Die change system with common drive

Abstract

The present invention relates to the field of power transmission equipment, and specifically refers to a mold changing system with a common driving device, including a mold changing trolley and a fixed device, the mold changing trolley includes a mold changing trolley body, the mold changing trolley body is provided with a mold changing roller mechanism, the fixed device includes a fixed bracket, the fixed bracket is provided with a power roller mechanism, and a power transmission mechanism is provided, the power transmission mechanism includes a driving transmission mechanism and a driven mechanism, the driving transmission mechanism includes a power driving part and a power transmission part, the power driving part drives the roller on the mold changing trolley to rotate through a motor or a hand wheel, the power transmission part transmits the driving force of the power driving part to the driven mechanism, the driven mechanism drives the roller on the fixed device to rotate, and only one motor or no motor is needed to realize the rotation of the roller of the mold changing trolley and the fixed device. The present invention can greatly reduce the number of motors used and reduce the mold production cost, and it is synchronously driven, easy to operate and easy to control.

Description

Technical Field

[0001] The present invention relates to the field of power transmission equipment, in particular to a mold changing system with a common driving device. Background Art

[0002] The processing of existing molds usually involves moving the mold from the mold library to the mold changing trolley, transporting it to the preheating station by the mold changing trolley, and then moving the mold from the preheating station to the mold changing trolley after preheating, and transporting it to the injection molding machine for mold change by the mold changing trolley. With the progress of society, this process has been automated, such as Chinese patent CN109940824A, named "Automatic Mold Handling and Mold Changing System and Method in Unmanned State", which realizes automatic handling, automatic preheating, automatic mold changing and automatic storage of molds. However, the mold changing trolley, mold library, preheating station and injection molding machine all require motor drive during the production process. Common mold changing trolleys, such as patent number CN108358120A, named "Automatic Mold Changing Trolley" or patent number CN20 4338730U, named as a new type of rapid mold change trolley, generally includes a mold change trolley body, the lower end of the mold change trolley body is provided with four universal wheels, the upper end is provided with a mold change frame, and the mold change roller mechanism is provided on the mold change frame. Specifically, the mold change roller mechanism includes a mold change frame, a mold change roller, a roller shaft, a sprocket and a chain. Two or more mold change rollers for moving the mold are arranged side by side on the mold change frame. The mold change roller is fixedly connected to the roller shaft, and a sprocket is fixed on the roller shaft. The roller is driven to rotate by connecting the chain with the gear shaft on the motor. The adjacent rollers are synchronously driven by the sprocket and the chain. The rotation of the roller drives the mold to move to realize mold change. According to actual production needs, the mold change trolley can be a single-station design or a double-station design. The double-station design is equipped with two sets (or The mold changing rollers can be matched with multiple ones as needed to load two sets of molds; the traditional mold library is generally stacked in a single layer and docked with the mold changing trolley. The bracket of the mold library is provided with a power roller mechanism corresponding to the mold changing roller mechanism. The power roller mechanism generally includes a mold frame, a power roller, a roller shaft, a sprocket and a chain. Power rollers are arranged side by side on the mold frame. The rollers are driven by a motor to rotate to realize the movement of the mold from the mold library to the mold changing trolley; the common preheating station, such as the one described in patent number CN109940824A, generally includes a bracket, and the upper end face of the bracket is provided with parallel guide rails, guide rollers and quick insertion devices. The guide rollers are driven by a motor drive device. When the mold is in place, the preheating station control device instructs the motor drive device to move the mold to the upper end of the preheating station. The mold changing frame of the injection molding machine is provided with a power roller mechanism, and the reduction motor drives the roller to rotate through a chain to realize the mold replacement; from the above, it can be seen that first, the rotation of the rollers on the mold changing trolley, mold library, preheating station and each frame of the injection molding machine requires motor drive to realize the movement and replacement of the mold, and the number of motors is large, the cost is high, and the energy consumption is high; second, the roller driving devices on the mold changing trolley, mold library, preheating station and injection molding machine are all driven by different motors, and the rotation speed of the rollers is not easy to synchronize, and the control is difficult. Summary of the invention

[0003] The purpose of the present invention is to solve the deficiencies of the prior art and to provide a mold changing system with a common drive device, which has the advantages of small motor usage, low cost, low energy consumption, convenient and easy control of synchronous drive, and low difficulty in on-site construction.

[0004] A mold changing system with a common driving device comprises a mold changing trolley and a fixing device, wherein the mold changing trolley comprises a mold changing trolley body, a mold changing roller mechanism is arranged on the mold changing trolley body, the fixing device comprises a fixing bracket, a power roller mechanism is arranged on the fixing bracket, and the characteristic is that a power transmission mechanism is provided, the power transmission mechanism comprises a driving transmission mechanism and a driven mechanism, the driving transmission mechanism is arranged on the mold changing trolley, the driven mechanism is arranged on the fixing device, the driven mechanism is connected and driven synchronously via the driving transmission mechanism, the driving transmission mechanism comprises a power driving part and a power transmission part, the power driving part comprises a driving gear fixing plate, a driving motor, a motor gear, a transmission gear, a driving transmission sleeve, a first gear, a second gear, a connecting A connecting shaft, a driving sprocket and a driving chain, a power transmission part is provided on one side of the driving motor, and the power transmission part includes an electric push rod, a steel ball, a screw, a gear transmission shaft, a limit pin and a positioning pin. The mold changing car body is located at the lower end of the mold changing roller mechanism and a supporting beam is provided at intervals. The two ends of the supporting beam are respectively fixedly connected to the mold changing car body. A driving gear fixing plate is provided on the supporting beam. The lower end of the driving gear fixing plate is fixedly connected to the supporting beam, and a driving motor and an electric push rod are arranged in parallel at the upper end. The driving motor is connected to a power source, and the driving motor is fixedly connected to the driving gear fixing plate via a motor bracket. The output shaft of the driving motor is fixedly connected to the motor gear, and the motor gear is meshed with the transmission gear. The transmission gear is fixed to the active transmission sleeve The driving transmission sleeve is connected with the driving gear fixing plate through a bearing and a bearing seat. The driving transmission sleeve is provided with a first gear in front of the transmission gear and an electric push rod is provided at the rear. The first gear is fixedly connected with the driving transmission sleeve, the first gear is meshed with the second gear, the second gear is fixedly connected with one end of the connecting shaft, the connecting shaft is connected with the driving gear fixing plate through a bearing and a bearing seat, and a driving sprocket is provided at the other end of the connecting shaft. The driving sprocket is fixedly connected with the connecting shaft, and the driving sprocket is linked to the sprocket of the roller shaft on the mold changing roller mechanism through a driving chain, so as to facilitate the rotation of the motor gear by the driving motor, and the motor gear transmits power to the transmission gear by meshing with the transmission gear, and the rotation of the transmission gear drives the driving transmission sleeve to rotate The driving transmission sleeve drives the first gear thereon to rotate, and the first gear transmits power to the second gear through meshing, and the second gear drives the connecting shaft to rotate, and the connecting shaft drives the driving sprocket to rotate, and the driving sprocket is linked to the sprocket on the roller shaft of one or two rollers on the mold changing roller mechanism through the driving chain, thereby driving the roller to rotate, and the adjacent mold changing rollers are synchronized through the sprocket and the chain. The electric push rod is connected to the power supply, and the electric push rod is fixedly connected to the driving gear fixing plate through the electric push rod bracket. The front end of the push rod of the electric push rod is provided with a transmission shaft insertion hole, and the push rod is provided with an annular upper steel ball groove in the transmission shaft insertion hole, and a steel ball hole connected with the upper steel ball groove is provided on the outer wall of the push rod, and an annular lower steel ball groove is provided at the rear end of the gear transmission shaft.The gear transmission shaft is inserted into the transmission shaft insertion hole of the electric push rod, and the steel ball enters between the upper steel ball groove and the lower steel ball groove through the steel ball hole and is locked with screws to connect the gear transmission shaft with the electric push rod, so as to facilitate the axial movement of the gear transmission shaft in the active transmission sleeve through the electric push rod. At the same time, the gear transmission shaft can rotate to transmit power. A driven mechanism is provided in front of the gear transmission shaft, and positioning pins are evenly distributed radially on the front end of the gear transmission shaft, and limit pins are evenly distributed radially on the middle surface of the gear transmission shaft. A limit pin groove matching the limit pin is provided on the outer wall of the active transmission sleeve, and the lower end of the limit pin is fixedly connected to the gear transmission shaft, and the upper end passes through the limit pin groove, and the gear transmission shaft is limited by the limit pin groove to connect the gear transmission shaft to the active transmission. The sleeve is fixed circumferentially to facilitate the gear transmission shaft to rotate with the active transmission sleeve, and at the same time, the limit pin groove allows the gear transmission shaft to move axially in the active transmission sleeve. The driven mechanism includes a driven gear fixing plate, a driven transmission sleeve, a third gear, a fourth gear, a fixed shaft, a fixed sprocket and a fixed chain. The fixed bracket is located at the lower end of the power roller mechanism and is provided with a fixed beam at intervals. The two ends of the fixed beam are respectively fixedly connected to the fixed bracket. A driven gear fixing plate is provided on the fixed beam. The lower end of the driven gear fixing plate is fixedly connected to the fixed beam. A driven transmission sleeve, a third gear, a fourth gear and a fixed shaft are provided above the driven gear fixing plate. The center line of the driven transmission sleeve is aligned with the active transmission sleeve. The center lines are on the same horizontal line, and one end of the driven transmission sleeve connected to the gear transmission shaft is provided with an open positioning pin groove matched with the positioning pin. The gear transmission shaft moves axially forward under the push of the electric push rod, and the gear transmission shaft is embedded in the driven transmission sleeve. The positioning pin is limited by the open positioning pin groove to fix the gear transmission shaft and the driven transmission sleeve circumferentially, so that the driven transmission sleeve can rotate with the gear transmission shaft. The driven transmission sleeve is connected to the driven gear fixing plate through a bearing and a bearing seat. A third gear is provided on the transmission sleeve, and the third gear is meshed with a fourth gear. The fourth gear is fixedly connected to one end of the fixed shaft, and a fixed sprocket is provided at the other end of the fixed shaft. The fixed shaft is connected to the driven gear fixing plate through a bearing and a bearing seat. The fixed sprocket is connected to the driven gear fixing plate, and the fixed sprocket is fixedly connected to the fixed shaft. The fixed sprocket is linked to the sprocket of the roller shaft on the power roller mechanism through a fixed chain, so that the driven transmission sleeve drives the third gear to rotate. The third gear is meshed with the fourth gear to drive the fourth gear to rotate. The fourth gear drives the fixed sprocket to rotate through the fixed shaft. The fixed sprocket is linked to the sprockets on one or two roller shafts of the power roller mechanism on the fixed device through a chain. The adjacent rollers on the fixed device achieve synchronous rotation through the sprocket and chain, thereby transmitting power from the mold changing trolley to the fixed device. Only one motor is needed to drive the rollers on the mold changing trolley and the fixed device, which greatly reduces production costs and electric energy.

[0005] The fixed equipment described in the present invention is an injection molding machine or a mold library or a preheating station, which is conducive to transmitting power to the injection molding machine or the mold library or the preheating station through a power transmission mechanism, so that the injection molding machine or the mold library or the preheating station does not need to install a motor separately, which greatly reduces the number of motors, reduces costs, and saves electricity.

[0006] This application can also be implemented through the following solutions:

[0007] A mold changing system with a common driving device comprises a mold changing trolley and a fixing device, wherein the mold changing trolley comprises a mold changing trolley body, a mold changing roller mechanism is arranged on the mold changing trolley body, the fixing device comprises a fixing bracket, a power roller mechanism is arranged on the fixing bracket, and the characteristic is that a power transmission mechanism is provided, the power transmission mechanism comprises a driving transmission mechanism and a driven mechanism, the driving transmission mechanism is arranged on the mold changing trolley, the driven mechanism is arranged on the fixing device, the driven mechanism is connected and driven synchronously via the driving transmission mechanism, the driving transmission mechanism comprises a power driving part and a power transmission part, the power driving part comprises a driving gear fixing plate, a driving motor, a motor gear, a transmission gear, a driving transmission shaft, a first gear, a second gear, a connecting shaft , driving sprocket and driving chain, a power transmission part is provided on one side of the driving motor, and the power transmission part includes an electric push rod, a shift fork, a shaft bearing, a driving transmission sleeve, and a first cylindrical pin. The mold changing vehicle body is located at the lower end of the mold changing roller mechanism and a supporting beam is provided at intervals. Both ends of the supporting beam are respectively fixedly connected to the mold changing vehicle body. A driving gear fixing plate is provided on the supporting beam. The lower end of the driving gear fixing plate is fixedly connected to the supporting beam, and a driving motor and an electric push rod are arranged in parallel on the upper end. The driving motor is connected to a power source, and the driving motor is fixedly connected to the driving gear fixing plate via a motor bracket. The output shaft of the driving motor is fixedly connected to the motor gear, and the motor gear is meshed with the transmission gear. The transmission gear is fixedly connected to the rear end of the driving transmission shaft The front end surface of the driving transmission shaft is radially evenly provided with first cylindrical pins, the front end of the driving transmission shaft is sleeved with a driving transmission sleeve, the driving transmission shaft is provided with a first gear in front of the transmission gear, and an electric push rod is provided at the rear, the driving transmission shaft is connected to the active gear fixing plate via a bearing and a bearing seat, the first gear is fixedly connected to the driving transmission shaft, the first gear is meshed with the second gear, the second gear is fixedly connected to one end of the connecting shaft, the connecting shaft is connected to the active gear fixing plate via a bearing and a bearing seat, a driving sprocket is provided at the other end of the connecting shaft, the driving sprocket is fixedly connected to the connecting shaft, and the driving sprocket is linked to the sprocket of the roller shaft on the mold changing roller mechanism via a driving chain, so as to drive the motor gear to rotate through the driving motor, and the motor The gear transmits power to the transmission gear by meshing with the transmission gear. The rotation of the transmission gear drives the driving transmission shaft to rotate, and the driving transmission shaft drives the first gear thereon to rotate. The first gear transmits power to the second gear by meshing. The second gear drives the connecting shaft to rotate. The connecting shaft drives the driving sprocket to rotate. The driving sprocket is linked to the sprocket on one or two roller shafts in the mold changing roller mechanism through a driving chain, thereby driving the roller to rotate. The adjacent mold changing rollers are synchronized by the sprocket and the chain. The inner wall of the driving transmission sleeve is radially evenly provided with cylindrical pin grooves. The driving transmission sleeve is sleeved on the driving transmission shaft and is circumferentially fixedly connected through the first cylindrical pin and the cylindrical pin groove, so that the driving transmission sleeve can move axially on the driving transmission shaft and rotate with the driving transmission shaft.The rear end surface of the driving transmission sleeve is provided with an annular groove, the electric push rod is connected to the power supply, the electric push rod is fixedly connected to the driving gear fixing plate via the electric push rod bracket, the front end of the electric push rod is fixedly connected to the shift fork, the inner wall of the shift fork is evenly provided with a belt shaft bearing, one end of the belt shaft on the belt shaft bearing is fixedly connected to the shift fork, one end of the bearing on the belt shaft bearing is embedded in the annular groove of the driving transmission sleeve to slide the belt shaft bearing and the driving transmission sleeve, so as to facilitate pushing the shift fork through the electric push rod, and the shift fork drives the driving transmission sleeve to move axially along the driving transmission shaft, and a driven mechanism is provided in front of the driving transmission sleeve, and the driven mechanism includes a driven gear fixing plate and a driven transmission shaft , a third gear, a fourth gear, a fixed shaft, a fixed sprocket and a fixed chain, the fixed bracket is located at the lower end of the power roller mechanism and is spaced apart with a fixed beam, both ends of the fixed beam are respectively fixedly connected to the fixed bracket, a driven gear fixing plate is provided on the fixed beam, the lower end of the driven gear fixing plate is fixedly connected to the fixed beam, a driven transmission shaft, a third gear, a fourth gear and a fixed shaft are provided above the driven gear fixing plate, the center line of the driven transmission shaft is on the same horizontal line as the center line of the driving transmission shaft, a second cylindrical pin is evenly distributed radially on the surface of one end of the driven transmission shaft that is butted against the driving transmission sleeve, and the driving transmission sleeve is moved forward and sleeved on the driven transmission shaft The upper part is connected by a second cylindrical pin and a cylindrical pin groove, so as to facilitate the axial movement of the driving transmission sleeve under the action of the electric push rod. The driving transmission sleeve is sleeved on the driven transmission shaft, and the second cylindrical pin enters the cylindrical pin groove. When the driving transmission sleeve rotates, because the second cylindrical pin and the cylindrical pin groove cooperate, the driven transmission shaft can rotate with the driving transmission sleeve. The driven transmission shaft is connected to the driven gear fixing plate through a bearing and a bearing seat. The driven transmission shaft is provided with a third gear, and the third gear is meshed with the fourth gear. The fourth gear is fixedly connected to one end of the fixed shaft. A fixed sprocket is provided at the other end of the fixed shaft. The fixed shaft is connected to the driven gear fixing plate through a bearing and a bearing seat. The fixed sprocket is fixedly connected to the fixed shaft, and the fixed sprocket is linked to the sprocket of the roller shaft on the power roller mechanism through a fixed chain, so that the driven transmission shaft drives the third gear to rotate, the third gear is meshed with the fourth gear, and drives the fourth gear to rotate, and the fourth gear drives the fixed sprocket to rotate through the fixed shaft, and the fixed sprocket is linked to the sprockets on one or two roller shafts of the power roller mechanism on the fixed device through a chain, and the adjacent rollers on the fixed device achieve synchronous rotation through the sprocket and the chain, thereby transmitting power from the mold changing trolley to the fixed device, and only one motor is needed to drive the rollers on the mold changing trolley and the fixed device, which greatly reduces production costs and electric energy.

[0008] The fixed equipment described in the present invention is an injection molding machine or a mold library or a preheating station, which is conducive to transmitting power to the injection molding machine or the mold library or the preheating station through a power transmission mechanism, so that the injection molding machine or the mold library or the preheating station does not need to install a motor separately, which greatly reduces the number of motors, reduces costs, and saves electricity.

[0009] The bearing seat at the lower end of the driving transmission shaft of the present invention is provided with a push rod through hole, and the electric push rod passes through the bearing seat and is connected to the bearing seat via an oil-free bushing, so as to provide supporting force for the push rod through the bearing seat, and at the same time, reduce the friction between the electric push rod and the bearing seat through the oil-free bushing.

[0010] This application can also be implemented through the following solutions:

[0011] A mold changing system with a common driving device comprises a mold changing trolley and a fixing device, the mold changing trolley comprises a mold changing trolley body, the mold changing trolley body is provided with a mold changing roller mechanism, the fixing device comprises a fixing bracket, the fixing bracket is provided with a power roller mechanism, characterized in that: a power transmission mechanism is provided, the power transmission mechanism comprises a driving transmission mechanism and a driven mechanism, the driving transmission mechanism is arranged on the mold changing trolley, the driven mechanism is arranged on the fixing device, the driven mechanism is connected and driven synchronously via the driving transmission mechanism, the driving transmission mechanism comprises an active worm gear, a support plate, an active support fixing plate, an active worm support, an active worm sleeve, an oil-free bushing, a hand wheel, a worm transmission shaft, a first fixed pin, a second fixed pin and a third fixed pin, the mold changing trolley body is provided with a mold changing roller mechanism, the fixing device comprises a fixing bracket, a power roller mechanism is provided on the fixing bracket ... An active worm gear is provided at one end of each roller shaft on the mold roller mechanism, and the active worm gear is fixedly connected to the roller shaft, and an active worm sleeve is provided at the lower end of the active worm gear. A support plate is provided on the mold changing car body below the mold changing roller mechanism, and both ends of the support plate are respectively fixedly connected to the mold changing car body, and an active support fixing plate is provided at the upper end of the support plate, and the lower end of the active support fixing plate is fixedly connected to the support plate, and active worm supports are arranged at intervals on the active support fixing plate, and the lower end of the active worm support is fixedly connected to the active support fixing plate, and a worm sleeve hole is provided on the active worm support, and the active worm sleeve is connected to the active worm support via an oil-free bushing, and spiral teeth meshing with the active worm gear are arranged at intervals on the outer wall of the active worm sleeve to facilitate the meshing of the active worm sleeve and the active worm gear. Transmission, the active worm sleeve is provided with a driven mechanism in front, and a hand wheel is provided at the rear, a worm transmission shaft is provided in the active worm sleeve, a first fixing pin is evenly distributed radially at the front end of the worm transmission shaft, and a second fixing pin is evenly distributed radially at the rear end, and a third fixing pin is evenly distributed radially at the middle part of the worm transmission shaft, a third pin groove matching with the third fixing pin is provided on the active worm sleeve, and a second open pin groove matching with the second cylindrical pin is provided at the rear end of the active worm sleeve, one end of the third fixing pin is fixedly connected to the worm transmission shaft, and the other end matches with the third pin groove, one end of the second fixing pin is fixedly connected to the worm transmission shaft, and the other end matches with the second open pin groove to fix the worm transmission shaft and the active worm sleeve circumferentially, and the rear end of the worm transmission shaft passes through the active worm The sleeve is fixedly connected with the hand to facilitate manually pushing the hand wheel. Through the second open pin groove and the third pin groove, the active worm gear shaft can move axially in the active worm sleeve. Through the third fixed pin and the third pin groove, and the second fixed pin and the second open pin groove, when the hand wheel is turned, the hand wheel drives the worm transmission shaft to rotate, and the active worm sleeve can rotate with the worm transmission shaft. The upper end of the active worm sleeve is meshed with the active worm gear on the mold changing roller mechanism, which can drive the active worm gear to rotate, and then drive the mold changing roller to rotate, so as to realize the movement and replacement of the mold. The driven mechanism includes a driven worm gear, a fixed plate, a driven support fixed plate, a driven worm support, and a driven worm sleeve. A driven worm gear is provided at one end of each roller shaft on the power roller mechanism, and the driven worm gear is fixedly connected to the roller shaft.A driven worm sleeve is provided at the lower end of the driven worm wheel, a fixed plate is provided on the fixed bracket below the power roller mechanism, both ends of the fixed plate are fixedly connected to the fixed bracket respectively, a driven support fixing plate is provided at the upper end of the fixed plate, the lower end of the driven support fixing plate is fixedly connected to the fixed plate, a driven worm support is arranged at intervals on the driven support fixing plate, the lower end of the driven worm support is fixedly connected to the driven support fixing plate, a worm sleeve hole is provided on the driven worm support, the driven worm sleeve is connected to the driven worm support via an oil-free bushing, and spiral teeth meshing with the driven worm wheel are arranged at intervals on the outer wall of the driven worm sleeve, so as to facilitate the meshing transmission of the driven worm sleeve and the driven worm wheel. The center line of the driven worm sleeve and the center line of the active worm sleeve are on the same horizontal line. The outer wall of one end of the driven worm sleeve that is connected to the active worm sleeve is provided with a first open pin groove. When the worm transmission shaft moves forward toward the driven mechanism under the drive of the hand wheel, the worm transmission shaft enters the driven worm sleeve. The first fixed pin on the worm transmission shaft cooperates with the first open pin groove to fix the worm transmission shaft and the driven worm sleeve circumferentially, so that the driven worm sleeve can rotate with the worm transmission shaft. The helical teeth on the driven worm sleeve mesh with the driven worm wheel, thereby driving the driven worm wheel to rotate, and the roller on the power roller mechanism also rotates accordingly, realizing the synchronous drive of the mold changing trolley and the fixed equipment.

[0012] The fixed equipment described in the present invention is an injection molding machine, a mold library or a preheating station, so as to facilitate the synchronous driving of the mold changing trolley and the fixed equipment by manually turning the hand wheel. At the same time, the mold changing trolley, the injection molding machine, the mold library or the preheating station does not need to install a motor separately, which greatly reduces the number of motors, reduces costs and saves energy consumption.

[0013] This application can also be implemented through the following solutions:

[0014] A mold changing system with a common driving device comprises a mold changing trolley, a fixing device I and a fixing device II, wherein the mold changing trolley comprises a mold changing trolley body, the mold changing trolley body is provided with a mold changing roller mechanism, the fixing device I comprises a fixing bracket, the fixing bracket is provided with a power roller mechanism I, the fixing device II comprises a mounting bracket, the mounting bracket is provided with a power roller mechanism II, and is characterized in that a power transmission mechanism is provided, the power transmission mechanism comprises a driving transmission mechanism, a driven mechanism I and a driven mechanism II, the driving transmission mechanism is provided on the mold changing trolley, the driven mechanism I is provided on the fixing device I, and the The driven mechanism II is arranged on the fixed device II, and the driven mechanism I and the driven mechanism II are respectively connected and driven synchronously through the driving transmission mechanism. The driving transmission mechanism includes a power driving part and a bidirectional power transmission part. The power driving part includes a driving gear fixing plate, a driving motor, a motor gear, a transmission gear, a driving transmission sleeve, a first gear, a second gear, a connecting shaft, a driving sprocket and a driving chain. A bidirectional power transmission part is arranged on one side of the driving motor, and the bidirectional power transmission part includes an electric push rod, a bidirectional transmission shaft, a reversing joint, a support sleeve, a front positioning pin, a rear positioning pin, a limit pin, a steel ball and a bolt.

[0015] The mold changing car body is located at the lower end of the mold changing roller mechanism and is provided with supporting beams at intervals. Both ends of the supporting beams are respectively fixedly connected to the mold changing car body. A driving gear fixing plate is provided on the supporting beam. The lower end of the driving gear fixing plate is fixedly connected to the supporting beam, and a driving motor, a two-way transmission shaft and an electric push rod are arranged in parallel at the upper end. The driving motor is connected to a power source, and the driving motor is fixedly connected to the driving gear fixing plate via a motor bracket. The output shaft of the driving motor is fixedly connected to the motor gear, and the motor gear is meshed with the transmission gear. The transmission gear is fixedly connected to the active transmission sleeve, and the active transmission sleeve is connected to the active gear fixing plate via a bearing and a bearing seat. The active transmission sleeve is provided with a first gear in front of the transmission gear. The transmission sleeve is fixedly connected, the first gear is meshed with the second gear, the second gear is fixedly connected to one end of the connecting shaft, the connecting shaft is connected to the active gear fixing plate via a bearing and a bearing seat, and a driving sprocket is provided at the other end of the connecting shaft, the driving sprocket is fixedly connected to the connecting shaft, and the driving sprocket is linked to the sprocket of the roller shaft on the mold changing roller mechanism via a driving chain, so as to facilitate the rotation of the motor gear by the driving motor, the motor gear transmits power to the transmission gear by meshing with the transmission gear, the rotation of the transmission gear drives the active transmission sleeve to rotate, the active transmission sleeve drives the first gear thereon to rotate, the first gear transmits power to the second gear by meshing, the second gear drives the connecting shaft to rotate, the connecting shaft drives the driving sprocket to rotate, and the driving sprocket is driven by the driving chain The sprocket on the roller shaft in the roller mechanism of the dynamic mold-changing trolley rotates, thereby driving the roller to rotate. The adjacent mold-changing rollers are rotated synchronously through the sprocket and chain. The two-way transmission shaft is sleeved with an active transmission sleeve, a reversing joint and a support sleeve from front to back. The front end of the two-way transmission shaft is radially evenly provided with front locating pins, and the two-way transmission shaft is located in the active transmission sleeve and is radially evenly provided with limit pins. The two-way transmission shaft is located in the reversing joint and is provided with an annular steel ball groove. The rear end of the two-way transmission shaft passing through the support sleeve is radially evenly provided with rear locating pins, and the active transmission sleeve is provided with a limit pin groove that matches the limit pin. The active transmission sleeve passes through the limit pin groove and is circumferentially fixedly connected with the two-way transmission shaft, so as to facilitate the two-way gear shaft to rotate with the active transmission sleeve. The joint comprises a left reversing joint and a right reversing joint, wherein the left reversing joint and the right reversing joint are respectively provided with a semicircular groove, wherein the semicircular groove of the left reversing joint or the right reversing joint is provided with a semi-annular groove, wherein the left reversing joint and the right reversing joint relatively wrap the bidirectional transmission shaft, wherein the semi-annular groove of the left reversing joint and the right reversing joint is opposite to the annular steel ball groove on the bidirectional transmission shaft and after being filled with steel balls, the left reversing joint and the right reversing joint are connected to the bidirectional transmission shaft by bolt locking, so that the bidirectional transmission shaft can move with the reversing joint, and at the same time, the bidirectional transmission shaft can rotate through the annular groove formed by the steel balls, the left reversing joint and the right reversing joint and the annular steel ball groove on the bidirectional transmission shaft, an electric push rod is provided on one side of the left reversing joint, wherein the electric push rod and the bidirectional transmission shaft are parallel to each other, and the electric push rod is connected to a power supply,A threaded hole is provided at the front end of the electric push rod, and the bolt passes through the electric push rod. One end of the bolt is fixedly connected to the electric push rod through a nut, and the other end is fixedly connected to the left reversing joint through a nut, so that after the electric push rod is started, the extension and retraction of the electric push rod can drive the reversing joint forward and backward. The support sleeve is connected to the driving gear fixing plate through a bearing and a bearing seat. The two-way transmission shaft passes through the support sleeve and is slidably connected to the support sleeve, so as to provide support for the two-way transmission shaft through the support sleeve. At the same time, the two-way transmission shaft can rotate. A driven mechanism I is provided in front of the two-way transmission shaft, and a driven mechanism II is provided at the rear. The driven mechanism I includes a driven gear fixing The fixed bracket is located at the lower end of the power roller mechanism I and is provided with a fixed beam at intervals. The two ends of the fixed beam are respectively fixedly connected to the fixed bracket. A driven gear fixing plate is provided on the fixed beam. The lower end of the driven gear fixing plate is fixedly connected to the fixed beam. A driven transmission sleeve, a third gear, a fourth gear and a fixed shaft are provided above the driven gear fixing plate. The center line of the driven transmission sleeve is on the same horizontal line as the center line of the active transmission sleeve. The end of the driven transmission sleeve connected to the two-way transmission shaft is provided with an opening positioning pin matched with a front positioning pin. Pin groove, the two-way transmission shaft moves axially forward under the push of the electric push rod, the two-way transmission shaft is embedded in the driven transmission sleeve, the front locating pin cooperates with the open locating pin groove to fix the two-way transmission shaft and the driven transmission sleeve circumferentially, so that the driven transmission sleeve can rotate with the two-way transmission shaft, the driven transmission sleeve is connected to the driven gear fixing plate through the bearing and the bearing seat, the transmission sleeve is provided with a third gear, the third gear is meshed with the fourth gear, the fourth gear is fixedly connected to one end of the fixed shaft, the other end of the fixed shaft is provided with a fixed sprocket, the fixed shaft is connected to the driven gear fixing plate through the bearing and the bearing seat, the fixed sprocket is connected to the fixed shaft The fixed connection is that the fixed sprocket is linked to the sprocket of the roller shaft on the power roller mechanism Ⅰ through a fixed chain, so that the driven transmission sleeve drives the third gear to rotate, the third gear is meshed with the fourth gear, and drives the fourth gear to rotate. The fourth gear drives the fixed sprocket to rotate through the fixed shaft. The fixed sprocket is linked to the sprocket of the roller shaft on one or two fixed equipment Ⅰ power roller mechanism Ⅰ through a chain. The adjacent rollers on the fixed equipment Ⅰ realize synchronous rotation through the sprocket and chain, thereby transmitting power from the mold changing trolley to the fixed equipment Ⅰ. The drive of the mold changing trolley and the rollers on the fixed equipment Ⅰ only requires one motor, which greatly reduces production costs and electric energy.

[0016] The driven mechanism II includes a reverse gear fixing plate, a reverse transmission sleeve, a fifth gear, a sixth gear, a mounting shaft, a mounting sprocket and a mounting chain. The mounting bracket is located at the lower end of the power roller mechanism II and is spaced apart from a mounting beam. Both ends of the mounting beam are fixedly connected to the mounting bracket respectively. A reverse gear fixing plate is provided on the mounting beam. The lower end of the reverse gear fixing plate is fixedly connected to the mounting beam. A reverse transmission sleeve, a fifth gear, a sixth gear and a mounting shaft are provided above the reverse gear fixing plate. The center line of the reverse transmission sleeve is on the same horizontal line as the center line of the active transmission sleeve. An open pin groove matching with a rear locating pin is provided at one end of the reverse transmission sleeve connected to the bidirectional transmission shaft. The bidirectional transmission shaft moves axially backward under the action of the electric push rod, and the bidirectional transmission shaft is embedded in the reverse transmission sleeve. The rear locating pin matches with the open pin groove to fix the bidirectional transmission shaft and the reverse transmission sleeve circumferentially, so that the reverse transmission sleeve can rotate with the bidirectional transmission shaft. The reverse transmission The sleeve is connected to the reverse gear fixing plate through a bearing and a bearing seat, and the reverse transmission sleeve is provided with a fifth gear, and the fifth gear is meshed with the sixth gear. The sixth gear is fixedly connected to one end of the mounting shaft, and the other end of the mounting shaft is provided with a mounting sprocket. The mounting shaft is connected to the reverse gear fixing plate through a bearing and a bearing seat, and the mounting sprocket is fixedly connected to the mounting shaft. The mounting sprocket is linked to the sprocket of the roller shaft on the power roller mechanism II through the mounting chain, so that the reverse transmission sleeve drives the fifth gear to rotate, the fifth gear is meshed with the sixth gear, and drives the sixth gear to rotate. The sixth gear drives the mounting sprocket to rotate through the mounting shaft, and the mounting sprocket is linked to the roller sprockets on one or two power roller mechanisms II through the chain. The adjacent rollers on the fixed device II are synchronously rotated through the sprocket and the chain. Thus, power is transmitted from the mold changing trolley to the fixed device II. Only one motor is needed to drive the rollers on the mold changing trolley and the fixed device II, which greatly reduces production costs and electric energy.

[0017] The fixed device I of the present invention is an injection molding machine or a mold library or a preheating station, and the fixed device II is an injection molding machine or a mold library or a preheating station, so as to facilitate the transmission of power to the injection molding machine or the mold library or the preheating station through a power transmission mechanism, so that the injection molding machine or the mold library or the preheating station does not need to install a motor separately, which greatly reduces the number of motors, reduces costs, and saves electricity.

[0018] Due to the adoption of the above structure, the present invention has the advantages of less motor usage, low cost, less energy consumption, convenient and easy control of synchronous drive, and less difficulty in on-site construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of embodiment 1 of the present invention.

[0020] Figure 2 It is a schematic structural diagram of Embodiment 1 of the present invention in which part of the mold changing roller mechanism and the power roller mechanism are removed.

[0021] Figure 3 It is a structural schematic diagram of the power transmission mechanism in Example 1 of the present invention.

[0022] Figure 4 It is a schematic structural diagram of the power transmission mechanism in Example 1 of the present invention without the sprocket.

[0023] Figure 5 The present invention Figure 4 Partial cross-sectional view.

[0024] Figure 6 It is a schematic structural diagram of the mold changing trolley in Example 1 of the present invention.

[0025] Figure 7 It is a schematic diagram of the structure of the fixing device in Example 1 of the present invention.

[0026] Figure 8 It is a schematic diagram of the structure of embodiment 2 of the present invention.

[0027] Fig. 9 It is a schematic structural diagram of the power transmission mechanism of Example 2 of the present invention.

[0028] Fig.10 It is a schematic structural diagram of the power transmission mechanism in Example 2 of the present invention without the chain.

[0029] Fig.11 The present invention Fig.10 Partial cross-sectional view.

[0030] Fig.12 It is a schematic diagram of the structure in which the driving transmission mechanism and the driven mechanism are separated in Example 2 of the present invention.

[0031] Fig.13 It is a schematic structural diagram of the mold changing trolley in Example 2 of the present invention.

[0032] Fig.14 It is a structural diagram of embodiment 3 of the present invention.

[0033] Fig.15 It is a schematic diagram of the power transmission structure between the mold changing trolley and the fixing device I in Example 3 of the present invention.

[0034] Fig.16 The present invention Fig.15 The schematic diagram of the structure without the mold changing car body and the fixing bracket.

[0035] Fig.17 The present invention Fig.16 Schematic diagram of the structure without the chain.

[0036] Fig.18 The present invention Fig.17Partial cross-sectional view.

[0037] Fig.19 It is a schematic diagram of the power transmission structure between the mold changing trolley and the fixed device II in Example 3 of the present invention.

[0038] Fig. 20 The present invention Fig.19 The schematic diagram of the structure without the mold changing car body and the fixing bracket.

[0039] Fig.21 The present invention Fig. 20 Schematic diagram of the structure without the chain.

[0040] Fig. 22 The present invention Fig.21 Partial cross-sectional view.

[0041] Fig.23 It is a structural diagram of embodiment 4 of the present invention.

[0042] Fig.24 The present invention Fig.23 Left view of .

[0043] Fig.25 The present invention Fig.24 Middle AA section view.

[0044] Fig.26 The present invention Fig.23 The schematic diagram of the structure without the mold changing car body and the fixing bracket.

[0045] Fig. 27 The present invention Fig.26 Front section view of . DETAILED DESCRIPTION

[0046] The present invention is described below in conjunction with the accompanying drawings and embodiments.

[0047] Example 1

[0048] A mold changing system with a common driving device comprises a mold changing trolley 1 and a fixing device 2, wherein the mold changing trolley 1 comprises a mold changing trolley body, a mold changing roller mechanism 3 is arranged on the mold changing trolley body, the fixing device 2 comprises a fixing bracket, a power roller mechanism 4 is arranged on the fixing bracket, and the characteristic is that a power transmission mechanism 5 is provided, the power transmission mechanism 5 comprises a driving transmission mechanism 6 and a driven mechanism 7, the driving transmission mechanism 6 is arranged on the mold changing trolley 1, the driven mechanism 7 is arranged on the fixing device 2, the driven mechanism 7 is connected and synchronously driven via the driving transmission mechanism 6, the driving transmission mechanism 6 comprises a power driving part 8 and a power transmission part 9, the power driving part 8 comprises a driving gear fixing plate 10, a driving motor 11, an electric The machine gear 12, the transmission gear 13, the active transmission sleeve 14, the first gear 15, the second gear 16, the connecting shaft 17, the driving sprocket 18 and the driving chain 19, the driving motor 11 is provided with a power transmission part 9 on one side, and the power transmission part 9 includes an electric push rod 20, a steel ball 38, a screw 39, a gear transmission shaft 21, a limit pin 22 and a positioning pin 23, the mold changing body is located at the lower end of the mold changing roller mechanism 3 and is provided with a support beam 24 at intervals, and the two ends of the support beam 24 are respectively fixedly connected to the mold changing body, and a driving gear fixing plate 10 is provided on the support beam 24, and the lower end of the driving gear fixing plate 10 is fixedly connected to the support beam 24, and the upper end is provided with a driving motor 11 and an electric push rod 20 in parallel, and the driving motor 11 and The power supply is connected, the driving motor 11 is fixedly connected to the driving gear fixing plate 10 via the motor bracket 25, the output shaft of the driving motor 11 is fixedly connected to the motor gear 12, the motor gear 12 is meshed with the transmission gear 13, the transmission gear 13 is fixedly connected to the driving transmission sleeve 14, the driving transmission sleeve 14 is connected to the driving gear fixing plate 10 via a bearing and a bearing seat 26, the driving transmission sleeve 14 is provided with a first gear 15 in front of the transmission gear 13, and an electric push rod 20 is provided at the rear, the first gear 15 is fixedly connected to the driving transmission sleeve 14, the first gear 15 is meshed with the second gear 16, the second gear 16 is fixedly connected to one end of the connecting shaft 17, the connecting shaft 17 is connected via a bearing and a bearing seat 26. The seat is connected to the driving gear fixing plate 10, and a driving sprocket 18 is provided at the other end of the connecting shaft 17. The driving sprocket 18 is fixedly connected to the connecting shaft 17. The driving sprocket 18 is linked to the sprocket of the roller shaft on the mold changing roller mechanism 3 through a driving chain 19, so as to facilitate the rotation of the motor gear by the driving motor. The motor gear transmits power to the transmission gear by meshing with the transmission gear. The rotation of the transmission gear drives the active transmission sleeve to rotate, and the active transmission sleeve drives the first gear thereon to rotate. The first gear transmits power to the second gear by meshing, and the second gear drives the connecting shaft to rotate, and the connecting shaft drives the driving sprocket to rotate. The driving sprocket is linked to the sprocket on the roller shaft of one or two rollers on the mold changing roller mechanism through the driving chain, thereby driving the roller to rotate.The adjacent mold-changing rollers are synchronously rotated by sprockets and chains. The electric push rod 20 is connected to the power supply. The electric push rod 20 is fixedly connected to the active gear fixing plate 10 via the electric push rod bracket 27. The front end of the push rod of the electric push rod 20 is provided with a transmission shaft insertion hole. The push rod is provided with an annular upper steel ball groove in the transmission shaft insertion hole. The outer wall of the push rod is provided with a steel ball hole connected to the upper steel ball groove. The rear end of the gear transmission shaft is provided with an annular lower steel ball groove. The gear transmission shaft is inserted into the transmission shaft insertion hole of the electric push rod. The steel ball 38 enters between the upper steel ball groove and the lower steel ball groove through the steel ball hole and is locked by the screw 39 to connect the gear transmission shaft 21 with the electric push rod 20, so as to facilitate the axial movement of the gear transmission shaft in the active transmission sleeve through the electric push rod. , and the gear transmission shaft can rotate to transmit power. A driven mechanism 7 is provided in front of the gear transmission shaft 21. Positioning pins 23 are evenly distributed radially on the front end of the gear transmission shaft 21. Limiting pins 22 are evenly distributed radially on the surface of the middle part of the gear transmission shaft 21. A limiting pin groove 28 matching the limiting pin 22 is provided on the outer wall of the active transmission sleeve 14. The lower end of the limiting pin 22 is fixedly connected to the gear transmission shaft 21, and the upper end passes through the limiting pin groove 28. The gear transmission shaft 21 and the active transmission sleeve 14 are circumferentially fixed through the limiting pin groove 28, so that the gear transmission shaft can rotate with the active transmission sleeve. At the same time, the limiting pin groove allows the gear transmission shaft to move axially in the active transmission sleeve. The driven mechanism 7 includes a driven gear fixing plate 29, a driven transmission sleeve 30, and a third Gear 31, fourth gear 32, fixed shaft 33, fixed sprocket 34 and fixed chain 35, the fixed bracket is located at the lower end of the power roller mechanism 4 and is spaced apart with a fixed beam 36, the two ends of the fixed beam 36 are respectively fixedly connected to the fixed bracket, a driven gear fixing plate 29 is provided on the fixed beam 36, the lower end of the driven gear fixing plate 29 is fixedly connected to the fixed beam 36, a driven transmission sleeve 30, a third gear 31, a fourth gear 32 and a fixed shaft 33 are provided above the driven gear fixing plate 29, the center line of the driven transmission sleeve 30 is on the same horizontal line as the center line of the active transmission sleeve 14, the end of the driven transmission sleeve 30 connected to the gear transmission shaft 21 is provided with an open positioning pin groove 37 that matches the positioning pin 23, the The gear transmission shaft 21 moves axially forward under the push of the electric push rod 20, and the gear transmission shaft 21 is embedded in the driven transmission sleeve 30. The positioning pin 23 is limited by the open positioning pin groove 37 to fix the gear transmission shaft 21 and the driven transmission sleeve 30 circumferentially, so that the driven transmission sleeve can rotate with the gear transmission shaft. The driven transmission sleeve 30 is connected to the driven gear fixing plate 29 through a bearing and a bearing seat. A third gear 31 is provided on the transmission sleeve 30. The third gear 31 is meshed with the fourth gear 32. The fourth gear 32 is fixedly connected to one end of the fixed shaft 33. A fixed sprocket 34 is provided at the other end of the fixed shaft 33. The fixed shaft 33 is connected to the driven gear fixing plate 29 through a bearing and a bearing seat. The fixed sprocket 34 is fixedly connected to the fixed shaft 33.The fixed sprocket 34 is linked to the sprocket of the roller on the power roller mechanism through the fixed chain 35, so that the driven transmission sleeve drives the third gear to rotate, the third gear is meshed with the fourth gear, and drives the fourth gear to rotate, and the fourth gear drives the fixed sprocket to rotate through the fixed shaft, and the fixed sprocket is linked to the sprocket on one or two roller shafts of the power roller mechanism on the fixed device through the chain, and the adjacent rollers on the fixed device are synchronized through the sprocket and chain, thereby transmitting power from the mold changing trolley to the fixed device, and only one motor is needed to drive the rollers on the mold changing trolley and the fixed device, which greatly reduces production costs and electric energy.

[0049] The fixed device 2 described in the present invention is an injection molding machine or a mold library or a preheating station, which is conducive to transmitting power to the injection molding machine or the mold library or the preheating station through a power transmission mechanism, so that the injection molding machine or the mold library or the preheating station does not need to install a separate motor, which greatly reduces the number of motors, reduces costs, and saves electricity.

[0050] As attached Figure 1 To Attachment Figure 7The mold changing trolley described in the present invention can adopt the mold changing trolley in the background technology or the prior art. The lower end of the mold changing trolley body is provided with a universal wheel for easy movement. The upper end of the mold changing trolley body is provided with a mold changing frame. The mold changing frame is provided with a plurality of rollers arranged in parallel and at intervals. Both ends of the rollers are fixedly connected to the mold changing frame through bearings. A supporting crossbeam is provided at the lower end of the roller. The supporting crossbeam is parallel to the roller. Both ends of the supporting crossbeam are fixedly connected to the mold changing trolley body. A driving transmission mechanism is provided in the supporting crossbeam row. The fixed equipment is an injection molding machine or a mold library or a preheating station in the prior art. The fixed equipment includes a fixed bracket, a roller mounting bracket is provided on the fixed bracket, and a plurality of rollers are arranged in parallel and at intervals on the roller mounting bracket. A fixed crossbeam is provided on the fixed bracket below the roller, and a driven mechanism is provided on the fixed crossbeam. The power transmission mechanism The structure points from the mold changing car body to the fixed bracket, the active gear fixing plate of the drive transmission mechanism and the driven gear fixing plate of the driven mechanism are at the same height, and the center lines of the active transmission sleeve and the driven transmission sleeve are on the same horizontal line. During installation, the active gear fixing plate is installed on the supporting crossbeam of the mold changing car body, the motor and the electric push rod are arranged in parallel on the active gear fixing plate, an active transmission sleeve is arranged in front of the electric push rod, bearings are arranged on the active transmission sleeve at intervals, the active transmission sleeve is fixedly connected to the inner ring of the bearing, the outer ring of the bearing is fixedly connected to the bearing seat, the lower end of the bearing seat is fixedly connected to the active gear fixing plate, a gear transmission shaft is arranged in the active transmission sleeve, the gear transmission shaft is connected to the electric push rod through steel balls and screws, and a driven mechanism is arranged at the other end of the gear transmission shaft;When the mold-changing trolley is docked with the fixed equipment, the electric push rod is started, and the electric push rod pushes the gear transmission shaft to move axially forward. The limit pin on the gear transmission shaft cooperates with the limit pin groove of the active transmission sleeve to fix the gear transmission shaft and the active transmission sleeve circumferentially. The locating pin on the gear transmission shaft cooperates with the open locating pin groove on the driven transmission sleeve to fix the gear transmission shaft and the driven transmission sleeve circumferentially. As a result, the gear transmission shaft can rotate with the active transmission sleeve, and the driven transmission sleeve rotates with the gear transmission shaft. At this time, the motor is started, and the motor drives the motor gear to rotate. The motor gear transmits power to the first gear by meshing with the first gear. On the one hand, the first gear meshes with the second gear to transmit power to the second gear. The second gear coaxially drives the drive sprocket to rotate, and the drive sprocket rotates through the chain The first gear is connected with the sprocket of one or two rollers on the mold changing car body, and then the adjacent rollers are rotated synchronously through the sprocket and chain, thereby driving the roller on the mold changing car body to rotate. On the other hand, the first gear is fixedly connected with the active transmission sleeve through a flat key, thereby driving the active transmission sleeve to rotate. The active transmission sleeve transmits power to the gear transmission shaft, and the gear transmission shaft drives the driven transmission sleeve to rotate, and the driven transmission sleeve drives the third gear thereon to rotate. The third gear drives the fourth gear to rotate by meshing with the fourth gear. The fourth gear coaxially drives the fixed sprocket to rotate. The fixed sprocket is connected with the sprocket of one or two rollers on the fixed bracket through a chain, and then the adjacent rollers are rotated synchronously through the sprocket and chain, thereby driving the roller on the fixed bracket to rotate. Thus, a motor The synchronous driving of the mold changing trolley and the rollers on the fixed equipment can be realized to realize the movement or replacement of the mold. Furthermore, one mold changing trolley can be connected to multiple different fixed equipment respectively, and the fixed equipment does not need to install motors. For example, the mold changing trolley transmits power to the mold library, takes out the mold from the mold library, and transports it to the preheating station. The mold changing trolley transmits power to the preheating station, sends the mold to the preheating station for preheating, and after the preheating station is preheated, the mold changing trolley transmits power to the preheating station, takes out the mold from the preheating station, and transports the mold to the injection molding machine. The mold changing trolley transmits power to the injection molding machine, takes out the mold inside the injection molding machine, replaces the preheated mold, and performs injection molding production. In this process, if the factory has 1 double-station mold changing trolley (double-station requires 2 motors), 4 1 preheating station (each preheating station requires 1 motor, a total of 4 motors are required), 10 injection molding machines (each injection molding machine requires 1 motor, a total of 10 motors are required), 100 mold storage locations (each storage location requires a motor, a total of 100 motors are required), a total of 116 motors are required, but if the design of the present invention is adopted, the power is transmitted from the mold changing trolley to the mold library or preheating station or injection molding machine respectively, the motors inside the mold library, preheating station and injection molding machine can be cancelled, and only 2 motors on the mold changing trolley can be used, reducing 114 motors. It can be seen that the present invention greatly reduces the use of motors, can minimize manufacturing costs, save electricity, and at the same time, one motor drive reduces the difficulty of operation control and on-site construction. ;

[0051] Example 2

[0052] A mold changing system with a common driving device comprises a mold changing trolley 1 and a fixing device 2, wherein the mold changing trolley 1 comprises a mold changing trolley body, the mold changing trolley body is provided with a mold changing roller mechanism 3, the fixing device 2 comprises a fixing bracket, the fixing bracket is provided with a power roller mechanism 4, and is characterized in that: a power transmission mechanism 5 is provided, the power transmission mechanism 5 comprises a driving transmission mechanism 6 and a driven mechanism 7, the driving transmission mechanism 6 is provided on the mold changing trolley 1, the driven mechanism 7 is provided on the fixing device 2, the driven mechanism 7 is connected and synchronously driven via the driving transmission mechanism 6, the driving transmission mechanism 6 comprises a power driving part 8 and a power transmission part 9, the power driving part 8 comprises a driving gear fixing plate 10, a driving motor 11, and a motor gear 1 2, transmission gear 13, drive transmission shaft 201, first gear 15, second gear 16, connecting shaft 17, drive sprocket 18 and drive chain 19, one side of the drive motor 11 is provided with a power transmission part 9, the power transmission part 9 includes an electric push rod 20, a shift fork 202, a shaft bearing 203, a drive transmission sleeve 204, and a first cylindrical pin 205, the mold changing vehicle body is located at the lower end of the mold changing roller mechanism 3 and is provided with a support beam 24 at intervals, the two ends of the support beam 24 are respectively fixedly connected to the mold changing vehicle body, and a driving gear fixing plate 10 is provided on the support beam 24, the lower end of the driving gear fixing plate 10 is fixedly connected to the support beam 24, and the upper end is provided with a drive motor 11 and an electric push rod 20 in parallel, and the drive motor 11 is connected to a power supply The driving motor 11 is fixedly connected to the driving gear fixing plate 10 via the motor bracket 25, the output shaft of the driving motor 11 is fixedly connected to the motor gear 12, the motor gear 12 is meshed with the transmission gear 13, the transmission gear 13 is fixedly connected to the rear end of the driving transmission shaft 201, the front end surface of the driving transmission shaft 201 is radially evenly provided with first cylindrical pins 205, the front end of the driving transmission shaft 201 is sleeved with a driving transmission sleeve 204, the driving transmission shaft 201 is provided with a first gear 15 in front of the transmission gear 13, and an electric push rod 20 is provided at the rear, the driving transmission shaft 201 is connected to the driving gear fixing plate 10 via a bearing and a bearing seat 26, the first gear 15 is fixedly connected to the driving transmission shaft 201, the first gear The wheel 15 is meshed with the second gear 16, and the second gear 16 is fixedly connected to one end of the connecting shaft 17. The connecting shaft 17 is connected to the driving gear fixing plate 10 via a bearing and a bearing seat. A driving sprocket 18 is provided at the other end of the connecting shaft 17. The driving sprocket 18 is fixedly connected to the connecting shaft 17. The driving sprocket 18 is linked to the sprocket of the roller shaft on the mold changing roller mechanism 3 via a driving chain 19, so as to facilitate the rotation of the motor gear by the driving motor. The motor gear transmits power to the transmission gear by meshing with the transmission gear. The rotation of the transmission gear drives the driving transmission shaft to rotate, and the driving transmission shaft drives the first gear thereon to rotate. The first gear transmits power to the second gear by meshing. The second gear drives the connecting shaft to rotate, and the connecting shaft drives the driving sprocket to rotate.The driving sprocket is linked to the sprocket on one or two roller shafts in the mold-changing roller mechanism through a driving chain, thereby driving the roller to rotate. The adjacent mold-changing rollers are rotated synchronously through the sprocket and chain. The inner wall of the driving transmission sleeve 204 is radially evenly provided with cylindrical pin grooves 206. The driving transmission sleeve 204 is sleeved on the driving transmission shaft 201 and is circumferentially fixedly connected through the first cylindrical pin 205 and the cylindrical pin groove 206, so that the driving transmission sleeve can move axially on the driving transmission shaft and rotate with the driving transmission shaft. The rear end surface of the driving transmission sleeve 204 is provided with an annular groove 207. The electric push rod 20 is connected to a power source. The electric push rod 20 is fixedly connected to the driving gear fixing plate 10 through the electric push rod bracket 27. The front end of the rod 20 is fixedly connected to the fork 202, and the inner wall of the fork 202 is evenly provided with a shaft bearing 203, one end of the shaft on the shaft bearing 203 is fixedly connected to the fork, and one end of the bearing on the shaft bearing 203 is embedded in the annular groove 207 of the drive transmission sleeve 204 to slide the shaft bearing 203 and the drive transmission sleeve 204, so as to facilitate pushing the fork through the electric push rod, and the shift fork drives the drive transmission sleeve to move axially along the drive transmission shaft. A driven mechanism 7 is provided in front of the drive transmission sleeve 204, and the driven mechanism 7 includes a driven gear fixing plate 29, a driven transmission shaft 208, a third gear 31, a fourth gear 32, a fixed shaft 33, a fixed sprocket 34 and a fixed chain 35. The fixed bracket is located at the power roller mechanism 4 A fixed crossbeam 36 is provided at intervals at the lower end, and both ends of the fixed crossbeam 36 are fixedly connected to the fixed bracket respectively. A driven gear fixing plate 29 is provided on the fixed crossbeam 36, and the lower end of the driven gear fixing plate 29 is fixedly connected to the fixed crossbeam 36. A driven transmission shaft 208, a third gear 31, a fourth gear 32 and a fixed shaft 33 are provided above the driven gear fixing plate 29. The center line of the driven transmission shaft 208 is on the same horizontal line as the center line of the driving transmission shaft 201. The surface of one end of the driven transmission shaft 208 that is connected to the driving transmission sleeve 204 is radially uniformly provided with second cylindrical pins 209. The driving transmission sleeve 204 is sleeved forward on the driven transmission shaft 208 and connected via the second cylindrical pin 209 and the cylindrical pin groove 206. In order to facilitate the axial movement of the driving transmission sleeve under the action of the electric push rod, the driving transmission sleeve is sleeved on the driven transmission shaft, and the second cylindrical pin enters the cylindrical pin groove. When the driving transmission sleeve rotates, the second cylindrical pin and the cylindrical pin groove cooperate, and the driven transmission shaft can rotate with the driving transmission sleeve. The driven transmission shaft 208 is connected to the driven gear fixing plate 29 via a bearing and a bearing seat. A third gear 31 is provided on the driven transmission shaft 208. The third gear 31 is meshed with a fourth gear 32. The fourth gear 32 is fixedly connected to one end of a fixed shaft 33. A fixed sprocket 34 is provided at the other end of the fixed shaft 33. The fixed shaft 33 is connected to the driven gear fixing plate 29 via a bearing and a bearing seat. The fixed sprocket 34 is fixedly connected to the fixed shaft 33.The fixed sprocket 34 is linked to the sprocket of the roller on the power roller mechanism 5 through the fixed chain 35, so that the driven transmission shaft drives the third gear to rotate, the third gear is meshed with the fourth gear, and drives the fourth gear to rotate, and the fourth gear drives the fixed sprocket to rotate through the fixed shaft, and the fixed sprocket is linked to the sprocket on one or two roller shafts of the power roller mechanism on the fixed device through the chain, and the adjacent rollers on the fixed device are synchronized through the sprocket and chain, thereby transmitting power from the mold changing trolley to the fixed device, and only one motor is needed to drive the rollers on the mold changing trolley and the fixed device, which greatly reduces production costs and electric energy.

[0053] The fixed device 2 described in the present invention is an injection molding machine or a mold library or a preheating station, which is conducive to transmitting power to the injection molding machine or the mold library or the preheating station through a power transmission mechanism, so that the injection molding machine or the mold library or the preheating station does not need to install a separate motor, which greatly reduces the number of motors, reduces costs, and saves electricity.

[0054] The bearing seat 26 at the lower end of the driving transmission shaft 201 described in the present invention is provided with a push rod through hole, and the electric push rod 20 passes through the bearing seat 26 and is connected to the bearing seat 26 via an oil-free bushing 210, so as to provide support force for the push rod through the bearing seat, and at the same time, the friction between the electric push rod and the bearing seat is reduced through the oil-free bushing.

[0055] As attached Figure 8 To Attachment Fig.13When the mold changing trolley is docked with the fixed equipment, the electric push rod is started, the electric push rod pushes the shift fork, the shift fork pushes the driving transmission sleeve, and the driving transmission sleeve moves axially forward on the driving transmission shaft and docks with the driven transmission shaft. Because the mold changing trolley body and the fixed equipment are fixed in position, the driving gear fixing plate and the driven gear fixing plate are fixed in position, and the driving transmission shaft, the driving transmission sleeve and the driven transmission shaft are fixed in position. In this way, the second cylindrical pin and the cylindrical pin groove are matched and fixed, and the driving transmission sleeve and the driven transmission shaft can be circumferentially fixed. After the docking is completed, the motor is started, and the motor drives the motor gear to rotate. The motor gear transmits power to the first gear by meshing with the first gear. On the one hand, the first gear meshes with the second gear to transmit power to the second gear. The second gear coaxially drives the driving sprocket to rotate. The driving sprocket is linked to the sprocket of one or two rollers on the mold changing trolley body through a chain, and then the adjacent rollers are synchronously rotated through the sprocket and chain, thereby driving the roller on the mold changing trolley body to rotate. On the other hand, the first gear is fixedly connected to the driving transmission shaft, thereby driving the driving The driven transmission shaft rotates, and the driving transmission shaft is fixed to the driving transmission sleeve circumferentially through the first cylindrical pin and the cylindrical pin groove on the driving transmission sleeve to transmit power to the driving transmission sleeve, and the driving transmission sleeve is connected to the driven transmission shaft to transmit power to the driven transmission shaft, and the driven transmission shaft drives the third gear thereon to rotate, and the third gear drives the fourth gear to rotate by meshing with the fourth gear, and the fourth gear coaxially drives the fixed sprocket to rotate, and the fixed sprocket is linked to the sprocket of one or two rollers on the fixed bracket through a chain, and then the adjacent rollers are synchronously rotated through the sprocket and the chain, thereby driving the roller on the fixed bracket to rotate, so that one motor can realize the synchronous drive of the mold changing trolley and the roller on the fixed equipment, and realize the movement or replacement of the mold. Further, one mold changing trolley can be connected to multiple different fixed equipment respectively, and there is no need to install motors on the fixed equipment, which greatly reduces the use of motors, can minimize manufacturing costs, and save electricity. At the same time, one motor drives the synchronous transmission, which greatly reduces the difficulty of operation control and on-site construction.

[0056] Example 3

[0057] A mold changing system with a common driving device comprises a mold changing trolley 1, a fixing device I310 and a fixing device II311, wherein the mold changing trolley 1 comprises a mold changing trolley body, the mold changing trolley body is provided with a mold changing roller mechanism 3, the fixing device I310 comprises a fixing bracket, the fixing bracket is provided with a power roller mechanism I312, the fixing device II311 comprises a mounting bracket, the mounting bracket is provided with a power roller mechanism II313, and is characterized in that: a power transmission mechanism 5 is provided, the power transmission mechanism 5 comprises a drive transmission mechanism 6, a driven mechanism I314 and a driven mechanism II315, the drive transmission mechanism 6 is provided on the mold changing trolley 1, the driven mechanism I314 is provided on the fixing device I310, the driven mechanism Ⅱ315 is arranged on the fixing device Ⅱ311, and the driven mechanism Ⅰ314 and the driven mechanism Ⅱ315 are respectively connected and driven synchronously through the driving transmission mechanism 6, and the driving transmission mechanism 6 includes a power driving part 8 and a two-way power transmission part 300, and the power driving part 8 includes a driving gear fixing plate 10, a driving motor 11, a motor gear 12, a transmission gear 13, a driving transmission sleeve 14, a first gear 15, a second gear 16, a connecting shaft 17, a driving sprocket 18 and a driving chain 19. A two-way power transmission part 300 is arranged on one side of the driving motor 11, and the two-way power transmission part 300 includes an electric push rod 20, a two-way transmission shaft 301, a reversing joint 302, a support sleeve 303, a front positioning pin 304, a rear Locating pin 305, limit pin 22, steel ball 308 and bolt 309, the mold changing body is located at the lower end of the mold changing roller mechanism 3 and is spaced apart with a supporting beam 24, the two ends of the supporting beam 24 are respectively fixedly connected to the mold changing body, a driving gear fixing plate 10 is provided on the supporting beam 24, the lower end of the driving gear fixing plate 10 is fixedly connected to the supporting beam 24, and a driving motor 11, a two-way transmission shaft 301 and an electric push rod 20 are arranged in parallel at the upper end, the driving motor 11 is connected to a power source, the driving motor 11 is fixedly connected to the driving gear fixing plate 10 via a motor bracket 25, the output shaft of the driving motor 11 is fixedly connected to the motor gear 12, the motor gear 12 is meshed with the transmission gear 13, and the transmission gear 13 is meshed with the main gear. The active transmission sleeve 14 is fixedly connected, and the active transmission sleeve 14 is connected to the active gear fixing plate 10 through a bearing and a bearing seat 26. The active transmission sleeve 14 is located in front of the transmission gear 13 and is provided with a first gear 15. The first gear 15 is fixedly connected to the active transmission sleeve 14, and the first gear 15 is meshed with the second gear 16. The second gear 16 is fixedly connected to one end of a connecting shaft 17. The connecting shaft 17 is connected to the active gear fixing plate 10 through a bearing and a bearing seat. A driving sprocket 18 is provided at the other end of the connecting shaft 17. The driving sprocket 18 is fixedly connected to the connecting shaft 17. The driving sprocket 18 is linked to the sprocket of the roller on the mold changing roller mechanism 3 through a driving chain 19, so as to facilitate the rotation of the motor gear by the driving motor.The motor gear transmits power to the transmission gear by meshing with the transmission gear. The rotation of the transmission gear drives the active transmission sleeve to rotate, and the active transmission sleeve drives the first gear thereon to rotate. The first gear transmits power to the second gear by meshing. The second gear drives the connecting shaft to rotate, and the connecting shaft drives the driving sprocket to rotate. The driving sprocket drives the sprocket on the roller shaft in the roller mechanism on the mold changing trolley through the driving chain, and then drives the roller to rotate. The adjacent mold changing rollers are synchronously rotated by the sprocket and the chain. The active transmission sleeve 14, the reversing joint 302 and the support sleeve 303 are spaced from front to back on the bidirectional transmission shaft 301. The front end of the bidirectional transmission shaft 301 is evenly radially provided with front positioning pins 304. The active transmission sleeve 14 is radially evenly provided with a limit pin 22, the bidirectional transmission shaft 301 is provided with an annular steel ball groove in the reversing joint 302, the rear end of the bidirectional transmission shaft 301 passing through the support sleeve 303 is radially evenly provided with a rear positioning pin 305, the active transmission sleeve 14 is provided with a limit pin groove 28 matching with the limit pin 22, the active transmission sleeve 14 passes through the limit pin groove 28 and is circumferentially fixedly connected with the bidirectional transmission shaft 301 through the limit pin 22, so as to facilitate the bidirectional gear shaft to rotate with the active transmission sleeve, the reversing joint 302 includes a left reversing joint 306 and a right reversing joint 307, the left reversing joint 306 and the right reversing joint 307 are respectively provided with semicircular grooves, the left reversing joint 306 or the right reversing joint A semi-annular groove is provided in the semicircular groove of 307, and the left reversing joint 306 and the right reversing joint 307 relatively wrap the two-way transmission shaft 301, and the semi-annular grooves of the left reversing joint 306 and the right reversing joint 307 are opposite to the annular steel ball grooves on the two-way transmission shaft 301 and are filled with steel balls 308. The left reversing joint 306 and the right reversing joint 307 are connected to the two-way transmission shaft 301 by bolt locking, so that the two-way transmission shaft can move with the reversing joint. At the same time, the two-way transmission shaft can rotate through the annular grooves formed by the steel balls, the left reversing joint and the right reversing joint and the annular steel ball grooves on the two-way transmission shaft. An electric push rod 20 is provided on one side of the left reversing joint 306, and the electric push rod 20 is parallel to the two-way transmission shaft 301. The rod 20 is connected to the power supply, and a threaded hole is provided at the front end of the electric push rod 20. The bolt 309 passes through the electric push rod. One end of the bolt 309 is fixedly connected to the electric push rod through a nut, and the other end is fixedly connected to the left reversing joint 306 through a nut, so that after the electric push rod is started, the extension and retraction of the electric push rod can drive the reversing joint forward and backward. The support sleeve 303 is connected to the driving gear fixing plate 10 through a bearing and a bearing seat. The bidirectional transmission shaft 301 passes through the support sleeve 303 and is slidably connected to the support sleeve 303, so as to provide support for the bidirectional transmission shaft through the support sleeve. At the same time, the bidirectional transmission shaft can rotate. A driven mechanism I 314 is provided in front of the bidirectional transmission shaft 301, and a driven mechanism II 315 is provided at the rear.The driven mechanism I314 includes a driven gear fixing plate 29, a driven transmission sleeve 30, a third gear 31, a fourth gear 32, a fixed shaft 33, a fixed sprocket 34 and a fixed chain 35. The fixed bracket is located at the lower end of the power roller mechanism I312 and is spaced apart with a fixed beam 36. The two ends of the fixed beam 36 are respectively fixedly connected to the fixed bracket. A driven gear fixing plate 29 is provided on the fixed beam 36. The lower end of the driven gear fixing plate 29 is fixedly connected to the fixed beam 36. A driven transmission sleeve 30, a third gear 31, a fourth gear 32 and a fixed shaft 33 are provided above the driven gear fixing plate 29. The center line of the driven transmission sleeve 30 is on the same horizontal line as the center line of the active transmission sleeve 14. The driven transmission sleeve One end of 30 connected to the two-way transmission shaft 301 is provided with an open positioning pin groove 37 that cooperates with the front positioning pin 304. The two-way transmission shaft 301 moves axially forward under the push of the electric push rod 20, and the two-way transmission shaft 301 is embedded in the driven transmission sleeve 30. The front positioning pin 304 cooperates with the open positioning pin groove 37 to fix the two-way transmission shaft 301 and the driven transmission sleeve 30 circumferentially, so that the driven transmission sleeve can rotate with the two-way transmission shaft. The driven transmission sleeve 30 is connected to the driven gear fixing plate 29 via a bearing and a bearing seat. The transmission sleeve 30 is provided with a third gear 31, and the third gear 31 is meshed with the fourth gear 32. The fourth gear 32 is fixedly connected to one end of the fixed shaft 33, and the other end of the fixed shaft 33 is provided with The fixed sprocket 34, the fixed shaft 33 is connected to the driven gear fixing plate 29 via a bearing and a bearing seat, the fixed sprocket 34 is fixedly connected to the fixed shaft 33, the fixed sprocket 34 is linked to the sprocket of the roller shaft on the power roller mechanism Ⅰ312 via a fixed chain 35, so that the driven transmission sleeve drives the third gear to rotate, the third gear is meshed with the fourth gear, and drives the fourth gear to rotate, the fourth gear drives the fixed sprocket to rotate through the fixed shaft, the fixed sprocket is linked to the sprocket of the roller shaft on one or two fixed equipment Ⅰ power roller mechanism Ⅰ312 through a chain, and the adjacent rollers on the fixed equipment Ⅰ are synchronized through the sprocket and chain, thereby transmitting power from the mold changing trolley to the fixed equipment Ⅰ, and the mold changing trolley and the rollers on the fixed equipment Ⅰ Only one motor is needed for driving, which greatly reduces production cost and electric energy. The driven mechanism II 315 comprises a reverse gear fixing plate 316, a reverse transmission sleeve 317, a fifth gear 318, a sixth gear 319, a mounting shaft 320, a mounting sprocket 321 and a mounting chain 322. The mounting bracket is located at the lower end of the power roller mechanism II 313 and is provided with a mounting crossbeam 323 at intervals. Both ends of the mounting crossbeam 323 are respectively fixedly connected to the mounting bracket. A reverse gear fixing plate 316 is provided on the mounting crossbeam 323. The lower end of the reverse gear fixing plate 316 is fixedly connected to the mounting crossbeam 323. A reverse transmission sleeve 317, a fifth gear 318, a sixth gear 319 and a mounting shaft 320 are provided above the reverse gear fixing plate 316.The center line of the reverse transmission sleeve 317 is on the same horizontal line as the center line of the active transmission sleeve 14. The end of the reverse transmission sleeve 317 connected to the two-way transmission shaft 301 is provided with an open pin groove 324 that cooperates with the rear locating pin 305. The two-way transmission shaft 301 moves axially backward under the action of the electric push rod 20, and the two-way transmission shaft 301 is embedded in the reverse transmission sleeve 317. The rear locating pin 305 cooperates with the open pin groove 324 to fix the two-way transmission shaft 301 and the reverse transmission sleeve 317 circumferentially, so that the reverse transmission sleeve can rotate with the two-way transmission shaft. The reverse transmission sleeve 317 is connected to the reverse gear fixing plate 316 via a bearing and a bearing seat. The reverse transmission sleeve 317 is provided with a fifth gear 318, and the fifth gear 318 is meshed with the sixth gear 319. The sixth gear 319 is fixed to one end of the mounting shaft 320 The mounting shaft 320 is fixedly connected, and the other end of the mounting shaft 320 is provided with a mounting sprocket 321. The mounting shaft 320 is connected to the reverse gear fixing plate 316 through a bearing and a bearing seat. The mounting sprocket 321 is fixedly connected to the mounting shaft 320. The mounting sprocket 321 is linked to the sprocket of the roller shaft on the power roller mechanism II 313 through the mounting chain 322, so that the reverse transmission sleeve drives the fifth gear to rotate. The fifth gear meshes with the sixth gear to drive the sixth gear to rotate. The sixth gear drives the mounting sprocket to rotate through the mounting shaft. The mounting sprocket is linked to the roller sprockets on one or two power roller mechanisms II through the chain. The adjacent rollers on the fixed device II are synchronously rotated through the sprocket and the chain. Thus, the power is transmitted from the mold changing trolley to the fixed device II. The drive of the rollers on the mold changing trolley and the fixed device II only requires one motor, which greatly reduces the production cost and electric energy.

[0058] The fixed device I310 of the present invention is an injection molding machine or a mold library or a preheating station, and the fixed device II311 is an injection molding machine or a mold library or a preheating station, so as to facilitate the transmission of power to the injection molding machine or the mold library or the preheating station through a power transmission mechanism, so that the injection molding machine or the mold library or the preheating station does not need to install a motor separately, which greatly reduces the number of motors, reduces costs, and saves electricity.

[0059] As attached Fig.14 The front and rear sides of the mold changing trolley are respectively provided with a fixed device I and a fixed device II. The mold changing trolley described in the present invention can adopt the mold changing trolley in the background technology or the prior art. The fixed device I or the fixed device II is the injection molding machine or the mold library or the preheating station in the prior art. The fixed device I and the fixed device II can be the same equipment or different equipment. Because in the prior art, the mold changing trolley usually travels on a specific track, and the mold changing trolley is provided with fixed equipment on both sides. The scheme described in this embodiment can enable the mold changing trolley to provide power for the equipment on both sides, further improve the working efficiency of the mold production, and reduce the cost of the mold production. Fig.15 To Attachment Fig.18, for the power transmission between the mold changing trolley and the fixed equipment Ⅰ, when the mold changing trolley is docked with the fixed equipment Ⅰ, the electric push rod is started, the electric push rod extends the push rod, the push rod drives the reversing joint to move forward through the bolt, the reversing joint drives the two-way gear shaft to move forward, and the two-way gear shaft enters the driven transmission sleeve of the driven mechanism Ⅰ of the fixed equipment Ⅰ, and the front locating pin at the front end of the two-way gear shaft cooperates with the open locating pin groove on the driven transmission sleeve, so that the driven transmission sleeve can rotate with the two-way gear shaft, and then the power of the electric push rod is turned off, and the motor is started. The motor drives the motor gear to rotate, and the motor gear transmits power to the first gear by meshing with the first gear. On the one hand, the first gear meshes with the second gear to transmit power to the second gear. The second gear coaxially drives the driving sprocket to rotate, and the driving sprocket is linked to the sprocket of one or two rollers on the mold changing trolley body through a chain, and then the adjacent rollers are connected by the sprocket and chain. The first gear rotates synchronously, thereby driving the roller on the mold changing trolley to rotate. On the other hand, the first gear is fixedly connected to the active transmission sleeve, thereby driving the active transmission sleeve to rotate. The active transmission sleeve transmits power to the two-way gear shaft, and the two-way gear shaft drives the driven transmission sleeve to rotate. The driven transmission sleeve drives the third gear thereon to rotate. The third gear drives the fourth gear to rotate by meshing with the fourth gear. The fourth gear coaxially drives the fixed sprocket to rotate. The fixed sprocket is linked to the sprocket of one or two rollers on the fixed bracket through a chain. Then, the adjacent rollers are rotated synchronously through the sprocket and chain, thereby driving the roller on the power roller mechanism Ⅰ on the fixed equipment Ⅰ to rotate, realizing the movement and replacement of the molds on the mold changing trolley and the fixed equipment Ⅰ. After the operation is completed, the drive motor is turned off, the electric push rod is started, and the electric push rod retreats to separate the drive transmission mechanism on the mold changing trolley from the driven mechanism Ⅰ of the fixed equipment Ⅰ, as shown in the attached figure. Fig.19 To Attachment Fig. 22, for the power transmission between the mold changing trolley and the fixed equipment Ⅱ, the electric push rod continues to retreat, and the reversing joint drives the two-way gear shaft to continue to move axially backward. The rear end of the two-way gear shaft enters the reverse transmission sleeve of the driven mechanism Ⅱ of the fixed equipment Ⅱ, and the rear positioning pin at the rear end of the two-way gear shaft cooperates with the open pin groove on the reverse transmission sleeve, so that the reverse transmission sleeve can rotate with the two-way gear shaft, and then the power of the electric push rod is turned off, and the motor is started. The motor drives the motor gear to rotate, and the motor gear transmits power to the first gear by meshing with the first gear. On the one hand, the first gear meshes with the second gear to transmit power to the second gear. The second gear coaxially drives the driving sprocket to rotate. The driving sprocket is linked to the sprocket of one or two rollers on the mold changing trolley body through a chain, and then the adjacent rollers are synchronized through the sprocket and chain to achieve synchronous rotation, thereby driving the roller on the mold changing trolley body to rotate. On the other hand, the first gear is fixedly connected to the active transmission sleeve, thereby driving the active transmission sleeve to rotate, and the active transmission sleeve transmits power to the two-way gear shaft, The bidirectional gear shaft drives the reverse transmission sleeve to rotate, and the reverse transmission sleeve drives the fifth gear thereon to rotate. The fifth gear drives the sixth gear to rotate by meshing with the sixth gear. The sixth gear coaxially drives the installation sprocket to rotate. The installation sprocket is linked to the sprocket of one or two rollers on the power roller driving mechanism II on the fixed equipment II through a chain, and then the adjacent rollers are rotated synchronously through the sprocket and chain, thereby driving the roller on the power roller driving mechanism II on the fixed equipment II to rotate, and realizing the movement and replacement of the mold on the mold changing trolley and the fixed equipment II; It can be seen from the above that the mold changing trolley travels on a runway and can provide driving force for the fixed equipment on both sides at the same time, thereby improving the efficiency of mold movement and mold replacement. Because of this design, the driving force on the mold changing trolley can be transmitted to the fixed equipment, which makes it unnecessary to install motors on both the fixed equipment I and the fixed equipment II, which greatly reduces the number of motors used, greatly reduces the mold production cost, and improves the bidirectional transmission and improves the mold production efficiency.

[0060] Example 4

[0061] A mold changing system with a common driving device comprises a mold changing trolley 1 and a fixing device 2, wherein the mold changing trolley 1 comprises a mold changing trolley body, a mold changing roller mechanism 3 is arranged on the mold changing trolley body, the fixing device 2 comprises a fixing bracket, a power roller mechanism 4 is arranged on the fixing bracket, and the system is characterized in that a power transmission mechanism 5 is provided, the power transmission mechanism 5 comprises a driving transmission mechanism 6 and a driven mechanism 7, the driving transmission mechanism 6 is arranged on the mold changing trolley 1, the driven mechanism 7 is arranged on the fixing device 2, the driven mechanism 7 is connected and synchronously driven via the driving transmission mechanism 6, the driving transmission mechanism 6 comprises an active worm gear 403, a support plate 404, an active support fixing plate 405, an active worm support 406, an active worm sleeve 407, an oil-free bushing 408, a hand wheel 409, a worm transmission shaft 410, a first fixing pin 411, a second fixing pin 412 and a third fixing pin 413,

[0062] A driving worm gear 403 is provided at one end of each roller shaft on the mold-changing roller mechanism 3, and the driving worm gear 403 is fixedly connected to the roller shaft, and a driving worm sleeve 407 is provided at the lower end of the driving worm gear 403; a support plate 404 is provided on the mold-changing vehicle body below the mold-changing roller mechanism 3, and both ends of the support plate 404 are respectively fixedly connected to the mold-changing vehicle body; an active support fixing plate 405 is provided at the upper end of the support plate 404, and the lower end of the active support fixing plate 405 is fixedly connected to the support plate 404; active worm supports 406 are spaced apart on the active support fixing plate 405, and the lower end of the active worm support 406 is fixedly connected to the active support fixing plate 405, and a worm sleeve hole is provided on the active worm support 406, and the active worm sleeve 407 is passed through The oil-free bushing 408 is connected to the active worm support 406. The outer wall of the active worm sleeve 407 is provided with spiral teeth meshing with the active worm wheel 403 at intervals to facilitate the meshing transmission of the active worm sleeve and the active worm wheel. The active worm sleeve 407 is provided with a driven mechanism 7 in front and a handwheel 409 in the rear. A worm transmission shaft 410 is provided in the active worm sleeve 407. The front end of the worm transmission shaft 410 is radially uniformly provided with a first fixing pin 411, and the rear end is radially uniformly provided with a second fixing pin 412. The middle part of the worm transmission shaft 410 is radially uniformly provided with a third fixing pin 413. The active worm sleeve 407 is provided with a third pin groove 414 that matches the third fixing pin 413. The rear end of the active worm sleeve 407 is provided with a The second open pin groove 415 cooperates with the two cylindrical pins, one end of the third fixing pin 413 is fixedly connected to the worm transmission shaft 410, and the other end cooperates with the third pin groove 414, one end of the second fixing pin 412 is fixedly connected to the worm transmission shaft 410, and the other end cooperates with the second open pin groove 415 to fix the worm transmission shaft 410 and the active worm sleeve 407 circumferentially. The rear end of the worm transmission shaft 410 passes through the active worm sleeve 407 and is fixedly connected to the hand wheel 409, so as to facilitate manually pushing the hand wheel. Through the second open pin groove and the third pin groove, the active worm gear shaft can move axially in the active worm sleeve. Through the cooperation of the third fixing pin and the third pin groove and the cooperation of the second fixing pin and the second open pin groove, when the hand wheel is turned, the hand wheel drives the worm transmission When the driving shaft rotates, the active worm sleeve can rotate with the worm transmission shaft, and the upper end of the active worm sleeve is meshed with the active worm wheel on the mold changing roller mechanism, which can drive the active worm wheel to rotate, and then drive the mold changing roller to rotate, so as to realize the movement and replacement of the mold. The driven mechanism 7 includes a driven worm wheel 416, a fixed plate 417, a driven support fixed plate 418, a driven worm support 419, and a driven worm sleeve 420. A driven worm wheel 416 is provided at one end of each roller shaft on the power roller mechanism 4. The driven worm wheel 416 is fixedly connected to the roller shaft, and a driven worm sleeve 420 is provided at the lower end of the driven worm wheel 416. A fixed plate 417 is provided on the fixed bracket below the power roller mechanism 4, and both ends of the fixed plate 417 are fixedly connected to the fixed bracket respectively.A driven support fixing plate 418 is provided at the upper end of the fixing plate 417, and the lower end of the driven support fixing plate 418 is fixedly connected to the fixing plate 417. A driven worm support 419 is provided at intervals on the driven support fixing plate 418, and the lower end of the driven worm support 419 is fixedly connected to the driven support fixing plate 418. A worm sleeve hole is provided on the driven worm support 419. The driven worm sleeve 420 is connected to the driven worm support 419 through the oil-free bushing 408. Spiral teeth meshing with the driven worm wheel 416 are provided at intervals on the outer wall of the driven worm sleeve 420 to facilitate the meshing transmission of the driven worm sleeve and the driven worm wheel. The center line of the driven worm sleeve 420 is aligned with the center line of the active worm sleeve 407. On the same horizontal line, the outer wall of one end of the driven worm sleeve 420 that is connected to the active worm sleeve 407 is provided with a first open pin groove 421. When the worm transmission shaft 410 moves forward to the driven mechanism under the drive of the hand wheel 409, the worm transmission shaft 410 enters the driven worm sleeve 420, and the first fixed pin 411 on the worm transmission shaft 410 cooperates with the first open pin groove 421 to circumferentially fix the worm transmission shaft 410 and the driven worm sleeve 420, so that the driven worm sleeve can rotate with the worm transmission shaft, and the helical teeth on the driven worm sleeve mesh with the driven worm wheel, thereby driving the driven worm wheel to rotate, and the roller on the power roller mechanism also rotates accordingly, realizing the synchronous drive of the mold changing trolley and the fixed equipment.

[0063] The fixed device 2 described in the present invention is an injection molding machine or a mold library or a preheating station, so as to facilitate the synchronous driving of the mold changing trolley and the fixed device by manually turning the hand wheel. At the same time, the mold changing trolley or the injection molding machine or the mold library or the preheating station does not need to install a separate motor, which greatly reduces the number of motors, reduces costs, and saves energy consumption.

[0064] As attached Fig.23 To Attachment Fig. 27The mold changing trolley described in the present invention can adopt the mold changing trolley in the background technology or the prior art. The lower end of the mold changing trolley body is provided with a universal wheel for easy movement. The upper end of the mold changing trolley body is provided with a mold changing frame. The mold changing frame is provided with a plurality of rollers arranged in parallel and at intervals. Both ends of the rollers are fixedly connected to the mold changing frame via bearings. An active worm gear is provided on the roller shaft at one end of the roller. The active worm gear is fixedly connected to the roller shaft. The lower end of the active worm gear is meshed with the spiral teeth on the active worm sleeve. The fixing device is an injection molding machine or a mold library or a preheating station in the prior art. The fixing device includes a fixing bracket, and a roller mounting bracket is provided on the fixing bracket. , a plurality of rollers are arranged in parallel and at intervals on the roller mounting frame, and both ends of the rollers are fixedly connected to the roller mounting frame via bearings, a driven worm gear is arranged on the roller shaft at one end of the roller, and the driven worm gear is fixedly connected to the roller shaft, and the lower end of the driven worm gear meshes with the helical teeth on the driven worm sleeve. When the mold changing trolley is docked with the fixed equipment, the hand wheel is manually pushed, and the worm transmission shaft moves axially in the active worm sleeve toward the driven worm sleeve, and the second fixed pin on the worm transmission shaft at the front end of the hand wheel enters the second open pin groove of the active worm sleeve, and the third fixed pin on the worm transmission shaft moves along the third pin groove on the worm transmission sleeve The worm gear shaft enters the driven worm gear sleeve, and the first fixing pin at the front end of the worm gear shaft enters the first open pin groove of the driven worm gear sleeve to fix the worm gear shaft and the driven worm gear sleeve circumferentially. The worm gear shaft is circumferentially fixedly connected to the active worm gear sleeve through the cooperation of the second fixing pin and the second open pin groove and the third fixing pin and the third pin groove. At this time, the docking of the driving transmission mechanism and the driven mechanism is completed, and then the handwheel is rotated, and the handwheel is fixedly connected to the worm gear shaft. Therefore, the handwheel drives the worm gear shaft to rotate, and the worm gear shaft drives the active worm gear sleeve and the driven worm gear sleeve to rotate, and the active The worm sleeve is meshed with the active worm gear, and the driven worm sleeve is meshed with the driven worm gear, thereby realizing the synchronous rotation of the mold changing roller mechanism and the power roller mechanism. The present application adopts handwheel rotation drive, and no motor needs to be installed on the mold changing trolley and the fixed equipment, which greatly reduces the number of motors used. Moreover, one mold changing trolley can be connected to multiple different fixed equipment respectively, and no motor needs to be installed on the fixed equipment, which greatly reduces the mold production cost. Moreover, without a motor, there is no energy consumption. The handwheel drives the mold changing trolley and the fixed equipment to rotate synchronously, which is convenient to control and simple to operate.

[0065] Due to the adoption of the above structure, the present invention has the advantages of less motor usage, low cost, less energy consumption, convenient and easy control of synchronous drive, and less difficulty in on-site construction.

Claims

1. A mold changing system with a common driving device, comprising a mold changing trolley and a fixing device, wherein the mold changing trolley comprises a mold changing trolley body, the mold changing trolley body is provided with a mold changing roller mechanism, the fixing device comprises a fixing bracket, the fixing bracket is provided with a power roller mechanism, and is characterized in that: A power transmission mechanism is provided, and the power transmission mechanism includes a driving transmission mechanism and a driven mechanism. The driving transmission mechanism is arranged on the mold changing trolley, and the driven mechanism is arranged on the fixed equipment. The driven mechanism is connected and driven synchronously through the driving transmission mechanism. The driving transmission mechanism includes a power driving part and a power transmission part. The power driving part includes a driving gear fixing plate, a driving motor, a motor gear, a transmission gear, a driving transmission sleeve, a first gear, a second gear, a connecting shaft, a driving sprocket and a driving chain. A power transmission part is provided on one side of the driving motor, and the power transmission part includes an electric push rod, a steel ball, a screw, a gear transmission shaft, a limit pin and a positioning pin. The mold changing trolley body is provided with a support beam at intervals at the lower end of the mold changing roller mechanism. The support The two ends of the crossbeam are respectively fixedly connected to the mold changing vehicle body, and a driving gear fixing plate is provided on the supporting crossbeam. The lower end of the driving gear fixing plate is fixedly connected to the supporting crossbeam, and a driving motor and an electric push rod are arranged in parallel on the upper end. The driving motor is connected to a power source, and the driving motor is fixedly connected to the driving gear fixing plate via a motor bracket. The output shaft of the driving motor is fixedly connected to the motor gear, and the motor gear is meshed with the transmission gear. The transmission gear is fixedly connected to the driving transmission sleeve, and the driving transmission sleeve is connected to the driving gear fixing plate via a bearing and a bearing seat. The driving transmission sleeve is provided with a first gear in front of the transmission gear, and an electric push rod is provided at the rear. The first gear is fixedly connected to the driving transmission sleeve, and the first gear is meshed with the second gear. The second gear is fixedly connected to one end of the connecting shaft, and the connecting shaft is connected to the active gear fixing plate via a bearing and a bearing seat. A driving sprocket is provided at the other end of the connecting shaft, and the driving sprocket is fixedly connected to the connecting shaft. The driving sprocket is linked to the sprocket of the upper roller shaft of the mold changing roller mechanism via a driving chain. The electric push rod is connected to a power supply, and the electric push rod is fixedly connected to the active gear fixing plate via an electric push rod bracket. A transmission shaft insertion hole is provided at the front end of the push rod of the electric push rod, and an annular upper steel ball groove is provided in the push rod located in the transmission shaft insertion hole, and a steel ball hole connected to the upper steel ball groove is provided on the outer wall of the push rod, and an annular lower steel ball groove is provided at the rear end of the gear transmission shaft, and the gear transmission shaft is inserted into the transmission shaft insertion hole of the electric push rod, and the steel ball enters the upper steel ball through the steel ball hole. The groove and the lower steel ball groove are locked by screws to connect the gear transmission shaft with the electric push rod. A driven mechanism is arranged in front of the gear transmission shaft. Positioning pins are evenly distributed radially on the front end of the gear transmission shaft. Limit pins are evenly distributed radially on the middle surface of the gear transmission shaft. A limit pin groove matching with the limit pin is arranged on the outer wall of the active transmission sleeve. The lower end of the limit pin is fixedly connected to the gear transmission shaft, and the upper end passes through the limit pin groove. The gear transmission shaft and the active transmission sleeve are circumferentially fixed by the limit pin groove. The driven mechanism includes a driven gear fixing plate, a driven transmission sleeve, a third gear, a fourth gear, a fixed shaft, a fixed sprocket and a fixed chain. The fixed bracket is located at the lower end of the power roller mechanism and is spaced apart with a fixed beam. Both ends of the fixed beam are fixedly connected to the fixed bracket respectively.The fixed crossbeam is provided with a driven gear fixing plate, the lower end of the driven gear fixing plate is fixedly connected to the fixed crossbeam, and a driven transmission sleeve, a third gear, a fourth gear and a fixed shaft are provided above the driven gear fixing plate. The center line of the driven transmission sleeve and the center line of the active transmission sleeve are on the same horizontal line, and an end of the driven transmission sleeve connected to the gear transmission shaft is provided with an open positioning pin groove matched with a positioning pin. The gear transmission shaft moves axially forward under the push of the electric push rod, and the gear transmission shaft is embedded in the driven transmission sleeve. The positioning pin is limited by the open positioning pin groove to fix the gear transmission shaft and the driven transmission sleeve circumferentially. The driven transmission sleeve is fixed by the The bearing and the bearing seat are connected with the driven gear fixing plate, the transmission sleeve is provided with a third gear, the third gear is meshed with the fourth gear, the fourth gear is fixedly connected to one end of the fixed shaft, the other end of the fixed shaft is provided with a fixed sprocket, the fixed shaft is connected with the driven gear fixing plate via the bearing and the bearing seat, the fixed sprocket is fixedly connected with the fixed shaft, the fixed sprocket is linked to the sprocket of the roller shaft on the power roller mechanism via a fixed chain, when the mold changing trolley is docked with the fixed equipment, the electric push rod is started, the electric push rod pushes the gear transmission shaft to move axially forward, the limit pin on the gear transmission shaft cooperates with the limit pin groove of the active transmission sleeve to The gear transmission shaft is circumferentially fixed to the active transmission sleeve, and the locating pin on the gear transmission shaft cooperates with the open locating pin groove on the driven transmission sleeve to circumferentially fix the gear transmission shaft to the driven transmission sleeve, and the gear transmission shaft can rotate with the active transmission sleeve, and the driven transmission sleeve rotates with the gear transmission shaft, starting the motor, and the motor drives the motor gear to rotate. The motor gear transmits power to the first gear by meshing with the first gear. On the one hand, the first gear meshes with the second gear to transmit power to the second gear. The second gear coaxially drives the driving sprocket to rotate, and the driving sprocket is linked to the sprocket of one or two rollers on the mold changing car body through a chain, and then the adjacent rollers are connected by the chain. The wheels and chains rotate synchronously, thereby driving the rollers on the die-changing vehicle body to rotate. On the other hand, the first gear is fixedly connected to the active transmission sleeve through a flat key, thereby driving the active transmission sleeve to rotate. The active transmission sleeve transmits power to the gear transmission shaft, and the gear transmission shaft drives the driven transmission sleeve to rotate. The driven transmission sleeve drives the third gear on it to rotate. The third gear drives the fourth gear to rotate by meshing with the fourth gear. The fourth gear coaxially drives the fixed sprocket to rotate. The fixed sprocket is linked to the sprocket of one or two rollers on the fixed bracket through a chain. The adjacent rollers rotate synchronously through the sprocket and chain. A universal wheel is provided at the lower end of the die-changing vehicle body.

2. A mold changing system with a common driving device according to claim 1, characterized in that: The fixed equipment is an injection molding machine, a mold library or a preheating station.

3. A mold changing system with a common driving device, comprising a mold changing trolley and a fixing device, wherein the mold changing trolley comprises a mold changing trolley body, the mold changing trolley body is provided with a mold changing roller mechanism, the fixing device comprises a fixing bracket, the fixing bracket is provided with a power roller mechanism, and is characterized in that: A power transmission mechanism is provided, and the power transmission mechanism includes a driving transmission mechanism and a driven mechanism. The driving transmission mechanism is provided on the mold changing trolley, and the driven mechanism is provided on the fixed equipment. The driven mechanism is connected and driven synchronously through the driving transmission mechanism. The driving transmission mechanism includes a power driving part and a power transmission part. The power driving part includes a driving gear fixing plate, a driving motor, a motor gear, a transmission gear, a driving transmission shaft, a first gear, a second gear, a connecting shaft, a driving sprocket and a driving chain. A power transmission part is provided on one side of the driving motor, and the power transmission part includes an electric push rod, a shift fork, a shaft bearing, a driving transmission sleeve, and a first cylindrical pin. The mold changing trolley body is located at the lower end of the mold changing roller mechanism and is provided with a supporting beam at intervals. The two ends of the support beam are respectively fixedly connected to the mold changing vehicle body, and a driving gear fixing plate is provided on the support beam. The lower end of the driving gear fixing plate is fixedly connected to the support beam, and a driving motor and an electric push rod are arranged in parallel at the upper end. The driving motor is connected to a power source, and the driving motor is fixedly connected to the driving gear fixing plate via a motor bracket. The output shaft of the driving motor is fixedly connected to the motor gear, and the motor gear is meshed with the transmission gear. The transmission gear is fixedly connected to the rear end of the driving transmission shaft, and the front end surface of the driving transmission shaft is radially evenly provided with first cylindrical pins, and the front end of the driving transmission shaft is sleeved with a driving transmission sleeve, and the driving transmission shaft is provided with a first gear in front of the transmission gear, and an electric push rod is provided at the rear. The driving transmission shaft is connected to the transmission gear through a bearing. , the bearing seat is connected to the active gear fixing plate, the first gear is fixedly connected to the driving transmission shaft, the first gear is meshed with the second gear, the second gear is fixedly connected to one end of the connecting shaft, the connecting shaft is connected to the active gear fixing plate via the bearing and the bearing seat, the other end of the connecting shaft is provided with a driving sprocket, the driving sprocket is fixedly connected to the connecting shaft, the driving sprocket is linked to the sprocket of the roller shaft on the mold changing roller mechanism via a driving chain, the inner wall of the driving transmission sleeve is radially evenly provided with cylindrical pin grooves, the driving transmission sleeve is sleeved on the driving transmission shaft and is circumferentially fixedly connected via the first cylindrical pin and the cylindrical pin groove, the rear end surface of the driving transmission sleeve is provided with an annular groove, the electric push rod is connected to the power supply, and the electric push rod is connected to the main The driven gear fixing plate is fixedly connected, the front end of the electric push rod is fixedly connected to the shift fork, the inner wall of the shift fork is evenly provided with a shaft bearing, one end of the shaft on the shaft bearing is fixedly connected to the shift fork, and one end of the bearing on the shaft bearing is embedded in the annular groove of the driving transmission sleeve to slide the shaft bearing and the driving transmission sleeve. A driven mechanism is provided in front of the driving transmission sleeve, and the driven mechanism includes a driven gear fixing plate, a driven transmission shaft, a third gear, a fourth gear, a fixed shaft, a fixed sprocket and a fixed chain. The fixed bracket is located at the lower end of the power roller mechanism and is spaced apart with a fixed beam, and the two ends of the fixed beam are respectively fixedly connected to the fixed bracket, and a driven gear fixing plate is provided on the fixed beam, and the lower end of the driven gear fixing plate is fixedly connected to the fixed beam.A driven transmission shaft, a third gear, a fourth gear and a fixed shaft are arranged above the driven gear fixing plate, the center line of the driven transmission shaft and the center line of the driving transmission shaft are on the same horizontal line, a second cylindrical pin is evenly distributed radially on the surface of one end of the driven transmission shaft that is butted against the driving transmission sleeve, the driving transmission sleeve is sleeved forward on the driven transmission shaft and connected via the second cylindrical pin and the cylindrical pin groove, the driven transmission shaft is connected to the driven gear fixing plate via a bearing and a bearing seat, a third gear is arranged on the driven transmission shaft, and the third gear and the fourth gear The fourth gear is meshed, and is fixedly connected to one end of the fixed shaft. A fixed sprocket is provided at the other end of the fixed shaft. The fixed shaft is connected to the driven gear fixing plate via a bearing and a bearing seat. The fixed sprocket is fixedly connected to the fixed shaft. The fixed sprocket is linked to the sprocket of the roller shaft on the power roller mechanism via a fixed chain. When the mold changing trolley is docked with the fixed equipment, the electric push rod is started, the electric push rod pushes the shift fork, the shift fork pushes the driving transmission sleeve, the driving transmission sleeve drives the transmission shaft to move forward axially and dock with the driven transmission shaft, the motor is started, and the motor drives The motor gear rotates, and the motor gear transmits power to the first gear by meshing with the first gear. On the one hand, the first gear meshes with the second gear to transmit power to the second gear. The second gear coaxially drives the driving sprocket to rotate. The driving sprocket is linked to the sprocket of one or two rollers on the mold changing vehicle body through a chain, and then the adjacent rollers are synchronously rotated through the sprocket and chain, thereby driving the rollers on the mold changing vehicle body to rotate. On the other hand, the first gear is fixedly connected to the driving transmission shaft, thereby driving the driving transmission shaft to rotate. The driving transmission shaft is fixed to the driving transmission sleeve circumferentially through the first cylindrical pin and the cylindrical pin groove on the driving transmission sleeve to transmit power to the driving transmission sleeve. The driving transmission sleeve is docked with the driven transmission shaft to transmit power to the driven transmission shaft. The driven transmission shaft drives the third gear thereon to rotate. The third gear drives the fourth gear to rotate by meshing with the fourth gear. The fourth gear coaxially drives the fixed sprocket to rotate. The fixed sprocket is linked to the sprocket of one or two rollers on the fixed bracket through a chain, and then the adjacent rollers are synchronously rotated through the sprocket and chain. A universal wheel is provided at the lower end of the mold changing vehicle body.

4. A mold changing system with a common driving device according to claim 3, characterized in that: The fixed equipment is an injection molding machine, a mold library or a preheating station.

5. The mold changing system with a common driving device according to claim 3, characterized in that: A push rod through hole is provided on the bearing seat at the lower end of the driving transmission shaft, and the electric push rod passes through the bearing seat and is connected to the bearing seat via an oil-free bushing.

6. A mold changing system with a common driving device, comprising a mold changing trolley and a fixing device, wherein the mold changing trolley comprises a mold changing trolley body, the mold changing trolley body is provided with a mold changing roller mechanism, the fixing device comprises a fixing bracket, the fixing bracket is provided with a power roller mechanism, and is characterized in that: A power transmission mechanism is provided, and the power transmission mechanism includes a driving transmission mechanism and a driven mechanism. The driving transmission mechanism is provided on the mold changing trolley, and the driven mechanism is provided on the fixed equipment. The driven mechanism is connected and driven synchronously through the driving transmission mechanism. The driving transmission mechanism includes an active worm gear, a support plate, an active support fixing plate, an active worm support, an active worm sleeve, an oil-free bushing, a handwheel, a worm transmission shaft, a first fixed pin, a second fixed pin and a third fixed pin. An active worm gear is provided at one end of each roller shaft on the mold changing roller mechanism, and the active worm gear is fixedly connected to the roller shaft. An active worm sleeve is provided at the lower end of the active worm gear. A support plate is provided on the mold changing trolley body below the mold changing roller mechanism, and both ends of the support plate are respectively fixedly connected to the mold changing trolley body. An active bearing fixing plate is provided at the upper end of the support plate, and the lower end of the active bearing fixing plate is fixedly connected to the support plate, and an active worm bearing is arranged at intervals on the active bearing fixing plate, and the lower end of the active worm bearing is fixedly connected to the active bearing fixing plate, and a worm sleeve hole is provided on the active worm bearing, and the active worm sleeve is connected to the active worm bearing through an oil-free bushing, and spiral teeth meshing with the active worm wheel are arranged at intervals on the outer wall of the active worm sleeve, and a driven mechanism is provided in the front of the active worm sleeve, and a hand wheel is provided at the rear, and a worm transmission shaft is provided in the active worm sleeve, and a first fixing pin is evenly distributed radially at the front end of the worm transmission shaft, and a second fixing pin is evenly distributed radially at the rear end, and a third fixing pin is evenly distributed radially in the middle of the worm transmission shaft, and a third fixing pin is provided on the active worm sleeve. The third pin groove cooperates with the fixed pin, and the rear end of the active worm sleeve is provided with a second open pin groove cooperating with the second cylindrical pin. One end of the third fixed pin is fixedly connected to the worm transmission shaft, and the other end cooperates with the third pin groove. One end of the second fixed pin is fixedly connected to the worm transmission shaft, and the other end cooperates with the second open pin groove to fix the worm transmission shaft and the active worm sleeve circumferentially. The rear end of the worm transmission shaft passes through the active worm sleeve and is fixedly connected to the hand. The driven mechanism includes a driven worm wheel, a fixed plate, a driven support fixed plate, a driven worm support, and a driven worm sleeve. A driven worm wheel is provided at one end of each roller shaft on the power roller mechanism, and the driven worm wheel is fixedly connected to the roller shaft. A driven worm sleeve is provided at the lower end of the driven worm wheel. The fixed bracket is located on the power roller mechanism A fixing plate is provided at the bottom, and two ends of the fixing plate are respectively fixedly connected to the fixing bracket, and a driven support fixing plate is provided at the upper end of the fixing plate, and the lower end of the driven support fixing plate is fixedly connected to the fixing plate, and a driven worm support is arranged at intervals on the driven support fixing plate, and the lower end of the driven worm support is fixedly connected to the driven support fixing plate, and a worm sleeve hole is provided on the driven worm support, and the driven worm sleeve is connected to the driven worm support through an oil-free bushing, and spiral teeth meshing with the driven worm wheel are arranged at intervals on the outer wall of the driven worm sleeve, and the center line of the driven worm sleeve and the center line of the active worm sleeve are on the same horizontal line, and the outer wall of the end of the driven worm sleeve that is connected to the active worm sleeve is provided with a first open pin groove, and when the worm transmission shaft moves forward to the driven mechanism under the drive of the handwheel,The worm transmission shaft enters the driven worm sleeve, and the first fixed pin on the worm transmission shaft cooperates with the first open pin groove to fix the worm transmission shaft and the driven worm sleeve circumferentially. When the mold changing trolley is docked with the fixed equipment, the hand wheel is pushed, and the worm transmission shaft moves axially toward the driven worm sleeve in the active worm sleeve, and the second fixed pin on the worm transmission shaft at the front end of the hand wheel enters the second open pin groove of the active worm sleeve, and the third fixed pin on the worm transmission shaft moves along the third pin groove on the worm transmission sleeve, and the worm transmission shaft enters the driven worm sleeve, and the first fixed pin at the front end of the worm transmission shaft enters the driven worm sleeve The worm transmission shaft is circumferentially fixed to the driven worm sleeve in the first open pin groove, and the worm transmission shaft is circumferentially fixedly connected to the active worm sleeve through the cooperation of the second fixed pin and the second open pin groove, and the third fixed pin and the third pin groove, and the driving transmission mechanism and the driven mechanism are connected. Then the hand wheel is rotated, the hand wheel drives the worm transmission shaft to rotate, the worm transmission shaft drives the active worm sleeve and the driven worm sleeve to rotate, the active worm sleeve is meshed with the active worm wheel, and the driven worm sleeve is meshed with the driven worm wheel, so as to realize the synchronous rotation of the mold changing roller mechanism and the power roller mechanism. A universal wheel is provided at the lower end of the mold changing vehicle body.

7. A mold changing system with a common driving device according to claim 6, characterized in that: The fixed equipment is an injection molding machine, a mold library or a preheating station.

8. A mold changing system with a common driving device, comprising a mold changing trolley, a fixing device I and a fixing device II, wherein the mold changing trolley comprises a mold changing trolley body, the mold changing trolley body is provided with a mold changing roller mechanism, the fixing device I comprises a fixing bracket, the fixing bracket is provided with a power roller mechanism I, the fixing device II comprises a mounting bracket, the mounting bracket is provided with a power roller mechanism II, characterized in that: A power transmission mechanism is provided, and the power transmission mechanism includes a driving transmission mechanism, a driven mechanism I and a driven mechanism II. The driving transmission mechanism is arranged on the mold changing trolley, the driven mechanism I is arranged on the fixing device I, and the driven mechanism II is arranged on the fixing device II. The driven mechanism I and the driven mechanism II are respectively connected and driven synchronously through the driving transmission mechanism. The driving transmission mechanism includes a power driving part and a bidirectional power transmission part. The power driving part includes a driving gear fixing plate, a driving motor, a motor gear, a transmission gear, a driving transmission sleeve, a first gear, a second gear, a connecting shaft, a driving sprocket and a driving chain. A bidirectional power transmission part is provided on one side of the driving motor, and the bidirectional power transmission part includes an electric push rod, a bidirectional transmission shaft, a reversing joint , support sleeve, front positioning pin, rear positioning pin, limit pin, steel ball and bolt. The mold changing car body is located at the lower end of the mold changing roller mechanism and is provided with support beams at intervals. Both ends of the support beams are respectively fixedly connected to the mold changing car body. A driving gear fixing plate is provided on the support beam. The lower end of the driving gear fixing plate is fixedly connected to the support beam, and a driving motor, a two-way transmission shaft and an electric push rod are arranged in parallel at the upper end. The driving motor is connected to a power source, and the driving motor is fixedly connected to the driving gear fixing plate via a motor bracket. The output shaft of the driving motor is fixedly connected to the motor gear, and the motor gear is meshed with the transmission gear. The transmission gear is fixedly connected to the active transmission sleeve, and the active transmission sleeve is connected to the active gear fixing plate via a bearing and a bearing seat. The active transmission sleeve A first gear is provided in front of the transmission gear, the first gear is fixedly connected to the active transmission sleeve, the first gear is meshed with the second gear, the second gear is fixedly connected to one end of the connecting shaft, the connecting shaft is connected to the active gear fixing plate via a bearing and a bearing seat, a driving sprocket is provided at the other end of the connecting shaft, the driving sprocket is fixedly connected to the connecting shaft, the driving sprocket is linked to the sprocket of the roller shaft on the mold changing roller mechanism via a driving chain, an active transmission sleeve, a reversing joint and a supporting sleeve are sleeved on the bidirectional transmission shaft from front to back, front locating pins are evenly distributed radially on the front end of the bidirectional transmission shaft, limit pins are evenly distributed radially on the bidirectional transmission shaft located in the active transmission sleeve, an annular steel ball groove is provided on the bidirectional transmission shaft located in the reversing joint, and the bidirectional transmission shaft is penetrated by the A rear locating pin is evenly distributed radially through the rear end of the support sleeve, and a limit pin groove matching with the limit pin is provided on the active transmission sleeve, and the active transmission sleeve is circumferentially fixedly connected with the two-way transmission shaft through the limit pin passing through the limit pin groove, and the reversing joint comprises a left reversing joint and a right reversing joint, and a semicircular groove is respectively provided in the left reversing joint and the right reversing joint, and a semi-annular groove is provided in the semicircular groove of the left reversing joint or the right reversing joint, and the left reversing joint and the right reversing joint relatively wrap the two-way transmission shaft, and the semi-annular grooves of the left reversing joint and the right reversing joint are opposite to the annular steel ball grooves on the two-way transmission shaft and are filled with steel balls, and the left reversing joint and the right reversing joint are connected to the two-way transmission shaft by bolt locking, and an electric push rod is provided on one side of the left reversing joint, and the electric push rod is parallel to the two-way transmission shaft.The electric push rod is connected to the power supply, and a threaded hole is provided at the front end of the electric push rod. The bolt passes through the electric push rod, and one end of the bolt is fixedly connected to the electric push rod through a nut, and the other end is fixedly connected to the left reversing joint through a nut. The support sleeve is connected to the driving gear fixing plate through a bearing and a bearing seat, and the bidirectional transmission shaft passes through the support sleeve and is slidably connected to the support sleeve. A driven mechanism I is provided in front of the bidirectional transmission shaft, and a driven mechanism II is provided at the rear. The driven mechanism I includes a driven gear fixing plate, a driven transmission sleeve, a third gear, a fourth gear, a fixed shaft, a fixed sprocket and a fixed chain. The fixed bracket is located at the lower end of the power roller mechanism I and is spaced apart with a fixed beam. The two ends of the fixed beam are respectively fixedly connected to the fixed bracket. A driven gear fixing is provided on the fixed beam. The fixed plate, the lower end of the driven gear fixing plate is fixedly connected to the fixed crossbeam, and a driven transmission sleeve, a third gear, a fourth gear and a fixed shaft are arranged above the driven gear fixing plate, the center line of the driven transmission sleeve and the center line of the active transmission sleeve are on the same horizontal line, and one end of the driven transmission sleeve connected to the two-way transmission shaft is provided with an open positioning pin groove matched with the front positioning pin, and the two-way transmission shaft moves axially forward under the push of the electric push rod, and the two-way transmission shaft is embedded in the driven transmission sleeve, and the front positioning pin cooperates with the open positioning pin groove to fix the two-way transmission shaft and the driven transmission sleeve circumferentially, and the driven transmission sleeve is connected to the driven gear fixing plate via a bearing and a bearing seat, and a third gear is arranged on the transmission sleeve, and the third gear is meshed with the fourth gear, and the fourth gear It is fixedly connected to one end of the fixed shaft, and a fixed sprocket is provided at the other end of the fixed shaft. The fixed shaft is connected to the driven gear fixing plate via a bearing and a bearing seat. The fixed sprocket is fixedly connected to the fixed shaft, and the fixed sprocket is linked to the sprocket of the roller shaft on the power roller mechanism I via a fixed chain. The driven mechanism II includes a reverse gear fixing plate, a reverse transmission sleeve, a fifth gear, a sixth gear, a mounting shaft, a mounting sprocket and a mounting chain. The mounting bracket is located at the lower end of the power roller mechanism II and is spaced apart from a mounting beam. The two ends of the mounting beam are respectively fixedly connected to the mounting bracket. A reverse gear fixing plate is provided on the mounting beam. The lower end of the reverse gear fixing plate is fixedly connected to the mounting beam. A reverse transmission sleeve, a fifth gear, a sixth gear, a mounting shaft, a mounting sprocket and a mounting chain are provided above the reverse gear fixing plate. Gear and installation shaft, the center line of the reverse transmission sleeve and the center line of the active transmission sleeve are on the same horizontal line, the end of the reverse transmission sleeve connected to the two-way transmission shaft is provided with an open pin groove matched with the rear locating pin, the two-way transmission shaft moves axially backward under the action of the electric push rod, the two-way transmission shaft is embedded in the reverse transmission sleeve, the rear locating pin and the open pin groove cooperate to fix the two-way transmission shaft and the reverse transmission sleeve circumferentially, the reverse transmission sleeve is connected to the reverse gear fixing plate via a bearing and a bearing seat, the reverse transmission sleeve is provided with a fifth gear, the fifth gear is meshed with the sixth gear, the sixth gear is fixedly connected to one end of the installation shaft, the other end of the installation shaft is provided with a mounting sprocket, the installation shaft is connected to the reverse gear fixing plate via a bearing and a bearing seat,The mounting sprocket is fixedly connected to the mounting shaft, and the mounting sprocket is linked to the sprocket of the roller shaft on the power roller mechanism II through the mounting chain. When the mold-changing trolley is docked with the fixed device I, the electric push rod is started, the electric push rod extends the push rod, and the push rod drives the reversing joint to move forward through the bolt, and the reversing joint drives the bidirectional gear shaft to move forward. The bidirectional gear shaft enters the driven transmission sleeve of the driven mechanism I of the fixed device I, and the driven transmission sleeve can rotate with the bidirectional gear shaft. The electric push rod is started, and the electric push rod retreats to separate the driving transmission mechanism on the mold-changing trolley from the driven mechanism I of the fixed device I. The electric push rod continues to retreat, and the reversing joint drives the bidirectional gear shaft to continue to move axially backward. The rear end of the bidirectional gear shaft enters the reverse transmission sleeve of the driven mechanism II of the fixed device II. The rear positioning pin at the rear end of the bidirectional gear shaft cooperates with the open pin groove on the reverse transmission sleeve, so that the reverse transmission sleeve can rotate with the bidirectional gear shaft. A universal wheel is provided at the lower end of the mold-changing trolley body.

9. A mold changing system with a common driving device according to claim 8, characterized in that: The fixed equipment I is an injection molding machine or a mold library or a preheating station, and the fixed equipment II is an injection molding machine or a mold library or a preheating station.

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