Height-adjustable mold base pressing mechanism

Abstract

The height-adjustable mold base pressing mechanism comprises a supporting table, a moving groove is formed in the upper end of the supporting table, two moving blocks are movably connected into the moving groove, and a driving mechanism for driving the two moving blocks to move synchronously is installed on the supporting table. According to the adjustable mold base pressing mechanism, through a series of designs such as height self-adaptive adjustment, pressure constant control and heat exchange oil circulation heat dissipation, the problem that pressing force is not matched due to mold base height difference and machining errors in actual production is effectively solved; the pressing position and the pressing force can be accurately adjusted according to the height and pressure requirements of different mold bases, and the stability and the precision of the mold bases in the machining process are ensured; and meanwhile, through pressure control and heat dissipation design, the mold base and the pressing mechanism are protected, the production cost is reduced, the production period is shortened, the production efficiency and the product quality are improved, and the adaptability and reliability of equipment in a complex production environment are enhanced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of molds, in particular to a height-adjustable mold base pressing mechanism. BACKGROUND

[0002] The mold base is also called a mold frame, which is a support for the mold, such as a die-casting machine that combines and fixes the parts of the mold in a certain pattern and position, and enables the mold to be installed on the die-casting machine for work. The mold frame is composed of a push-out mechanism, a guide mechanism, a pre-reset mechanism, a mold foot pad, and a seat plate. Currently, when the mold base is being processed, a pressing device is needed to fix the mold base to ensure its stability.

[0003] However, in actual production, the heights of mold bases of different types and specifications differ, and even the heights of mold bases of the same type may differ due to processing errors and other factors. When using a pressing mechanism with a fixed height, if the height of the mold base does not match the preset height of the pressing mechanism, insufficient or excessive pressing force may occur. Insufficient pressing force may cause the mold base to move during processing, affecting the forming precision of the mold; excessive pressing force may damage the mold base or the pressing mechanism itself, increasing production costs and production cycles; for example, the height-adjustable mold base pressing mechanism disclosed in CN217727093U has the above-mentioned problems; for example, when processing the middle part, the side pressing of the pressing plate may cause ineffective pressing; secondly, the pressing force cannot be adjusted according to the adaptability of the mold base.

[0004] Therefore, the present application provides a height-adjustable mold base pressing mechanism. SUMMARY

[0005] The purpose of the present application is to solve the above-mentioned technical problems and provide a height-adjustable mold base pressing mechanism.

[0006] To achieve the above-mentioned purpose, the present application adopts the following technical solutions: A height-adjustable mold base pressing mechanism, comprising a support table, a moving groove is provided at the upper end of the support table, two moving blocks are movably connected in the moving groove, a driving mechanism is installed on the support table to drive the two moving blocks to move synchronously, an installation plate is fixed on the moving block, a side pressing plate that can move is installed on the installation plate, a moving frame is fixed on the side pressing plate, an upper pressing plate that cooperates with the side pressing plate is installed on the moving frame, when the side pressing plate is in contact with the mold base, the upper pressing plate can be driven to move downward and come into contact with the mold base, a heat exchange channel that flows with heat exchange oil is provided in the support table, a pumping mechanism connected with the driving mechanism is installed on the support table, when the side pressing plate and the upper pressing plate exert a set pressure on the mold base, the driving mechanism only drives the pumping mechanism to work and delivers heat exchange oil into the heat exchange channel.

[0007] Preferably, two guide rails are arranged in the moving groove, the moving block is slidably connected to the guide rails, a first screw rod and a second screw rod are rotatably connected in the moving groove, the first screw rod is fixedly connected to the second screw rod, the screw threads of the first screw rod and the second screw rod are opposite, and the first screw rod and the second screw rod respectively penetrate the moving blocks on the same side and are threadedly connected thereto.

[0008] Preferably, the driving mechanism comprises a driving box mounted on the support table, a worm and a worm wheel are arranged in the driving box and are engaged, a short shaft is fixedly connected to the worm wheel, the short shaft is fixedly connected to the second screw rod, a driving member is mounted on the driving box, a driving shaft is fixed to the shaft end of the driving member, a sleeve is fixed to the worm, the sleeve is rotatably connected in the driving box, the driving shaft penetrates the sleeve and is rotatably connected thereto, and the driving shaft and the sleeve can synchronously rotate or relatively rotate.

[0009] Preferably, an installation groove is arranged on the driving shaft, an electromagnet is fixed in the installation groove, a magnetic block is slidably connected in the installation groove, the opposite side of the magnetic block and the electromagnet has the same magnetic pole, a return spring is fixed to the electromagnet and the magnetic block, the inner wall of the sleeve is provided with a plurality of lock grooves matched with the magnetic block, and the plurality of lock grooves are arranged in an annular array in the sleeve.

[0010] Preferably, a first piston cylinder is mounted on the mounting plate, a first moving piston is slidably connected in the first piston cylinder, a first return spring is fixed to the first moving piston and the first piston cylinder, a rectangular rod is fixed to the first piston cylinder, a guide ring is fixed in the first piston cylinder, the rectangular rod penetrates the guide ring and is slidably connected thereto, and the side pressing plate is fixed to the rectangular rod.

[0011] Preferably, a second piston cylinder is mounted on the moving frame, a second moving piston is mounted on the second piston cylinder, a second return spring is fixed to the second moving piston and the second piston cylinder, a driving rod is fixed to the bottom of the second moving piston, the upper pressing plate is fixed to the bottom of the driving rod, and the first piston cylinder and the second piston cylinder are connected through a conveying pipe.

[0012] Preferably, an oil storage tank is fixed to the support table, a Y-shaped pipe is mounted on the oil storage tank, the Y-shaped pipe is connected to the two first piston cylinders, and two pressure electromagnetic valves are mounted on the Y-shaped pipe.

[0013] Preferably, a circular plate is fixed on the driving shaft, a third piston cylinder is installed on the support table, a third movable piston is slidably connected in the third piston cylinder, a connecting rod is hingedly connected to the third movable piston, the connecting rod is hingedly connected to the circular plate, and the connecting rod is eccentrically arranged on the circular plate, the third piston cylinder is connected with the oil storage tank through an inlet pipe, the third piston cylinder is connected with the heat exchange flow channel through an outlet pipe, and the other end of the heat exchange flow channel is connected with the oil storage tank through a return pipe.

[0014] Preferably, an inlet one-way valve is installed on the inlet pipe, and the inlet one-way valve only allows the heat exchange oil to enter the third piston cylinder through the inlet pipe.

[0015] Preferably, an outlet one-way valve is installed on the outlet pipe, and the outlet one-way valve only allows the heat exchange oil to flow to the outlet pipe through the third piston cylinder.

[0016] Compared with the prior art, the present application has the following advantages: 1. Adapt to different height of the mold core: Because the upper pressing plate can move up and down, the mechanism can adaptively adjust the pressing position according to the height difference of different types and specifications of mold cores, and the height inconsistency of the same type of mold core due to processing errors. Whether the mold core is low or high, effective pressing can be achieved, avoiding the problem of insufficient or excessive pressing force when using a fixed height pressing mechanism.

[0017] 2. Ensure the molding precision of the mold: Through accurate pressing adjustment, it is ensured that the mold core will not move due to insufficient pressing force during processing, thereby ensuring the molding precision of the mold, improving the quality stability of the product, and reducing the product scrap rate caused by the molding problem of the mold.

[0018] 3. Real-time pressure monitoring and adjustment: The pressure sensor in the pressure electromagnetic valve installed on the Y-shaped pipe can detect the pressure value applied to the mold core by the side pressing plate and the upper pressing plate in real time, and transmit the signal to the controller. When the pressure value is greater than the set threshold, the controller controls the electromagnetic valve to open, so that the heat exchange oil in the first piston cylinder flows back to the oil storage tank to reduce the pressure; when the pressure is less than the set threshold, the controller controls the electromagnetic valve to close, maintaining the pressure stable. This accurate pressure control method ensures stable clamping of the mold core and constant pressure value.

[0019] 4. Protect the mold core and the pressing mechanism: Avoid the situation that the mold core or the pressing mechanism itself is damaged due to excessive pressing force, prolong the service life of the mold core and the pressing mechanism, and reduce the production cost. At the same time, it also reduces the production interruption caused by equipment damage and shortens the production cycle.

[0020] 5. Driving and synchronous rotation design: the motor power is transmitted to the driving shaft through the reduction box, the electromagnetic iron is powered to drive the magnetic block to be clamped into the lock groove, the driving shaft and the sleeve are synchronously rotated, and then the moving block is driven to move through the transmission components such as the worm, the worm gear and the screw, so that the side pressing plate approaches the mold blank. This design ensures the stability and reliability of power transmission, and can accurately convert the rotary motion of the motor into the linear motion of the side pressing plate.

[0021] 6. Safety locking function: when the pressure sensor detects abnormal pressure, the controller controls the electromagnetic iron to be powered off, the magnetic block is reset under the action of the return spring, the driving shaft and the sleeve can rotate relative to each other, and the driving mechanism stops driving the moving block to continue moving. This safety locking function prevents the pressure from further increasing, avoids more serious damage to the mold blank and the mechanism due to out-of-control pressure, and ensures the safety of production operation.

[0022] 7. Heat dissipation: the driving shaft drives the circular plate to rotate, the third moving piston is driven to reciprocate in the third piston cylinder through the connecting rod, and the heat exchange oil is pumped in and out. The heat exchange oil flows in the heat exchange flow channel, dissipates heat to the support table and the processed mold blank, and then flows back to the oil tank through the return pipe to form a circulating use. This heat dissipation method can timely take away the heat generated during processing, prevent the mold blank from deforming or the pressing mechanism from performance degradation due to high temperature, and ensure that the pressing mechanism works stably at appropriate temperature.

[0023] 8. Energy saving and high efficiency: when the side pressing plate and the upper pressing plate exert the set pressure on the mold blank, the driving mechanism only drives the pumping mechanism to work and delivers the heat exchange oil to the heat exchange flow channel, avoiding unnecessary energy consumption, improving energy utilization efficiency, and reducing production cost.

[0024] 9. Easy to take and place the mold blank: after processing is completed, the control electromagnetic valve is opened, the electromagnetic iron is powered on, and the motor is reversed; under the action of the first return spring and the second return spring, the side pressing plate and the upper pressing plate are reset and moved to both sides and the upper side, so that the mold blank can be taken and placed without affecting the mold blank, avoiding the drawbacks of the prior art using rotating mode for easy material taking.

[0025] 10. Only the threshold value of the pressure sensor needs to be set to change the strength of pressing the mold blank, and the adjustment is simple and convenient.

[0026] In summary, the adjustable die blank pressing mechanism of the present application effectively solves the problem of mismatching of pressing force caused by height difference and processing error of die blank in actual production through a series of designs such as height self-adaptive adjustment, constant pressure control and heat exchange oil circulation heat dissipation; the pressing position and pressing force can be accurately adjusted according to the height and pressure requirement of different die blanks, so as to ensure the stability and precision of die blank in the processing process; at the same time, through the pressure control and heat dissipation design, the die blank and the pressing mechanism are protected, the production cost and production cycle are reduced, the production efficiency and product quality are improved, and the adaptability and reliability of the equipment in complex production environment are enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 A structure schematic view of a height-adjustable die blank pressing mechanism is provided for the present application; Figure 2 A side view of a height-adjustable die blank pressing mechanism is provided for the present application; Figure 3 A rear view of a height-adjustable die blank pressing mechanism is provided for the present application; Figure 4 A sectional view of a height-adjustable die blank pressing mechanism is provided for the present application; Figure 5 A structure schematic view of the first screw rod and the second screw rod in a height-adjustable die blank pressing mechanism is provided for the present application; Figure 6 A structure schematic view of a heat exchange runner in a height-adjustable die blank pressing mechanism is provided for the present application; Figure 7 A structure schematic view of a worm and gear in a height-adjustable die blank pressing mechanism is provided for the present application; Figure 8 A side view of a worm and gear in a height-adjustable die blank pressing mechanism is provided for the present application; Figure 9 A structure schematic view of an electromagnet in a height-adjustable die blank pressing mechanism is provided for the present application.

[0028] In the figure: 1 support table, 2 mounting plate, 3 first piston cylinder, 4 moving frame, 5 second piston cylinder, 6 upper pressing plate, 7 conveying pipe, 8 guide ring, 9 driving rod, 10 rectangular rod, 11 side pressing plate, 12 oil storage tank, 13 driving part, 14 driving box, 15 Y-shaped pipe, 16 pressure electromagnetic valve, 17 third piston cylinder, 18 liquid inlet pipe, 19 liquid outlet pipe, 20 driving shaft, 21 round plate, 22 third moving piston, 23 connecting rod, 24 return pipe, 25 liquid inlet check valve, 26 liquid outlet check valve, 27 moving groove, 28 moving block, 29 guide rail, 30 first screw rod, 31 second screw rod, 32 first moving piston, 33 first return spring, 34 second return spring, 35 second moving piston, 36 worm gear, 37 short shaft, 38 worm, 39 sleeve, 40 locking groove, 41 mounting groove, 42 electromagnet, 43 magnetic block, 44 return spring, 45 heat exchange runner. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0030] Reference Figures 1-9 A highly adjustable blank pressing mechanism, comprising a support table 1, the upper end of the support table 1 is provided with a moving groove 27, two moving blocks 28 are movably connected in the moving groove 27, two guide rails 29 are arranged in the moving groove 27, the moving blocks 28 are slidably connected to the guide rails 29, so that the stable sliding of the moving blocks 28 can be ensured.

[0031] The first screw rod 30 and the second screw rod 31 are rotatably connected in the moving groove 27, the first screw rod 30 is fixedly connected with the second screw rod 31, the screw directions of the first screw rod 30 and the second screw rod 31 are opposite, the first screw rod 30 and the second screw rod 31 respectively penetrate the moving blocks 28 on the same side and are threadedly connected therewith, and when the first screw rod 30 and the second screw rod 31 rotate, the two moving blocks 28 can move towards or away from each other.

[0032] The support table 1 is provided with a driving mechanism for driving the two moving blocks 28 to move synchronously, the driving mechanism comprises a driving box 14 mounted on the support table 1, a worm 38 and a worm gear 36 are arranged in the driving box 14 and are engaged, a short shaft 37 is fixedly connected to the worm gear 36, a driving part 13 is mounted on the driving box 14, the driving part 13 is a speed reducer mounted on the driving box 14, the shaft end of the speed reducer is fixedly connected with a driving shaft 20, and a motor is mounted on the speed reducer; the shaft end of the driving part 13 is fixedly connected with the driving shaft 20, a sleeve 39 is fixedly connected to the worm 38, the sleeve 39 is rotatably connected in the driving box 14, and the driving shaft 20 penetrates the sleeve 39 and is rotatably connected therewith.

[0033] The driving shaft 20 and the sleeve 39 can synchronously rotate or relatively rotate, which will be further explained: the driving shaft 20 is provided with a mounting groove 41, the mounting groove 41 is fixed with an electromagnet 42, the mounting groove 41 is slidably connected with a magnetic block 43, the opposite side of the magnetic block 43 and the electromagnet 42 has the same magnetic pole, the electromagnet 42 and the magnetic block 43 are fixed with a return spring 44, the inner wall of the sleeve 39 is provided with a plurality of locking grooves 40 matched with the magnetic block 43, and the plurality of locking grooves 40 are arranged in an annular array in the sleeve 39; when the magnetic block 43 is located in the locking groove 40, the driving shaft 20 can drive the sleeve 39 to synchronously rotate, and when the magnetic block 43 is located in the mounting groove 41, the driving shaft 20 and the sleeve 39 relatively rotate.

[0034] The moving block 28 is fixed with a mounting plate 2, the mounting plate 2 is mounted with a movable side pressing plate 11, the mounting plate 2 is mounted with a first piston cylinder 3, the first piston cylinder 3 is slidably connected with a first moving piston 32, the first moving piston 32 and the first piston cylinder 3 are fixed with a first return spring 33, the first piston cylinder 3 is fixed with a rectangular rod 10, the first piston cylinder 3 is fixed with a guide ring 8, the rectangular rod 10 penetrates through the guide ring 8 and is slidably connected with the guide ring 8, and the side pressing plate 11 is fixed on the rectangular rod 10.

[0035] The side pressing plate 11 is fixed with a moving frame 4, the moving frame 4 is mounted with an upper pressing plate 6 matched with the side pressing plate 11, the moving frame 4 is mounted with a second piston cylinder 5, the second piston cylinder 5 is mounted with a second moving piston 35, the second moving piston 35 and the second piston cylinder 5 are fixed with a second return spring 34, the bottom of the second moving piston 35 is fixed with a driving rod 9, the upper pressing plate 6 is fixed at the bottom of the driving rod 9, and the first piston cylinder 3 and the second piston cylinder 5 are connected through a conveying pipe 7; the first piston cylinder 3 and the second piston cylinder 5 both contain heat exchange oil.

[0036] The driving mechanism can make the side pressing plate 11 abut against the mold blank, and when the side pressing plate 11 abuts against the mold blank, the upper pressing plate 6 can be driven to move downward and abut against the mold blank, the supporting table 1 is fixed with an oil storage tank 12, the oil storage tank 12 is mounted with a Y-shaped pipe 15, the Y-shaped pipe 15 is connected with two first piston cylinders 3, and the Y-shaped pipe 15 is mounted with two pressure electromagnetic valves 16; the pressure electromagnetic valve 16 comprises an electromagnetic valve and a pressure sensor, the pressure sensor controls the working of the electromagnetic valve and the electromagnet 42 through a controller; when the pressure sensor detects that the pressure value is greater than the set threshold value, the controller controls the electromagnetic valve to open, the electromagnet 42 is powered off, and the magnetic block 43 is reset under the action of the return spring 44.

[0037] The supporting table 1 is provided with a heat exchange flow channel 45 in which heat exchange oil flows, and the supporting table 1 is mounted with a pumping mechanism connected with the driving mechanism; when the side pressing plate 11 and the upper pressing plate 6 exert a set pressure on the mold blank, the driving mechanism only drives the pumping mechanism to work and convey heat exchange oil into the heat exchange flow channel 45.

[0038] The pumping mechanism is explained: the driving shaft 20 is fixed with a round plate 21, the support table 1 is installed with a third piston cylinder 17, the third piston cylinder 17 is slidably connected with a third moving piston 22, the third moving piston 22 is hingedly connected with a connecting rod 23, the connecting rod 23 is hingedly connected on the round plate 21, and the connecting rod 23 is eccentrically arranged on the round plate 21, the third piston cylinder 17 is connected with the oil tank 12 through the liquid inlet pipe 18, and the liquid inlet pipe 18 is installed with a liquid inlet check valve 25, which only allows the heat exchange oil to pass through the liquid inlet pipe 18 into the third piston cylinder 17.

[0039] The third piston cylinder 17 is connected with the heat exchange flow channel 45 through the liquid outlet pipe 19, and the other end of the heat exchange flow channel 45 is connected with the oil tank 12 through the backflow pipe 24, and the liquid outlet pipe 19 is installed with a liquid outlet check valve 26, which only allows the heat exchange oil to flow through the third piston cylinder 17 into the liquid outlet pipe 19.

[0040] In actual production, the heights of different types and specifications of the mold base are different, and even the same type of mold base will also cause inconsistent height due to processing errors and other factors. When using a fixed height pressing mechanism, the height of the mold base does not match the preset height of the pressing mechanism, which may cause insufficient or excessive pressing force. Insufficient pressing force will cause the mold base to move during processing, affecting the mold forming precision; excessive pressing force may damage the mold base or the pressing mechanism, increasing production cost and production cycle. The height-adjustable mold base pressing mechanism can effectively solve these problems, and its pressing working process is as follows: The motor starts to operate, and its power is transmitted to the driving shaft 20 through the reduction box, and the driving shaft 20 starts to rotate. At this time, the electromagnet 42 is electrified to generate a magnetic force. Since the opposite side of the magnetic block 43 and the electromagnet 42 has the same magnetic pole, and the repulsive force is greater than the elastic force of the return spring 44, the electromagnet 42 drives the magnetic block 43 to move and clamps into the locking groove 40 on the inner wall of the sleeve 39, so that the driving shaft 20 and the sleeve 39 rotate synchronously.

[0041] The rotation of the sleeve 39 drives the worm 38 fixed thereon to rotate, and the worm 38 meshes with the worm wheel 36, thereby driving the worm wheel 36 to rotate. The worm wheel 36 is fixed with a short shaft 37, and the short shaft 37 is fixedly connected with the second screw 31, so that the rotation of the worm wheel 36 drives the second screw 31 to rotate. The first screw 30 is fixedly connected with the second screw 31, and the screw threads of the two are opposite, and they respectively penetrate the moving block 28 and are threadedly connected therewith. When the first screw 30 and the second screw 31 rotate, the two moving blocks 28 will move towards or away from each other. The moving block 28 slides on the guide rail 29 in the moving slot 27 to ensure stable movement. With the movement of the moving block 28, the mounting plate 2 fixed on the moving block 28 also moves, thereby driving the side pressing plate 11 to move towards the mold base.

[0042] When the side pressing plate 11 abuts against the mold blank, the side pressing plate 11 stops moving due to the reaction force of the mold blank, but the driving mechanism is still running, at this time the side pressing plate 11 pushes the rectangular rod 10 to slide in the guide ring 8, the rectangular rod 10 drives the first moving piston 32 to slide in the first piston cylinder 3, and the first reset spring 33 is compressed.

[0043] Since the first piston cylinder 3 and the second piston cylinder 5 are connected through the conveying pipe 7, and both of them have heat exchange oil, the pressure in the first piston cylinder 3 increases, and the heat exchange oil flows into the second piston cylinder 5 through the conveying pipe 7. The second moving piston 35 in the second piston cylinder 5 moves downward under the action of the pressure of the heat exchange oil, compresses the second reset spring 34, and at the same time the second moving piston 35 drives the driving rod 9 to move downward, and the driving rod 9 drives the upper pressing plate 6 to move downward, until the upper pressing plate 6 abuts against the mold blank.

[0044] Since the upper pressing plate 6 can move up and down, it can adapt to the pressing of mold blanks of different heights, so as to adaptively adjust according to the height of the mold blank.

[0045] During the process that the side pressing plate 11 and the upper pressing plate 6 apply pressure to the mold blank, the pressure sensor in the pressure electromagnetic valve 16 installed on the Y-shaped pipe 15 detects the pressure value in real time. The pressure sensor transmits the detected pressure signal to the controller.

[0046] When the pressure sensor detects that the pressure value is greater than the set threshold value, the controller reacts immediately. The controller controls the electromagnetic valve in the pressure electromagnetic valve 16 to open, so that the first piston cylinder 3 is connected with the oil storage tank 12, and the heat exchange oil in the first piston cylinder 3 flows back to the oil storage tank 12 through the Y-shaped pipe 15, the pressure in the first piston cylinder 3 decreases, and the pressure of the side pressing plate 11 to the mold blank decreases. When the pressure sensor detects that the pressure is less than the set threshold value, the controller reacts immediately, and the controller controls the electromagnetic valve in the pressure electromagnetic valve 16 to close, so as to ensure that the pressure value of the side pressing plate 11 and the upper pressing plate 6 to the mold blank is fixed, to ensure that the pressure value is constant under the condition of stable clamping of the mold blank, to realize the protection of the mold blank, and also to realize the self-protection of the side pressing plate 11 and the like.

[0047] Only by setting the threshold value of the pressure sensor can the strength of pressing the mold blank be changed, and the adjustment is simple and convenient.

[0048] In addition, the controller controls the electromagnet 42 to be powered off, and the magnetic block 43 is reset from the locking slot 40 to the mounting slot 41 under the action of the return spring 44, at this time the driving shaft 20 and the sleeve 39 can rotate relative to each other, the driving mechanism stops driving the moving block 28 to continue moving, and prevents the pressure from further increasing.

[0049] The driving shaft drives the circular plate to rotate: in the above process, the driving shaft 20 is always rotating, and the circular plate 21 fixed on the driving shaft 20 also rotates. The connecting rod 23 is hingedly connected to the circular plate 21 and is eccentrically arranged, and is hingedly connected to the third moving piston 22. When the circular plate 21 rotates, the third moving piston 22 is driven by the connecting rod 23 to make reciprocating motion in the third piston cylinder 17.

[0050] When the third moving piston 22 moves close to the circular plate 21, the third piston cylinder 17 is in a negative pressure state, the inlet one-way valve 25 is opened, the outlet one-way valve 26 is closed, and the heat exchange oil in the oil tank 12 enters the third piston cylinder 17 through the inlet pipe 18; when the third moving piston 22 moves away from the circular plate 21, the pressure in the third piston cylinder 17 increases, the inlet one-way valve 25 is closed, and the outlet one-way valve 26 is opened, and the heat exchange oil in the third piston cylinder 17 enters the heat exchange flow channel 45 through the outlet pipe 19.

[0051] The heat exchange oil flows in the heat exchange flow channel 45, and radiates the support table 1 and the processed mold blank, and then flows back to the oil tank 12 through the return pipe 24, so that the heat exchange oil is recycled. When the side pressing plate 11 and the upper pressing plate 6 apply a set pressure to the mold blank, the driving mechanism only drives the pumping mechanism to work and delivers the heat exchange oil to the heat exchange flow channel 45, so as to ensure that the pressing mechanism works stably at a suitable temperature.

[0052] After the processing is completed, the control electromagnetic valve is opened, the electromagnet 42 is energized, and the motor is reversed; under the action of the first return spring 33 and the second return spring 34, the side pressing plate 11 and the upper pressing plate 6 are reset and move to the two sides and the upper side, so as not to affect the taking and placing of the mold blank.

[0053] The above describes only the preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A height-adjustable mold blank clamping mechanism, comprising a support platform (1), characterized in that, The upper end of the support platform (1) is provided with a movable groove (27), and two movable blocks (28) are movably connected in the movable groove (27). The support platform (1) is equipped with a drive mechanism that drives the two movable blocks (28) to move synchronously. A mounting plate (2) is fixed on the movable block (28), and a movable side pressure plate (11) is mounted on the mounting plate (2). A movable frame (4) is fixed on the side pressure plate (11), and an upper pressure plate (6) that cooperates with the side pressure plate (11) is mounted on the movable frame (4). When the drive mechanism is working, it can make the side pressure plate (11) abut against the mold blank. When the side pressure plate (11) abuts against the mold blank, it can drive the upper pressure plate (6) to move down and abut against the mold blank. The support platform (1) is provided with a heat exchange channel (45) in which heat exchange oil flows. The support platform (1) is equipped with a pumping mechanism connected to the drive mechanism. When the side pressure plate (11) and the upper pressure plate (6) apply a set pressure to the mold blank, the drive mechanism only drives the pumping mechanism to work and delivers heat exchange oil into the heat exchange channel (45).

2. The height-adjustable mold blank clamping mechanism according to claim 1, characterized in that, The movable groove (27) is provided with two guide rails (29), and the movable block (28) is slidably connected to the guide rails (29). The movable groove (27) is rotatably connected with a first screw (30) and a second screw (31). The first screw (30) and the second screw (31) are fixedly connected, and the thread directions of the first screw (30) and the second screw (31) are opposite. The first screw (30) and the second screw (31) pass through the movable block (28) on the same side and are threadedly connected to it.

3. The height-adjustable mold blank clamping mechanism according to claim 2, characterized in that, The drive mechanism includes a drive box (14) mounted on a support platform (1). The drive box (14) contains a meshing worm (38) and a worm wheel (36). A short shaft (37) is fixed on the worm wheel (36). The short shaft (37) is fixedly connected to a second screw (31). A drive component (13) is mounted on the drive box (14). A drive shaft (20) is fixed to the shaft end of the drive component (13). A sleeve (39) is fixed on the worm (38). The sleeve (39) is rotatably connected inside the drive box (14). The drive shaft (20) passes through the sleeve (39) and is rotatably connected to it. The drive shaft (20) and the sleeve (39) can rotate synchronously or relative to each other.

4. The height-adjustable mold blank clamping mechanism according to claim 3, characterized in that, The drive shaft (20) is provided with a mounting groove (41), an electromagnet (42) is fixed in the mounting groove (41), a magnetic block (43) is slidably connected in the mounting groove (41), the magnetic block (43) and the electromagnet (42) have the same magnetic poles on the opposite side, a return spring (44) is fixed on the electromagnet (42) and the magnetic block (43), and the inner wall of the sleeve (39) is provided with a plurality of locking grooves (40) that cooperate with the magnetic block (43), and the plurality of locking grooves (40) are arranged in a ring array in the sleeve (39).

5. The height-adjustable mold blank clamping mechanism according to claim 3, characterized in that, The mounting plate (2) is equipped with a first piston cylinder (3), and a first movable piston (32) is slidably connected inside the first piston cylinder (3). A first reset spring (33) is fixed on the first movable piston (32) and the first piston cylinder (3). A rectangular rod (10) is fixed on the first piston cylinder (3). A guide ring (8) is fixed inside the first piston cylinder (3). The rectangular rod (10) passes through the guide ring (8) and is slidably connected to it. The side pressure plate (11) is fixed on the rectangular rod (10).

6. The height-adjustable mold blank clamping mechanism according to claim 5, characterized in that, The movable frame (4) is equipped with a second piston cylinder (5), and a second movable piston (35) is installed on the second piston cylinder (5). A second return spring (34) is fixed on the second movable piston (35) and the second piston cylinder (5). A drive rod (9) is fixed at the bottom of the second movable piston (35). The upper pressure plate (6) is fixed at the bottom of the drive rod (9). The first piston cylinder (3) and the second piston cylinder (5) are connected through a conveying pipe (7).

7. The height-adjustable mold blank clamping mechanism according to claim 6, characterized in that, An oil storage tank (12) is fixed on the support platform (1). A Y-shaped tube (15) is installed on the oil storage tank (12). The Y-shaped tube (15) is connected to two first piston cylinders (3), and two pressure solenoid valves (16) are installed on the Y-shaped tube (15).

8. The height-adjustable mold blank clamping mechanism according to claim 7, characterized in that, A circular plate (21) is fixed on the drive shaft (20). A third piston cylinder (17) is installed on the support platform (1). A third moving piston (22) is slidably connected inside the third piston cylinder (17). A connecting rod (23) is hinged to the third moving piston (22). The connecting rod (23) is hinged to the circular plate (21) and is eccentrically set on the circular plate (21). The third piston cylinder (17) is connected to the oil storage tank (12) through the liquid inlet pipe (18). The third piston cylinder (17) is connected to the heat exchange channel (45) through the liquid outlet pipe (19). The other end of the heat exchange channel (45) is connected to the oil storage tank (12) through the return pipe (24).

9. The height-adjustable mold blank clamping mechanism according to claim 8, characterized in that, A one-way valve (25) is installed on the inlet pipe (18). The one-way valve (25) only allows heat exchange oil to enter the third piston cylinder (17) through the inlet pipe (18).

10. The height-adjustable mold blank clamping mechanism according to claim 9, characterized in that, The outlet pipe (19) is equipped with an outlet check valve (26), which only allows heat exchange oil to flow into the outlet pipe (19) through the third piston cylinder (17).

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