CN217729629U

CN217729629U - Double-station electric mold opening and closing structure in blow molding machine

Info

Publication number: CN217729629U
Application number: CN202221158468.XU
Authority: CN
Inventors: 卞云杰
Original assignee: Zhangjiagang Yunzhen Technology Co ltd
Current assignee: Zhangjiagang Yunzhen Technology Co ltd
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-11-04
Anticipated expiration: 2032-05-16

Abstract

The utility model discloses an electronic mould structure that opens and shuts in duplex position among blowing machine, include: the frame slides in the frame and is provided with two and moves the die holder, is provided with two mould mechanisms that move respectively at both ends about the frame, all is provided with one on two mould holders and opens and shut the mould mechanism, it includes to open and shut the mould mechanism: the die comprises a front die plate and a rear die plate, wherein a synchronizing mechanism is arranged between the front die plate and the rear die plate, a front crank arm and a rear crank arm are respectively hinged to the front end and the rear end of a die moving seat, the front crank arm is hinged to the front die plate, the rear crank arm is hinged to the rear die plate, a support is connected to the front crank arm, a first servo motor is arranged on the support, a main swing arm is connected to an output shaft of the first servo motor, and a connecting rod group with an adjustable interval is hinged between the main swing arm and the rear crank arm. The utility model discloses can guarantee the compound die precision, quick adjustment die sinking stroke and mode locking stroke, first servo motor forms the biggest mode locking power to preceding template and back template under receiving minimum bearing capacity.

Description

Double-station electric mold opening and closing structure in blow molding machine

Technical Field

The utility model relates to a blowing machine especially relates to the electronic mould structure that opens and shuts in duplex position among the blowing machine.

Background

The blow molding machine is most commonly of a single-station type and a multi-station type, and the multi-station type has multiple double stations, wherein the double stations mean that the blow molding machine comprises two sets of mold opening and closing mechanisms. The mold opening and closing mechanism in the blow molding machine on the market at present is provided with a hydraulic oil cylinder on two templates, and the hydraulic oil cylinder drives two templates simultaneously to realize the mold opening and closing, but this kind of mode has following defect: the hydraulic cylinder directly applies driving force to the template to enable the load of the hydraulic cylinder to be high, after the hydraulic cylinder is used for a long time, the hydraulic cylinder is easy to damage to cause stroke errors, the mold closing precision is reduced, the blow molding quality is affected, the hydraulic cylinder often has leakage, and therefore the environment pollution is caused, and the potential safety hazard is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a simple structure, transfer electronic mould structure that opens and shuts in duplex position among the blowing machine that mould scope is big, long service life, and the compound die precision is high.

In order to achieve the above object, the utility model adopts the following technical scheme: electronic mould structure that opens and shuts in duplex position among the blowing machine includes: the frame is provided with two guide rails in the frame, and it is provided with two mould shifting bases to slide on two guide rails, and both ends are provided with two respectively and can drive the mould shifting mechanism that moves the mould base horizontal slip on the guide rail about the frame, all are provided with one on two mould shifting bases and open and shut the mould mechanism, it includes to open and shut the mould mechanism: the front and rear templates are arranged on the die shifting seat in a front-rear sliding mode, a synchronizing mechanism is arranged between the front template and the rear template, a front crank arm and a rear crank arm are hinged to the front end and the rear end of the die shifting seat respectively, the front crank arm is hinged to the front template through a front connecting plate, the rear crank arm is hinged to the rear template through a rear connecting plate, a support is connected to the front crank arm, a first servo motor is arranged on the support, a main swing arm is connected to an output shaft of the first servo motor, and a connecting rod set with an adjustable interval is hinged between the main swing arm and the rear crank arm.

Further, in the foregoing double-station electric mold opening and closing structure in a blow molding machine, the synchronization mechanism includes: the gear, go up rack and lower rack, set up the sliding tray in moving the die holder, put the fixed gear box that is provided with in the central point of sliding tray, it is provided with the gear to rotate in the gear box, it wears to establish in the gear box that is located the gear top to slide around going up the rack, and mesh mutually with the top of gear, it wears to establish in the gear box that is located the gear below to slide around the lower rack, and mesh mutually with the bottom of gear, be provided with preceding connecting block downwards on the template in the front, preceding connecting block links to each other with last rack, be provided with the back connecting block downwards on the template in the back, back connecting block links to each other with lower rack, be provided with on the back connecting block with last rack around the hole of dodging of aliging.

Further, the electronic mould structure that opens and shuts in duplex position among the aforesaid blowing machine, wherein, the linkage includes: the front end of the front connecting rod is hinged to the main swing arm, an external thread is arranged at the rear end of the front connecting rod, the rear end of the rear connecting rod is hinged to the rear crank arm, an external thread is also arranged at the front end of the rear connecting rod, a forward-rotation internal thread and a reverse-rotation internal thread are respectively arranged at the front end and the rear end of the connecting rod, the forward-rotation internal thread of the connecting rod is in threaded connection with the external thread on the front connecting rod, and the reverse-rotation internal thread of the connecting rod is in threaded connection with the outward thread on the rear connecting rod.

Furthermore, in the double-station electric mold opening and closing structure in the blow molding machine, the support is hinged to the front crank arm, a limiting adjusting part capable of fixing the position of the support is arranged between the front crank arm and the support, the limiting adjusting part is a limiting bolt, a waist-shaped hole is formed in the front crank arm, a connecting hole is formed in the support, the connecting hole in the support is aligned with the waist-shaped hole in the front crank arm, and the limiting bolt penetrates through the aligned waist-shaped hole and the connecting hole and is locked by a nut.

Further, in the foregoing double-station electric mold opening and closing structure in a blow molding machine, the mold moving mechanism includes: second servo motor, shifting die connecting rod and cam, cam rotate and set up in the frame, and second servo motor fixes in the frame, and output shaft and cam key-type connection on the second servo motor have the shifting die connecting rod that articulates on the cam, are provided with articulated seat in the bottom of shifting die seat, and the shifting die connecting rod is articulated mutually with articulated seat.

The utility model has the advantages that: the first servo motor can drive the front template and the rear template to move simultaneously to perform mold opening and closing actions through linkage actions among the bracket, the main swing arm, the connecting rod group, the rear crank arm, the synchronizing mechanism and the front crank arm, so that the mold closing precision between the front template and the rear template is guaranteed; the distance between the front connecting rod and the rear connecting rod is controlled by rotating the connecting rods in the connecting rod group, so that the mold opening stroke and the mold locking stroke between the front template and the rear template can be adjusted in a large range, and the use of molds with different specifications is met; the connecting rods in the connecting rod group can also enable the first servo motor to form the maximum mold locking force on the front mold plate and the rear mold plate under the minimum bearing force, and the service life of the first servo motor can be effectively prolonged.

Drawings

Fig. 1 is a structural schematic diagram of a main view direction of a double-station electric open-close mold structure in the blow molding machine of the present invention.

Fig. 2 is a partial structural schematic diagram of the mold opening and closing mechanism in the left-hand direction in fig. 1.

Fig. 3 is a schematic view of a part of the structure in the top view of fig. 1.

Fig. 4 is a schematic view of a partial three-dimensional structure of a double-station electric mold opening and closing structure in the blow molding machine of the present invention.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and preferred embodiments.

As shown in fig. 1, fig. 2, fig. 3 and fig. 4, the double-station electric mold opening and closing structure in the blow molding machine of the present invention comprises: frame 1 is provided with two guide rails 11 in frame 1, and the slip is provided with two shifting die holders 2 on two guide rails 11, is provided with two shifting die mechanisms that can drive shifting die holder 2 horizontal slip on guide rail 11 respectively at frame 1's left and right sides both ends, shifting die mechanism includes: the mould moving mechanism comprises a second servo motor 12, a mould moving connecting rod 13 and a cam 14, wherein the cam 14 is rotatably arranged on the rack 1, the second servo motor 12 is fixed on the rack 1, an output shaft on the second servo motor 12 is in key connection with the cam 14, the cam 14 is hinged with the mould moving connecting rod 13, the bottom of the mould moving seat 2 is provided with a hinged seat 21, and the mould moving connecting rod 13 is hinged with the hinged seat 21. When the second servo motor 12 drives the cam 14 to rotate, the cam 14 can drive the die moving connecting rod 13 to reciprocate in the left-right direction, and the die moving connecting rod 13 can drive the die moving seat 2 to reciprocate left and right on the rack 1 in the reciprocating process.

All be provided with a mould mechanism that opens and shuts on two die shifting bases 2, mould mechanism that opens and shuts includes: slide the front template 3 and the back template 4 that set up on shifting die holder 2 around, be provided with lazytongs between front template 3 and back template 4, lazytongs includes: the mold moving device comprises a gear 51, an upper rack 52 and a lower rack 53, wherein a sliding groove 22 is formed in a mold moving seat 2, a gear box 5 is fixedly arranged at the center position of the sliding groove 22, the gear 51 is rotatably arranged in the gear box 5, the upper rack 52 is arranged in the gear box 5 above the gear 51 in a front-back sliding mode and meshed with the top of the gear 51, the lower rack 53 is arranged in the gear box 5 below the gear 51 in a front-back sliding mode and meshed with the bottom of the gear 51, a front connecting block 31 is arranged on a front template 3 downwards, the front connecting block 31 is connected with the upper rack 52, a rear connecting block 41 is arranged on a rear template 4 downwards, the rear connecting block 41 is connected with the lower rack 53, and a avoiding hole 411 which is aligned with the upper rack 52 in the front-back mode is formed in the rear connecting block 41.

The front end and the rear end of the mold moving seat 2 are respectively hinged with a front crank arm 32 and a rear crank arm 42, the front crank arm 32 is hinged with the front template 3 through a front connecting plate 33, the rear crank arm 42 is hinged with the rear template 4 through a rear connecting plate 43, the front crank arm 32 is hinged with a support 6, a limiting adjusting part is arranged between the front crank arm 32 and the support 6, the limiting adjusting part is a limiting bolt 61, a waist-shaped hole is arranged on the front crank arm 32, a connecting hole is arranged on the support 6, the connecting hole on the support 6 is aligned with the waist-shaped hole on the front crank arm 32, the limiting bolt 61 is arranged in the aligned waist-shaped hole and the connecting hole in a penetrating mode and locked by a nut, and the support 6 and the front crank arm 32 form a fixed connecting structure through the limiting bolt 61.

Be provided with first servo motor 62 on support 6, be connected with main swing arm 63 on first servo motor 62's output shaft, it has the linkage of adjustable interval to articulate between main swing arm 63 and back crank arm 42, the linkage includes: the front end of the front connecting rod 7 is hinged with the main swing arm 63, an external thread is arranged at the rear end of the front connecting rod 7, the rear end of the rear connecting rod 71 is hinged with the rear crank arm 42, an external thread is also arranged at the front end of the rear connecting rod 71, a forward-rotation internal thread and a backward-rotation internal thread are respectively arranged at the front end and the rear end of the connecting rod 72, the forward-rotation internal thread of the connecting rod 72 is in threaded connection with the external thread on the front connecting rod 7, and the backward-rotation internal thread of the connecting rod 72 is in threaded connection with the outward thread on the rear connecting rod 71.

The working principle of the utility model is as follows: firstly, fixing the molds on a front mold plate 3 and a rear mold plate 4 according to the adjustment strokes of the molds with different specifications, firstly, locking a bracket 6 and a front crank arm 32 in a limiting mode by using a limiting bolt 61, then driving a first servo motor 62, driving a main swing arm 63 to rotate by the first servo motor 62, driving a rear crank arm 42 to rotate around a mold moving seat 2 by the main swing arm 63 through a connecting rod group, driving the rear mold plate 4 to move from back to front on the mold moving seat 2 by the rear crank arm 42 through a lever principle, driving a lower rack 53 to move from back to front by the rear mold plate 4 at the moment, driving the lower rack 53 to rotate by a gear 51 at the moment, driving an upper rack 52 and the front mold plate 3 to move from front to back on the mold moving seat 2 by the rotating gear 51, completing mold closing by the opposite movement of the front mold plate 3 and the rear mold plate 4, then stopping the machine, checking whether the connecting rod group and the main swing arm 63 are on a straight line by a worker, and directly starting blow molding work if the connecting rod group and the front mold plate 3 and the rear mold 4 and the front mold 4 and the connecting rod group and the rear mold 4 are on the straight line; if the linkage is not in line with the main swing arm 63, the stroke needs to be adjusted: the connecting rod 72 in the connecting rod group is rotated, the connecting rod 72 simultaneously drives the front connecting rod 7 and the rear connecting rod 71 to contract through the forward-rotation internal threads and the reverse-rotation internal threads at two ends, in the contraction process, the front connecting rod 7 can drive the output shafts of the main swing arm 63 and the first servo motor 62 to rotate until the main swing arm 63 and the front connecting rod 7 are kept on a straight line, at the moment, the clamping force of the first servo motor 62 between the front template 3 and the rear template 4 is maximum, but the bearing force borne by the first servo motor 62 is minimum.

After the stroke adjustment is finished, the blow molding work can be carried out, in the blow molding process, the left mold moving mechanism is used for driving the left mold moving seat 2 to slide to the central part of the rack 1, so that a mold in the mold opening and closing mechanism on the mold moving seat 2 is butted with a discharge port of a blow molding machine, then the blow molding work is carried out, after the blow molding work is finished, the left mold moving mechanism drives the mold moving seat 2 to drive the mold opening and closing mechanism to reset, the reset mold opening and closing mechanism opens the mold, and a worker takes out a finished product in the mold; when the left mold moving seat 2 is reset to the original position, the right mold moving mechanism immediately drives the right mold moving seat 2 to slide to the central part of the rack 1, so that a mold in the mold opening and closing mechanism on the mold moving seat 2 is butted with a discharge port of a blow molding machine, then blow molding is carried out, and after the blow molding is finished, the right mold moving seat 2 drives the mold opening and closing mechanism to reset to the original position to open a mold and take out a workpiece, and the repeated actions are carried out.

The utility model has the advantages of: the first servo motor can drive the front template and the rear template to simultaneously move to open and close the mold through the linkage action among the bracket, the main swing arm, the connecting rod group, the rear crank arm, the synchronous mechanism and the front crank arm, so that the mold closing precision between the front template and the rear template is guaranteed; the distance between the front connecting rod and the rear connecting rod is controlled by rotating the connecting rods in the connecting rod group, so that the mold opening stroke and the mold locking stroke between the front template and the rear template can be adjusted in a large range, and the use of molds with different specifications is met; the connecting rods in the connecting rod group can also enable the first servo motor to form the maximum mold locking force on the front mold plate and the rear mold plate under the minimum bearing force, and the service life of the first servo motor can be effectively prolonged.

Claims

1. Electronic mould structure that opens and shuts in duplex position among the blowing machine includes: the frame, its characterized in that: be provided with two guide rails in the frame, it is provided with two mould shifting bases to slide on two guide rails, both ends are provided with two respectively and can drive mould shifting base horizontal slip's mould shifting mechanism on the guide rail about the frame, all are provided with one on two mould shifting bases and open and shut mould mechanism, it includes to open and shut mould mechanism: the front template and the rear template are arranged on the die moving seat in a front-back sliding mode, a synchronizing mechanism is arranged between the front template and the rear template, a front crank arm and a rear crank arm are hinged to the front end and the rear end of the die moving seat respectively, the front crank arm is hinged to the front template through a front connecting plate, the rear crank arm is hinged to the rear template through a rear connecting plate, a support is connected to the front crank arm, a first servo motor is arranged on the support, a main swing arm is connected to an output shaft of the first servo motor, and a connecting rod set with an adjustable interval is hinged between the main swing arm and the rear crank arm.

2. The double-station electric mold opening and closing structure in the blow molding machine according to claim 1, characterized in that: the synchronization mechanism includes: the gear, go up rack and lower rack, set up the sliding tray in moving the die holder, put the fixed gear box that is provided with in the central point of sliding tray, it is provided with the gear to rotate in the gear box, it wears to establish in the gear box that is located the gear top to slide around going up the rack, and mesh mutually with the top of gear, it wears to establish in the gear box that is located the gear below to slide around the lower rack, and mesh mutually with the bottom of gear, be provided with preceding connecting block downwards on the template in the front, preceding connecting block links to each other with last rack, be provided with the back connecting block downwards on the template in the back, back connecting block links to each other with lower rack, be provided with on the back connecting block with last rack around the hole of dodging of aliging.

3. The double-station electric mold opening and closing structure in the blow molding machine according to claim 1, characterized in that: the linkage includes: preceding connecting rod, back connecting rod and connecting rod, the front end of preceding connecting rod is articulated mutually with main swing arm, the rear end of connecting rod is provided with the external screw thread in the front, the rear end of back connecting rod is articulated mutually with back crank arm, also be provided with the external screw thread at the front end of back connecting rod, be provided with positive internal thread and backspin internal thread respectively at the front end and the rear end of connecting rod, the positive internal thread of connecting rod and the external screw thread threaded connection on the preceding connecting rod, the backspin internal thread of connecting rod and the past external screw thread threaded connection on the back connecting rod.

4. The double-station electric mold opening and closing structure in the blow molding machine according to claim 1, characterized in that: the support is articulated mutually with the preceding arm that cranks, is provided with the spacing regulating part that can the fixed bolster position between preceding arm and the support of cranking, spacing regulating part is spacing bolt, is provided with waist type hole on the preceding arm that cranks, is provided with the connecting hole on the support, and the connecting hole on the support is aligned with the waist type hole on the preceding arm that cranks, wears to establish in aligned waist type hole and connecting hole at spacing bolt to lock with the nut.

5. The double-station electric mold opening and closing structure in the blow molding machine according to claim 1, characterized in that: the mould moving mechanism comprises: second servo motor, shifting die connecting rod and cam, cam rotate and set up in the frame, and second servo motor fixes in the frame, and output shaft and cam key-type connection on the second servo motor have the shifting die connecting rod that articulates on the cam, are provided with articulated seat in the bottom of shifting die seat, and the shifting die connecting rod is articulated mutually with articulated seat.