An injection molding production line

Abstract

The present invention proposes an injection molding production line, including a ring-shaped production line track and a number of mold carts equipped with molding molds; a ring-shaped power supply busbar is arranged on the upper part of the production line track, and the mold cart is provided with an electrical connection structure capable of electrically contacting the ring-shaped power supply busbar; the mold cart also has wheels and an electric drive module that drives the wheels to rotate to move the vehicle body, and the electric drive module is electrically connected to the electrical connection structure; the mold cart is located on the production line track and can move on the production line track, and the production line is also provided with an injection station and a demolding station. The mold cart on the production line of the present invention is located on the production line track, and the mold cart has an electric drive module and an electrical connection structure, so that the mold cart can move on the production line track by itself, and each mold cart can move independently, and the stop of a mold cart will not cause other mold carts to stop moving, and the production efficiency is high.

Description

Technical Field

[0001] The invention belongs to the technical field of injection molding, and in particular relates to an injection molding production line. Background Art

[0002] Foam molding is the process of injecting liquid polymer mixture (such as polyurethane AB material) into a mold for foam molding. Injection foam molding technology is a one-time molding method with high production efficiency and good product quality. It is suitable for foam plastic products with complex shapes and strict dimensional requirements. It is the main method for producing structural foams.

[0003] With the development of foaming molding technology, in order to increase production and reduce labor intensity, highly automated foaming production lines are gradually becoming popular, such as annular foaming production lines. This type of annular foaming production line generally includes an annular conveyor chain and several foaming molds. Each foaming mold is fixed on a separate car body to form a mold car, and several mold cars are arranged on the periphery of the annular conveyor chain. The motor drives the power gear to rotate through the reducer, and the power gear drives the annular conveyor chain to rotate. One end of the connecting rod is fixed on the annular conveyor chain, and the other end of the connecting rod is fixed on the mold car body, so that the mold car moves with the annular transmission chain.

[0004] In the above technical solution, each mold cart moves under the drive of the circular transmission chain, and the mold cart cannot move independently. When one mold cart stops moving to open the mold and take out the parts, the entire transmission chain needs to stop moving, that is, all mold carts stop moving, which affects production efficiency; and the entire circular production line is in motion, which requires large power and high energy consumption. Summary of the invention

[0005] The present invention aims to solve the technical problems existing in the prior art. The purpose of the present invention is to provide an injection molding production line to solve the problem that each mold vehicle cannot move independently and the production efficiency is low.

[0006] To achieve the above object, the present invention adopts the following technical solution: an injection molding production line, comprising a circular production line track and a plurality of mold carts equipped with molding molds;

[0007] A ring-shaped power supply busbar is arranged on the upper part of the production line track, and an electrical connection structure capable of electrically contacting the ring-shaped power supply busbar is arranged on the mold cart; the mold cart also has wheels and an electric drive module for driving the wheels to rotate to move the vehicle body, and the electric drive module is electrically connected to the electrical connection structure; the mold cart is located on the production line track and can move on the production line track, and an injection station and a demolding station are also arranged on the production line.

[0008] In the above technical solution, the mold car is located on the production line track. The mold car has an electric drive module and an electrical connection structure, so that the mold car can move on the production line track by itself. Each mold car can move independently, and the stop of a mold car will not cause other mold cars to stop moving, so the production efficiency is high. Moreover, when working, the mold car moves, and the production line track does not move. Compared with the existing technology that uses a transmission chain to drive the mold car to move, this solution has lower energy consumption.

[0009] In a preferred embodiment of the present invention, a spare track is further included, and a mold trolley replacement structure is provided between the spare track and the production line track; the mold trolley replacement structure can transport the mold trolley on the production line track to the spare track, or transport the mold trolley on the spare track to the production line track.

[0010] The above technical solution, through the spare track and the mold cart replacement structure, can quickly replace the mold cart from the production line track, thereby shortening the time for replacing the mold cart when switching products; the replaced mold cart can stay on the spare track or on the ground, and then be disassembled by workers, which will not affect the work of the production line and shorten the production stoppage time.

[0011] In a preferred embodiment of the present invention, the mold vehicle replacement structure includes a movable track and a vehicle replacement drive mechanism, the spare track has a second opening, and the production line track is provided with a first opening corresponding to the second opening;

[0012] The car-changing driving mechanism can drive the movable track to run at least between the first opening of the production line track and the second opening of the standby track, and the car-changing driving mechanism can drive the movable track to move from the first opening to the second opening, or from the second opening to the first opening;

[0013] The mold vehicle replacement structure has a normal state and a replacement state; in the normal state, the movable track is located at the first opening and connected to the production line track as a whole; in the replacement state, the movable track is located at the second opening and connected to the spare track as a whole.

[0014] In the above technical solution, in normal state, the movable track is located at the first opening and is connected to the production line track as a whole, and the mold cart can move in circles on the production line track without affecting the normal operation of the production line. When the mold cart needs to be replaced, the mold cart is located on the movable track, and then the car-changing drive mechanism causes the movable track to be separated from the production line track and integrated with the spare track, and the mold cart moves with the movable track to the spare track; after the mold cart is replaced, the car-changing drive mechanism causes the movable track to be separated from the spare track and integrated with the production line track, and the replaced mold cart moves with the movable track to the production line track, thereby replacing the mold cart from the production line track.

[0015] In a preferred embodiment of the present invention, the vehicle-changing drive mechanism includes a telescopic shaft and a telescopic drive component for driving the telescopic shaft to extend or shorten, the telescopic shaft is directly or indirectly fixed to the movable track, and the telescopic drive component drives the telescopic shaft to extend or shorten so that the movable track is located at the first opening or the second opening.

[0016] The telescopic drive member extends or shortens the replacement telescopic shaft, so that the movable track is integrated with the production line track or with the spare track, with a simple structure and reliable operation.

[0017] In a preferred embodiment of the present invention, the spare track is located outside the production line track, and one end of the spare track has a slope section arranged to be tilted downward, so as to facilitate the mold vehicle to slide from the spare track to the ground or from the ground to the spare track.

[0018] In another preferred embodiment of the present invention, the forming mold on the mold vehicle comprises a mold body, a locking structure and a mold driving mechanism; the mold body comprises a first half mold body and a second half mold body that can rotate relative to the first half mold body to open or close the mold; the locking structure has a locked state and an unlocked state;

[0019] When the locking structure is in the unlocked state, the mold driving mechanism can drive the second half mold body to rotate relative to the first half mold body to open or close the mold;

[0020] After the mold is closed, the locking structure is in a locking state to lock and fix the first half mold body and the second half mold body; after the mold is closed, the mold driving mechanism drives the second half mold body to rotate and makes the first half mold body rotate together with the second half mold body.

[0021] In the above technical solution, the first half mold body and the second half mold body are rotatably connected, and then the first half mold body and the second half mold body are locked and fixed together through a locking structure; a set of mold driving mechanism can realize the opening and closing of the mold body, and tilt the mold body, with a simple structure and small size.

[0022] In another preferred embodiment of the present invention, the mold driving mechanism includes a fixed mounting frame and a mold driving motor that can rotate forward and reverse, the output shaft of the mold driving motor is coaxially fixed with a driving gear, the driving gear is meshed with a driven gear fixed to the second half mold body, the driven gear is coaxially connected with a support shaft, and the support shaft is rotatably connected or fixedly connected to the mounting frame;

[0023] When the support shaft is rotationally connected to the mounting frame, the driven gear is coaxially fixedly connected to the support shaft; when the support shaft is fixedly connected to the mounting frame, the driven gear is rotationally connected to the support shaft.

[0024] In the above technical solution, the mold driving motor rotates to rotate the driving gear, and the driving gear rotates to rotate the driven gear in the opposite direction. Since the driven gear is fixed to the second half mold body, the rotation of the driven gear causes the second half mold body to rotate around the axis of the support shaft. The motor drive method has a simple structure and reliable movement.

[0025] In another preferred embodiment of the present invention, an injection device is provided at the injection station, the injection device comprises a material pipe, an injection seat and an injection gun head mounted on the injection seat, the material pipe is made of a flexible material, one end of the material pipe is fixedly connected to the injection seat and communicated with the interior thereof, and the other end of the material pipe is communicated with the material box;

[0026] The injection device also includes a fixed bearing platform, on which a lateral driving mechanism for causing the injection seat to move laterally and / or a vertical driving mechanism for causing the injection seat to move vertically is provided;

[0027] When the injection seat moves, the injection gun head on the injection seat and the injection port of the molding mold have a close state and a distant state. When in the close state, the injection gun head can dock with the injection port of the molding mold.

[0028] In the above technical solution, the position of the injection gun head can be changed with the injection seat, and the injection gun head of the injection device can dock and disconnect with the injection port of the molding mold on the mold car moving to the injection station on the production line, and there is no need to manually hold the injection gun head to complete the docking and disconnection work. After injecting raw materials for the previous mold car, disconnect it and restore the initial position, and when the next mold car moves to the injection station, it moves again and docks with it to inject raw materials.

[0029] In another preferred embodiment of the present invention, the electrical connection structure includes two carbon brushes staggered in height, and when the mold vehicle is located on the production line track, the two carbon brushes are electrically contacted with the positive and negative electrodes of the annular power supply busbar respectively.

[0030] In another preferred embodiment of the present invention, a proximity switch and a wireless transmitting device are provided at the front end of the injection station and the demolding station, and a wireless receiving device is correspondingly installed on each mold vehicle. The proximity switch senses the passing of the mold vehicle and sends deceleration information to the wireless receiving device through the wireless transmitting device. The wireless receiving device transmits the deceleration information to the electric drive module to achieve deceleration of the mold vehicle.

[0031] Alternatively, proximity switches are provided at the front ends of the injection station and the demolding station to pre-detect objects, and proximity switches are installed on the mold cart. After the proximity switches sense the pre-detect objects, they send deceleration information to the electric drive module to achieve deceleration of the mold cart.

[0032] Therefore, the mold cart automatically slows down before reaching the injection station or the demolding station, reducing the inertia of the mold cart when it stops; and there is no need to manually press the emergency stop button on the mold cart to stop the mold cart at the injection station or the demolding station, reducing the labor intensity of people.

[0033] The beneficial effects of the above technical solution are as follows: Additional aspects and advantages of the present invention will be partially given in the following description, partially become apparent from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0035] Figure 1 It is a structural schematic diagram of the injection molding production line of an embodiment of the present application.

[0036] Figure 2 yes Figure 1 Schematic diagram of the layout of the injection molding production line and high-pressure injection equipment.

[0037] Figure 3 yes Figure 1 The structural diagram of the mold car replacement structure, the replacement structure is in normal state.

[0038] Figure 4 yes Figure 3 Structural schematic diagram of the mold cart replacement structure when it is in the replacement state.

[0039] Figure 5 This is a state diagram of the mold trolley being on the movable track when the mold trolley replacement structure is in normal state.

[0040] Figure 6 This is a state diagram of the mold trolley being located on the movable track when the mold trolley replacement structure is in the replacement state.

[0041] Figure 7 It is a schematic diagram of the main stereoscopic structure of the mold vehicle in the second embodiment.

[0042] Figure 8 It is a rear perspective structural schematic diagram of the mold vehicle in the second embodiment.

[0043] Fig. 9 yes Figure 7 and Figure 8 The main perspective structural diagram of the forming mold in FIG. 1 is a schematic diagram of the main perspective structure of the forming mold. For ease of observation, the supporting parts are omitted in the figure.

[0044] Fig.10 yes Fig. 9 The bottom view of the three-dimensional structure of the forming mold is schematically shown in FIG. 1 . For ease of observation, the supporting member is omitted in the figure.

[0045] Fig.11 yes Fig. 9 Schematic diagram of the state of the molding mold when it is tilted.

[0046] Fig.12 It is a schematic diagram of the structure of the injection device of the fourth embodiment.

[0047] Fig.13 yes Fig.12 The enlarged view of the part P in the figure shows that the cleaning plate is far away from the injection pipette tip.

[0048] Fig.14 yes Fig.13 Schematic diagram of the top view of the gun tip cleaning assembly.

[0049] Fig.15 It is a schematic diagram of the state in which the cleaning disk in the injection device is facing the injection gun head.

[0050] Fig.16 yes Fig.15 Schematic diagram of the top view of the gun tip cleaning assembly.

[0051] The reference numerals in the drawings of the specification include: mold vehicle M, molding mold 100, mold injection port 101, mold body 110, first half mold body 10, offset block 11, second half mold body 20, mold drive motor 31, motor mounting plate 311, driving gear 32, driven gear 33, support shaft 34, first fixing block 351, second fixing block 352, bearing seat 36, first mounting plate 371, second mounting plate 372, side plate 373, first connecting block 381, The second connecting block 382, ​​the leaning member 39, the locking structure 40, the vehicle body 200, the wheel 210, the electric drive module 220, the electrical connection structure 230, the first carbon brush 231, the second carbon brush 232, the injection device 500, the frame 51, the bearing platform 511, the shield 512, the support frame 52, the bottom support plate 521, the vertical support plate 522, the top support plate 523, the reinforcing rib 524, the mounting frame 53, the connecting plate 531, the horizontal support plate 532, and the vertical mounting plate 53 3. Material pipe 541, injection seat 542, injection gun head 543, vertical cylinder 55, vertical cylinder telescopic shaft 551, horizontal slide rail 561, horizontal slider 562, vertical slide rail 563, vertical slider 564, cantilever plate 571, cleaning plate 572, cleaning member 5721, hinge 573, cleaning motor 574, transmission mechanism 575, connecting rod 576, cleaning cylinder 577, cleaning cylinder telescopic shaft 5771, mold car replacement structure 600, first opening 6 11. Second opening 621, movable track 630, bottom plate 641, replacement of telescopic shaft 642, telescopic drive member 643, replacement of slide rail 644, replacement of slider 645, mounting seat 646, first fixed plate 647, second fixed plate 648, production line track 700, injection station 710, demolding station 720, proximity switch 730, high-pressure injection equipment 740, support platform 750, spare track 800, ramp section 810, annular power supply busbar 900. DETAILED DESCRIPTION

[0052] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0053] In the description of the present invention, it is necessary to understand that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0054] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0055] Embodiment 1

[0056] This embodiment provides an injection molding production line, such as Figure 1 As shown, in a preferred embodiment of the present invention, it includes a circular production line track 700 and a plurality of mold vehicles M equipped with molding molds. The production line track 700 is fixedly installed on the ground through a support. The production line is provided with an injection station 710 and a demoulding station 720. Figure 2 As shown, a high-pressure injection device 740 (such as a high-pressure foaming device or a high-pressure injection molding device) is provided above the injection molding production line. The high-pressure injection device 740 is erected above the injection molding production line through a support platform 750, and the material pipe outlet of the high-pressure injection device 740 can extend to the injection station 710.

[0057] like Figure 1 As shown, a ring-shaped power supply busbar 900 is provided on the upper part of the production line track 700, and the ring-shaped power supply busbar 900 is supported by a support fixed to the ground. Figure 7 and 8 As shown, the mold vehicle M is provided with an electrical connection structure 230 capable of electrically contacting the annular power supply busbar 900, and the mold vehicle M also has wheels 210 and an electric drive module 220 that drives the wheels to rotate to move the mold vehicle M, and the electric drive module 220 is electrically connected to the electrical connection structure 230. When working, the mold vehicle M is located on the production line track 700 and can move on the production line track 700.

[0058] like Figure 7As shown, in this embodiment, the mold vehicle M includes a vehicle body 200 and a molding mold 100. The molding mold 100 is mounted on the vehicle body 200 and can move with the vehicle body 200. A start button and an emergency stop button are provided on the vehicle body 200. Specifically, the top of the vehicle body 200 is open, the molding mold 100 is mounted on the vehicle body 200 and extends out from the top opening, and the top of the molding mold 100 has a mold injection port 101 connected to the mold cavity.

[0059] like Figure 7 As shown, wheels 210 are provided at the bottom of the vehicle body 200, and the number of wheels 210 is three or more. As shown in the figure, four wheels 210 are provided, two wheels 210 are provided at the front and rear, the two front wheels 210 are connected by one shaft, and the two rear wheels 210 are connected by another shaft. The production line track 700 is a double track, and the two wheels 210 on one side of the mold vehicle M slide and are clamped on one track, and the two wheels 210 on the other side slide and are clamped on the other track.

[0060] Combination Figure 8 As shown, the electrical connection structure 230 is provided on the back of the vehicle body 200, and includes two carbon brushes staggered in height, namely, a first carbon brush 231 and a second carbon brush 232. When the mold vehicle M moves on the production line track 700, the two carbon brushes are respectively electrically contacted with the positive and negative electrodes of the annular power supply busbar 900 above the production line track 700, providing power for the mold vehicle M, such as the method for powering the vehicle body on the production line disclosed in CN201120353777.8.

[0061] The working process is as follows: Figure 1 and Figure 7 As shown, the mold cart M moves on the production line track 700. When the mold cart M moves to the injection station 710, the emergency stop button is pressed, and the mold cart M stops moving. The worker injects the injection material in the high-pressure injection device 740 into the mold cavity from the mold injection port 101 on the mold cart M, or uses the injection device 500 to complete it. The injection device can adopt the existing technology or the injection device of Example 4. After the injection process is completed, the start button is pressed, and the mold cart M continues to move on the production line track 700. While the mold cart M moves, the raw material is molded in the mold cavity (such as foaming or curing). When the mold cart M moves to the demolding station 720, the mold cart M stops moving, and the worker opens the molding mold on the mold cart M or the molding mold automatically opens to open the mold, and then the worker separates the molded product from the molding mold. After the product is demolded, the molding mold is closed, and the mold cart M continues to move on the production line track 700, and the injection and demolding processes are repeated.

[0062] The injection molding production line can be a polyurethane foaming production line, or a molding production line for plastic or rubber products.

[0063] In another preferred embodiment of the present invention, when an injection device is used for injection, a clamping structure for positioning and clamping the position of the mold vehicle M is provided at the injection station 710, which may adopt existing technologies, such as the clamping device disclosed in CN201420187597.0, or the clamping mechanism disclosed in 201721433275.X.

[0064] like Figure 1 and Figure 7 As shown, in another preferred embodiment of the present invention, a proximity switch 730 and a wireless transmitting device (not shown in the figure) are provided at the front end of the injection station 710 and the demolding station 720, and the proximity switch 730 can be an infrared sensor; a wireless receiving device (not shown in the figure) is correspondingly installed on each mold vehicle M, and the proximity switch 730 senses the passage of the mold vehicle and sends the deceleration information to the wireless receiving device through the wireless transmitting device, and the wireless receiving device transmits the deceleration information to the electric drive module 220 to realize the deceleration of the mold vehicle M.

[0065] Before the mold cart M reaches the injection station 710 or the demolding station 720, the proximity switch 730 senses the passing of the mold cart M and sends the information to the wireless receiving device on the mold cart via the wireless transmitting device. The wireless receiving device transmits the deceleration information to the electric drive module 220 to decelerate the mold cart M, so that the mold cart M can stop at the injection station 710 and the demolding station 720.

[0066] It should be noted that a proximity switch can also be provided on each mold vehicle M, and a proximity switch pre-detection object can be provided at the front end of the injection station 710 and the demolding station 720. After the proximity switch senses the pre-detection object, it sends deceleration information to the electric drive module to achieve mold vehicle deceleration. For example, if the proximity switch is a Hall switch, the pre-detection object can be a magnet; for another example, if the proximity switch is a photoelectric proximity switch, the pre-detection object can be an object with a reflective surface.

[0067] The specific method for decelerating the mold vehicle M may adopt existing technologies, such as the method for decelerating the moving component and stopping it at a stop position disclosed in CN201410796917.7, or the method for decelerating the walking platform and stopping it at a preset position disclosed in CN201910199371.X, or the method for controlling the belt to decelerate and stop disclosed in CN201410534514.5.

[0068] like Figure 1As shown, in another preferred embodiment of the present invention, the production line also includes a spare track 800, which is also fixedly installed on the ground through a support, and a mold cart replacement structure 600 is provided between the spare track 800 and the production line track 700. The mold cart replacement structure 600 can transport the mold cart M on the production line track 700 to the spare track 800, or transport the mold cart M on the spare track 800 to the production line track 700. Preferably, the spare track 800 is located on the outside of the production line track 700, but it can also be located on the inside, above or below the production line track 700. Figure 3 and Figure 4 It can be seen that the standby track 800 has a second opening 621 , and the production line track 700 is provided with a first opening 611 corresponding to the second opening 621 .

[0069] The mold trolley replacement structure 600 includes a movable track 630 and a trolley changing drive mechanism. The trolley changing drive mechanism can drive the movable track 630 to operate at least between the first opening 611 of the production line track 700 and the second opening 621 of the spare track 800. Specifically, the trolley changing drive mechanism can drive the movable track 630 to move from the first opening 611 to the second opening 621, or from the second opening 621 to the first opening 611.

[0070] The mold car replacement structure 600 has a normal state and a replacement state; in the normal state, Figure 3 As shown, the movable track 630 is located at the first opening 611 and is connected to the production line track 700 as a whole; when changing state, as shown in FIG. Figure 4 As shown, the active track 630 is located at the second opening 621 and is connected to the standby track 800 as a whole.

[0071] When it is necessary to replace the mold vehicle M on the production line track 700, as shown in FIG. Figure 5 As shown, the mold vehicle M on the production line track 700 moves to the movable track 630 and stops, and then the vehicle change drive mechanism is operated, combined with Figure 6 It can be seen that the vehicle-changing driving mechanism moves the movable track 630 from the first opening 611 of the production line track 700 to the second opening 621 of the spare track 800, that is, the movable track 630 is separated from the production line track 700 and integrated with the spare track 800. The mold vehicle M moves with the movable track 630 to the second opening 621 of the spare track 800, and then people make the mold vehicle M slide on the spare track 800 and leave the movable track 630 to make way.

[0072] like Figure 3 and Figure 4As shown, after the mold cart M leaves the movable track 630 at the second opening 621 of the spare track 800, the car-changing driving mechanism moves the movable track 630 from the second opening 621 of the spare track 800 to the first opening 611 of the production line track 700, that is, the movable track 630 is separated from the spare track 800 and is integrated with the production line track 700 again. The above steps are repeated until all the mold carts M that need to be replaced leave the production line track 700. The mold carts M that leave the production line track 700 can be parked on one side of the second opening 621 on the spare track 800, for example, all parked on the right side of the second opening 621; or slide from the spare track 800 to the ground and park on the ground; leaving a channel for subsequently transporting other mold carts M to the production line track 700.

[0073] Next, the specific process of transporting the mold cart M to the production line track 700 is as follows: when the active track 630 and the spare track 800 are integrated, people move the mold cart M to be replaced to the spare track 800, such as Figure 6 As shown, the mold vehicle M slides on the spare track 800 to the active track 630, as shown in FIG. Figure 5 As shown, the vehicle-changing driving mechanism then causes the active track 630 to separate from the spare track 800 and merge with the production line track 700. Then people make the mold vehicle M slide on the production line track 700 and leave the active track 630. After the mold vehicle M leaves the active track 630, the vehicle-changing driving mechanism causes the active track 630 to separate from the production line track 700 and merge with the spare track 800 again, so as to facilitate the transportation of the next mold vehicle M to the production line track 700. The above steps are repeated until all the mold vehicles M to be replaced are transported to the production line track 700. After the active track 630 is merged with the production line track 700, the replaced mold vehicle M can work on the production line.

[0074] With such a technical solution, in normal conditions, the movable track 630 is located at the first opening 611 and is connected to the production line track 700 as a whole. The mold cart M can move in circles on the production line track 700 without affecting the normal operation of the production line. When the mold cart M needs to be replaced, all the mold carts on the production line track 700 are first transported to the spare track 800 or the ground through the mold cart replacement structure 600. The molds of the products to be processed can be installed on other mold carts first. After the mold cart on the production line track 700 leaves, the other mold carts can be replaced on the production line track 700 to save downtime. Of course, in practice, the mold in the mold cart M can also be replaced on the spare track 800 or on the ground, and then the mold cart M can be transported to the production line track 700.

[0075] like Figure 1As shown, in another preferred embodiment of the present invention, the left end of the spare track 800 has a slope section 810 inclined downward, thereby facilitating the mold vehicle M to slide from the spare track 800 to the ground or from the ground to the spare track 800.

[0076] like Figure 3 and Figure 4 As shown, in another preferred embodiment of the present invention, the vehicle-changing driving mechanism includes a replacement telescopic shaft 642 and a telescopic driving member 643 for driving the replacement telescopic shaft 642 to extend or shorten. The replacement telescopic shaft 642 is directly or indirectly fixed to the movable track 630. The telescopic driving member 643 drives the replacement telescopic shaft 642 to extend or shorten so that the movable track 630 is located at the first opening 611 or the second opening 621. For example, if the telescopic driving member 643 is located on the inner side of the production line track 700, the telescopic driving member 643 extends the replacement telescopic shaft 642, and the replacement telescopic shaft 642 moves the movable track 630 from the first opening 611 to the second opening 621, that is, the movable track 630 is pushed from the production line track 700 to the spare track 800; the telescopic driving member 643 shortens the replacement telescopic shaft 642, and the replacement telescopic shaft 642 moves the movable track 630 from the second opening 621 to the first opening 611, that is, the movable track 630 is pulled back from the spare track 800 to the production line track 700.

[0077] In this embodiment, the telescopic driving member 643 can be, but is not limited to, a cylinder, a hydraulic cylinder or an electric cylinder. The telescopic driving member 643 is fixedly connected to the mounting seat 646 by bolts, and the mounting seat 646 is connected to the first fixing plate 647 by bolts, and the first fixing plate 647 is fixed to the ground by bolts.

[0078] The spare track 800 and the movable track 630 are double tracks like the production line track 700. The lower ends of the two tracks of the movable track 630 are connected to the base plate 641 by bolts. The two tracks of the movable track 630 are connected together through the base plate 641, and the end of the replacement telescopic shaft 642 away from the telescopic driving member 643 is fixedly connected to the base plate 641.

[0079] like Figure 3 and Figure 4As shown, in another preferred embodiment of the present invention, the car-changing driving mechanism further includes a fixed replacement rail 644, and a replacement slider 645 slidably connected to the replacement rail 644 is fixedly connected to the bottom plate 641. One end of the replacement rail 644 is located on the inner side of the production line track 700, and the other end of the replacement rail 644 extends to the edge of the spare track 800. Preferably, there are two replacement rails 644, and the two replacement rails 644 are respectively located on both sides of the telescopic driving member 643 and are arranged in parallel. In this embodiment, the movable track 630 is a linear track, the second opening 621 is arranged opposite to the first opening 611, and the replacement rail 644 is arranged perpendicular to the movable track 630.

[0080] One end of the replacement slide rail 644 located inside the production line track 700 is fixed to the first fixing plate 647 by bolts, and the other end of the replacement slide rail 644 is connected to the second fixing plate 648 by bolts, and the second fixing plate 648 is fixed to the ground by bolts. The first fixing plate 647 and the second fixing plate 648 are used to install and support the replacement slide rail 644. When the length of the replacement slide rail 644 is long, a support can be provided below the middle of the replacement slide rail 644 to improve the strength.

[0081] Embodiment 2

[0082] This embodiment provides a mold vehicle, which can be used in the injection molding production line of embodiment 1, and can move on the production line track. In a preferred embodiment, as shown in FIG. Figure 7 and 8 As shown, the mold vehicle M includes a vehicle body 200 and a molding die 100. Figure 9-11 As shown, the molding die 100 includes a die body 110, a locking structure 40 and a die driving mechanism. The die body 110 includes a first half die body 10 and a second half die body 20 that can rotate relative to the first half die body 10 to open or close the die. The locking structure 40 has a locked state and an unlocked state. The locking structure 40 can be an electric lock with automatic unlocking and automatic locking functions in the prior art, which can be but is not limited to the electric lock disclosed in CN201710228348.X or CN201510916066.X or CN201910011381.6, and the electric lock is electrically connected to the electrical connection structure 230.

[0083] When the locking structure 40 is in the unlocked state, the mold driving mechanism can drive the second mold half 20 to rotate relative to the first mold half 10 to open or close the mold. After closing the mold, the locking structure 40 is in the locked state to lock and fix the first mold half 10 and the second mold half 20; after closing the mold, the mold driving mechanism drives the second mold half 20 to rotate and the first mold half 10 rotates with the second mold half 20, so that the mold body 110 can be tilted.

[0084] In this embodiment, after the mold is closed, the accommodation space between the first half mold body 10 and the second half mold body 20 is a mold cavity, and a mold injection port 101 connected to the mold cavity is provided on the mold body 110. It should be noted that when an intermediate mold body is also provided between the first half mold body 10 and the second half mold body 20, the accommodation space between the first half mold body 10, the intermediate mold body and the second half mold body 20 is a mold cavity, and the specific structure of the mold cavity can adopt an existing structure, which is not an innovation of the present invention and will not be described in detail here.

[0085] like Fig. 9 As shown, this embodiment is described by taking the example that the mold body 110 is initially arranged vertically, the first half mold body 10 is arranged in front of the second half mold body 20, and the mold driving mechanism is arranged below the mold body 110. A locking structure 40 is respectively arranged on the left and right sides of the mold body 110. Of course, in practice, only one locking structure can be arranged at the front end of the mold body 110.

[0086] like Fig. 9 As shown, initially, the mold body 110 is vertically arranged and in a mold-closing state, and the injection material (such as foaming material, injection material) is first injected into the mold cavity of the molding mold 100 from the mold injection port 101 at the top of the mold body 110, and then the mold driving mechanism is started to rotate the second half mold body 20 forward (i.e., clockwise rotation as shown in FIG. 11) to a set angle and then stop. Since the first half mold body 10 and the second half mold body 20 are fixed together, the first half mold body 10 rotates forward with the second half mold body 20, thereby tilting the entire mold body 110, which is conducive to the foaming molding of the foaming material in the mold body 110.

[0087] When the mold needs to be opened to take out the molded product, when the mold vehicle M moves on the production line track 700 to the demoulding station, the locking structure 40 is in the unlocked state, the first half mold body 10 and the second half mold body 20 are unlocked, and then the mold driving mechanism is started to rotate the second half mold body 20 backward relative to the first half mold body 10 (i.e. Fig.11 The mold is opened by rotating the first mold half 10 counterclockwise as shown in the figure to a vertical position, during which the first mold half 10 is fixed on the mold vehicle M. The mold vehicle M stops after moving to the demolding position, and people can remove the molded product from the first mold half 10 or the second mold half 20.

[0088] After people take out the product, the mold vehicle M continues to move on the production line track 700, and the mold driving mechanism is started again to rotate the second half mold body 20 in the direction close to the first half mold body 10. After the second half mold body 20 is attached to the first half mold body 10, the second half mold body 20 stops rotating. Then the locking structure 40 is closed to put it in a locked state, so that the first half mold body 10 and the second half mold body 20 are locked and fixed together, and the mold closing process is completed. Next, the mold driving mechanism is started again to rotate the second half mold body 20 backward to a vertical position and restore the initial position, and the first half mold body 10 rotates backward to a vertical position with the second half mold body 20 and restores the initial position.

[0089] With such a technical solution, by providing a locking structure 40 and a mold driving mechanism, the second mold half 20 can be rotated relative to the first mold half 10 to open or close the mold, and the first mold half 10 can be rotated together with the second mold half 20 to set the mold body 110 vertically, tilted or horizontally. One set of mold driving mechanism can realize the opening and closing of the mold body 110, and tilting of the mold body 110.

[0090] In another preferred embodiment of the present invention, the mold driving mechanism includes a fixed frame and a mold driving motor 31 that can rotate forward and reverse. The mold driving motor 31 is installed on a fixed motor mounting plate 311 by bolts, and the motor mounting plate 311 is fixedly connected to the rear end of the vehicle body 200. The output shaft of the mold driving motor 31 is coaxially fixed with a driving gear 32 located on the left side thereof, and the front of the driving gear 32 is meshed with a driven gear 33 fixed to the second half mold body 20, and the driven gear 33 is coaxially fixed with a support shaft 34, and the support shaft 34 is rotatably connected to the fixed frame.

[0091] In this embodiment, the fixing frame includes a first fixing block 351 and a second fixing block 352 respectively located at the lower left and lower right of the mold body 110. Figure 7 As shown, the first fixing block 351 and the second fixing block 352 are respectively fixedly connected to the left and right sides of the interior of the vehicle body 200, such as by welding.

[0092] like Fig. 9 As shown, the first fixing block 351 and the second fixing block 352 are both connected with a bearing seat 36 by bolts, both ends of the support shaft 34 are supported by the bearing seat 36, and a bearing is provided between the bearing seat 36 and the support shaft 34 to reduce rotational friction.

[0093] The mold driving motor 31 rotates to rotate the driving gear 32, which in turn rotates the driven gear 33 in the opposite direction, and the driven gear 33 rotates the support shaft 34 on the fixed frame. Since the driven gear 33 is fixedly connected to the second half mold body 20, the rotation of the driven gear 33 causes the second half mold body 20 to rotate around the axis of the support shaft 34.

[0094] For example, when the mold body 110 is in a vertical state, the output shaft of the mold driving motor 31 rotates counterclockwise (from left to right), and the driven gear 33 drives the second half mold body 20 to rotate clockwise around the axis of the support shaft 34, so that the mold body 110 is in a vertical state. Fig.11 Similarly, if the output shaft of the mold driving motor 31 rotates clockwise (from left to right), the driven gear 33 drives the second half mold body 20 to rotate counterclockwise around the axis of the support shaft 34, so that the mold body 110 is in a Fig. 9 The vertical position is shown.

[0095] In another preferred embodiment of the present invention, the first half mold body 10 and the second half mold body 20 are rotatably connected by a hinge. Specifically, Fig.10 As shown, the hinge includes a first connection block 381 fixedly connected to the first half mold body 10, and a second connection block 382 fixedly connected to the second half mold body 20, the first connection block 381 is rotatably connected to the support shaft 34, and the second connection block 382 is fixedly or rotatably connected to the support shaft 34. Preferably, the first connection block 381 and the second connection block 382 are arranged in pairs, and one pair is arranged at the left and right parts of the mold body 110, so that the rotation connection between the first half mold body 10 and the second half mold body 20 is more stable.

[0096] like Fig.11 As shown, in this embodiment, a fixed leaning member 39 is provided on the front side of the first half mold body 10. The leaning member 39 is in the shape of a long strip. Figure 7 As shown, the leaning member 39 is welded to the front end of the vehicle body 200 and is arranged parallel to the first half mold body 10; at both ends of the front surface of the first half mold body 10, abutting blocks 11 arranged perpendicular to the leaning member 39 are fixedly connected. After the second half mold body 20 leaves the first half mold body 10, the first half mold body 10 leans on the leaning member 39 and is supported by it. It should be pointed out that in the tilted state, when the first half mold body 10 and the second half mold body 20 are fixed together, since the mold driving motor 31 has a self-locking function, at this time, the first half mold body 10 can lean on or not lean on the leaning member 39.

[0097] In another preferred embodiment of the present invention, the driven gear 33 is a fan-shaped gear, such as a fan-shaped gear with a 1 / 4 circumference, and the top of the fan-shaped gear is fixedly connected to the second half mold body 20; the radius of the driven gear 33 is greater than the radius of the driving gear 32, such as the radius of the driven gear 33 is three to ten times the radius of the driving gear 32.

[0098] Embodiment 3

[0099] The structural principle of this embodiment is basically the same as that of the second embodiment, except that, in this embodiment, the two ends of the support shaft 34 are respectively fixedly connected to the first fixed block 351 and the second fixed block 352 of the fixed frame, the driven gear 33 is rotatably connected to the support shaft 34, and a bearing is arranged between the driven gear 33 and the support shaft 34. The mold driving motor 31 rotates to rotate the driving gear 32, and the driving gear 32 rotates to rotate the driven gear 33 on the support shaft 34; since the support shaft 34 is fixedly arranged, the first connecting block 381 and the second connecting block 382 are both rotatably connected to the support shaft 34, so that the first half mold body 10 and the second half mold body 20 can rotate relative to the axis of the support shaft 34.

[0100] Embodiment 4

[0101] This embodiment provides an injection device, which can be used in the injection molding production line of the first embodiment. Figure 1 As shown, the injection device is arranged at the injection station 710. In a preferred embodiment, as shown in FIG. 13 , the injection device includes a material pipe 541, an injection seat 542 and an injection gun head 543 installed on the injection seat 542. The material pipe 541 is made of a flexible material. There are multiple material pipes 541, and the multiple material pipes 541 are arranged side by side. The lower end of the material pipe 541 is fixedly connected to the injection seat 542 and communicated with the interior thereof, and the other end of the material pipe 541 is communicated with the material box of the high-pressure injection device 740.

[0102] like Fig.12 As shown, the injection device also includes a fixed support platform 511, which is welded to a frame 51 fixed to the ground by bolts. In this embodiment, the support platform 511 is horizontally arranged. The support platform 511 is provided with a lateral drive mechanism for making the injection seat 542 move horizontally, and / or a vertical drive mechanism for making the injection seat 542 move vertically. When the injection seat 542 moves, the injection gun head 543 on the injection seat 542 has a close state and a distant state with the injection port of the molding mold (not shown in the figure). When in the close state, the injection gun head 543 can dock with the injection port 101 of the molding mold.

[0103] In this embodiment, the discharge port of the injection gun head 543 is set downward, and the injection port 101 of the molding mold is set upward. For example, the lower end of the discharge port of the injection gun head 543 and the upper end of the injection port of the molding mold are located at the same horizontal plane, and the horizontal drive mechanism causes the injection seat 542 to move horizontally, so that the injection gun head 543 can dock with the injection port of the molding mold; for another example, the discharge port of the injection gun head 543 is located directly above the injection port of the molding mold, and the vertical drive mechanism causes the injection seat 542 to move vertically downward, so that the injection gun head 543 can dock with the injection port of the molding mold; for another example, when the discharge port of the injection gun head 543 is located above the injection port of the molding mold and is horizontally staggered, the horizontal drive mechanism causes the injection seat 542 to move horizontally, and the vertical drive mechanism causes the injection seat 542 to move vertically downward, so that the injection gun head 543 can dock with the injection port of the molding mold.

[0104] With such a technical solution, the position of the injection gun head 543 can be changed with the injection seat 542. Initially, the injection gun head 543 is in a distant state. The mold vehicle M moves to the injection station 710 on the production line track 700 and stops. The injection gun head 543 moves with the injection seat 542 toward the direction of the molding mold injection port 101 on the mold vehicle and docks with it, and is in a close state; then the injection work is carried out. After the injection is completed, the injection gun head 543 is away from the molding mold injection port, disconnects them, resets and is in a distant state; the mold vehicle M that has completed the injection leaves the injection station 710, and the injection device injects raw materials for the next mold vehicle. The injection gun head 543 of the injection device can dock and disconnect with the molding mold injection port 101 on the mold vehicle M that moves to the injection station 710 on the production line track 700, and there is no need to manually hold the injection gun head 543 to complete the docking and disconnection work.

[0105] This embodiment is described by taking the simultaneous provision of a transverse driving mechanism and a longitudinal moving mechanism as an example. Fig.13 As shown, the transverse driving mechanism includes a support frame 52 that is transversely slidably connected to the carrier platform 511, and a transverse driving member ( Fig.13 The lateral drive member is located at Fig.12 The lateral drive member may be a lateral cylinder, and the telescopic shaft of the lateral cylinder is fixedly connected to the support frame 52. Of course, the lateral drive member may also be a lateral electric cylinder or a lateral hydraulic cylinder. The vertical drive mechanism includes a mounting frame 53 vertically slidably connected to the support frame 52, and a vertical drive member driving the mounting frame 53 to slide vertically on the support frame 52. The vertical drive member may be a vertical cylinder 55, a vertical electric cylinder or a vertical hydraulic cylinder. For example, in the case of the vertical cylinder 55, the telescopic shaft 551 of the vertical cylinder is fixedly connected to the support frame 52; the injection seat 542 is fixedly connected to the mounting frame 53, such as by welding or bolting.

[0106] like Fig.13As shown, in another preferred embodiment of the present invention, two transverse slide rails 561 disposed at intervals are connected to the bearing platform 511 by bolts, and each transverse slide rail 561 is transversely slidably connected to two transverse sliders 562 disposed at intervals and fixed to the support frame 52. A vertical slide rail 563 is fixedly connected to the support frame 52, and two vertical sliders 564 disposed at intervals and fixed to the mounting frame 53 are vertically slidably connected to the vertical slide rail 563.

[0107] The support frame 52 slides horizontally on the support platform 511 through the structure of the horizontal slider 562 and the horizontal slide rail 561, and the mounting frame 53 slides vertically on the support frame 52 through the structure of the vertical slider 564 and the vertical slide rail 563, thereby reducing friction, thereby reducing the output power of the horizontal drive member and the vertical drive member, and saving energy.

[0108] Specifically, Fig.13 As shown, the support frame 52 includes a bottom support plate 521 arranged horizontally, a vertical support plate 522 welded to the bottom support plate 521, and a top support plate 523 welded to the upper end of the vertical support plate 522, and a triangular reinforcing rib 524 is welded between the bottom support plate 521 and the vertical support plate 522. The horizontal slider 562 is welded to the lower end of the bottom support plate 521, the horizontal cylinder telescopic shaft is fixedly connected to the bottom support plate 521, the vertical slide rail 563 is installed on the vertical support plate 522 by bolts, the reinforcing rib 524 is located on the left side of the vertical support plate 522, the vertical slide rail 563 is located on the left side of the vertical support plate 522, the vertical cylinder 55 is installed on the top support plate 523 by bolts, and the vertical cylinder telescopic shaft 551 is set downward.

[0109] The mounting frame 53 includes a vertically arranged connecting plate 531, two spaced horizontal support plates 532 welded to the connecting plate 531, and a vertical mounting plate 533 welded to the horizontal support plate 532. The vertical mounting plate 533 is arranged parallel to the connecting plate 531, and a triangular reinforcing rib 524 is also welded between the connecting plate 531 and the horizontal support plate 532. The vertical slider 564 is welded to the left end of the connecting plate 531, the lower part of the vertical cylinder telescopic shaft 551 is fixedly connected to the horizontal support plate 532, and the injection seat 542 is fixedly connected to the right end of the vertical mounting plate 533 by bolts.

[0110] like Fig.13 and Fig.14As shown, in another preferred embodiment of the present invention, the injection device also includes a gun tip cleaning assembly, which includes a cantilever plate 571 that can rotate relative to the injection seat 542, a cleaning disk 572 disposed on the cantilever plate 571, a first rotation drive mechanism that drives the cleaning disk 572 to rotate, and a second rotation drive mechanism that drives the cantilever plate 571 to rotate so that the cleaning disk 572 is close to or away from the injection gun tip 543. A cleaning piece 5721 is disposed on the cleaning disk 572, and the cleaning piece 5721 is a cleaning knife. There are two cleaning pieces 5721, and the two cleaning pieces 5721 are disposed circumferentially with respect to the axis of the cleaning disk 572. As shown in FIG. Fig.15 As shown, when the cleaning disk 572 is close to the injection gun head 543, the first rotation drive mechanism drives the cleaning disk 572 to rotate, and the cleaning member 5721 on the cleaning disk 572 can clean the slag at the discharge port of the injection gun head 543.

[0111] The second rotation drive mechanism is used to make the cleaning disc 572 approach or move away from the injection gun head 543; the cleaning disc 572 moves away from the injection gun head 543 to make way so that the injection gun head 543 can inject raw materials into the mold vehicle; when the cleaning disc 572 approaches and is directly below the injection gun head 543, the cleaning member 5721 on the cleaning disc 572 rotates accordingly to clean up the slag at the discharge port of the injection gun head 543. That is, the cleaning disc 572 can rotate and revolve, the cleaning disc 572 revolves to approach or move away from the injection gun head 543, and the cleaning disc 572 rotates to clean up the slag at the discharge port of the injection gun head 543.

[0112] Specifically, Fig.13 and Fig.14 As shown, the first rotation drive mechanism includes a cleaning motor 574 mounted on the cantilever plate 571 by bolts, the cleaning motor 574 is arranged on one end of the cantilever plate 571 away from the cleaning disk 572, the cantilever plate 571 is rotatably connected to the bottom support seat by a hinge 573, and the hinge 573 is located between the cleaning motor 574 and the cleaning disk 572. The output shaft of the cleaning motor 574 is connected to a transmission mechanism 575, and the output shaft of the transmission mechanism 575 is coaxially fixed with the cleaning disk 572. For example, the transmission mechanism 575 is a belt transmission mechanism, and the output shaft of the cleaning motor 574 is arranged downwardly, and the belt transmission mechanism is located below the cantilever plate 571. The power of the cleaning motor 574 is transmitted to the cleaning disk 572 through the belt transmission mechanism, so that it rotates.

[0113] The second rotation drive mechanism includes a cleaning cylinder 577 installed on the bottom support plate 521 by bolts, and a connecting rod 576 is rotatably connected to the telescopic shaft 5771 of the cleaning cylinder through a pin shaft, and the connecting rod 576 is hinged to the cantilever plate 571 by a hinge. When it is necessary to clean the slag at the discharge port of the injection gun head 43, as shown in FIG16, the cleaning cylinder 577 extends the telescopic shaft 5771 of the cleaning cylinder, and the telescopic shaft 5771 of the cleaning cylinder rotates the connecting rod 576, and the connecting rod 576 rotates the cantilever plate 571 around the hinge 573, so that the cleaning disk 572 on the cantilever plate 571 is close to the injection gun head 543 and is located directly below the injection gun head 543. After cleaning the slag, the cleaning cylinder 577 shortens the cleaning cylinder telescopic shaft 5771, and the cleaning cylinder telescopic shaft 5771 causes the cantilever plate 571 to rotate in the opposite direction around the hinge 573 through the connecting rod 576, so that the cleaning disk 572 on the cantilever plate 571 moves away from the injection gun head 543 to make way.

[0114] In the description of this specification, the description with reference to the terms "preferred embodiment", "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0115] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An injection molding production line, characterized in that: It includes a circular production line track and a number of mold carts equipped with forming molds; An annular power supply busbar is arranged on the upper part of the production line track, and an electrical connection structure capable of electrically contacting the annular power supply busbar is arranged on the mold vehicle; The mold vehicle also has wheels and an electric drive module for driving the wheels to rotate so as to move the vehicle body, and the electric drive module is electrically connected to the electrical connection structure; The mold vehicle is located on the production line track and can move on the production line track. The production line is also provided with an injection station and a demoulding station; The molding die on the die vehicle comprises a die body, a locking structure and a die driving mechanism; the die body comprises a first half die body and a second half die body which can rotate relative to the first half die body to open or close the die; the locking structure has a locking state and an unlocking state; When the locking structure is in the unlocked state, the mold driving mechanism can drive the second half mold body to rotate relative to the first half mold body to open or close the mold; After the mold is closed, the locking structure is in a locking state to lock the first half mold body and the second half mold body and fix them together; after the mold is closed, the mold driving mechanism drives the second half mold body to rotate and makes the first half mold body rotate together with the second half mold body; By setting a locking structure and a mold driving mechanism, the second mold half can be rotated relative to the first mold half to open or close the mold, and the first mold half can be rotated together with the second mold half to set the mold body vertically, obliquely or horizontally; The mold driving mechanism comprises a fixed mounting frame and a mold driving motor which can rotate forward and reversely, wherein the output shaft of the mold driving motor is coaxially fixedly connected with a driving gear, the driving gear is meshed with a driven gear which is fixedly connected with the second half mold body, the driven gear is coaxially connected with a supporting shaft, and the supporting shaft is rotatably connected or fixedly connected with the mounting frame; When the support shaft is rotationally connected to the mounting frame, the driven gear is coaxially fixedly connected to the support shaft; when the support shaft is fixedly connected to the mounting frame, the driven gear is rotationally connected to the support shaft.

2. An injection molding production line as claimed in claim 1, characterized in that: It also includes a spare track, and a mold car replacement structure is arranged between the spare track and the production line track; the mold car replacement structure can transport the mold car on the production line track to the spare track, or transport the mold car on the spare track to the production line track.

3. An injection molding production line as claimed in claim 2, characterized in that: The mold car replacement structure includes a movable track and a car-changing drive mechanism, the spare track has a second opening, and the production line track is provided with a first opening corresponding to the second opening; The vehicle switching drive mechanism can drive the movable track to run at least between the first opening of the production line track and the second opening of the standby track, and the vehicle switching drive mechanism can drive the movable track to move from the first opening to the second opening, or from the second opening to the first opening; The mold vehicle replacement structure has a normal state and a replacement state; in the normal state, the movable track is located at the first opening and is connected to the production line track as a whole; in the replacement state, the movable track is located at the second opening and is connected to the spare track as a whole.

4. An injection molding production line as claimed in claim 3, characterized in that: The vehicle-changing driving mechanism comprises a telescopic shaft and a telescopic driving member for driving the telescopic shaft to extend or shorten. The telescopic shaft is directly or indirectly fixed to the movable track. The telescopic driving member drives the telescopic shaft to extend or shorten so that the movable track is located at the first opening or the second opening.

5. An injection molding production line as claimed in claim 2, characterized in that: The spare track is located outside the production line track, and one end of the spare track has a slope section arranged to be inclined downward.

6. An injection molding production line as claimed in claim 1, characterized in that: The injection station is provided with an injection device, which includes a material pipe, an injection seat and an injection gun head mounted on the injection seat. The material pipe is made of a flexible material, one end of the material pipe is fixedly connected to the injection seat and communicated with the interior thereof, and the other end of the material pipe is communicated with the material box; The injection device further comprises a fixedly arranged bearing platform, on which a lateral driving mechanism for causing the injection seat to move laterally and / or a vertical driving mechanism for causing the injection seat to move vertically is provided; When the injection seat moves, the injection gun head on the injection seat and the injection port of the molding mold have a close state and a distant state. When in the close state, the injection gun head can dock with the injection port of the molding mold.

7. An injection molding production line according to any one of claims 1 to 6, characterized in that: The electrical connection structure includes two carbon brushes that are staggered in height. When the mold vehicle is located on the production line track, the two carbon brushes are electrically in contact with the positive electrode and the negative electrode of the annular power supply busbar respectively.

8. An injection molding production line as claimed in claim 7, characterized in that: A proximity switch and a wireless transmitter are provided at the front end of the injection station and the demoulding station. A wireless receiver is installed on each mold vehicle. The proximity switch senses the mold vehicle passing by and sends deceleration information to the wireless receiver through the wireless transmitter. The wireless receiver transmits the deceleration information to the electric drive module to achieve deceleration of the mold vehicle. Alternatively, the front ends of the injection station and the demolding station are both provided with proximity switches for pre-detection of objects, and the mold cart is equipped with proximity switches. After the proximity switches sense the pre-detection objects, they send deceleration information to the electric drive module to achieve deceleration of the mold cart.

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