CN214392292U

CN214392292U - Mold locking device for die casting equipment

Info

Publication number: CN214392292U
Application number: CN202023057749.XU
Authority: CN
Inventors: 吕学勳
Original assignee: Dongguan Yaqiao Precision Die Casting Machinery Co ltd
Current assignee: Dongguan Yaqiao Precision Die Casting Machinery Co ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-10-15
Anticipated expiration: 2030-12-16

Abstract

The utility model discloses a mode locking device for die-casting equipment, including a mode locking fixed point mechanism and connect in a hydraulic pressure mode locking mechanism of mode locking fixed point mechanism, wherein, this mode locking fixed point mechanism includes a fixed point servo motor, a fixed point screw rod, spiro union in a nut of fixed point screw rod and connect a drive structure between fixed point servo motor and nut, and this hydraulic pressure mode locking mechanism acts on the nut. The utility model provides a mode locking device for die-casting equipment can reach the purpose of accurate location compound die, thoroughly stable mode locking, does benefit to the follow-up material operation of penetrating, improves and penetrates material stability to improve foundry goods product quality.

Description

Mold locking device for die casting equipment

Technical Field

The utility model relates to a die-casting technical field especially relates to a mode locking device for die-casting equipment.

Background

Die casting is a precision casting method that forces molten metal into a metal mold having a complicated shape by high pressure. The die casting machine is a machine for die casting, and the die casting machine injects molten metal liquid into a die to be cooled and formed under the action of pressure, and a solid metal casting can be obtained after die opening.

In traditional die casting machine, only adopt the hydraulic cylinder mode locking, only advance and retreat two single actions, the hydraulic cylinder can't carry out the accurate positioning to the mode locking position, leads to the mode locking position inaccurate, and the mode locking effect is not good, and the influence has the stability of the material action of penetrating of powerful pressure to go on.

SUMMERY OF THE UTILITY MODEL

To the above, an object of the utility model is to provide a mode locking device for die-casting equipment can reach the purpose of accurate location compound die, thoroughly stable mode locking, does benefit to the follow-up operation of penetrating the material, improves and penetrates material stability to improve foundry goods product quality.

The utility model discloses a reach the technical scheme that above-mentioned purpose adopted and be:

the utility model provides a mode locking device for die-casting equipment, its characterized in that includes a mode locking fixed point mechanism, and connects in a hydraulic pressure mode locking mechanism of mode locking fixed point mechanism, wherein, this mode locking fixed point mechanism includes a fixed point servo motor, a fixed point screw rod, spiro union in a nut of fixed point screw rod, and connect a drive structure between fixed point servo motor and nut, and this hydraulic pressure mode locking mechanism acts on the nut.

As a further improvement, the hydraulic mold locking mechanism includes a positioning seat, an oil pressure cylinder disposed on the positioning seat, a locking structure disposed in the oil pressure cylinder and acting on the nut and/or the fixed point screw, and a releasing structure disposed in the oil pressure cylinder and acting on the nut.

As a further improvement, the locking structure includes a locking piston disposed in the oil pressure cylinder and behind the nut, and several locking springs disposed between the locking piston and the nut.

As a further improvement, the release structure includes at least one thrust-reversing sleeve disposed on the periphery of the nut and a plurality of thrust-reversing springs disposed between the thrust-reversing sleeve and the positioning seat.

As a further improvement, the nut is provided with an annular boss at the periphery, the locking structure is arranged at the rear of the annular boss, the releasing structure is arranged in the front of the annular boss, and a bearing is respectively arranged between the several locking spring and the annular boss and between the reverse thrust shaft sleeve and the annular boss.

As a further improvement, the nut is disposed in the positioning seat and extends into the oil hydraulic cylinder.

As a further improvement, the transmission structure mainly comprises an action wheel disposed on the output shaft of the fixed-point servo motor, a driven wheel connected to the nut, and a transmission belt disposed between the action wheel and the driven wheel.

The utility model has the advantages that: the mode locking fixed point mechanism with special structural design is combined with the hydraulic mode locking mechanism, so that the purposes of accurately positioning and closing the die and completely stabilizing the mode locking can be achieved, and the subsequent material injection action with strong injection pressure can be favorably finished. The fixed-point servo motor of the mold locking fixed-point mechanism is used for accurately positioning the mold closing position of the mold, so that the precision is high, and the fixed-point servo motor can perform any opening and closing action, fixed-point action, repeated action, multi-section fixed-point action and other more complex opening and closing or fixed-point actions on different molds, so that more, more complex and more diversified actions can be performed; meanwhile, the hydraulic mold locking mechanism completely and thoroughly locks the fixed-point mold, the oil pressure is high, and the mold locking stability is higher.

The above is an overview of the technical solution of the present invention, and the present invention is further explained with reference to the accompanying drawings and the detailed description.

Drawings

FIG. 1 is a schematic structural view of a mold locking device according to the present invention;

FIG. 2 is a schematic view of the internal structure of the middle hydraulic mold locking mechanism of the present invention;

fig. 3 is the structural schematic diagram of the middle mold locking device and the mold of the present invention, which are arranged on the front surface of the longitudinal mounting plate.

Detailed Description

To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose, the following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings and preferred embodiments.

Referring to fig. 1 and 2, an embodiment of the present invention provides a mold locking device 31 for a die casting apparatus, including a mold locking positioning mechanism 311 and a hydraulic mold locking mechanism 312 connected to the mold locking positioning mechanism 311, wherein the mold locking positioning mechanism 311 includes a positioning servo motor 3111, a positioning screw 3112, a nut 3113 screwed to the positioning screw 3112, and a transmission structure 3114 connected between the positioning servo motor 3111 and the nut 3113, and the hydraulic mold locking mechanism 312 acts on the nut 3113.

In the present embodiment, the mold locking device 31 is used for mold locking operation, and when the mold locking device 31 is specifically installed, as shown in fig. 3, 4 mold locking devices 31 are installed on the longitudinal installation plate 1 of the die casting equipment and are arranged around the periphery of the mold 2 on the longitudinal installation plate 1, the fixed point servo motor 3111 is installed on the longitudinal installation plate 1, and the fixed point screw 3112 is directly connected to the slide block 21 of the mold 2, so that the mold locking operation of the mold 2 can be completed.

The fixed-point servo motor 3111 provides a rotary driving force, and the transmission structure 3114 transmits the power to drive the nut 3113 to rotate, so that the fixed-point screw 3112 screwed with the nut 3113 can push the mold 2 to perform a mold closing or opening operation. Specifically, the fixed-point servo motor 3111 drives the nut 3113 to rotate in the forward direction, the fixed-point screw 3112 pushes forward, and the die 2 is closed; on the contrary, the fixed point servo motor 3111 drives the nut 3113 to rotate reversely, the fixed point screw 3112 retreats, and the mold 2 is opened.

By adopting the fixed-point servo motor 3111 in the mold locking fixed-point mechanism 311 to accurately fix the mold closing position of the mold 2, the precision is high, and the fixed-point servo motor 3111 can perform any opening and closing actions, fixed-point actions, repeated actions, multi-section fixed-point actions, and more complex other opening and closing or fixed-point actions on different molds 2, so that more, more complex and more diversified actions can be performed. Then, the hydraulic mold locking mechanism 312 completely locks the fixed mold 2, and the hydraulic pressure is high, so that the mold locking stability is high. Therefore, the die locking fixed point mechanism 311 is combined with the hydraulic die locking mechanism 312, so that the purposes of accurately positioning and closing the die and completely stabilizing the die locking can be achieved, the subsequent material injection operation by a material injection device of the die casting equipment is facilitated, the material injection stability is improved, and the quality of a casting product is improved.

In the embodiment, as shown in fig. 2, the hydraulic mold locking mechanism 312 includes a positioning seat 3121 disposed on the longitudinal mounting plate 1, a hydraulic cylinder 3122 disposed on the positioning seat 3121, a locking structure 3123 disposed in the hydraulic cylinder 3122 and acting on the nut 3113 and/or the fixed point screw 3112, and a releasing structure 3124 disposed in the hydraulic cylinder 3122 and acting on the nut 3113, wherein the nut 3113 is disposed in the positioning seat 3121 and extends into the hydraulic cylinder 3122. Carry out accurate fixed point back by mode locking fixed point mechanism 311 to mould 2 compound die position, provide the oil pressure effort by oil hydraulic cylinder 3122 again, forward promote locking structure 3123, promote a subsection stroke toward mould 2 direction with nut 3113 and/or fixed point screw rod by locking structure 3123, with the deflection of absorbing mechanical structure, make nut 3113 and fixed point screw rod lock mould 2, because oil pressure is big, reach the purpose of thorough mode locking completely, so that subsequent penetrating material operation. After the material injection is completed and the mold opening is needed, the acting force of the oil hydraulic cylinder 3122 disappears, and the releasing structure 3124 reversely pushes the nut 3113 for a short stroke, so that the nut 3113 returns to the position where the mold locking fixed point mechanism 311 fixes the position, so that the mold locking fixed point mechanism 311 reversely drives to drive the nut 3113 to reversely rotate, thereby driving the fixed point screw 3112 to retreat, and completing the mold opening action of the mold 2.

Specifically, the locking structure 3123 includes a locking piston 31231 disposed in the hydraulic cylinder 3122 behind the nut 3113, and a plurality of locking springs 31232 disposed between the locking piston 31231 and the nut 3113. By the oil pressure effect of oil hydraulic cylinder 3122, drive locking piston 31231 and act on nut 3113 for nut 3113 moves a small segment stroke toward mould 2, in order to absorb mechanical structure's deflection, makes nut 3113 and fixed point screw rod lock mould 2, reaches the purpose of thorough mode locking completely, so that subsequent shooting operation. At the same time, the locking spring 31232 is compressed. When the mold opening is required after the shot is completed, the hydraulic action of the hydraulic cylinder 3122 is released, and the elastic restoring force of the lock spring 31232 acts on the lock piston 31231 to retract the lock piston 31231.

Specifically, the releasing structure 3124 includes at least one thrust sleeve 31241 sleeved on the periphery of the nut 3113, and a plurality of thrust springs 31242 disposed between the thrust sleeve 31241 and the positioning seat 3121. The back-pressure spring 31242 is compressed when the locking piston 31231 moves the nut 3113 a short distance in the direction of the die 2. During the mold opening process, after the locking piston 31231 retreats, the elastic restoring force of the back-push spring 31242 acts on the back-push shaft sleeve 31241 and the nut 3113, so that the nut 3113 retreats to the position fixed by the mold locking fixed point mechanism 311, so that the mold locking fixed point mechanism 311 is driven reversely, and the mold opening operation of the mold 2 is completed.

In order to apply a force to the nut 3113 and to lock and release the nut 3113, in this embodiment, an annular boss 31131 is protruded from an outer periphery of the nut 3113, the locking structure 3123 is disposed behind the annular boss 31131, the releasing structure 3124 is disposed in front of the annular boss 31131, a bearing 3125 is disposed between the locking springs 31232 and the annular boss 31131 and between the thrust sleeve 31241 and the annular boss 31131, and the axial friction and the radial friction during the action of the nut 3113 can be reduced due to the arrangement of the bearing 3125, thereby increasing the speed and the accuracy of the action of the nut 3113.

In this embodiment, as shown in fig. 1, the transmission structure 3114 mainly includes a driving wheel 31141 disposed on the output shaft of the fixed point servo motor 3111, a driven wheel 31142 connected to the nut 3113, and a transmission belt 31143 enclosed between the driving wheel 31141 and the driven wheel 31142. The driving pulley 31141, the driven pulley 31142 and the transmission belt 31143 are combined to precisely transmit the rotation driving force of the fixed point servo motor 3111 to the nut 3113 to rotate the nut 3113.

In this embodiment, both the fixed-point servo motor 3111 and the oil hydraulic cylinder 3122 can be controlled by a PLC controller, so that each operation can be precisely controlled with high accuracy. Meanwhile, compared with the power source of a common oil pressure motor which needs to be powered up all the time, the problem of large power consumption exists, the motor of the fixed point servo motor 3111 is powered up only when being started, the power consumption is low, the electricity is saved, and the cost is reduced; meanwhile, the phenomena of oil leakage, high noise and the like of a common oil pressure motor can be avoided.

It should be noted that the present invention discloses a mold locking device, which is an improvement on a specific structure, and is not an innovative point of the present invention for a specific control method. To the fixed point servo motor 3111, the oil hydraulic cylinder 3122 and the PLC controller and other parts involved in the present invention, they may be universal standard parts or parts known to those skilled in the art, and the structure, principle and control method are known to those skilled in the art through technical manuals or conventional experimental methods.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that other structures obtained by adopting the same or similar technical features as the above embodiments of the present invention are all within the protection scope of the present invention.

Claims

1. The utility model provides a mode locking device for die-casting equipment, its characterized in that includes a mode locking fixed point mechanism, and connects in a hydraulic pressure mode locking mechanism of mode locking fixed point mechanism, wherein, this mode locking fixed point mechanism includes a fixed point servo motor, a fixed point screw rod, spiro union in a nut of fixed point screw rod, and connect a drive structure between fixed point servo motor and nut, and this hydraulic pressure mode locking mechanism acts on the nut.

2. The die-locking apparatus for die-casting equipment according to claim 1, wherein the hydraulic clamping mechanism includes a positioning base, an oil hydraulic cylinder provided on the positioning base, a locking structure provided in the oil hydraulic cylinder and acting on the nut and/or the set screw, and a releasing structure provided in the oil hydraulic cylinder and acting on the nut.

3. The die-locking apparatus for die-casting equipment according to claim 2, wherein said locking structure comprises a locking piston disposed in the oil hydraulic cylinder behind the nut, and a plurality of locking springs disposed between the locking piston and the nut.

4. The mold clamping apparatus for die casting equipment as claimed in claim 3, wherein said releasing structure comprises at least one thrust sleeve fitted around the nut, and a plurality of thrust springs disposed between the thrust sleeve and the positioning seat.

5. The die locking apparatus for die casting equipment according to claim 4, wherein an annular boss is protruded at an outer periphery of said nut, said locking structure is disposed behind said annular boss, said releasing structure is disposed in front of said annular boss, and a bearing is disposed between said plurality of locking springs and said annular boss, and between said thrust sleeve and said annular boss, respectively.

6. The die locking apparatus for die casting equipment according to claim 2, wherein the nut is disposed in the positioning seat and extends into the oil hydraulic cylinder.

7. The mold clamping apparatus for die casting equipment according to any one of claims 1 to 6, wherein the transmission structure is mainly composed of a driving wheel provided on the output shaft of the fixed point servo motor, a driven wheel connected to the nut, and a transmission belt enclosed between the driving wheel and the driven wheel.