake nut 330 and second band-type brake nut 340 band-type brake, spacing pin 370 and spacing groove cooperation play spacing effect.
To sum up, the utility model discloses a synchronous band-type brake device 300 has following advantage:
(1) due to the fact that the synchronous brake is achieved, the impact problem caused by asynchronous brake is greatly reduced, failure damage of relevant parts caused by impact is eliminated, and the service life and the reliability of the synchronous brake device 300 are remarkably prolonged.
(2) Due to the adoption of the spring 353 which is easily available in the market and the extremely simple structure of the synchronizing component 350, the manufacturing cost of the synchronizing band-type brake device 300 is greatly reduced, and great cost benefit is brought to the whole equipment.
(3) Due to the buffering effect of the spring 353, the impact degree on the pull rod during brake contracting is greatly reduced, and the damage to the pull rod is avoided.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (10)
1. The synchronous brake device comprises a brake driving component, a support, a first brake nut and a second brake nut, wherein the driving component comprises a brake oil cylinder and a connecting rod, a piston rod of the brake oil cylinder is connected with the first brake nut, the connecting rod is parallel to the piston rod of the brake oil cylinder, a first end of the connecting rod is connected with a cylinder body of the brake oil cylinder, a second end of the connecting rod penetrates through the first brake nut to be connected with the second brake nut, the first brake nut and the connecting rod are in sliding fit, the support is provided with a sliding groove extending along the length direction of the support, the first brake nut and the second brake nut are slidably arranged in the sliding groove, the first brake nut and the second brake nut are respectively provided with a brake groove, and when the first brake nut and the second brake nut are in a brake state, the brake contracting slot of the first brake nut and the brake contracting slot of the second brake nut are encircled to form a brake contracting hole matched with the pull rod, the brake contracting device is characterized by further comprising a synchronizing assembly, at least one group of synchronizing assemblies are arranged at two ends of the support, the synchronizing assembly comprises a first limiting plate, a guide post and a spring, a first end of the first limiting plate is fixed with the support, and a second end of the first limiting plate extends out to an opening position of the sliding slot; the first end of the guide post located at the first end of the support passes corresponding first limiting plate with first band-type brake nut fixed connection, wherein, the guide post with first limiting plate sliding connection, the second end of guide post is equipped with the second limiting plate, the spring housing is located just be located on the guide post between first limiting plate and the second limiting plate, and be located the first end of the guide post in the synchronizing assembly of the second end of support passes corresponding first limiting plate with second band-type brake nut fixed connection.
2. The synchronous band-type brake device according to claim 1, wherein two sets of synchronizing assemblies are provided at both ends of the support, and the two sets of synchronizing assemblies provided at the same end of the support are arranged oppositely.
3. The synchronous brake device according to claim 1, wherein there are two connecting rods, the two connecting rods are symmetrically arranged about a central axis of a piston rod of the brake cylinder, and a central axis of the guide post coincides with a central axis of the corresponding connecting rod.
4. The synchronous brake device according to claim 3, wherein the guide post defines a first through hole extending along an axial direction thereof, and the first through hole of the guide post fixed to the first brake nut is slidably engaged with the connecting rod.
5. The synchronous brake device according to claim 4, wherein the brake driving assembly further comprises a fastening screw, and the fastening screw passes through a first through hole of a guide post fixed with the second brake nut and then is fixedly connected with the second brake nut and the connecting rod in sequence.
6. The synchronous brake device according to claim 1, wherein the first brake nut has a second through hole for the connecting rod to pass through, a guide sleeve is embedded in the second through hole, and the connecting rod is slidably engaged with a central hole of the guide sleeve.
7. The synchronous brake device according to claim 1, wherein a cylinder cover is fixedly arranged on a cylinder body of the brake cylinder, a piston rod of the brake cylinder penetrates through the cylinder cover, and a first end of the connecting rod is fixedly connected with the cylinder cover.
8. The synchronous brake device according to claim 1, wherein the support comprises two support plates, the two support plates are spaced and arranged oppositely, one end of each support plate is provided with a third limiting plate perpendicular to the support plate, and the third limiting plate and the support plate are enclosed to form the sliding groove.
9. The synchronous brake device according to claim 1, wherein a limiting pin is fixedly disposed in the sliding groove, a limiting groove is disposed at each end of the first brake nut and the second brake nut that are close to each other, and the limiting pin is engaged with the limiting groove when the first brake nut and the second brake nut are braked.
10. The two-plate injection molding machine comprises a fixed mold plate, a movable mold plate, a mold moving oil cylinder and a mold locking oil cylinder, and is characterized by further comprising the synchronous contracting brake device according to any one of claims 1 to 9, wherein the support is fixed to one end, close to a piston rod of the mold locking oil cylinder, of a cylinder body of the mold locking oil cylinder, and a central axis of the piston rod of the mold locking oil cylinder is parallel to a central axis of the contracting brake hole and is located on the same horizontal plane.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920715265.8U CN210705880U (en) | 2019-05-17 | 2019-05-17 | Synchronous band-type brake device and two-plate injection molding machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920715265.8U CN210705880U (en) | 2019-05-17 | 2019-05-17 | Synchronous band-type brake device and two-plate injection molding machine |
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| CN210705880U true CN210705880U (en) | 2020-06-09 |
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| CN201920715265.8U Active CN210705880U (en) | 2019-05-17 | 2019-05-17 | Synchronous band-type brake device and two-plate injection molding machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110239047A (en) * | 2019-05-17 | 2019-09-17 | 柳州开宇塑胶机械有限公司 | Synchronous band brake apparatus and double-plate injection moulding machine |
| CN116653243A (en) * | 2023-07-24 | 2023-08-29 | 博创智能装备股份有限公司 | Two-plate intelligent mode locking part based on multi-core control |
-
2019
- 2019-05-17 CN CN201920715265.8U patent/CN210705880U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110239047A (en) * | 2019-05-17 | 2019-09-17 | 柳州开宇塑胶机械有限公司 | Synchronous band brake apparatus and double-plate injection moulding machine |
| CN116653243A (en) * | 2023-07-24 | 2023-08-29 | 博创智能装备股份有限公司 | Two-plate intelligent mode locking part based on multi-core control |
| CN116653243B (en) * | 2023-07-24 | 2023-10-20 | 博创智能装备股份有限公司 | Two-plate intelligent mode locking part based on multi-core control |
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