Assembling device of multi-layer co-extrusion film blowing die

Abstract

The invention discloses an assembling device of a multi-layer co-extrusion film blowing die, and relates to the technical field of multi-layer co-extrusion film blowing die assembling. Comprising a base, an electric mechanical arm, a positioning installation assembly, a bottom supporting assembly and an angle adjusting assembly, a positioning pin can automatically drive an air bag to be expanded and locked when entering a feeding port, and a contact on the positioning pin synchronously extrudes a second piezoelectric element; the control system can analyze the rotating angle of the rotating ring through the electric signal of the first piezoelectric element at the moment, the control system analyzes the size of the angle needing to be adjusted of the feeding port according to the installation requirement of the angle of the feeding port, and therefore automatic locking and angle recognition of the feeding port are achieved. A to-be-installed material disc is lifted through the L-shaped supporting fork, the side face of the material disc is pushed through the deviation rectifying block, the purpose of centering the material disc is achieved, then the first electric telescopic rod drives the material disc to descend through the supporting disc frame, a mold column is sleeved with a hole in the center of the material disc, and the purpose of preliminarily installing the material disc is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of multi-layer co-extrusion blown film mold assembly, in particular to an assembly device for a multi-layer co-extrusion blown film mold. Background Art

[0002] As a key plastic processing equipment, the core function of the film blowing machine is to efficiently and flexibly produce plastic films of various specifications and properties. These films not only play an indispensable role in daily life, but also play a vital role in many industrial fields. The multi-layer co-extrusion film blowing machine can co-extrude a variety of materials with different characteristics to form a composite film with multiple functions. This composite film not only has better physical and chemical properties, but also can meet the specific needs of different industries for packaging materials. As a key component, the mold in the multi-layer co-extrusion film blowing machine has been studied by people, but there is a lack of related installation equipment on the market.

[0003] There are many types of multi-layer co-extrusion blown film molds. Multi-layer co-extrusion blown film molds usually include a base with a mold column installed, and multi-layer material discs are superimposed and installed on the base. The mold column passes through the multi-layer material discs, and an end cover is provided at the top of the mold. Bolts are installed on the end cover, and the bolts pass through the multi-layer material discs and are threadedly connected to the base. At present, multi-layer co-extrusion blown film molds are mostly installed manually with lifting equipment. This method is not only inefficient, but also has many safety hazards in the lifting process. During lifting, the mold frame such as the material disc will shake with the rope, making it difficult for the material disc to pass through the mold column. When the material disc passes through the mold column and is installed on the base, it is also necessary to adjust its angle so that the bolt holes on the end cover, each layer of the material disc and the base can be aligned, which consumes a lot of manpower and time. Summary of the invention

[0004] The object of the present invention is to provide an assembly device for a multi-layer co-extrusion blown film die to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an assembly device for a multi-layer co-extrusion blown film mold, comprising a base, a plurality of electric mechanical arms are installed on the base, a positioning and mounting assembly is installed on the base, a bottom support assembly is installed on the base, and an angle adjustment assembly is installed on the base; the angle adjustment assembly comprises a third electric telescopic rod, the third electric telescopic rod is installed on the base, an adjustment tray is installed on the output shaft of the third electric telescopic rod, a rotating ring is rotatably installed on the adjusting tray, the rotating ring is provided with gear teeth, an adjustment fixing assembly is slidably installed on the rotating ring, a driving assembly is installed on the adjusting tray, the driving assembly and the rotating ring are meshed and transmitted through gear teeth, an angle detector is rotatably installed on the adjusting tray, and the angle detector and the rotating ring are meshed and transmitted through gear teeth.

[0006] The assembly device is connected to a control cabinet, which contains a control system for controlling the entire assembly device. The base is also provided with an electric clamping device for clamping and fixing the installed material disk to prevent the material disk from rotating and misaligning.

[0007] The adjustment and fixing assembly includes a fixed bracket and a fourth electric telescopic rod. The fixed bracket is slidably installed on the rotating ring. The fixed bracket is provided with a top support plate. The fixed bracket is provided with a cross bar. The cross bar is provided with a piston. The fourth electric telescopic rod is installed on the adjustment tray. The output shaft of the fourth electric telescopic rod is connected to the fixed bracket.

[0008] The adjustment and fixing assembly also includes a locating pin and a cylinder. The locating pin is slidably installed on the fixed bracket, the cylinder is installed on the top support plate, a reset detection ring is installed on the cylinder output shaft, the reset detection ring is slidably connected to the locating pin, the locating pin passes through the reset detection ring, a reset spring is installed between the locating pin and the fixed bracket, a rolling ball is rotatably installed on one end of the locating pin, an airbag is installed on the locating pin, and the airbag is connected to the inside of the locating pin.

[0009] A ball groove is provided at one end of the locating pin, and the ball is rotatably installed in the ball groove. A compression groove is provided on the locating pin, and the cross bar is slidably connected with the locating pin through the compression groove. A compression chamber is provided in the locating pin, and a piston is slidably arranged in the compression chamber. The compression chamber is filled with a compressible medium. A flow channel is provided in the locating pin, and one end of the flow channel is connected with the compression chamber, and the other end of the flow channel is connected with the inside of the airbag. A rear tray is provided at the other end of the locating pin, and a front tray is provided on the locating pin. A reset spring is provided between the front tray and the fixed bracket, and a contact is provided on the rear tray, and the contact corresponds to the position of the second diaphragm.

[0010] After the material tray is initially installed, the control system turns on the third electric telescopic rod, and the third electric telescopic rod drives the entire angle adjustment assembly to rise to the height of the material tray. The control system turns on the cylinder, and the cylinder output shaft drives the reset detection ring to extend. The reset detection ring drives the positioning pin to slide through the rear tray, and the positioning pin overcomes the elastic force of the reset spring and slides on the fixed bracket until the positioning pin drives the airbag to retract into the fixed bracket. During the sliding process of the positioning pin, the positioning pin is displaced relative to the fixed bracket, and the cross bar on the fixed bracket slides in the compression slide groove. The piston on the cross bar slides and pulls in the compression chamber. The sliding of the piston increases the volume of the compression chamber, and the increase in volume reduces the pressure in the compression chamber. The airbag connected to the compression chamber through the flow channel shrinks under negative pressure conditions, so that it can be retracted into the fixed bracket together with the positioning pin; after the positioning pin retracts, the control system turns on the fourth electric telescopic rod, and the output shaft of the fourth electric telescopic rod pushes the fixed bracket forward until the rolling ball at the front end of the positioning pin abuts against the side of the material tray. The control system controls the cylinder output shaft to retract and reset. Under the resistance of the side of the material tray, the positioning pin remains in its original state without sliding, and enters the waiting state.

[0011] A second diaphragm is installed in the reset detection ring, and a second piezoelectric element is installed between the second diaphragms.

[0012] The angle detector includes a detection shell and a toothed disc. The detection shell is installed on an adjustment tray. The toothed disc is rotatably installed on the adjustment tray. The toothed disc and the adjustment tray are driven by gear teeth meshing. The toothed disc is rotatably connected to the bottom end of the detection shell. A detection column is installed on the toothed disc. The detection column is provided with a thread. A detection cylinder is slidably installed in the detection shell. The detection cylinder is provided with an internal thread. The detection cylinder is threadedly connected to the detection column. A sliding plate is slidably installed in the detection shell. A first diaphragm is installed on the detection shell. A first piezoelectric element is installed between the first diaphragm and the sliding plate. A detection spring is installed between the sliding plate and the detection cylinder.

[0013] After the positioning pin enters the waiting state, the control system starts the driving motor, and the output shaft of the driving motor drives the adjusting gear to rotate, the adjusting gear drives the rotating ring to rotate, and the rotating ring drives the adjusting fixed component to rotate. When the rotating ring starts to rotate, it drives the toothed disc to rotate, and the toothed disc drives the detection column to rotate. The detection column drives the detection cylinder to rotate through the thread. Since the detection cylinder is slidably connected to the detection shell, it can only slide up and down along the inner wall of the detection shell, thereby converting the rotation into sliding. The detection cylinder slides upward to squeeze the detection spring. After the detection spring is compressed, it applies elastic force to the sliding plate. The sliding plate is compressed and squeezes the first piezoelectric element. The first piezoelectric element generates an electric charge under the compression of the first diaphragm and the sliding plate, and transmits it to the control system through the wire. The control system records the strength of the received electrical signal. As the rotation angle of the rotating ring increases, the toothed disc drives the detection column to rotate more circles, the higher the rising height of the detection cylinder, the greater the squeezing force of the detection spring on the first piezoelectric element, and the electrical signal received by the control system is enhanced. The control system analyzes the rotation angle of the transmission ring through the strength of the electrical signal.

[0014] When the positioning pin rotates to the position of the feed port on the side of the material disc, the positioning pin loses the support of the side of the material disc, the reset spring rebounds and drives the positioning pin to slide, the positioning pin slides and extends into the feed port, and the positioning pin produces a relative displacement opposite to the previous one with the fixed bracket when sliding, and the piston slides and squeezes in the compression chamber, so that the volume of the compression chamber is reduced, and the pressure in the compression chamber is increased, and the medium in the compression chamber is squeezed into the airbag through the flow channel, so that the airbag expands, and the airbag expands in the feed port of the material disc, so that the positioning pin can lock the feed port, and at the same time, the moment the positioning pin completely slides into the feed port, the tap on the rear tray just contacts the second piezoelectric in the second diaphragm The element produces extrusion. After the control system receives the electrical signal from the second piezoelectric element, it turns off the drive motor and records the strength of the electrical signal from the first piezoelectric element. The rotation angle of the rotating ring can be analyzed through the electrical signal from the first piezoelectric element at this time. At the same time, this angle is also the angle of the feed port. According to the installation requirements of the feed port angle, the control system subtracts the current angle of the feed port from the angle required for installation, thereby deriving the angle that the feed port needs to be adjusted. The control system starts the drive motor again, and the drive motor drives the rotating ring to rotate to the corresponding angle through the gear. The rotating ring drives the material disk to rotate around the mold column through the positioning pin, thereby completing the adjustment of the material disk angle.

[0015] The control system controls the angle adjustment component to reset, and uses the electric clamping device to fix the adjusted material disc, repeats the previous steps, stacks the next material disc on the installed material disc and adjusts the angle until the material disc is installed. The control system turns on the electric lifting platform, which drives the base with the mold column to rise, so that the base fits tightly with the bottom material disc, and finally installs the end cover on the top material disc, and uses the electric mechanical arm to tighten the bolts to achieve the overall installation of the multi-layer co-extrusion blown film mold.

[0016] The positioning and installation assembly includes a first electric telescopic rod, which is installed on a base, a supporting disc frame is installed on the output shaft of the first electric telescopic rod, a second electric telescopic rod is slidably installed on the supporting disc frame, an L-shaped supporting fork is installed on the output shaft of the second electric telescopic rod, a first connecting rod is installed on the L-shaped supporting fork, a correcting block is installed at one end of the first connecting rod, and the L-shaped supporting fork is slidably connected to the supporting disc frame.

[0017] A support rod is also installed on the base, and a support ring is installed on the support rod; the bottom support assembly includes an electric lifting platform, and a bottom tray is installed on the electric lifting platform; the driving assembly includes a driving motor, and the output shaft of the driving motor passes through the adjustment tray and is installed with an adjusting gear, and the adjusting gear is meshed with the rotating ring through gear teeth for transmission.

[0018] First, use the external lifting mechanism to lift the mold base with the mold column installed on the bottom tray. After adjusting the position and angle of the mold base, use the lifting mechanism again to lift the material tray. The lifting mechanism lifts the material tray to the positioning installation component. The control system starts the second electric telescopic rod. The output shaft of the second electric telescopic rod drives the L-shaped support fork to extend to the bottom of the material tray. The L-shaped support fork supports the material tray. After that, the L-shaped support fork extends further forward, and the correction block on the L-shaped support fork pushes the side of the material tray. Under the pushing of several correction blocks, the material tray gradually Center until the hole on the material tray is aligned with the center of the mold column, the control system stops the second electric telescopic rod, and at the same time, the lifting mechanism detaches from the material tray and lifts the next material tray. The control system turns on the first electric telescopic rod, and the first electric telescopic rod drives the material tray to descend through the support tray frame, so that the hole in the center of the material tray is set on the mold column. When the material tray is close to the support ring, the control system controls the second electric telescopic rod to retract, and the output shaft of the electric telescopic rod drives the L-shaped fork to retract, and the material tray falls onto the support ring, thereby achieving the purpose of preliminary installation of the material tray.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The positioning pin can automatically drive the airbag to expand and lock when entering the feed port. At the same time, the contact on the positioning pin just squeezes the second piezoelectric element in the second diaphragm. After receiving the electrical signal of the second piezoelectric element, the control system records the instantaneous electrical signal of the first piezoelectric element. The rotation angle of the rotating ring can be analyzed through the electrical signal of the first piezoelectric element at this time. According to the installation requirements of the feed port angle, the control system analyzes the angle that needs to be adjusted at the feed port, thereby realizing automatic locking and angle recognition of the feed port, and automatically analyzing the angle that needs to be adjusted, avoiding the tediousness of manual alignment.

[0021] 2. Use the L-shaped fork to lift the material tray to be installed. By controlling the L-shaped fork to move closer, the correction block on the L-shaped fork pushes the side of the material tray to achieve the purpose of centering the material tray. After that, the first electric telescopic rod drives the material tray to descend through the support tray frame, so that the hole in the center of the material tray is set on the mold column, thereby achieving the purpose of preliminary installation of the material tray.

[0022] 3. Use the positioning pin and the airbag to lock the feed port of the material disc. The rotating ring drives the material disc to rotate around the mold column through the positioning pin to complete the adjustment of the angle of the material disc. Use the angle detector to convert the rotation of the rotating ring into the rotation of the detection column, and then convert the rotation of the detection column into the squeezing of the first piezoelectric element by the detection tube. The control system records the strength of the received electrical signal and determines the angle of rotation of the transmission ring by analyzing the strength of the electrical signal.

[0023] 4. Use the reset detection ring to drive the positioning pin into the waiting state. At the same time, use the displacement of the positioning pin to drive the piston on the fixed bracket to squeeze or pull the compression chamber, and drive the automatic expansion and contraction of the airbag by changing the volume of the compression chamber.

[0024] 5. Use electric robotic arms to automatically tighten bolts, saving a lot of manpower and improving installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an overall stereogram of the assembly device of the present invention;

[0026] Figure 2 A three-dimensional diagram of the positioning and installation assembly of the present invention;

[0027] Figure 3 is a three-dimensional diagram of the bottom support assembly of the present invention;

[0028] Figure 4 is a three-dimensional diagram of the angle adjustment assembly of the present invention;

[0029] Figure 5 is a three-dimensional diagram of the drive assembly of the present invention;

[0030] Figure 6 is a three-dimensional diagram of the angle detection assembly of the present invention;

[0031] Figure 7 A three-dimensional diagram of the detection housing and the detection tube of the present invention;

[0032] Figure 8 A perspective view of the adjustment and fixing assembly of the present invention;

[0033] Fig. 9 is a three-dimensional diagram of the fixing bracket of the present invention;

[0034] Fig.10 A cross-sectional view of the adjustment and fixing assembly of the present invention;

[0035] Fig.11 For the present invention Fig.10 A partial enlarged view of the middle A area;

[0036] Fig.12 It is a three-dimensional diagram of the positioning pin of the present invention.

[0037] In the figure: 1, base; 2, electric mechanical arm; 3, positioning and installation assembly; 4, bottom support assembly; 5, angle adjustment assembly; 31, first electric telescopic rod; 32, support plate frame; 33, second electric telescopic rod; 34, L-shaped fork; 35, correction block; 36, first connecting rod; 11, support rod; 12, support ring; 41, electric lifting platform; 42, bottom tray; 51, third electric telescopic rod; 52, adjustment and fixing assembly; 53, angle detector; 54, driving assembly; 55, adjustment tray; 56, rotating ring; 541, driving motor; 542, adjustment gear; 561, gear teeth; 531, detection housing; 532, detection spring; 533, first A diaphragm; 534, a first piezoelectric element; 535, a slide; 536, a detection tube; 537, a detection column; 538, a toothed disc; 521, a cylinder; 522, a fourth electric telescopic rod; 523, a reset detection ring; 524, a positioning pin; 525, a fixed bracket; 526, a reset spring; 527, an air bag; 528, a rolling ball; 5251, a top support plate; 5252, a piston; 5253, a cross bar; 5231, a second diaphragm; 5232, a second piezoelectric element; 5241, a flow channel; 5242, a compression chamber; 5243, a rear tray; 5244, a front tray; 5245, a compression slide groove; 5246, a ball groove; 5247, a contact. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] like Figure 1-Figure 12 As shown, the present invention provides a technical solution for an assembly device of a multi-layer co-extrusion blown film mold: comprising a base 1, a plurality of electric mechanical arms 2 are installed on the base 1, a positioning and mounting assembly 3 is installed on the base 1, a bottom support assembly 4 is installed on the base 1, and an angle adjustment assembly 5 is installed on the base 1; the angle adjustment assembly 5 comprises a third electric telescopic rod 51, the third electric telescopic rod 51 is installed on the base 1, an adjustment tray 55 is installed on the output shaft of the third electric telescopic rod 51, a rotating ring 56 is rotatably installed on the adjusting tray 55, the rotating ring 56 is provided with gear teeth 561, an adjustment fixing assembly 52 is slidably installed on the rotating ring 56, a driving assembly 54 is installed on the adjusting tray 55, the driving assembly 54 and the rotating ring 56 are meshed and transmitted through the gear teeth 561, an angle detector 53 is rotatably installed on the adjusting tray 55, and the angle detector 53 and the rotating ring 56 are meshed and transmitted through the gear teeth 561.

[0040] The assembly device is connected to a control cabinet, which contains a control system for controlling the entire assembly device. The base 1 is also provided with an electric clamping device for clamping and fixing the installed material disk to prevent the material disk from rotating and misaligning.

[0041] A support rod 11 is also installed on the base 1, and a support ring 12 is installed on the support rod 11; the bottom support assembly 4 includes an electric lifting platform 41, and a bottom tray 42 is installed on the electric lifting platform 41; the driving assembly 54 includes a driving motor 541, and the output shaft of the driving motor 541 passes through the adjustment tray 55 and is installed with an adjustment gear 542, and the adjustment gear 542 is meshed with the rotating ring 56 through the gear teeth 561 for transmission.

[0042] The adjusting and fixing assembly 52 includes a fixed bracket 525 and a fourth electric telescopic rod 522. The fixed bracket 525 is slidably installed on the rotating ring 56. The fixed bracket 525 is provided with a top supporting plate 5251. The fixed bracket 525 is provided with a cross bar 5253. The cross bar 5253 is provided with a piston 5252. The fourth electric telescopic rod 522 is installed on the adjusting tray 55. The output shaft of the fourth electric telescopic rod 522 is connected to the fixed bracket 525.

[0043] The adjusting and fixing assembly 52 also includes a positioning pin 524 and a cylinder 521. The positioning pin 524 is slidably installed on the fixed bracket 525. The cylinder 521 is installed on the top support plate 5251. A reset detection ring 523 is installed on the output shaft of the cylinder 521. The reset detection ring 523 is slidably connected with the positioning pin 524. The positioning pin 524 passes through the reset detection ring 523. A reset spring 526 is installed between the positioning pin 524 and the fixed bracket 525. A rolling ball 528 is rotatably installed at one end of the positioning pin 524. An airbag 527 is installed on the positioning pin 524, and the airbag 527 is connected to the inside of the positioning pin 524.

[0044] A ball groove 5246 is provided at one end of the positioning pin 524, and the ball 528 is rotatably installed in the ball groove 5246. A compression groove 5245 is provided on the positioning pin 524, and the cross bar 5253 is slidably connected with the positioning pin 524 through the compression groove 5245. A compression chamber 5242 is provided in the positioning pin 524, and a piston 5252 is slidably arranged in the compression chamber 5242. The compression chamber 5242 is filled with a compressible medium. A fluid is provided in the positioning pin 524. The movable channel 5241, one end of the flow channel 5241 is connected to the compression chamber 5242, the other end of the flow channel 5241 is connected to the inside of the airbag 527, the other end of the positioning pin 524 is provided with a rear tray 5243, the positioning pin 524 is provided with a front tray 5244, a return spring 526 is provided between the front tray 5244 and the fixed bracket 525, and the rear tray 5243 is provided with a contact 5247, and the contact 5247 corresponds to the position of the second diaphragm 5231.

[0045] A second diaphragm 5231 is installed in the reset detection ring 523 , and a second piezoelectric element 5232 is installed between the second diaphragms 5231 .

[0046] The angle detector 53 includes a detection shell 531 and a toothed disc 538. The detection shell 531 is installed on the adjustment tray 55. The toothed disc 538 is rotatably installed on the adjustment tray 55. The toothed disc 538 and the adjustment tray 55 are meshed and transmitted through gear teeth 561. The toothed disc 538 is rotatably connected to the bottom end of the detection shell 531. A detection column 537 is installed on the toothed disc 538. The detection column 537 is provided with a thread. A detection cylinder 536 is slidably installed in the detection shell 531. The detection cylinder 536 is provided with an internal thread. The detection cylinder 536 is threadedly connected to the detection column 537. A slide 535 is slidably installed in the detection shell 531. A first diaphragm 533 is installed on the detection shell 531. A first piezoelectric element 534 is installed between the first diaphragm 533 and the slide 535. A detection spring 532 is installed between the slide 535 and the detection cylinder 536.

[0047] The positioning and mounting assembly 3 includes a first electric telescopic rod 31, which is mounted on the base 1. A supporting disc frame 32 is mounted on the output shaft of the first electric telescopic rod 31, and a second electric telescopic rod 33 is slidably mounted on the supporting disc frame 32. An L-shaped supporting fork 34 is mounted on the output shaft of the second electric telescopic rod 33, and a first connecting rod 36 is mounted on the L-shaped supporting fork 34. A correcting block 35 is mounted at one end of the first connecting rod 36, and the L-shaped supporting fork 34 is slidably connected to the supporting disc frame 32.

[0048] The working principle of the present invention is as follows: first, the mold base with the mold column installed is hoisted onto the bottom tray 42 by using the external hoisting mechanism, and after adjusting the position and angle of the mold base, the material tray is hoisted by the hoisting mechanism again, and the hoisting mechanism hoists the material tray to the positioning installation component 3, and the control system turns on the second electric telescopic rod 33, and the output shaft of the second electric telescopic rod 33 drives the L-shaped supporting fork 34 to extend to the bottom of the material tray, and the L-shaped supporting fork 34 supports the material tray, and then, the L-shaped supporting fork 34 extends further forward, and the correction block 35 on the L-shaped supporting fork 34 pushes the side of the material tray, and under the pushing of several correction blocks 35 , the material tray is gradually centered until the hole on the material tray is aligned with the center of the mold column, the control system stops the second electric telescopic rod 33, and at the same time, the lifting mechanism detaches from the material tray and lifts the next material tray. The control system turns on the first electric telescopic rod 31, and the first electric telescopic rod 31 drives the material tray to descend through the support tray frame 32, so that the hole in the center of the material tray is sleeved on the mold column. When the material tray is close to the support ring 12, the control system controls the second electric telescopic rod 33 to retract, and the output shaft of the electric telescopic rod drives the L-shaped fork 34 to be retracted, and the material tray falls onto the support ring 12, thereby achieving the purpose of preliminary installation of the material tray.

[0049] After the material tray is initially installed, the control system starts the third electric telescopic rod 51, and the third electric telescopic rod 51 drives the entire angle adjustment assembly 5 to rise to the height of the material tray. The control system starts the cylinder 521, and the output shaft of the cylinder 521 drives the reset detection ring 523 to extend, and the reset detection ring 523 drives the positioning pin 524 to slide through the rear tray 5243, and the positioning pin 524 overcomes the elastic force of the reset spring 526 and slides on the fixed bracket 525 until the positioning pin 524 drives the airbag 527 to retract into the fixed bracket 525. During the sliding process of the positioning pin 524, the positioning pin 524 is displaced relative to the fixed bracket 525, and the cross bar 5253 on the fixed bracket 525 slides in the compression groove 5245. The piston 5252 on the cross bar 5253 is compressed. The piston 5252 slides and is pulled in the chamber 5242, and the sliding of the piston increases the volume of the compression chamber 5242. The increase in volume reduces the pressure in the compression chamber 5242. The airbag 527 connected to the compression chamber 5242 through the flow channel 5241 shrinks under negative pressure conditions, so that it can be retracted into the fixed bracket 525 together with the positioning pin 524; after the positioning pin 524 retracts, the control system turns on the fourth electric telescopic rod 522, and the output shaft of the fourth electric telescopic rod 522 pushes the fixed bracket 525 forward until the rolling ball 528 at the front end of the positioning pin 524 abuts against the side of the material disc, and the control system controls the output shaft of the cylinder 521 to retract and reset. Under the resistance of the side of the material disc, the positioning pin 524 remains in its original state without sliding, and enters the waiting state.

[0050] After the positioning pin 524 enters the waiting state, the control system starts the driving motor 541, the output shaft of the driving motor 541 drives the adjusting gear 542 to rotate, the adjusting gear 542 drives the rotating ring 56 to rotate, the rotating ring 56 drives the adjusting fixing assembly 52 to rotate, and when the rotating ring 56 starts to rotate, it drives the toothed disc 538 to rotate, the toothed disc 538 drives the detection column 537 to rotate, and the detection column 537 drives the detection cylinder 536 to rotate through the thread, and since the detection cylinder 536 is slidably connected to the detection shell 531, it can only slide up and down along the inner wall of the detection shell 531, thereby converting the rotation into sliding, and the detection cylinder 536 slides upward to squeeze the detection spring 532, and the detection cylinder 536 is rotated. After being compressed, the spring 532 applies elastic force to the slide 535. The slide 535 is compressed and squeezes the first piezoelectric element 534. The first piezoelectric element 534 generates an electric charge under the squeezing of the first diaphragm 533 and the slide 535, and transmits the electric charge to the control system through the wire. The control system records the strength of the received electric signal. As the rotation angle of the rotating ring 56 increases, the toothed disc 538 drives the detection column 537 to rotate more circles. The higher the rising height of the detection tube 536, the greater the squeezing force of the detection spring 532 on the first piezoelectric element 534, and the electric signal received by the control system is enhanced. The control system analyzes the rotation angle of the transmission ring through the strength of the electric signal.

[0051] When the positioning pin 524 rotates to the position of the feed port on the side of the material disc, the positioning pin 524 loses the support of the side of the material disc, the return spring 526 rebounds and drives the positioning pin 524 to slide, and the positioning pin 524 slides and extends into the feed port. When the positioning pin 524 slides, it produces a relative displacement with the fixed bracket 525 opposite to the previous one. The piston 5252 slides and squeezes in the compression chamber 5242, so that the volume of the compression chamber 5242 is reduced, and the pressure in the compression chamber 5242 is increased. The medium in the compression chamber 5242 is squeezed into the airbag 527 through the flow channel 5241, causing the airbag 527 to expand. The airbag 527 expands in the feed port of the material disc, so that the positioning pin 524 can lock the feed port. At the same time, the moment the positioning pin 524 completely slides into the feed port, the drawer on the rear tray 5243 is The head just squeezes the second piezoelectric element 5232 in the second diaphragm 5231. After the control system receives the electrical signal from the second piezoelectric element 5232, it turns off the drive motor 541 and records the strength of the electrical signal from the first piezoelectric element 534. The rotation angle of the rotating ring 56 can be analyzed through the electrical signal from the first piezoelectric element 534 at this time. At the same time, this angle is also the angle of the feed port. According to the installation requirements of the feed port angle, the control system subtracts the current angle of the feed port from the angle required for installation, thereby deriving the angle that the feed port needs to be adjusted. The control system starts the drive motor 541 again. The drive motor 541 drives the rotating ring 56 to rotate to the corresponding angle through the gears. The rotating ring 56 drives the material disk to rotate around the mold column through the positioning pin 524, thereby completing the adjustment of the material disk angle.

[0052] The control system controls the angle adjustment component 5 to reset, and uses the electric clamping device to fix the adjusted material disc, repeats the previous steps, stacks the next material disc on the installed material disc and adjusts the angle until the material disc is installed. The control system turns on the electric lifting platform 41, and the electric lifting platform 41 drives the base equipped with the mold column to rise, so that the base fits tightly with the bottom material disc, and finally installs the end cover on the top material disc, and uses the electric mechanical arm 2 to tighten the bolts to achieve the overall installation of the multi-layer co-extrusion blown film mold.

[0053] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An assembly device for a multi-layer co-extrusion blown film die, characterized in that: The assembly device comprises a base (1), a plurality of electric mechanical arms (2) are mounted on the base (1), a positioning and mounting assembly (3) is mounted on the base (1), a bottom support assembly (4) is mounted on the base (1), and an angle adjustment assembly (5) is mounted on the base (1); the angle adjustment assembly (5) comprises a third electric telescopic rod (51), the third electric telescopic rod (51) is mounted on the base (1), an adjustment tray (55) is mounted on the output shaft of the third electric telescopic rod (51), and the adjustment tray (55) is mounted on the output shaft of the third electric telescopic rod (51). A rotating ring (56) is rotatably mounted on the tray (55), and gear teeth (561) are provided on the rotating ring (56). An adjusting and fixing assembly (52) is slidably mounted on the rotating ring (56). A driving assembly (54) is mounted on the adjusting tray (55), and the driving assembly (54) and the rotating ring (56) are meshed and transmitted through the gear teeth (561). An angle detector (53) is rotatably mounted on the adjusting tray (55), and the angle detector (53) and the rotating ring (56) are meshed and transmitted through the gear teeth (561).

2. The assembly device of a multi-layer co-extrusion blown film mold according to claim 1, characterized in that: The adjusting and fixing assembly (52) comprises a fixing bracket (525) and a fourth electric telescopic rod (522); the fixing bracket (525) is slidably mounted on a rotating ring (56); a top supporting plate (5251) is provided on the fixing bracket (525); a cross bar (5253) is provided on the fixing bracket (525); a piston (5252) is provided on the cross bar (5253); the fourth electric telescopic rod (522) is mounted on the adjusting tray (55); and an output shaft of the fourth electric telescopic rod (522) is connected to the fixing bracket (525).

3. The assembly device of a multi-layer co-extrusion blown film mold according to claim 2, characterized in that: The adjusting and fixing assembly (52) further comprises a positioning pin (524) and a cylinder (521), wherein the positioning pin (524) is slidably mounted on a fixing bracket (525), and the cylinder (521) is mounted on a top supporting plate (5251). A reset detection ring (523) is mounted on an output shaft of the cylinder (521), and the reset detection ring (523) is slidably connected to the positioning pin (524). The positioning pin (524) passes through the reset detection ring (523), and a reset spring (526) is mounted between the positioning pin (524) and the fixing bracket (525). A rolling ball (528) is rotatably mounted on one end of the positioning pin (524), and an air bag (527) is mounted on the positioning pin (524), and the air bag (527) is connected to the inside of the positioning pin (524).

4. The assembly device of a multi-layer co-extrusion blown film mold according to claim 3, characterized in that: A ball groove (5246) is provided at one end of the positioning pin (524), and the ball (528) is rotatably installed in the ball groove (5246). A compression groove (5245) is provided on the positioning pin (524), and the cross bar (5253) is slidably connected to the positioning pin (524) through the compression groove (5245). A compression chamber (5242) is provided in the positioning pin (524), and the piston (5252) is slidably arranged in the compression chamber (5242). The compression chamber (5242) is filled with a compressible medium, and a fluid is provided in the positioning pin (524). A movable channel (5241), one end of the flow channel (5241) is connected to the compression chamber (5242), the other end of the flow channel (5241) is connected to the inside of the airbag (527), the other end of the positioning pin (524) is provided with a rear tray (5243), the positioning pin (524) is provided with a front tray (5244), a return spring (526) is provided between the front tray (5244) and the fixed bracket (525), and the rear tray (5243) is provided with a contact (5247), and the contact (5247) corresponds to the position of the second diaphragm (5231).

5. The assembly device of a multi-layer co-extrusion blown film mold according to claim 3, characterized in that: A second diaphragm (5231) is installed in the reset detection ring (523), and a second piezoelectric element (5232) is installed between the second diaphragms (5231).

6. The assembly device for a multi-layer co-extrusion blown film mold according to claim 1, characterized in that: The angle detector (53) comprises a detection housing (531) and a toothed disc (538). The detection housing (531) is mounted on an adjustment tray (55). The toothed disc (538) is rotatably mounted on the adjustment tray (55). The toothed disc (538) and the adjustment tray (55) are meshed and driven via gear teeth (561). The toothed disc (538) is rotatably connected to the bottom end of the detection housing (531). A detection column (537) is mounted on the toothed disc (538). The detection column (537) is provided with a thread. A detection cylinder (536) is slidably installed in the shell (531), and an internal thread is provided in the detection cylinder (536). The detection cylinder (536) is threadedly connected to the detection column (537). A slide plate (535) is slidably installed in the detection shell (531), and a first diaphragm (533) is installed on the detection shell (531). A first piezoelectric element (534) is installed between the first diaphragm (533) and the slide plate (535), and a detection spring (532) is installed between the slide plate (535) and the detection cylinder (536).

7. The assembly device of a multi-layer co-extrusion blown film mold according to claim 1, characterized in that: The positioning and mounting assembly (3) comprises a first electric telescopic rod (31), the first electric telescopic rod (31) being mounted on a base (1), a supporting disc frame (32) being mounted on an output shaft of the first electric telescopic rod (31), a second electric telescopic rod (33) being slidably mounted on the supporting disc frame (32), an L-shaped supporting fork (34) being mounted on the output shaft of the second electric telescopic rod (33), a first connecting rod (36) being mounted on the L-shaped supporting fork (34), a deviation correction block (35) being mounted on one end of the first connecting rod (36), and the L-shaped supporting fork (34) being slidably connected to the supporting disc frame (32).

8. The assembly device for a multi-layer co-extrusion blown film mold according to claim 1, characterized in that: The base (1) is also provided with a support rod (11), and a support ring (12) is provided on the support rod (11); the bottom support assembly (4) comprises an electric lifting platform (41), and a bottom tray (42) is provided on the electric lifting platform (41); the driving assembly (54) comprises a driving motor (541), and an output shaft of the driving motor (541) passes through an adjusting tray (55) and is provided with an adjusting gear (542), and the adjusting gear (542) is meshed with a rotating ring (56) for transmission through gear teeth (561).

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