Die opening safety protection locking device for movable template of squeeze casting machine

Abstract

The utility model relates to a die opening safety protection locking device for a movable template of an extrusion casting machine, which comprises a die opening safety protection locking component arranged between an upper fixed template and the movable template, and the die opening safety protection locking component comprises a fixed module, a movable module, a locking module and a driver in transmission connection with the locking module, the fixed module is fixedly connected with the upper fixed mold plate, the movable module is fixedly connected with the movable mold plate, and the movable module moves along with the movable mold plate and has a mold opening position state and a mold closing position state; the locking module moves along with the output end of the driver, is arranged on the mold opening safety protection locking assembly and is provided with a locking position and an unlocking position. The movable module and the fixed module have a locking state and an unlocking state; by means of the arrangement, it can be guaranteed that the sliding template is in a locked state when the extrusion casting machine opens a mold, and it can be guaranteed that the sliding template cannot fall off when an electronic element and hydraulic equipment break down.

Description

Technical Field

[0001] The utility model relates to the technical field of extrusion casting machines, in particular to a safety protection locking device for opening a mold of an extrusion casting motorized template. Background Art

[0002] Squeeze casting machine is one of the commonly used equipment in casting production. Squeeze casting technology is widely used in material forming manufacturing industries such as casting production. In the vertical squeeze casting machine, there are moving platens and static platens, and the upper and lower molds are installed on the moving platens and the lower static platens respectively. In the production process of the foundry industry, the template is replaced frequently. The template replacement installation process and the debugging process after installation, as well as the usual maintenance and repair, all require the squeeze casting machine to be carried out in the open mold state. The open mold state requires the moving platen of the squeeze casting machine to move up to the highest point and lock it to separate the upper and lower molds. In the mold opening process, in order to ensure the personal safety of workers and equipment safety, a device is required to ensure that the moving platen must be locked when it is locked at the highest point and will not fall. In the squeeze casting machine, electrical components and hydraulic devices are generally used to ensure that the moving platen will not fall, but electronic components and hydraulic equipment are not absolutely reliable. When electronic components and hydraulic equipment fail due to mechanical damage or aging, there is no reliable insurance mechanism to prevent the moving platen from falling in time. In addition, electronic components and hydraulic equipment have complex structures and are difficult to repair. During maintenance, workers may not be able to promptly and accurately discover faults or failures of electronic components and hydraulic equipment, which increases the probability of the moving plate falling and causing harm to workers during mold opening. Compared with electronic components and hydraulic equipment, mechanical devices have simple structures and are easy to repair. They are more difficult to fail, and the insurance mechanism is more reliable. They are the most direct and reliable way to lock the moving plate. Utility Model Content

[0003] The purpose of the utility model is to provide a safety protection locking device for extrusion casting motorized mold opening, which has the characteristics of easy processing, convenient installation and maintenance, and can provide direct and reliable protection for personnel and equipment. It can ensure that the sliding mold is in a locked state when the extrusion casting machine opens the mold, and can ensure that the sliding mold will not fall when the electronic components and hydraulic equipment fail.

[0004] The purpose of the utility model is achieved in this way:

[0005] A mold opening safety protection locking device for extrusion casting motorized templates, comprising a mold opening safety protection locking assembly arranged between an upper fixed template and a movable template, the mold opening safety protection locking assembly comprising a fixed module, a movable module, a locking module, and a driver drivingly connected to the locking module, the fixed module is fixedly connected to the upper fixed template, the movable module is fixedly connected to the movable template, and the movable module and the locking module are respectively movably arranged on the mold opening safety protection locking assembly;

[0006] The movable module moves with the movable template and has a mold opening position state and a mold closing position state;

[0007] The locking module moves with the output end of the driver and is on the mold opening safety protection locking component and has a locking position and an unlocking position;

[0008] There is a locked state and an unlocked state between the movable module and the fixed module;

[0009] The movable template approaches the upper fixed template to perform a mold opening action. When the movable template slides to the corresponding mold opening position, the movable module is in the mold opening position state, and the driver drives the locking module to move to the locking position, and the locking module is inserted into the fixed module and the movable module. The movable module and the fixed module are in a locked state to lock the mold opening position of the movable template at this time, so that the movable template can be ensured to be in a locked state when the extrusion casting machine opens the mold, and the movable template can be ensured not to fall when electronic components and hydraulic equipment fail.

[0010] The movable platen moves away from the upper fixed platen for mold closing action, and the movable platen approaches the lower fixed platen. The mold is placed between the movable platen and the lower fixed platen. The upper mold assembly of the mold is fixed on the movable platen, and the lower mold assembly of the mold is fixed on the lower fixed platen.

[0011] The movable module is in a locked state with the fixed module, the driver drives the locking module to move to the unlocked position, the movable module is in an unlocked state with the fixed module, the movable template moves away from the upper fixed template to perform a mold closing action, and when the movable template slides to the corresponding mold closing position, the movable module is in the mold closing position state.

[0012] The fixed module of the mold opening safety protection locking assembly includes a cover plate fixed on the upper fixed mold plate, and the movable module of the mold opening safety protection locking assembly includes a locking rod inserted into the movable mold plate and the cover plate up and down, and one end of the locking rod is fixedly connected to the movable mold plate; when the movable mold plate moves, the locking rod is driven to move up and down along the cover plate of the upper fixed mold plate.

[0013] A first locking hole and a second locking hole are provided between the cover plate and the locking rod, and the locking module of the mold opening safety protection locking assembly includes a locking rod fixing pin correspondingly arranged on one side of the first locking hole and the second locking hole, and the output end of the driver is drivingly connected with the locking rod fixing pin;

[0014] When the movable template slides to the corresponding mold opening position during the mold opening process, the first locking hole and the second locking hole correspond to each other and form a locking position of the locking module, the driver drives the locking rod fixing pin to move toward the locking position, the locking rod fixing pin is inserted into the first locking hole and the second locking hole, the cover plate and the locking rod are in a locked state, and then the mold opening position of the movable template is locked;

[0015] The driver drives the lock rod fixing pin to move along the unlocking position. When the lock rod fixing pin retracts along the first locking hole and the second locking hole, the cover plate and the lock rod are in the unlocked state. The moving template drives the lock rod to move along the cover plate. The moving template moves away from the upper fixed template to perform the mold closing action. The lock rod moves to the mold closing position state, and there is an up-and-down dislocation between the first locking hole and the second locking hole.

[0016] The inner diameters of the first locking hole and the second locking hole are the same, and the first locking hole and the second locking hole are horizontal circular through holes. The circular through holes can make the force on the lock rod more uniform and reduce the risk of the lock rod breaking.

[0017] The fixed module of the mold opening safety protection locking assembly further includes a shield fixed on the cover plate. There is a cavity for the lock rod to move up and down between the cover plate and the shield. The mold opening safety protection locking assembly covers the top of the lock rod through the shield.

[0018] The shield is provided with a vent hole communicating with the cavity for the lock rod to move up and down. The vent hole is arranged on the top of the shield, or the top of the shield is a fully open structure.

[0019] There is a locking position for cooperating with the locking module between the cover plate and the lock rod. The cover plate is provided with a in-place induction switch for detecting the insertion of the locking module into the locking position, and the cover plate is provided with a detachment induction switch for detecting the detachment of the locking module from the locking position. The locking state and the unlocking state between the cover plate and the lock rod are detected through the in-place induction switch and the detachment induction switch.

[0020] The cover plate is provided with detection holes corresponding to the in-place induction switch and the detachment induction switch; the in-place induction switch and the detachment induction switch detect the position state of the locking module through the corresponding detection holes, which can enable the induction switch to directly detect whether the lock rod fixing pin is in place or completely detached.

[0021] The cover plate is provided with an induction switch support plate for fixing the in-place induction switch and the detachment induction switch; the induction switch support plate is fixed on the cover plate. One side of the induction switch support plate extends towards the outside of the cover plate and forms a support block, and the in-place induction switch and the detachment induction switch are fixed on the support block.

[0022] The cover plate is provided with a lock rod brass bushing for cooperating with the lock rod.

[0023] The lock rod is provided with a lock rod fixing nut for fixing on the moving template.

[0024] The beneficial effects of the present utility model are as follows:

[0025] 1. Relying on a simple and reliable mechanical locking structure, when the electronic components and hydraulic equipment are damaged and fail, the lock rod can still be fixed by the lock rod fixing pin, thereby locking the sliding template. At the same time, the two induction switches can improve the accuracy of the device, increase the reliability, and effectively reduce the accident rate.

[0026] 2. Considering that the locking rod is subject to large forces and has a relatively high risk of fracture, the connection part between the locking rod and the cover plate is designed such that the locking rod fixing pin is inserted into a round hole. The round hole can make the force on the locking rod more uniform and reduce the risk of the locking rod breaking.

[0027] 3. When the moving template is in the mold opening position, the locking rod fixing pin fixes the locking rod, preventing the moving template from falling during the process of disassembling and replacing the mold, and avoiding the occurrence of safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 FIG. is a schematic structural diagram of a mold opening safety protection locking component provided between a moving template and an upper fixed template according to an embodiment of the present invention.

[0029] Figure 2 FIG. is a schematic overall structural diagram of a mold opening safety protection locking component according to an embodiment of the present invention.

[0030] Figure 3 FIG. is a schematic overall structural diagram of a mold opening safety protection locking component from another perspective according to an embodiment of the present invention.

[0031] Figure 4 FIG. is a schematic assembly and disassembly structural diagram of a mold opening safety protection locking component according to an embodiment of the present invention.

[0032] Figure 5 FIG. is a schematic structural diagram of the locking rod fixing pin of a mold opening safety protection locking component according to an embodiment of the present invention inserted into the cover plate and the locking position of the locking rod.

[0033] Figure 6 FIG. is a schematic cross-sectional structural diagram of the cover plate in a mold opening safety protection locking component according to an embodiment of the present invention.

[0034] Figure 7 FIG. is a schematic structural diagram of a moving template away from the lower fixed template and in the mold opening state according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The present invention will be further described below in conjunction with the drawings and embodiments.

[0036] Refer to Figures 1 - 3 , a mold opening safety protection locking device for an extrusion casting machine moving template includes a mold opening safety protection locking component 2 provided between an upper fixed template 1 and a moving template 4.

[0037] A plurality of guide columns 3 are further provided between the upper fixed template 1 and the moving template 4. The guide columns 3 are arranged at the corner positions between the upper fixed template 1 and the moving template 4. The plurality of guide columns 3 penetrate through the upper fixed template 1 and the moving template 4, and the upper fixed template 1 and the moving template 4 are connected in series through the guide columns 3.

[0038] The mold opening safety protection locking assembly 2 comprises a shield 2.1, a driver 2.2, a locking rod fixing pin 2.3, an induction switch support plate 2.4, an in-position induction switch 2.51, a disengagement induction switch 2.52, a cover plate 2.6, a locking rod copper 2.7, a locking rod 2.8, and a locking rod fixing nut 2.9.

[0039] The upper fixed mold plate 1 is provided with a fixing position for supporting the cover plate 2.6, and the cover plate 2.6 is fixed to the upper fixed mold plate 1 by welding or bolts, so that the upper end of the mold opening safety protection locking assembly 2 is fixed to the upper fixed mold plate 1 through the cover plate 2.6.

[0040] The locking rod 2.8 of the mold opening safety protection locking assembly 2 is inserted through the fixed mold plate 1 and the movable mold plate 4, and the locking rod fixing nut 2.9 is sleeved on the bottom end of the locking rod 2.8. The locking rod fixing nut 2.9 is fixedly connected to the locking rod 2.8 through a thread (it can be understood that the locking rod fixing nut 2.9 is provided with an internal threaded hole, and the locking rod 2.8 is provided with an external thread matching the internal threaded hole); so that the lower end of the mold opening safety protection locking assembly 2 is fixed to the movable mold plate 4 through the locking rod fixing nut 2.9.

[0041] The shield 2.1 is installed on the boss of the cover plate 2.6 by screws. The shield 2.1 is provided with a vent hole 2.11. The vent hole 2.11 facilitates the movement of the lock rod 2.8. When the lock rod 2.8 moves upward, the gas in the shield 2.1 is squeezed out through the vent hole 2.11. The lock rod 2.8 and the vertical through hole in the center of the cover plate 2.6 are matched through the lock rod copper 2.7; the upper end of the lock rod 2.8 and the cover plate 2.6 are both provided with a horizontal circular through hole with the same inner diameter. The circular through hole can make the lock rod 2.8 evenly stressed and not easy to break. The two circular through holes are matched and fixed by the lock rod fixing pin 2.3. When the lock rod 2.8 is in place, the lock rod fixing pin 2.3 is inserted into the circular through hole between the lock rod 2.8 and the cover plate 2.6 for matching and fixing. The lock rod fixing pin 2.3 is controlled to extend and retract by the driver 2.2. The locking and unlocking of the movable template 4 are detected and controlled by the in-place sensing switch 2.51 and the disengagement sensing switch 2.52 on the cover plate 2.6.

[0042] See also Figures 1 - 4 There are two front and rear sensing switches on both sides of the cover plate 2.6. The front part is a disengagement sensing switch 2.52. The disengagement of the locking rod fixing pin 2.3 is not confirmed until the locking rod fixing pin 2.3 leaves the sensing range of the disengagement sensing switch 2.52, and the movable template 4 can be moved; the rear part is an in-position sensing switch 2.51. The in-position sensing switch 2.51 is not confirmed until the locking rod fixing pin 2.3 is pushed into position and triggers the in-position sensing switch 2.51, and the movable template 4 can be locked.

[0043] The specific operation process is as follows: During the use of the mold opening safety protection locking component 2, the moving template 4 moves upward, driving the locking rod 2.8 to move upward. When the locking rod 2.8 moves into place, the driver 2.2 pushes the locking rod fixing pin 2.3 forward. When the locking rod fixing pin 2.3 is pushed forward a certain distance, the in-place induction switch 2.51 is triggered to sense the in-place signal, confirming that the locking rod fixing pin 2.3 is in place. At this time, the moving template 4 is locked. When the moving template 4 needs to be unlocked, the driver 2.2 is controlled to retract the locking rod fixing pin 2.3. When the locking rod fixing pin 2.3 retracts a certain distance, the detachment induction switch 2.52 is triggered to confirm that the locking rod fixing pin 2.3 is detached. At this time, the moving template 4 is unlocked.

[0044] As Figure 2 、 Figure 3 、 Figure 5 shown, there are two screw holes and two through holes on each side of the cover plate 2.6. The through holes are above the screw holes, and there are lubricating oil holes at the vertical round holes that cooperate with the locking rod 2.8. The in-place induction switch 2.51 and the detachment induction switch 2.52 are installed on the induction switch support plate 2.4 by screws. The induction switch support plate 2.4 is installed on both sides of the safety protection locking cover plate 2.6 through the screw holes on both sides of the safety protection locking cover plate 2.6. The induction parts of the in-place induction switch 2.51 and the detachment induction switch 2.52 at the front and back on both sides are respectively aligned with the through holes on both sides of the cover plate 2.6, and a signal can be sensed when the locking rod fixing pin 2.3 passes through.

[0045] In this embodiment, the cover plate 2.6 is provided with a first locking hole 2.61 that cooperates with the locking rod fixing pin 2.3. The cover plate 2.6 is provided with detection holes 2.62 corresponding to the in-place induction switch 2.51 and the detachment induction switch 2.52. The cover plate 2.6 is provided with a cavity 2.63 that communicates with the ventilation hole 2.11 of the protective cover 2.1, facilitating the up and down movement of the locking rod 2.8 between the protective cover 2.1 and the cover plate 2.6 during the mold opening and closing process of the moving template 4.

[0046] The first locking hole 2.61 and the detection hole 2.62 of the in-place induction switch 2.51 communicate with the cavity 2.63 respectively; the locking rod 2.8 is provided with a second locking hole 2.81 corresponding to the first locking hole 2.61. When closing the mold, the moving template 4 moves away from the upper fixed template 1 and moves downward close to the lower fixed template 5. The locking rod fixing pin 2.3 is in the retracted state (pending state), and the moving template 4 drives the locking rod 2.8 to move downward between the protective cover 2.1 and the lower part of the cover plate 2.6 to perform the mold closing action.

[0047] The detection hole 2.62 of the detachment induction switch 2.52 communicates with the first locking hole 2.61. When the locking rod fixing pin 2.3 is in the retracted state, a part of the locking rod fixing pin 2.3 is located on the first locking hole 2.61, so the detachment induction switch 2.52 senses the locking rod fixing pin 2.3.

[0048] When the mold is opened, the movable template 4 approaches the upper fixed template 1, and the movable template 4 drives the locking rod 2.8 to move upward along the shield 2.1 and the cover plate 2.6. When the sliding template 4 slides to the corresponding position angle, the driver 2.2 drives the locking rod fixing pin 2.3 to insert the second locking hole 2.81 and the first locking hole 2.61 to lock the locking rod 2.8 and the sliding template 4 in the mold opening position.

[0049] When the mold needs to be closed, the driver 2.2 controls the locking rod fixing pin 2.3 to disengage from the second locking hole 2.81 and the first locking hole 2.61, triggering the disengagement sensing switch 2.52, and the locking rod 2.8 and the movable mold plate 4 are unlocked.

[0050] In this embodiment, the driver 2.2 can be a motor that is transmission-connected to the locking rod fixing pin 2.3, or the driver 2.2 can be a cylinder that is transmission-connected to the locking rod fixing pin 2.3, the movable telescopic rod of the motor is connected to the locking rod fixing pin 2.3, or the telescopic piston rod of the cylinder is connected to the locking rod fixing pin 2.3.

[0051] In this embodiment, the locking rod copper 2.7 is partially inserted into the cavity 2.63 of the cover plate 2.6, and the height position of the insertion part of the locking rod copper 2.7 is lower than the height position of the first locking hole 2.61 on the cavity 2.63 to prevent the locking rod fixing pin 2.3 from being unable to insert into the second locking hole 2.81 and the first locking hole 2.61.

[0052] The locking rod copper member 2.7 is a hollow structure, which facilitates the insertion of the locking rod 2.8 into the locking rod copper member 2.7. The locking rod copper member 2.7 can be fixed on the bottom of the cover plate 2.6 by means of a thread or a connecting flange.

[0053] The above is a preferred embodiment of the utility model, which shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A safety protection locking device for the movable platen of an impact extrusion casting machine, characterized in that: It includes a mold opening safety protection locking component (2) arranged between the upper fixed template (1) and the moving template (4). The mold opening safety protection locking component (2) includes a fixed module, a movable module, a locking module, and a driver (2.2) drivingly connected to the locking module. The fixed module is fixedly connected to the upper fixed template (1), the movable module is fixedly connected to the moving template (4), and the movable module and the locking module are respectively movably arranged on the mold opening safety protection locking component (2); The movable module moves with the moving template (4) and has a mold opening position state and a mold closing position state; The locking module moves with the output end of the driver (2.2) and is arranged on the mold opening safety protection locking component (2) and has a locking position and an unlocking position; There are a locking state and an unlocking state between the movable module and the fixed module; When the moving template (4) moves away from the upper fixed template (1) to perform a mold opening action and slides to the corresponding mold opening position, the movable module is in the mold opening position state. The driver (2.2) drives the locking module to move to the locking position, and the locking module inserts between the fixed module and the movable module. The movable module and the fixed module are in the locking state to lock the mold opening position of the moving template (4) at this time; When the movable module and the fixed module are in the locking state, the driver (2.2) drives the locking module to move to the unlocking position, and the movable module and the fixed module are in the unlocking state. The moving template (4) moves towards the upper fixed template (1) to perform a mold closing action. When the moving template (4) slides to the corresponding mold closing position, the movable module is in the mold closing position state.

2. The die-casting machine moving platen mold opening safety protection locking device according to claim 1, characterized in that: The fixed module of the mold opening safety protection locking component (2) includes a cover plate (2.6) fixed on the upper fixed template (1). The movable module of the mold opening safety protection locking component (2) includes a locking rod (2.8) inserted vertically between the moving template (4) and the cover plate (2.6). One end of the locking rod (2.8) is fixedly connected to the moving template (4); when the moving template (4) moves, it drives the locking rod (2.8) to move up and down along the cover plate (2.6) of the upper fixed template (1).

3. The open-die safety protection locking device for the movable platen of the squeeze casting machine according to claim 2, wherein: A first locking hole (2.61) and a second locking hole (2.81) are provided between the cover plate (2.6) and the locking rod (2.8). The locking module of the mold opening safety protection locking component (2) includes a locking rod fixing pin (2.3) correspondingly arranged on one side of the first locking hole (2.61) and the second locking hole (2.81). The output end of the driver (2.2) is drivingly connected to the locking rod fixing pin (2.3); When the moving template (4) slides to the corresponding mold opening position during the mold opening process, the first locking hole (2.61) and the second locking hole (2.81) correspond to form the locking position of the locking module. The driver (2.2) drives the locking rod fixing pin (2.3) to move towards the locking position, and the locking rod fixing pin (2.3) inserts into the first locking hole (2.61) and the second locking hole (2.81). The cover plate (2.6) and the locking rod (2.8) are in the locking state, thereby locking the mold opening position of the moving template (4); The driver (2.2) drives the lock rod fixing pin (2.3) to move along the unlocking position. When the lock rod fixing pin (2.3) retracts along the first locking hole (2.61) and the second locking hole (2.81), the cover plate (2.6) and the lock rod (2.8) are in the unlocked state. The moving template (4) drives the lock rod (2.8) to move along the cover plate (2.6). The moving template (4) moves away from the upper fixed template (1) for the mold closing action. The lock rod (2.8) moves to the mold closing position state, and there is an up-and-down offset between the first locking hole (2.61) and the second locking hole (2.81). The inner diameters of the first locking hole (2.61) and the second locking hole (2.81) are the same, and the first locking hole (2.61) and the second locking hole (2.81) are horizontal circular through holes.

4. The die-casting machine moving platen mold opening safety protection locking device according to claim 2, characterized in that: The fixed module of the mold opening safety protection locking assembly (2) further includes a shield (2.1) fixed on the cover plate (2.6). A cavity for the lock rod (2.8) to move up and down is provided between the cover plate (2.6) and the shield (2.1). The mold opening safety protection locking assembly (2) covers the top of the lock rod (2.8) through the shield (2.1).

5. The die-casting machine moving platen mold opening safety protection locking device according to claim 4, characterized in that: The shield (2.1) is provided with a vent hole (2.11) communicating with the cavity for the lock rod (2.8) to move up and down.

6. The die-casting machine moving platen opening safety protection locking device according to claim 2, wherein: A locking position for cooperating with the locking module is provided between the cover plate (2.6) and the lock rod (2.8). The cover plate (2.6) is provided with an in-place induction switch (2.51) for detecting the insertion of the locking module into the locking position, and the cover plate (2.6) is provided with a detachment induction switch (2.52) for detecting the detachment of the locking module from the locking position. The locking state and the unlocking state between the cover plate (2.6) and the lock rod (2.8) are detected through the in-place induction switch (2.51) and the detachment induction switch (2.52).

7. The open-die safety protection locking device for the movable platen of the squeeze casting machine according to claim 5, wherein: Detection holes (2.62) are provided on the cover plate (2.6) corresponding to the in-place induction switch (2.51) and the detachment induction switch (2.52); the in-place induction switch (2.51) and the detachment induction switch (2.52) detect the position state of the locking module through the corresponding detection holes (2.62).

8. The die-casting machine moving platen opening safety protection locking device according to claim 5, characterized in that: The cover plate (2.6) is provided with an induction switch support plate (2.4) for fixing the in-place induction switch (2.51) and the detachment induction switch (2.52); the induction switch support plate (2.4) is fixed on the cover plate (2.6). One side of the induction switch support plate (2.4) extends outwardly towards the outside of the cover plate (2.6) and forms a support block (2.41). The in-place induction switch (2.51) and the detachment induction switch (2.52) are fixed on the support block (2.41).

9. The die-casting machine moving platen opening safety protection locking device according to claim 2, characterized in that: The cover plate (2.6) is provided with a lock rod brass bushing (2.7) for cooperating with the lock rod (2.8).

10. The die-casting machine moving platen opening safety protection locking device according to claim 2, characterized in that: The lock rod (2.8) is provided with a lock rod fixing nut (2.9) for fixing on the moving template (4).

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