A new mold transfer guide device

Abstract

This invention relates to a novel mold-shifting guide device, belonging to the technical field of injection molding equipment. It includes a frame, two outer limiting mechanisms, two sliding feet, and a disassembly / assembly mechanism. Both sliding feet are slidably mounted on the top surface of the frame, and a movable mold plate is mounted on each sliding foot. The two outer limiting mechanisms are mounted on the top surface of the frame, with their inner surfaces slidably fitted against the outer surfaces of the sliding feet. The disassembly / assembly mechanism is mounted on the frame and detachably connected to the movable mold plate. The disassembly / assembly mechanism is connected to the frame via a lead screw, which is used to adjust the lateral position of the disassembly / assembly mechanism. Each outer limiting mechanism includes an outer limiting strip and a locking rod. Both the locking rod and the outer limiting strip have several screw holes, which correspond to and match the screw holes of the locking rod and the outer limiting strip. The locking rod and the outer limiting strip are detachably connected via bolts that mate with the screw holes. Each sliding foot, in conjunction with the locking rod, has a locking mechanism. This design balances cost and the efficiency of repositioning the movable mold plate.

Description

Technical Field

[0001] This invention belongs to the field of injection molding equipment technology, and specifically relates to a novel mold moving guide device. Background Technology

[0002] An injection molding machine is a machine that performs the injection molding process. For example, a two-platen injection molding machine mainly consists of a fixed platen and a moving platen. During the continuous dry cycle of production in a two-platen injection molding machine, the moving platen needs to constantly move closer to and fit against the fixed platen or move away from it. Since the injection mold consists of two half-molds installed on the fixed platen and the moving platen respectively, the moving platen needs to maintain the accuracy of its movement direction during the continuous approach and departure process. Otherwise, the injection molded product will be affected after the two half-molds are combined.

[0003] Traditional mold-moving guide structures use tie rod holes on the moving mold platen to guide the moving mold platen, with copper sleeves placed inside the tie rod holes. However, the gap between the tie rod and the copper sleeve is designed to be relatively small. In actual assembly, due to machining accuracy issues, the tie rod often has difficulty penetrating the copper sleeve, affecting assembly progress or causing abnormal noise, thus impacting quality. To address this, Chinese patent CN110239029A discloses a motion guide device for a moving mold platen in injection molding and an injection molding machine. The device includes a frame and lateral guide components fitted on the outer sides of two sliding feet of the moving mold platen. The bottom sides of the two sliding feet have sliding tracks that slidably engage with the moving mold platen. The lateral guide components include a first guide plate, an eccentric pin, and a first fastening screw. The inner side of the first guide plate is used for sliding engagement with the outer side of the moving mold platen. Both ends of the first guide plate are provided with first guide grooves. The eccentric pin includes a first connecting column and a second connecting column connected in sequence. By setting up lateral guide components and slides, as well as eccentric pins in the lateral guide components, it is possible to eliminate the need for tie rod guidance to reduce costs. At the same time, the actual position of the moving template can be adjusted individually. However, during the production process, it may be necessary to remove the moving template from the frame for mold core replacement or maintenance and repair, and then reinstall it on the frame. During the removal and reinstallation process, the positional relationship between the moving template and the fixed template may be incorrect, requiring readjustment. Readjusting according to the above scheme requires a lot of time and effort. Therefore, a mold moving guide device that balances cost and moving template repositioning efficiency is needed. Summary of the Invention

[0004] To address the aforementioned problems in the existing technology, this invention provides a novel mold-moving guide device that balances cost and efficiency in repositioning the moving mold.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A novel mold-moving guide device includes a frame, two outer limiting mechanisms, two sliding feet, and a disassembly / assembly mechanism. The two sliding feet are slidably disposed on the top surface of the frame, and a movable template is provided on the two sliding feet. The two outer limiting mechanisms are disposed on the top surface of the frame, and their inner surfaces are slidably attached to the outer surfaces of the sliding feet. The disassembly / assembly mechanism is disposed on the frame and detachably connected to the movable template. The disassembly / assembly mechanism is connected to the frame via a lead screw, which is used to adjust the lateral position of the disassembly / assembly mechanism.

[0007] The outer limiting mechanism includes an outer limiting strip and a locking rod. The outer limiting strip is disposed on the top surface of the frame. Both the locking rod and the outer limiting strip have several screw holes. The screw holes of the locking rod correspond to and match the screw holes of the outer limiting strip. The locking rod and the outer limiting strip are detachably connected by bolts that mate with the screw holes. Each of the sliding feet of the locking rod is equipped with a locking mechanism.

[0008] By setting a detachable locking rod in the outer limiting mechanism, the functions of mechanical locking and mold moving guidance can be performed during the dry cycle, and it plays a role in rapid positioning during the disassembly and assembly of the moving template.

[0009] As a preferred embodiment of the present invention, any of the locking mechanisms includes a support rod and a locking head. One end of the support rod is fixedly connected to the outside of the sliding foot, and the other end is connected to the locking head through a drive module. The locking head engages or disengages with the locking head under the drive of the drive module. An electromagnet is provided in the locking head, and the electromagnet cooperates with the locking bar.

[0010] As a preferred embodiment of the present invention, the drive module is an electric cylinder structure.

[0011] As a preferred embodiment of the present invention, a wear-resistant block is provided between any of the sliding feet and the corresponding outer limiting mechanism.

[0012] As a preferred embodiment of the present invention, the wear-resistant block is made of wear-resistant copper alloy.

[0013] As a preferred embodiment of the present invention, an adjustment plug is detachably provided between any of the wear-resistant blocks and the corresponding sliding foot.

[0014] As a preferred embodiment of the present invention, the locking rod is made of high carbon steel.

[0015] As a preferred embodiment of the present invention, a loss detection module is embedded in any of the outer limiting strips. The loss detection module includes several pressure sensors, a control circuit and an alarm. The control circuit is electrically connected to several pressure sensors and the alarm respectively. The several pressure sensors are arranged at equal intervals along the sliding direction of the sliding foot.

[0016] As a preferred embodiment of the present invention, the loss detection module is electrically connected to the mold moving cylinder, and the mold moving cylinder changes its output power under the control of the loss detection module.

[0017] As a preferred embodiment of the present invention, it further includes two steel strips, which are respectively disposed between the frame and the two sliding feet.

[0018] The beneficial effects of this invention are as follows:

[0019] (1) By setting a detachable locking rod in the outer limiting mechanism, the mechanical locking and mold moving guide functions can be performed during the dry cycle, and the positioning function can be played in the process of disassembling and assembling the moving template.

[0020] (2) By setting up a pressure sensor array and electrically connecting the pressure sensor array to the oil pump of the mold moving cylinder, the cost increase caused by the frequent asynchrony of the mold moving cylinder is prevented and the adjustment efficiency is improved. Attached Figure Description

[0021] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0022] Figure 1 This is a side view of the structure of the present invention;

[0023] Figure 2 This is a front view of the structure of the present invention;

[0024] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 This is a schematic diagram of the frame portion of the present invention;

[0026] Figure 5 This is a partial structural schematic diagram of the locking rod of the present invention;

[0027] Figure 6 This is a schematic cross-sectional view of the locking mechanism of the present invention;

[0028] Figure 7 This is a schematic diagram of the loss detection module of the present invention.

[0029] Explanation of key component symbols:

[0030] In the diagram: 1. Frame; 11. Assembly / Disassembly mechanism; 12. Steel strip; 13. Slide rail; 2. Moving template; 21. Sliding foot; 22. Wear-resistant block; 23. Adjusting plug; 24. Support rod; 25. Locking head; 26. Drive module; 27. Electromagnet; 3. Mold moving cylinder; 4. Outer limit mechanism; 41. Outer limit strip; 42. Locking rod; 5. Control circuit; 51. Alarm; 52. Pressure sensor. Detailed Implementation

[0031] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0032] Please see Figure 1-7 A novel mold-moving guide device includes a frame 1 and two sliding feet 21. Each sliding foot 21 is slidably disposed on the top surface of the frame 1. The two sliding feet 21 are parallel to each other and form a support device for the moving template 2 at the two corners at the lower end of the square moving template 2. In actual use, when mold closing is required, the moving template 2 needs to be attached to the fixed template so that the mold core on the fixed template and the moving template 2 form a complete molding cavity. When mold opening is required after injection molding, the moving template 2 moves away from the fixed template under the drive of external force. This process is repeated continuously in the dry cycle of the two-platen injection molding machine. During this process, the sliding feet 21 carrying the moving template 2 slide on the frame 1 to help the moving template 2 complete mold closing or opening. In this embodiment, the overall shape of the two sliding feet 21 is a cuboid, and the direction of the cuboid is perpendicular to the contact surface between the moving template 2 and the fixed template.

[0033] Since the molding cavity of an injection mold needs to be composed of two mold cores respectively installed on the fixed mold platen and the moving mold platen 2, the moving mold platen 2 needs to maintain the accuracy of its movement direction as it moves closer and further away. When the sliding direction of the moving mold platen 2 is inconsistent with the set direction during the mold opening and closing process, the shape of the cavity formed by the two mold cores after they fit together will be misaligned, affecting the injection molded product. To address this, the present invention also includes two outer limiting mechanisms 4. The two outer limiting mechanisms 4 include two parallel outer limiting strips 41, which are disposed on the top surface of the frame 1. At the same time, the direction of the long side of the outer limiting strip 41 is consistent with the direction required for the two mold cavities to match after the fixed mold platen is closed, that is, perpendicular to the fixed mold platen. During use, the sliding foot 21 and the outer limiting strip 41 slide in contact with each other. When the fixed template slides, due to various factors, such as in this embodiment, the moving template 2 driven by two hydraulic cylinders has an inherent disadvantage of being difficult to control precisely, resulting in inconsistent movement of the two hydraulic cylinders. This causes the forces on both sides of the moving template 2 to be inconsistent, causing the movement direction of the moving template 2 to deviate from the vertical direction of the contact surface of the fixed template. This tendency will be transmitted to the two sliding feet 21. When the apex of the two sliding feet 21 has a tendency to deviate, it abuts against the inner surface of the outer limiting strip 41, preventing the deviation of the movement direction of the moving template 2. At the same time, the guide of the outer limiting block can effectively reduce the required tie rod length and reduce costs.

[0034] In actual use of injection molding machines, after a batch of products is completed, it is often necessary to replace the injection mold, or after long-term use, the moving platen 2 needs to be inspected and repaired. At this time, the moving platen 2 needs to be removed from the frame 1 for core replacement or maintenance, and then reinstalled. To facilitate the disassembly and assembly process of the moving platen 2, a disassembly and assembly mechanism 11 is provided on the edge of the frame 1 near the moving platen 2. The frame 1 is generally rectangular, and one end of the disassembly and assembly mechanism 11 is located on the side surface of the rectangular prism near the moving platen 2. The disassembly and assembly mechanism 11 can also be a robotic arm or a crane. In one embodiment, the disassembly and assembly mechanism 11 is an electric cylinder-driven robotic arm. At one end of its stroke, the head of the robotic arm can be connected to the bottom of the moving template 2. When the moving template 2 needs to be flipped up, the connection between the mold-moving cylinder 3 and the moving template 2 is first disconnected. Then, the robotic arm moves to the lower end of its stroke and connects to the moving template 2, and moves to the upper end of its stroke. At this time, the moving template 2, together with the sliding foot 21, is flipped into the air, which is convenient for operators to perform maintenance or mold replacement operations. When it needs to be installed back in its original position, the robotic arm moves to the lower end of its stroke and disconnects from the moving template 2.

[0035] During the process of disassembling and reassembling the moving template 2 by the disassembly and assembly mechanism 11, due to vibration or mechanical movement errors, there is a probability that the position of the moving template 2 in the direction perpendicular to the sliding direction will change relative to before disassembly after it is reassembled on the frame 1. This causes a decrease in the concentricity between the moving template 2 and the fixed template, resulting in errors that require realignment. Traditional alignment methods require first moving the moving template 2 to the mold closing position, then checking the concentricity of the mold cavity between the moving template 2 and the fixed template, and engaging the brake on the moving template 2 to check if it can engage with the tie rod. If not, the brake needs to be released, the position readjusted, and the concentricity and engagement checked again. These steps are then repeated until the concentricity and engagement of the moving template 2 and the fixed template meet the requirements. This process requires not only attention to and elimination of the influence of the mold-shifting device on the moving mold plate 2, but also, due to the high concentricity requirements of the injection molding machine and the generally large mass of the moving mold plate 2, traditional alignment methods require a lot of manpower and resources. To improve the repositioning efficiency of the moving mold plate 2, the outer limiting strip 41 includes a locking rod 42. The locking rod 42 is detachably mounted on the top surface of the outer limiting strip 41. In this embodiment, the locking rod 42 is generally elongated, with its bottom surface detachably connected to the outer limiting strip 41. A sawtooth groove is opened on the top surface. The locking rod 42 has several screw holes penetrating the upper and lower surfaces along the sliding direction of the moving mold plate 2. The outer limiting strip 41 also has screw holes that cooperate with the locking rod 42. The screw holes between the locking rod 42 and the outer limiting strip 41 are... For the corresponding settings, when fixing is required, first screw the screw into the screw hole between the locking rod 42 and the outer limit strip 41. When disassembly is required, remove the screw. Simultaneously, a locking mechanism is provided on the outer side of each sliding foot 21 below the moving template 2. The locking mechanism includes a support rod 24 and a locking head 25. One end of the support rod 24 is fixedly connected to the outer side of the corresponding sliding foot 21, and the other end is connected to the locking head 25 via a drive module 26. In this embodiment, the drive module 26 is an electric cylinder structure. The locking head 25 can move up and down under the drive of the electric cylinder. When the locking head 25 rotates to one end of its stroke, the lower surface of the locking head 25 connects with the locking rod 42. To perform the locking function, the lower surface of the locking head 25 connects with the locking rod 42. The upper surface of the locking rod 42 is parallel, and the lower surface has threads that mate with a sawtooth groove. Simultaneously, an electromagnet 27 is installed inside the lower surface of the locking head 25. In use, the moving template 2 moves to a position where it can connect with the disassembly / assembly mechanism 11 under the drive of the mold-moving cylinder 3. At this time, the locking head 25 moves downward under the drive of the electric cylinder until the lower surface of the locking head 25 contacts the locking rod 42 and engages with the sawtooth groove of the locking rod 42. This prevents relative movement between the moving template 2 and the sliding foot 21 relative to the locking rod 42 in the driving direction of the mold-moving cylinder 3. After contact and engagement, the electromagnet 27 in the locking head 25 is activated, further promoting a tight connection between the locking head 25 and the locking rod 42, preventing relative movement between the moving template 2 and the locking rod 42 in other directions.At this point, the relative positions of the moving template 2 and the two locking rods 42 are strictly fixed by the cooperation of the locking head 25, the electromagnet 27, and the locking rods 42. After the disassembly and assembly mechanism 11 reassembles the moving template 2 back into the frame 1, it is only necessary to adjust the position of the moving template 2 so that the screw holes of the two locking rods 42 correspond to the screw holes of the corresponding outer limit strips 41, and screw the screw holes through the two holes. This means that the position of the two locking rods 42 is now consistent with that before the passive template 2 was lifted. Since the position of the two locking rods 42 is consistent with that of the outer limit strips 41, and the relative position of the moving template 2 and the two locking rods 42 is consistent, after the locking rods 42 are installed, the position of the moving template 2 and the two outer limit strips 41 is consistent before and after lifting, thus completing the repositioning of the moving template 2 by the guide device.

[0036] Meanwhile, during normal production cycles, operators sometimes need to reach into the mold cavity area to perform operations such as product removal, mold inspection, and disassembly / reassembly. In this process, if the relatively heavy moving template 2 moves, there is a high probability of causing injury to the operator. At this time, it is necessary for the moving template 2 to remain stationary after the mold is opened. The locking rod 42 is designed so that when the moving template 2 has a tendency to slide after the locking head 25 engages with the locking rod 42, it is locked by the interlocking locking device and the locking rod 42. This not only assists in the repositioning of the moving template 2 after disassembly / reassembly but also plays a safety auxiliary role in the production process.

[0037] During the locking process of the moving template 2 after the mold opening, the locking rod 42 locks the moving template 2. Due to the large mass of the moving template 2, each time the movement of the moving template 2 is hindered by the meshing, there is a probability that the relatively precise sawtooth groove will deform, resulting in a reduction in the locking effect and the need for replacement. Therefore, the locking rod 42 needs to have high hardness. At the same time, the electromagnet 27 in the locking head 25 attracts the locking rod 42 before the moving template 2 is lifted. The locking rod 42 itself needs to have sufficient magnetism to prevent displacement caused by poor attraction, which would affect the accuracy of subsequent repositioning of the moving template 2. In order to balance the strength and magnetic requirements, the locking rod 42 is made of high carbon steel. In this embodiment, the locking rod 42 is made of T7 steel. The main mechanical properties of T7 steel are: yield strength of 841MPa and tensile strength of 962MPa. Compared with ordinary steel, T7 high carbon steel with greater tensile strength and yield strength can better prevent deformation during the locking process. At the same time, high carbon steel itself has strong magnetism, which improves the locking effect and further reduces the replacement frequency, saving costs.

[0038] During the locking process, if only one locking mechanism and locking rod 42 are engaged, there is a probability that the locking will not be tight enough due to factors such as machining errors and vibration, resulting in relative sliding and affecting the subsequent repositioning of the moving template 2. Adding an additional locking mechanism can prevent relative sliding from occurring at one of the locking points, as the locking head 25 of the other locking mechanism can play a locking role. Therefore, each of the sliding feet 21 and locking rod 42 is equipped with two locking mechanisms to avoid the situation of loose locking.

[0039] After maintenance, when reinstalling the moving template 2 back onto the frame 1 and adjusting it perpendicular to the sliding direction, manual adjustment is inefficient, and additional mechanical adjustment leads to insufficient precision and further structural complexity. Therefore, the frame 1, equipped with the disassembly / assembly mechanism 11, has a transversely arranged slide rail 13 on one side. Specifically, transverse arrangement means that the slide rail 13 is positioned perpendicular to the sliding direction of both sliding feet 21. In this case, the slide rail 13 is perpendicular to the sliding direction of the moving template 2 and parallel to the upper surface of the frame 1. The contact surface between the 11 and the frame 1 is provided with an insert that mates with the slide rail 13. At the same time, a lead screw assembly passes horizontally through the base of the disassembly and assembly mechanism 11. The base of the disassembly and assembly mechanism 11 is threaded with the lead screw. During the process of adjusting the position of the moving template 2 so that the screw holes of the two locking rods 42 correspond to the screw holes of the corresponding outer limit strips 41, the operator controls the disassembly and assembly mechanism 11 to slide along the slide rail 13 under the drive of the lead screw until the screw holes of the two locking rods 42 are aligned with the screw holes of the corresponding outer limit strips 41, thereby improving the repositioning efficiency of the moving template 2.

[0040] In addition to supporting the moving template 2 and assisting it in sliding on the frame 1, the sliding foot 21 also adjusts the height of the moving template 2, playing a crucial role. However, during continuous dry cycles, the sliding foot 21 inevitably rubs against the outer limiting strip 41. After long-term use, the structure is inevitably affected by friction or installation, which wears down the lifespan and affects the normal function of the sliding foot 21. Moreover, once wear occurs, the importance of the sliding foot 21 makes replacement quite troublesome. Therefore, a wear-resistant block 22 is provided between the outer limiting mechanisms 4 corresponding to any of the sliding feet 21. By setting the wear-resistant block 22, it bears the impact and friction during continuous collisions, preventing damage to the sliding foot 21. At the same time, when the wear-resistant block 22 reaches the end of its lifespan, replacing the wear-resistant block 22 is more convenient and faster than repairing or replacing the sliding foot 21.

[0041] To further improve the durability of the wear-resistant block 22 and reduce the replacement frequency to lower costs, it is made of a wear-resistant copper alloy. In this embodiment, the wear-resistant copper alloy is selected from bronze containing 2% beryllium.

[0042] In actual production, it may be necessary to replace the entire moving mold plate 2. However, the placement of the mold core and the position of the tie rod hole differ between different moving mold plates 2. The former leads to a decrease in the concentricity between the moving mold plate 2 and the fixed mold plate, causing the mold cavities of the moving mold plate 2 and the fixed mold plate to mismatch during mold closing. The latter problem is that during the injection molding process where the moving mold plate 2 and the fixed mold plate are fitted together, the brake on the moving mold plate 2 still needs to hold it tightly. Since this invention does not cooperate with the tie rod through the tie rod hole, and the position of the brake depends on the position of the tie rod hole, there is still a possibility that the brake may not fully cooperate with the tie rod due to mechanical errors or vibrations caused by the aforementioned hydraulic cylinder. This could result in the two mold cavities not fully matching when the brake is closed. The inability of the brake block to simultaneously engage with the pull rod may cause the pull rod to bend or vibrate, resulting in a loud noise. Over time, this could damage the pull rod, both of which would reduce the guiding effect of the mold movement and increase costs. To avoid this, the position of the moving template 2 needs to be adjusted. For this purpose, the present invention also includes a set of adjusting plugs 23. In actual production, the vertical position can be adjusted by the sliding foot 21. By inserting adjusting plugs 23 of different thicknesses between the wear-resistant block 22 and the sliding foot 21, the distance between the outer surface of the sliding foot 21 and the outer limiting strip 41 can be adjusted, thereby adjusting the concentricity in the sliding direction perpendicular to the moving template 2 and avoiding the cost increase caused by the decrease in concentricity after replacing the moving template 2.

[0043] In order to ensure that the engagement between the locking rod 42 and the locking head 25 does not interfere with the adjustment of the concentricity of the moving template 2 by the adjusting plug 23 in a direction perpendicular to the sliding direction, the direction of each groove of the sawtooth groove of the locking rod 42 is perpendicular to the sliding direction of the moving template 2. This ensures that during the adjustment of the moving template 2 in a direction perpendicular to the sliding direction, no matter how the moving template 2 moves the two locking mechanisms left and right, the locking head 25 can always engage with the locking rod 42.

[0044] Using two hydraulic cylinders to drive the moving platen 2 can lead to a tendency for its movement direction to deviate from the perpendicular direction of the contact surface of the fixed platen due to the difficulty in precisely controlling the hydraulic pressure. Although this tendency is limited by the outer limiting strip 41, the limitation itself relies on the outer limiting strip 41 continuously squeezing the sliding foot 21. During this process, both the sliding foot 21 and the outer limiting strip 41 will be under continuous force. At the same time, the moving platen 2 of large injection molding machines is generally heavy, and the sliding foot 21 and the outer limiting strip 41 are also under great force. Over time, the outer limiting block, the sliding foot 21, as well as the wear-resistant block 22 and the adjusting plug 23 sandwiched in the middle, may deform due to the force. Deformation necessitates the replacement of parts, increasing operating costs. Furthermore, conventional observation methods often struggle to detect such problems early on. By the time they are detected, components like the outer limit strip 41 are already deformed and worn, potentially causing production accidents and further increasing costs. To facilitate timely detection in such situations, each of the outer limit strips 41 is equipped with a wear detection module. This module includes several pressure sensors 52 embedded within the outer limit strip 41, all electrically connected to a control circuit 5. The pressure sensors 52 are evenly spaced along the sliding direction of the sliding foot 21. To enhance sensor sensitivity... In this embodiment, several sensors are uniformly embedded within the outer limiting strip 41, within 5mm of the surface near the sliding foot 21. During use, as the sliding foot 21 moves continuously, the sensors continuously read the pressure exerted by the sliding foot 21 on the sensor and upload the pressure data to the control circuit 5. The control circuit 5 continuously compares the pressure value uploaded by the pressure sensor 52 currently under pressure with the pressure value uploaded by the pressure sensor 52 previously under pressure. When the comparison result shows that the two pressure values ​​differ too much, it indicates that the pressure at the corresponding positions of the two adjacent sensors differs too much, and the uneven action of the two cylinders causes the moving mold to... Plate 2 tends to deviate from the direction of movement defined by the outer limit bar 41 and squeeze the aforementioned parts. When this situation occurs more than five times within ten dry cycles, it indicates that the asynchronous movement of the mold moving cylinder 3 is not caused by random error, but by a fault that needs to be eliminated. At this time, the control circuit 5 transmits the start signal to an alarm 51 connected to the control circuit 5. In this embodiment, the alarm 51 is an audible and visual alarm 51. When the alarm 51 is activated, it emits an audible and visual signal to prompt the operator to troubleshoot the fault. By setting several pressure sensors 52 along the outer limit bar 41, the increased cost caused by the frequent asynchrony of the mold moving cylinder 3 is prevented.

[0045] When alarm 51 emits an audible and visual signal, the operator only learns that the asynchronous hydraulic pressure output of the two mold-moving cylinders 3 causes the moving platen 2 to tend to deviate from the preset direction. However, it is impossible to determine which specific mold-moving cylinder 3 has an unstable hydraulic pressure output causing the asynchrony, resulting in a long troubleshooting time. To enable the entire injection molding machine system to automatically use the detection results for adjustment, the control circuit 5 of the wear detection module is electrically connected to the mold-moving cylinder 3. Specifically, it is electrically connected to the oil pump of the mold-moving cylinder 3 and forms part of the oil pump control circuit 5. Before use, the operator measures the adjacent pressures through testing. Different deviations in the pressure values ​​of sensor 52 correspond to different oil pressure differences between the two mold-moving cylinders 3, and are input to the control circuit 5. When the control circuit 5 detects excessive deviations in the values ​​of adjacent pressure sensors 52 more than five times within ten dry cycles, the control circuit 5 adjusts the output power of the oil pump according to the pre-input data. If a deviation is still detected within ten dry cycles after adjusting the output power of the oil pump once, it means that the problem cannot be solved after automatic adjustment. The control circuit 5 then transmits the signal to the audible and visual alarm 51 to notify the operator to further troubleshoot the fault and improve the adjustment efficiency.

[0046] To facilitate the movement of the sliding foot 21 on the frame 1, two steel strips 12 are provided on the frame 1 corresponding to the sliding foot 21. In this embodiment, the steel strips 12 are detachably arranged on the frame 1. During use, the sliding foot 21 slides on the steel strips 12. The arrangement of the steel strips 12 can evenly distribute the pressure of the sliding foot 21 on the frame 1 to the steel strips 12, reducing damage to the frame 1. At the same time, the detachability of the steel strips 12 allows the slide rail 13 to be directly replaced when wear occurs after long-term use. In addition, the invention is limited by the outer limiting strip 41.

[0047] Working principle and usage process of this invention:

[0048] During normal production cycle, the sliding foot 21 slides on the steel strip 12 and slides in contact with the outer limiting strip 41. When the fixed template tends to deviate from the movement during sliding, this tendency will be transmitted to the two sliding feet 21. When the apex of the two sliding feet 21 tends to deviate, it will abut against the inner surface of the outer limiting strip 41, thus hindering the deviation of the moving template 2 in the direction of movement.

[0049] During this process, several sensors continuously read the pressure of the sliding foot 21 on the sensor and upload the pressure data to the control circuit 5. The control circuit 5 continuously compares the pressure value uploaded by the pressure sensor 52 that is currently under pressure with the pressure value uploaded by the pressure sensor 52 that was under pressure last time. When the comparison result shows that the two pressure values ​​differ too much more than five times within ten dry cycles, the control circuit 5 adjusts the output power of the oil pump according to the pre-input data. After adjusting the output power of the oil pump once, if the two pressure values ​​still differ too much more than five times within ten dry cycles, the control circuit 5 transmits the signal to the audible and visual alarm 51.

[0050] When the operator needs to reach into the mold cavity area, the locking head 25 should be lowered to engage with the locking lever 42.

[0051] When the moving template 2 needs to be inspected, first lower the locking heads 25 of the four locking devices on the two sliding feet 21 to engage with the locking heads 25. Then, the electromagnets 27 in the locking heads 25 are energized to further lock. The disassembly and assembly mechanism 11 lifts the moving template 2. After the inspection is completed, the disassembly and assembly mechanism 11 places the moving template 2 on the frame 1. Driven by the lead screw, the disassembly and assembly mechanism 11 slides along the slide rail 13 until the screw holes of the two locking rods 42 are aligned with the screw holes of the corresponding outer limit strips 41.

[0052] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A novel mold-shifting guide device, characterized in that: The device includes a frame, two outer limiting mechanisms, two sliding feet, and a disassembly / assembly mechanism. The two sliding feet are slidably mounted on the top surface of the frame, and a movable template is provided on the two sliding feet. The two outer limiting mechanisms are mounted on the top surface of the frame, and their inner surfaces are slidably attached to the outer surfaces of the sliding feet. The disassembly / assembly mechanism is mounted on the frame and detachably connected to the movable template. The disassembly / assembly mechanism is connected to the frame via a lead screw, which is used to adjust the lateral position of the disassembly / assembly mechanism. The outer limiting mechanism includes an outer limiting strip and a locking rod. The outer limiting strip is disposed on the top surface of the frame. Both the locking rod and the outer limiting strip are provided with a plurality of screw holes. The screw holes of the locking rod correspond to and match the screw holes of the outer limiting strip. The locking rod and the outer limiting strip are detachably connected by bolts that mate with the screw holes. Each of the sliding feet cooperating with the locking rod is provided with a locking mechanism. Each of the aforementioned locking mechanisms includes a support rod and a locking head. One end of the support rod is fixedly connected to the outside of the sliding foot, and the other end is connected to the locking head through a drive module. The locking head engages or disengages with the locking head under the drive of the drive module. An electromagnet is provided in the locking head, and the electromagnet cooperates with the locking bar. A loss detection module is embedded in any of the outer limiting strips. The loss detection module includes several pressure sensors, a control circuit, and an alarm. The control circuit is electrically connected to several pressure sensors and an alarm. The pressure sensors are arranged at equal intervals along the sliding direction of the sliding foot.

2. The novel mold-shifting guide device according to claim 1, characterized in that: The drive module is an electric cylinder structure.

3. The novel mold-shifting guide device according to claim 1, characterized in that: A wear-resistant block is provided between any of the sliding feet and the corresponding outer limiting mechanism.

4. A novel mold-shifting guide device according to claim 3, characterized in that: The wear-resistant block is made of wear-resistant copper alloy.

5. A novel mold-shifting guide device according to claim 4, characterized in that: An adjustment plug is detachably provided between any of the wear-resistant blocks and the corresponding sliding foot.

6. A novel mold-shifting guide device according to claim 1, characterized in that: The locking lever is made of high-carbon steel.

7. A novel mold-shifting guide device according to claim 1, characterized in that: The loss detection module is electrically connected to the mold moving cylinder, and the mold moving cylinder changes its output power under the control of the loss detection module.

8. A novel mold-shifting guide device according to claim 1, characterized in that: It also includes two steel strips, which are respectively disposed between the frame and the two sliding feet.

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