Automatic lubricating device for sliding part of die-casting die

Abstract

The invention relates to the technical field of die-casting die lubrication, and particularly discloses an automatic lubricating device for a die-casting die sliding part, comprising: a suction assembly comprising a piston cylinder, a piston rod arranged in the piston cylinder and driven by the impulse of a die-casting die, and a feed pipe and a discharge pipe which are respectively arranged on two sides of the piston cylinder and are provided with one-way valves, the feeding pipe is communicated with a lubricant box; the separate injection assembly comprises a plurality of temporary storage tanks communicating with the discharging pipes, a distribution disc communicating with the bottoms of the temporary storage tanks and a plurality of distribution branch pipes communicating with the distribution disc, and the ends of the distribution branch pipes extend to the side walls of sliding ways of all the sliding pieces of the die-casting die; and the adjusting assembly comprises a plurality of detection units arranged on the side walls of the sliding ways of the sliding parts correspondingly and control units arranged in the temporary storage tanks and used for adjusting and controlling the flow of the lubricating agent through the detection units, and the problems that the sliding parts of a traditional die-casting die are lubricated manually, the maintenance time is long, the labor intensity is large, and the working efficiency is low are solved.

Description

Technical Field

[0001] The present application relates to the technical field of die-casting die lubrication, and specifically discloses an automatic lubrication device for a die-casting die sliding part. Background Art

[0002] The die-casting process is a precision casting method that injects molten metal into the mold cavity under high pressure and rapidly cools it to form the metal. However, the sliding parts (such as sliders, core pullers, and bevel pins) in the die-casting mold are prone to wear, seizure, and even failure due to poor lubrication due to frequent relative motion with the sidewalls of the slideway and high temperatures. Currently, most sliding parts in the die-casting mold are lubricated manually by periodically adding lubricants. This lubrication method not only requires long maintenance time, high labor intensity, and low work efficiency, but also, during the design and operation of the die-casting mold, the kinetic energy of the punch is inevitably higher than the required performance during the die-casting process, and this part of the punch kinetic energy is usually not effectively utilized.

[0003] Moreover, during the operation of the die-casting mold, the temperature of the position where the sliding part is located will directly affect the lubricating performance of the lubricant on the sliding part. Under normal circumstances, controlling the temperature at 200 to 250°C can make the lubricant have a better lubricating effect. Too high a temperature will cause the lubricant to carbonize or stick, and too low a temperature will cause the lubricant to agglomerate. However, the current lubrication method lacks the ability to adjust the addition of lubricant in real time according to the temperature of the sliding part. When the sliding part is poorly lubricated, the worn parts cannot be lubricated in time. Therefore, in view of this, the present invention provides an automatic lubrication device for the sliding part of the die-casting mold to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that the sliding parts of the traditional die-casting mold adopt manual lubrication, which has long maintenance time, high labor intensity and low work efficiency.

[0005] In order to achieve the above object, the basic solution of the present invention provides an automatic lubrication device for a die-casting mold sliding member, comprising:

[0006] The suction assembly includes a piston cylinder, a piston rod disposed in the piston cylinder and driven by the impulse of the die-casting mold, a feed pipe and a discharge pipe respectively disposed on both sides of the piston cylinder and provided with a one-way valve, wherein the feed pipe is connected to a lubricant tank;

[0007] The dispensing assembly includes a plurality of temporary storage tanks respectively connected to the discharge pipes, a distribution plate respectively connected to the bottom of the temporary storage tanks, and a plurality of distribution branches connected to the distribution plates, the ends of the distribution branches extending to the side walls of the slideways of the sliding parts of the die-casting mold;

[0008] The regulating assembly comprises a plurality of detection units respectively arranged on the side walls of the slideways of the sliding members, and a control unit arranged in each temporary storage tank and regulating and controlling the flow of the lubricant by the detection units.

[0009] The principles and effects of this basic solution are:

[0010] Compared with the prior art, the present invention utilizes the excess kinetic energy of the punch during the operation of the die-casting mold to drive the piston rod to move, so as to achieve the purpose of automatically sucking lubricant, and uses the detection unit to detect the temperature range of the slide side walls of each sliding part in real time to control the operation of the adjustment unit to adjust the lubricant flow from the temporary tank to the distribution plate. It can not only conveniently and automatically add lubricant to the sliding parts of the die-casting mold, but also adjust the amount of lubricant added according to different sliding parts and even the different positions of the sliding parts, so that the lubricant can lubricate the worn parts in time, effectively solving the problem of manual lubrication of the sliding parts of traditional die-casting molds, long maintenance time, high labor intensity and low work efficiency.

[0011] Furthermore, the detection unit includes an air cavity provided on the side wall of the slideway of each sliding member, a sliding cavity communicated with the cylinder, and a guide plug in sliding and sealing connection with the sliding cavity;

[0012] The control unit includes a fixed ring disposed in the temporary storage tank and an adjusting piston slidably connected in the temporary storage tank, and an adjusting gap is formed between the fixed ring and the adjusting piston;

[0013] The adjustment assembly further includes a connecting unit provided between the guide plug and the adjustment piston.

[0014] The temperature change of the slideway of each sliding part drives the change of the air pressure in the air cavity to drive the guide plug to move, thereby driving the adjustment piston to move through the connecting unit, and then controlling the size of the adjustment gap to control the lubricant flow from the temporary storage tank to the distribution plate.

[0015] Furthermore, the connecting unit includes:

[0016] connection box;

[0017] A guide rod slidably connected to the connection box, one end of the guide rod extends into the connection box and is connected to a slider, and the other end of the guide rod extends into the sliding cavity and is connected to a guide plug;

[0018] Conductive sheets respectively provided on the inner wall of the connection box and the side wall of the slider and electrically connected to each other;

[0019] A telescopic rod is arranged in the temporary storage tank, one end of the telescopic rod is connected to the temporary storage tank, and the other end of the telescopic rod is connected to the adjusting piston. Both ends of the telescopic rod are respectively provided with an electromagnet electrically connected to the conductive sheet, a magnet magnetically attracted to the electromagnet, and a reset spring arranged between the electromagnet and the magnet.

[0020] The guide plug drives the guide rod and the slider to move, thereby connecting or disconnecting the conductive sheets located on the inner wall of the connection box and the side wall of the slider, thereby energizing or de-energizing the electromagnet, and thereby moving the electromagnet and the magnetic block closer to or farther away from each other, thereby driving the telescopic rod to extend and retract, that is, driving the regulating piston to move, thereby controlling the size of the regulating gap and controlling the flow of lubricant from the temporary storage tank to the distribution plate.

[0021] Furthermore, the conductive sheet includes a first fixed sheet mounted on the inner wall of the connection box and a sliding sheet mounted on the side wall of the slider. The electromagnet is electrically connected to the first fixed sheet. When the temperature of the slideway of the slider is too high, the sliding sheet contacts the first fixed sheet, energizing the electromagnet to control the movement of the regulating piston, thereby increasing the flow of lubricant. The large amount of lubricant cools the slideway and reduces its temperature.

[0022] Furthermore, the conductive sheet also includes a second fixed sheet arranged on the inner wall of the connection box away from the first fixed sheet, the sliding sheets are two and are symmetrically arranged on the side walls of the slider, the inner wall of the temporary storage tank is provided with an interlayer, and the interlayer is provided with an electric heating wire that is electrically conductive with the second fixed sheet, so that when the temperature of the slide of the sliding part is too low, the sliding sheet contacts the second fixed sheet, and the electric heating wire is energized, so that the electric heating wire heats the lubricant and then passes it into the slide, thereby increasing the temperature of the slide and preventing the lubricant from agglomerating after entering the slide.

[0023] Furthermore, a slide is provided in the connection box, and a conductive strip electrically connected to the sliding piece is provided in the slide, and the conductive strip is electrically connected to an external power supply, so as to supply power to the electromagnet and the electric heating wire.

[0024] Furthermore, the detection unit further comprises a pressure spring located in the sliding cavity and sleeved on the guide rod, so as to slow down the moving distance of the guide plug and thereby reduce the volume change of the air cavity.

[0025] Furthermore, the temporary storage tank includes a tank body connected to the discharge pipe, a heating chamber connected to the bottom of the tank body, and a diversion chamber connected to the heating chamber. The distribution plate is connected to the bottom of the diversion chamber, and the interlayer is provided on the inner wall of the heating chamber. This allows for independent control of the lubricant flow rate and heating.

[0026] Based on the same inventive concept, the present invention discloses an automatic lubrication method for a die-casting mold sliding part, comprising adding lubricant to the die-casting mold sliding part using the above-mentioned automatic lubrication device.

[0027] Furthermore, the steps of adding lubricant to the die-casting mold sliding part using the above-mentioned automatic lubrication device are as follows:

[0028] Step S1: During the operation of the die-casting mold, the punch of the die-casting mold reciprocates and the piston rod moves to draw lubricant into a temporary storage tank;

[0029] Step S2: detecting the temperature range of the slideway sidewalls of each sliding member by the inspection unit, and adjusting the operation of the control unit to control the flow of lubricant from the temporary storage tank to the distribution plate;

[0030] In step S3, the lubricant flows through the distribution plate and the distribution branch pipe to the side walls of the slideways of the respective sliding components to lubricate the respective sliding components.

[0031] This method utilizes the excess kinetic energy of the punch during the operation of the die-casting mold to drive the piston rod to move, so as to achieve the purpose of automatically sucking lubricant, and uses the detection unit to detect the temperature range of the slide side wall of each sliding part in real time to control the operation of the adjustment unit to adjust the lubricant flow from the temporary tank to the distribution plate. It can not only automatically add lubricant to the sliding parts of the die-casting mold conveniently, but also adjust the amount of lubricant added according to different sliding parts and even the different positions of the sliding parts, so that the lubricant can lubricate the worn parts in time, effectively solving the problem of manual lubrication of the sliding parts of traditional die-casting molds, long maintenance time, high labor intensity and low work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0033] Figure 1 A schematic diagram of an automatic lubrication device for a die-casting mold slide proposed in an embodiment of the present application is shown;

[0034] Figure 2 A cross-sectional view of an automatic lubrication device for a die-casting mold slide, according to an embodiment of the present application, is shown;

[0035] Figure 3 A cross-sectional view of a detection unit in an automatic lubrication device for a die-casting mold slide, according to an embodiment of the present application, is shown;

[0036] Figure 4 A cross-sectional view of a temporary storage tank in an automatic lubrication device for a die-casting mold slide, as proposed in an embodiment of the present application, is shown. DETAILED DESCRIPTION

[0037] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the invention, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0038] The figure marks in the drawings of the specification include: detection ring 1, piston cylinder 2, piston rod 3, feed pipe 4, discharge pipe 5, tank body 6, distribution plate 7, distribution branch pipe 8, detection tube 9, connection box 10, guide rod 11, guide plug 12, pressure spring 13, slider 14, slide seat 15, sliding plate 16, reinforcement chamber 17, fixing ring 18, adjusting piston 19, sliding sleeve 20, fixing sleeve 21, electromagnet 22, magnetic block 23, reset spring 24, electric heating wire 25, fixing plate 26, support rod 27, and guide chamber 28.

[0039] An automatic lubrication device for die casting die sliding parts, for example Figure 1 As shown: it includes a suction component for sucking lubricant, a dispensing component for dispensing the sucked lubricant into the slideway of each sliding part, and a regulating component for regulating the flow rate and temperature of the dispensed lubricant.

[0040] like Figure 1 and Figure 2 As shown, the suction assembly includes a piston cylinder 2, a piston rod 3 arranged in the piston cylinder 2 and driven by the impulse of the die-casting mold, a feed pipe 4 and a discharge pipe 5 respectively arranged on both sides of the piston cylinder 2 and with a one-way valve, the end of the piston rod 3 extends into the piston cylinder 2 and is provided with a sealing piston that is slidingly sealed with the inner wall of the piston cylinder 2, and the feed pipe 4 is connected to the lubricant tank.

[0041] like Figure 1 and Figure 2 As shown, the dispensing assembly includes a number of temporary storage tanks respectively connected to the discharge pipe 5, distribution plates 7 respectively connected to the bottom of the temporary storage tanks and a number of distribution branches 8 connected to the distribution plates 7. The temporary storage tank includes a tank body 6 connected to the discharge pipe 5, a heating chamber connected to the bottom of the tank body 6 and a guide chamber 28 connected to the heating chamber. The distribution plate 7 is connected to the bottom of the guide chamber 28, and the end of the distribution branch 8 extends to the side wall of the slide of each sliding part of the die-casting mold.

[0042] like Figure 1 、 Figure 2 and Figure 3 and Figure 4 As shown, the regulating assembly includes a plurality of detection units respectively provided on the side walls of the slideways of the respective sliding members, a control unit provided in each temporary storage tank and controlling the flow of the lubricant, and a connection unit provided between the detection units and the control unit, as follows:

[0043] like Figure 1 、 Figure 2 and Figure 3As shown, the detection unit includes a detection ring 1 provided on the side wall of the slideway of each sliding member, an air cavity provided in the detection ring 1, a detection tube 9 provided on the side wall of the detection ring 1, a sliding cavity provided in the detection tube 9 and connected to the cylinder, a guide plug 12 in sliding sealing connection with the sliding cavity, and a pressure spring 13 provided in the sliding cavity to press the guide plug 12 tightly. Figure 4 As shown, the control unit includes a fixed ring 18 provided in the temporary storage tank and an adjusting piston 19 slidably connected in the temporary storage tank, and an adjusting gap is formed between the fixed ring 18 and the adjusting piston 19. Figure 3 and Figure 4 As shown, the connection unit includes a connection box 10, a guide rod 11 slidably connected to the connection box 10, a slider 14 slidably connected in the connection box 10 and connected to the end of the guide rod 11, conductive sheets respectively provided on the inner wall of the connection box 10 and the side wall of the slider 14 and electrically connected to each other, and a telescopic rod provided in the temporary storage tank. The other end of the guide rod 11 extends into the sliding cavity and is connected to the guide plug 12; the conductive sheet includes a first fixed sheet and a second fixed sheet respectively provided on the inner walls of both sides of the connection box 10 and a sliding sheet 16 respectively provided on both sides of the slider 14. A slide seat 15 is provided in the connection box 10, and a conductive strip electrically connected to the sliding sheet 16 is provided in the slide seat 15, and the conductive strip is electrically connected to an external power supply; the telescopic rod includes a fixed sleeve 21 connected to the temporary storage tank and a sliding sleeve 20 connected to the adjusting piston 19. The end of the sliding sleeve 20 is slidingly and sealingly connected to the fixed sleeve 21. The fixed sleeve 21 is installed in the temporary storage tank through a connecting plate and a plurality of support rods 27. The fixed sleeve 21 and the sliding sleeve 20 are respectively provided with an electromagnet 22 electrically connected to the conductive sheet and a magnet magnetically attracted to the electromagnet 22. A reset spring 24 located inside the telescopic rod is provided between the electromagnet 22 and the magnet. An interlayer is provided on the inner wall of the heating chamber, and an electric heating wire 25 electrically conductive with the second fixed sheet is provided in the interlayer.

[0044] When the slide temperature of the sliding part is greater than 250°C, the air pressure in the air cavity increases, pushing the guide plug 12, the guide rod 11 and the slider 14 to move to the right, the sliding plate 16 contacts the first fixed plate, and the electromagnet 22 is energized to control the movement of the regulating piston 19, thereby increasing the flow of the lubricant, and cooling the slide by a large amount of lubricant to reduce the temperature of the slide; when the slide of the sliding part is lower than 200°C, the air pressure in the air cavity decreases, the pressure spring 13 causes the guide plug 12, the guide rod 11 and the slider 14 to move to the left, the sliding plate 16 contacts the second fixed plate, and the electric heating wire 25 is energized, so that the electric heating wire 25 heats the lubricant and then passes it into the slide, thereby increasing the temperature of the slide and preventing the lubricant from agglomerating after entering the slide.

[0045] Based on the same inventive concept, this embodiment discloses an automatic lubrication method for a die-casting mold sliding member, comprising adding lubricant to the die-casting mold sliding member using the above-mentioned automatic lubrication device, and the steps are as follows:

[0046] Step S1: During the operation of the die-casting mold, the punch of the die-casting mold reciprocates and the piston rod 3 moves to draw lubricant into the temporary storage tank;

[0047] Step S2: Detecting the temperature range of the sidewall of the slideway of each sliding component through each air cavity and adjusting the operation of the control unit to control the flow rate and temperature of the lubricant from the temporary tank to the distribution plate 7, thereby controlling the flow rate and temperature of the lubricant injected into the slideway of each sliding component;

[0048] In step S3, the lubricant flows through the distribution plate 7 and the distribution branch pipe 8 to the side walls of the slideways of the respective sliding components to lubricate the respective sliding components.

[0049] This embodiment utilizes the excess kinetic energy of the punch during the operation of the die-casting mold to drive the piston rod 3 to move, so as to achieve the purpose of automatically sucking lubricant, and uses the detection unit to detect the temperature range of the slide side wall of each sliding part in real time, so as to control the operation of the adjustment unit to adjust the lubricant flow and temperature from the temporary tank to the distribution plate 7. It can not only conveniently and automatically add lubricant to the sliding parts of the die-casting mold, but also can adjust the lubricant addition amount and temperature according to different sliding parts and even different positions of the sliding parts, so that the lubricant can lubricate the worn parts in time, effectively solving the problem of manual lubrication of the sliding parts of traditional die-casting molds, long maintenance time, high labor intensity and low work efficiency.

[0050] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any indirect modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An automatic lubrication device for a die-casting die sliding member, characterized in that: include: The suction assembly includes a piston cylinder, a piston rod disposed in the piston cylinder and driven by the impulse of the die-casting mold, a feed pipe and a discharge pipe respectively disposed on both sides of the piston cylinder and provided with a one-way valve, wherein the feed pipe is connected to a lubricant tank; The dispensing assembly includes a plurality of temporary storage tanks respectively connected to the discharge pipes, a distribution plate respectively connected to the bottom of the temporary storage tanks, and a plurality of distribution branches connected to the distribution plates, the ends of the distribution branches extending to the side walls of the slideways of the sliding parts of the die-casting mold; The regulating assembly comprises a plurality of detection units respectively arranged on the side walls of the slideways of the sliding members, and a control unit arranged in each temporary storage tank and regulating and controlling the flow of the lubricant by the detection units.

2. The automatic lubrication device for a die-casting mold slide according to claim 1, characterized in that: The detection unit includes an air cavity provided on the side wall of the slideway of each sliding member, a sliding cavity communicated with the cylinder, and a guide plug in sliding and sealing connection with the sliding cavity; The control unit includes a fixed ring disposed in the temporary storage tank and an adjusting piston slidably connected in the temporary storage tank, and an adjusting gap is formed between the fixed ring and the adjusting piston; The adjustment assembly further includes a connecting unit provided between the guide plug and the adjustment piston.

3. The automatic lubrication device for a die-casting mold slide according to claim 2, characterized in that: The connecting unit includes: connection box; A guide rod slidably connected to the connection box, one end of the guide rod extends into the connection box and is connected to a slider, and the other end of the guide rod extends into the sliding cavity and is connected to a guide plug; Conductive sheets respectively provided on the inner wall of the connection box and the side wall of the slider and electrically connected to each other; A telescopic rod is arranged in the temporary storage tank, one end of the telescopic rod is connected to the temporary storage tank, and the other end of the telescopic rod is connected to the adjusting piston. Both ends of the telescopic rod are respectively provided with an electromagnet electrically connected to the conductive sheet, a magnet magnetically attracted to the electromagnet, and a reset spring arranged between the electromagnet and the magnet.

4. The automatic lubrication device for a die-casting mold slide according to claim 3, characterized in that: The conductive sheet includes a first fixed sheet arranged on the inner wall of the connection box and a sliding sheet arranged on the side wall of the slider, and the electromagnet is electrically connected to the first fixed sheet.

5. The automatic lubrication device for a die-casting mold slide according to claim 4, characterized in that: The conductive sheet also includes a second fixed sheet arranged on the inner wall of the connection box away from the first fixed sheet. The sliding sheets are two and symmetrically arranged on the two side walls of the slider. The inner wall of the temporary storage tank is provided with an interlayer, and the interlayer is provided with an electric heating wire that is electrically conductive with the second fixed sheet.

6. An automatic lubrication device for a die-casting mold slide according to any one of claim 5, characterized in that: A sliding seat is provided in the connection box. A conductive bar electrically connected to the sliding sheet is provided in the sliding seat. The conductive bar is electrically connected to an external power supply.

7. An automatic lubrication device for a die-casting mold slide according to any one of claims 3 to 6, characterized in that: The detection unit also includes a pressure spring located in the sliding cavity and sleeved on the guide rod.

8. An automatic lubrication device for a die-casting die slide according to claim 5 or 6, characterized in that: The temporary storage tank includes a tank body connected to the discharge pipe, a heating chamber connected to the bottom of the tank body, and a diversion chamber connected to the heating chamber. The distribution plate is connected to the bottom of the diversion chamber, and the interlayer is arranged on the inner wall of the heating chamber.

9. An automatic lubrication method for a die casting die slide, characterized in that: The method comprises adding lubricant to a sliding part of a die-casting mold using the automatic lubrication device according to any one of claims 1 to 8.

10. The automatic lubrication method for a die-casting mold slide according to claim 9, characterized in that: The steps of adding lubricant to the sliding parts of the die casting mold using the automatic lubrication device according to any one of claims 1 to 8 are as follows: Step S1: During the operation of the die-casting mold, the punch of the die-casting mold reciprocates and the piston rod moves to draw lubricant into a temporary storage tank; Step S2: detecting the temperature range of the slideway sidewalls of each sliding member by the inspection unit, and adjusting the operation of the control unit to control the flow of lubricant from the temporary storage tank to the distribution plate; In step S3, the lubricant flows through the distribution plate and the distribution branch pipe to the side walls of the slideways of the respective sliding components to lubricate the respective sliding components.

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