Injection molding die for producing a truncated sleeve of an air spring

Abstract

The application discloses an injection molding die for producing a section sleeve of an air spring, and relates to the technical field of molds.The die has the advantages that the shell can be easily ejected from the die and demolded, and the technical scheme is as follows: a forming plate, two sliding blocks and a male die plate form a forming cavity of the shell; a main runner is arranged on the fixed die plate, a secondary runner is arranged on the male die plate and communicates with the main runner, the secondary runner is used for guiding the molten material in the main runner to the forming cavity from the outer wall side of the male die plate, the ejection mechanism can eject the cold head formed in the main runner and the secondary runner and the shell formed in the forming cavity respectively; the ejection mechanism comprises an annular ejection plate sleeved on the outer wall of the male die plate and a plurality of ejector pins penetrating through the male die plate, the ejector pins are used for ejecting the cold head, and the ejection plate is used for ejecting the shell; the die further comprises a material collecting mechanism, the ejection mechanism drives the material collecting mechanism to start working when the ejection mechanism works, the cold head and the shell are respectively and separately ejected and guided out, and are collected respectively.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of molds, in particular to an injection molding mold for producing a section sleeve of an air spring. BACKGROUND

[0002] The air spring is a key component of the automobile suspension system. In a normal state, the air spring is inflated and has a certain gap between the piston section sleeve. Under the pressure of the vehicle body, the soft rubber air bag (bag skin) in the air spring is pressed down and collapses. The collapsed bag skin will be rolled down and outward, like a sleeve being rolled down, and finally wrapped around the outside of the piston with the section sleeve installed. The section sleeve is separated between the air bag and the metal piston, and plays a role in buffering and preventing wear.

[0003] Therefore, the section sleeve is a protective sleeve installed on the outside of the air spring piston and is made by injection molding process. Figure 11 As shown in the sectional sleeve shape, it is a straight cylinder, and a plurality of reinforcing ribs are distributed on the inner wall of the straight cylinder. The cylinder wall at one end of the straight cylinder expands outward to form an annular protrusion.

[0004] However, the deep cavity structure of the above-mentioned straight cylindrical shell and the reinforcing ribs on the inner side wall make the demolding resistance large. Therefore, how to facilitate the ejection of the shell from the mold is a technical problem to be solved.

[0005] Therefore, the applicant has developed a new technical solution in the actual production process to solve the above technical problems. SUMMARY

[0006] In view of the above technical deficiencies, the purpose of the present application is to provide an injection molding mold for producing a section sleeve of an air spring, which has the advantages of facilitating the ejection of the shell from the mold and facilitating the demolding of the shell.

[0007] To solve the above technical problems, the present application adopts the following technical solutions:

[0008] The present application provides an injection molding mold for producing a section sleeve of an air spring, which comprises a fixed mold fixed plate, a fixed mold plate, a movable mold plate, a movable mold fixed plate, and a ejection mechanism located between the movable mold plate and the movable mold fixed plate. The movable mold plate is provided with a convex mold plate on the side facing the fixed mold plate, and two sliding blocks are connected to the movable mold plate and located on both sides of the convex mold plate. The side of the two sliding blocks facing the convex mold plate is provided with an arc-shaped edge in the shape of a semicircle around the convex mold plate.

[0009] When the mold is opened, the fixed mold plate is provided with a driving member for driving the two sliders to move away from the male mold plate, and the driving member drives the two sliders to move towards the male mold plate when the mold is closed, so that the two semicircular arc edges enclose a complete circle around the periphery of the male mold plate, and the fixed mold plate is provided with a forming plate abutting against the inner wall of the complete circle and abutting against the top surface of the male mold plate, and the forming plate, the two sliders and the male mold plate form a forming cavity of the shell;

[0010] The fixed mold plate is provided with a main runner, and the male mold plate is provided with a secondary runner in communication with the main runner, and the secondary runner is used for guiding the molten material in the main runner to the forming cavity from the outer wall side of the male mold plate, so that the ejection mechanism ejects the cold head formed in the main runner and the secondary runner and the shell formed in the forming cavity, respectively.

[0011] The ejection mechanism comprises an annular ejection plate sleeved on the outer wall of the male mold plate and a plurality of ejector pins penetrating through the male mold plate, the ejector pins and the ejection plate move together, the ejector pins are used for ejecting the cold head, and the ejection plate is used for ejecting the shell.

[0012] Further comprising a material collecting mechanism, the ejection mechanism drives the material collecting mechanism to start working when the ejection mechanism works, and is used for separately ejecting and guiding the cold head and the shell and collecting them, respectively.

[0013] By adopting the above technical scheme, after the mold is closed, the material is injected into the forming cavity through the main runner and the secondary runner to form the shell, and then when the mold is opened, the driving member drives the two sliders to move away from the male mold plate, and then the ejection mechanism ejects the cold head, the cold head is preferentially ejected under the action of the ejector pins, the ejection plate is driven by the ejection mechanism to completely eject the shell from the male mold plate, so that the shell is discharged after the cold head, and the shell and the cold head are separated, without the need for subsequent separate cutting of the cold head from the shell, the ejection plate ejects the entire shell, improves the uniformity of the force when the shell is ejected from the male mold plate, facilitates the ejection of the shell from the mold, and facilitates the demolding of the shell; and the design of the material collecting mechanism facilitates the separate collection of the cold head and the shell according to the discharging sequence of the cold head and the shell.

[0014] Preferably, the main runner extends out of the forming plate, the secondary runner comprises a disc arranged on the top surface of the male mold plate and entering the forming plate, the disc is coaxially distributed with the male mold plate, the top surface of the disc is provided with a plurality of distribution channels along the radial direction of the disc, each distribution channel intersects at the center of the disc and communicates with the main runner, the top surface of the male mold plate is provided with a distribution branch corresponding to each distribution channel, one end of each distribution branch away from the disc does not extend out of the edge of the male mold plate, and the inner bottom wall of each distribution branch is provided with a pouring channel obliquely extending out of the side surface of the male mold plate, the pouring channel obliquely extends from the distribution branch to the side wall of the male mold plate, and the pouring channel is a tapered channel, and a flat channel in communication with the tapered channel is arranged on the side close to the side wall of the male mold plate.

[0015] Preferably, the ejection mechanism further comprises a pin fixing plate and a push plate between the movable die plate and the movable die fixing plate, the push plate is distributed close to the movable die fixing plate, the push plate is used for fixing the ejector pin and moving one end of the ejector pin out of the convex die plate, a plurality of jacks are arranged on the push plate, one end of each jack extends to the ejection plate and is detachably connected with the ejection plate, a plurality of placing holes for the movement of the ejector pins are arranged on the convex die plate, and the placing holes are in communication with each of the branch channels and the main channel in the center of the disc.

[0016] Preferably, the material collecting mechanism comprises a driving rod arranged on the lower end surface of the push plate and a mounting plate arranged on the lower end surface of the movable die plate, and an arc-shaped plate is rotatably arranged on the mounting plate.

[0017] Further comprising a material collecting box, an accommodating box for accommodating the cold sprue is arranged on the upper end of the material collecting box, and an accommodating part for accommodating the shell is arranged in the material collecting box, and one end of the material collecting box extends out of the accommodating box and is close to one side of the mold.

[0018] The driving rod changes the inclination angle of the arc-shaped plate with the movement of the push plate relative to the movable die plate, so as to guide the cold sprue and the shell to the accommodating box and the accommodating part respectively.

[0019] Preferably, the adjusting part comprises a worm and a worm wheel which are rotatably connected to the mounting plate, when the arc-shaped plate is in a horizontal position, the axis of the worm is parallel to the length direction of the arc-shaped plate, the axis of the worm wheel is perpendicular to the axis of the worm, the lower end of the arc-shaped plate is provided with two fixing plates, and the worm wheel drives the two fixing plates to rotate together when the worm wheel rotates; a gear is coaxially fixed on one end of the worm which extends out of the first plate, a rack is arranged on the driving rod and engaged with the gear, and the rack is distributed along the length direction of the driving rod.

[0020] Preferably, the accommodating part comprises two obliquely distributed guide rails arranged in the material collecting box, the two guide rails are used for supporting the annular protrusion by inserting the straight cylinder of the shell, and adjusting parts are arranged on the arc-shaped plate and the accommodating box so that the shell is located on the guide rails.

[0021] The two ends of the guide rails are respectively fixed on the opposite inner walls of the material collecting box, and the shell guided out of the arc-shaped plate enters the guide rails to be orderly stored.

[0022] Alternatively, the outer wall of the material collecting box is provided with storage tracks in communication with the two guide rails.

[0023] Preferably, the adjusting part comprises an arc-shaped baffle arranged on the side wall of the accommodating box and a notch arranged at the discharging position of the arc-shaped plate, when one end of the arc-shaped plate rotates into the material collecting box, the notch corresponds to the guide rail, one end of the arc-shaped plate with the notch is located on one side of the baffle and there is a gap A between the arc-shaped plate and the baffle.

[0024] When the shell slides along the arc-shaped plate and the straight cylinder faces the outlet direction of the arc-shaped plate, the gap allows the straight cylinder of the shell to drop out of the arc-shaped plate, and the annular protrusion is still located on the arc-shaped plate, and the gap A allows the annular protrusion at this time to slide out of the arc-shaped plate and move into the guide rail;

[0025] When the shell slides along the arc-shaped plate and the annular protrusion faces the outlet direction of the arc-shaped plate, the baffle is used to abut against the annular protrusion on the shell, so that the straight cylinder is tilted to drop out in the direction of the gap, and then the annular protrusion moves out of the arc-shaped plate and enters the guide rail.

[0026] Preferably, the side of the baffle away from the receiving box is provided with a rubber pad.

[0027] Preferably, the driving member comprises obliquely distributed guide rods arranged on the fixed die plate, and each of the sliding blocks is provided with a insertion hole for the insertion of the guide rods, and each of the sliding blocks is matched with two guide rods, and the movable die plate is provided with a through hole for the guide rods to pass through.

[0028] Preferably, the protruding die plate is provided with an annular connecting plate on the outer wall of one end connected with the movable die plate, and the connecting plate is fixed on the movable die plate through locking screws, and the locking screws are screwed into the movable die plate from the side of the movable die plate away from the fixed die plate and are threadedly connected with the connecting plate.

[0029] The beneficial effects of the present application are as follows: after clamping, the material is injected into the forming cavity through the main runner and the secondary runner to form the shell, and then when the mold is opened, the driving member drives the two sliding blocks to move away from the protruding die plate, and then the ejection mechanism ejects the cold sprue, the cold sprue is preferentially ejected under the action of the ejector pin, the shell is completely ejected from the protruding die plate by the ejection plate driven by the ejection mechanism, so that the shell is ejected after the cold sprue, and the shell and the cold sprue are separated, without the need for subsequent separate cutting of the cold sprue from the shell, the ejection plate ejects the entire shell, improves the uniformity of the force when the shell is ejected from the protruding die plate, facilitates the ejection of the shell from the mold, and facilitates the demolding of the shell; and the design of the material collecting mechanism facilitates the subsequent separate collection of the cold sprue and the shell according to the ejection sequence of the cold sprue and the shell. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0031] Figure 1 The structure of the present embodiment is shown in the schematic diagram;

[0032] Figure 2Structure diagram for embodying the top pillar of the present embodiment;

[0033] Figure 3 Structure diagram for embodying the forming cavity of the present embodiment;

[0034] Figure 4 Structure diagram for embodying the punch plate of the present embodiment;

[0035] Figure 5 Structure diagram for embodying the guide rod of the present embodiment;

[0036] Figure 6 Structure diagram for embodying the material collecting mechanism of the present embodiment;

[0037] Figure 7 Structure diagram for embodying the gear of the present embodiment;

[0038] Figure 8 Structure diagram for embodying the material collecting box of the present embodiment;

[0039] Figure 9 Structure diagram for embodying the baffle of the present embodiment;

[0040] Figure 10 Structure diagram for embodying the contact between the annular protrusion and the baffle of the present embodiment;

[0041] Figure 11 Structure diagram for embodying the housing.

[0042] Explanation of reference numerals:

[0043] In the figure: 1, fixed plate of the stationary mold; 11, plate of the stationary mold; 111, forming plate; 112, main runner; 12, plate of the movable mold; 121, fixed plate of the movable mold; 122, punch plate; 1221, disc; 1222, sub-runner; 1223, sub-runner branch; 1224, pouring channel; 1225, flat runner; 1226, placement hole; 1227, arched protrusion; 1228, connecting plate; 1229, locking screw; 123, sliding block; 13, forming cavity; 131, forming groove; 14, ejection plate; 141, ejector pin; 15, ejector pin fixed plate; 151, push plate; 152, support plate; 153, top pillar; 16, guide rod; 17, driving rod; 171, mounting plate; 172, arc plate; 1721, notch; 173, worm; 174, worm wheel; 175, first plate; 176, second plate; 177, rotating shaft; 178, fixed plate; 179, gear; 1791, rack; 18, material collecting box; 181, receiving box; 182, guide rail; 183, baffle; 2, housing; 21, annular protrusion. DETAILED DESCRIPTION

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] An injection molding die for producing a profile sleeve for an air spring, such as Figures 1-6 It includes a fixed mold fixing plate 1, a fixed template 11, a moving template 12, a moving mold fixing plate 121, and an ejection mechanism located between the moving template 12 and the moving mold fixing plate 121. The moving template 12 is provided with a protruding template 122 on the side facing the fixed template 11, and two sliders 123 that are slidably connected to the moving template 12 and located on both sides of the protruding template 122. The two sliders 123 are each provided with a semi-circular arc edge surrounding the protruding template 122 on the side facing the protruding template 122.

[0046] like Figures 1-6 When the mold is opened, the fixed template 11 is provided with a driving component that drives the two sliders 123 to move away from the convex template 122. When the mold is closed, the driving component drives the two sliders 123 to move towards the convex template 122, so that the two semi-circular arc edges are surrounded to form a complete circle around the convex template 122. The fixed template 11 is provided with a forming plate 111 that fits against the inner wall of the complete circle and abuts against the top surface of the convex template 122. The top surface of the convex template 122 is the side of the convex template 122 that is away from the moving template 12. The forming plate 111, the two sliders 123, and the convex template 122 form the forming cavity 13 of the shell 2. The outer wall of the convex template 122 is provided with a forming groove 131 for forming the reinforcing ribs of the straight inner wall.

[0047] The fixed template 11 is provided with a main flow channel 112, and the convex template 122 is provided with a secondary flow channel communicating with the main flow channel 112. The secondary flow channel is used to guide the molten material in the main flow channel 112 from the outer wall side of the convex template 122 to the forming cavity 13, so that the ejection mechanism ejects the cold material head formed in the main flow channel 112 and the secondary flow channel from the shell 2 formed in the forming cavity 13 respectively.

[0048] The ejection mechanism includes an annular ejection plate 14 fitted on the outer wall of the convex template 122 and a plurality of ejector pins 141 passing through the convex template 122. The ejector pins 141 and the ejection plate 14 move together, and the ejector pins 141 are used to eject the cold material head. The ejection plate 14 is used to eject the housing 2. The ejection plate 14 is embedded in the moving template 12. After each slider 123 moves away from the convex template 122, the ejection plate 14 moves out of the moving template 12.

[0049] The material collecting mechanism is driven to work by the ejection mechanism when the ejection mechanism works, and is used for separately spacing, ejecting and guiding out the cold sprue and the shell 2, and collecting them respectively.

[0050] As Figures 1-6 After the mold is closed, the material is injected into the forming cavity 13 through the main runner 112 and the secondary runner to form the shell 2, and then when the mold is opened, the driving member drives the two sliders 123 to move away from the punch plate 122, and then the ejection mechanism ejects the cold sprue, the cold sprue is preferentially ejected under the action of the ejector pin 141, the shell 2 is completely ejected from the punch plate 122 by the ejection plate 14 driven by the ejection mechanism, so that the shell 2 is ejected later than the cold sprue, and the shell 2 and the cold sprue are separated and ejected, without the need for subsequent separate cutting of the cold sprue from the shell 2, the ejection plate 14 ejects the entire shell 2, improves the uniformity of the force when the shell 2 is ejected from the punch plate 122, facilitates the ejection of the shell 2 from the mold, and facilitates the demolding of the shell 2; and the design of the material collecting mechanism facilitates the subsequent separate collection of the cold sprue and the shell 2 according to the ejection sequence of the cold sprue and the shell 2.

[0051] The shell 2 has a certain hardness, if measured by Shore hardness, the hardness of this kind of cross-section sleeve is usually Shore A 85-95, or even reaches Shore D 50-60 (much harder than tire rubber). This hardness range ensures that it is extremely wear-resistant and not easy to be cut or torn.

[0052] As Figures 1-5The main flow channel 112 extends out of the forming plate 111, the secondary flow channel comprises a disc 1221 arranged on the top surface of the male die plate 122 and entering the forming plate 111, the disc 1221 is coaxially arranged with the male die plate 122, and a plurality of branch flow channels 1222 are arranged on the top surface of the disc 1221 and distributed along the radial direction of the disc 1221, the branch flow channels 1222 are six and uniformly distributed on the top surface of the disc 1221, the top surface of the disc 1221 is the side of the disc 1221 away from the male die plate 122, each branch flow channel 1222 intersects at the center of the disc 1221 and communicates with the main flow channel 112, the top surface of the male die plate 122 is provided with branch flow branch channels 1223 corresponding to each branch flow channel 1222, one end of each branch flow channel 1222 extends along the side wall of the disc 1221 and communicates with the corresponding branch flow branch channel 1223, and each branch flow branch channel 1223 does not extend out of the edge of the male die plate 122 at the end away from the disc 1221, and an inclined pouring channel 1224 extending out of the side of the male die plate 122 is arranged on the inner bottom wall of each branch flow branch channel 1223, the pouring channel 1224 is arranged on the side of the branch flow branch channel 1223 away from the disc 1221, the pouring channel 1224 extends obliquely from the branch flow branch channel 1223 to the side wall of the male die plate 122, and the pouring channel 1224 is a tapered flow channel, the taper gradually decreases away from the branch flow branch channel 1223, and a flat flow channel 1225 in communication with the tapered flow channel is arranged on the side close to the side wall of the male die plate 122.

[0053] As Figures 1-5 At this time, the molten material flows out of the main flow channel 112, flows into the branch flow branch channels 1223 from each branch flow channel 1222, and then flows to the pouring channel 1224 and flows out of the flat flow channel 1225, at this time, the molten material flows out of the side wall of the male die plate 122, thereby facilitating the filling of the forming cavity 13, and in addition, most of the cold sprues are formed on the top surface of the male die plate 122 and in the pouring channel 1224, thereby facilitating the separation of the subsequent cold sprues and the shell 2.

[0054] As Figures 1-5The ejection mechanism further comprises a pin fixing plate 15 and a push plate 151 located between the movable die plate 12 and the movable die fixing plate 121, and two oppositely distributed support plates 152 provided on the movable die fixing plate 121, the pin fixing plate 15 and the push plate 151 are both located between the two support plates 152, the pin fixing plate 15 is fixed on the push plate 151 by screws, the push plate 151 is distributed close to the movable die fixing plate 121, the movable die fixing plate 121 is provided with a hole through which the piston rod of the air cylinder passes, so as to facilitate the connection of the piston rod of the air cylinder with the push plate 151, driving the push plate 151 and the pin fixing plate 15 to move together towards the movable die plate 12; the push plate 151 is used for fixing the pins 141 and driving one end of the pins 141 to move out of the male die plate 122, the push plate 151 is provided with a plurality of jacks 153, one end of each jack 153 extends to the ejection plate 14 and is detachably connected with the ejection plate 14, the male die plate 122 is provided with a placing hole 1226 for the movement of each pin 141, the placing hole 1226 is in communication with each shunt branch 1223 and the main flow channel 112 at the center of the disc 1221, and when the mold is closed, each pin 141 is located in each placing hole 1226, blocking the material in the shunt branch 1223 from continuing to flow along the placing hole 1226; the shunt branch 1223 is provided with an arched protrusion 1227 located between the placing hole 1226 and the pouring channel 1224, the arched structure helps to guide the molten material to flow smoothly from the shunt branch 1223 into the pouring channel 1224, reduces material retention or backflow, and ensures uniform filling; in addition, the arched structure has certain mechanical support property, which can enhance the structural strength of the bottom of the shunt branch 1223 and prevent deformation or damage during high-pressure injection molding; and facilitates the subsequent demolding of the cold sprue.

[0055] As Figures 1-5 The driving member comprises obliquely distributed guide rods 16 provided on the fixed die plate 11, each sliding block 123 is provided with an insertion hole into which the guide rod 16 is inserted, each sliding block 123 is matched with two guide rods 16, each guide rod 16 is gradually inclined and extended away from the male die plate 122 from the fixed die plate 11, and the movable die plate 12 and the support plate 152 are both provided with a through hole through which the guide rod 16 passes. At this time, during the opening and closing of the mold, the guide rods 16 drive the two sliding blocks 123 to reciprocally slide.

[0056] As Figures 1-5Since the outer wall of the male die plate 122 has the forming groove 131, the male die plate 122 needs to be disassembled when it needs to be replaced after multiple uses. At this time, the male die plate 122 is provided with an annular connecting plate 1228 on the outer wall of the end connected with the movable die plate 12. The connecting plate 1228 is fixed on the movable die plate 12 through locking screws 1229. At this time, the locking screws 1229 are screwed into the movable die plate 12 from the side of the movable die plate 12 away from the fixed die plate 11 and are in threaded connection with the connecting plate 1228, which facilitates the installation of the male die plate 122. The lower end of the ejection plate 14 is in abutment with the connecting plate 1228, and each ejector pin 153 passes through the connecting plate 1228.

[0057] As Figures 6-11 The material collecting mechanism includes a driving rod 17 arranged on the lower end surface of the push plate 151 and a mounting plate 171 arranged on the lower end surface of the movable die plate 12. The driving rod 17 and the mounting plate 171 are respectively detachably connected with the push plate 151 and the movable die plate 12. The driving rod 17 is L-shaped, with the vertical end connected with the lower end surface of the push plate 151 and the horizontal end extending to one side of the mounting plate 171. In order to increase the strength of the driving rod 17, the horizontal end of the driving rod 17 can be fixedly connected with the side wall of the mounting plate 171. An arc-shaped plate 172 is rotatably arranged on the mounting plate 171. The material collecting mechanism also includes a material collecting box 18. The upper end of the material collecting box 18 is provided with a box opening facing upward and accommodating the cold material head. The material collecting box 18 is provided with an accommodating part accommodating the shell 2. The box opening of the material collecting box 18 also faces upward and one end of the material collecting box 18 extends out of the accommodating box 181 close to the side of the mold, so as to facilitate the shell 2 to enter the material collecting box 18.

[0058] The driving rod 17 changes the inclination angle of the arc-shaped plate 172 with the movement of the push plate 151 relative to the movable die plate 12 through the adjusting part, so as to guide the cold material head and the shell 2 to the accommodating box 181 and the accommodating part respectively.

[0059] As Figures 6-11The adjusting member comprises a worm 173 and a worm wheel 174 which are rotationally connected to the mounting plate 171, specifically, two first plates 175 are arranged on the mounting plate 171 in opposite distribution, the two ends of the worm 173 are rotationally connected to the two first plates 175 respectively, two second plates 176 are arranged on the mounting plate 171 in opposite distribution, a rotating shaft 177 is rotationally connected between the two second plates 176, the worm wheel 174 is coaxially fixed on the rotating shaft 177, the axis of the rotating shaft 177 is perpendicular to the axis of the worm 173 and the rotating shaft 177 is located above the worm 173, when the arc-shaped plate 172 is located at the horizontal position, which is also the mold closing state, the axis of the worm 173 is parallel to the length direction of the arc-shaped plate 172, the axis of the worm wheel 174 is perpendicular to the axis of the worm 173, the lower end of the arc-shaped plate 172 is provided with two fixed plates 178, at this time, the two ends of the rotating shaft 177 extend out of the second plates 176 and are fixed with the corresponding fixed plates 178 respectively, so that when the worm 173 is engaged with the worm wheel 174, the rotating shaft 177 is driven to rotate, and then the two fixed plates 178 are driven to rotate, so as to achieve the purpose that the arc-shaped plate 172 is driven to rotate when the worm wheel 174 rotates; the worm 173 is coaxially fixed with a gear 179 at one end extending out of the first plate 175, at this time, the gear 179 is located on the side away from the two first plates 175, the driving rod 17 is provided with a rack 1791 engaged with the gear 179, and the rack 1791 is distributed along the length direction of the horizontal end of the driving rod 17.

[0060] As Figures 6-11 , the receiving member comprises two inclined guide rails 182 arranged in the receiving box 18, one end of the guide rail 182 is fixedly connected with the side wall of the receiving box 18 extending out of the receiving box 181, and gradually starts to extend downwardly and downwardly, the two guide rails 182 support the annular protrusion 21 for the straight cylinder insertion of the shell 2, at this time, the shell 2 is in the correct state on the guide rail 182, the arc-shaped plate 172 and the receiving box 181 are provided with adjusting members for enabling the shell 2 to be in the correct state on the guide rail 182.

[0061] As Figures 6-11 , the two ends of the guide rail 182 are fixed on the opposite inner walls of the receiving box 18 respectively, the shell 2 led out of the arc-shaped plate 172 enters the guide rail 182 for orderly storage, at this time, the orderly storage means that each shell 2 is arranged in the correct state between the two guide rails 182, which is convenient for subsequent taking, at this time, in order to take, a door plate can be arranged on one side wall of the receiving box 18, opening the door plate can make the shell 2 on the guide rail 182 slide out of the receiving box 18, which is a use state and is not commonly used;

[0062] Normal state: Alternatively, the outer wall of the receiving box 18 is provided with a storage track (not shown in the figure) communicated with the two guide rails 182. At this time, the receiving box 18 is provided with an outlet on the side lower than the two guide rails 182, so that the shell 2 sliding down from the two guide rails 182 enters the storage track for storage. The storage track can be provided with multiple tracks in parallel, and the bottom is connected by a bottom plate. The bottom plate is provided with a roller with a brake at the bottom, which is convenient for changing the storage track connected with the two guide rails 182.

[0063] As Figures 6-11 , the adjusting member includes an arc-shaped baffle 183 arranged on the side wall of the receiving box 181 and a gap 1721 arranged at the outlet of the arc-shaped plate 172. The width of the baffle 183 gradually increases from the position close to the upper end of the receiving box 181. The purpose is to block the annular protrusion 21. When one end of the arc-shaped plate 172 rotates into the receiving box 18, the gap 1721 corresponds to the guide rail 182, and there is a gap between the lower end of the arc-shaped plate 172 and the guide rail 182. One end of the arc-shaped plate 172 with the gap 1721 is located on one side of the baffle 183 and there is a gap A between the baffle 183.

[0064] As Figures 6-11 , when the shell 2 slides along the arc-shaped plate 172, due to the design of the arc-shaped plate 172 and the straight cylinder shape of the shell 2 with the annular protrusion 21 at one end, the shell 2 will gradually make the straight cylinder length direction parallel to the arc-shaped plate 172 length direction during the rolling process along the arc-shaped plate 172, and then the shell 2 will be in two states after sliding out of the arc-shaped plate 172.

[0065] The first state: When the straight cylinder is directed to the outlet direction of the arc-shaped plate 172, the gap 1721 is used for the straight cylinder of the shell 2 to drop out of the arc-shaped plate 172, and the annular protrusion 21 is still located on the arc-shaped plate 172. The gap A is used for the annular protrusion 21 to slide out of the arc-shaped plate 172 and move into the guide rail 182 at this time.

[0066] As Figure 10 , the second state: When the shell 2 slides along the arc-shaped plate 172, and the annular protrusion 21 is directed to the outlet direction of the arc-shaped plate 172, the baffle 183 is used to abut against the annular protrusion 21 on the shell 2, so that the straight cylinder is inclined to the gap 1721 direction and then the annular protrusion 21 moves out of the arc-shaped plate 172 and enters the guide rail 182.

[0067] As Figures 6-11 , the direction adjustment of the shell 2 is completed, and then the shell 2 entering the guide rail 182 is directed upward with the annular protrusion 21, which is convenient for the orderly collection of the shell 2. The side of the baffle 183 away from the receiving box 181 is provided with a rubber pad, which is used to reduce the collision between the shell 2 and the baffle 183.

[0068] The receiving process:

[0069] The first step: when the mold is closed, the arc plate 172 is in a horizontal state, after the mold is opened, the movable mold plate 12 drives the mounting plate 171 to move away from the fixed mold plate 11, at this time, the push plate 151 also moves together, thereby driving one end of the arc plate 172 to be above the receiving box 181 and the material collecting box 18, and in this process, the guide rod 16 drives the two sliding blocks 123 to move away from the convex mold plate 122, facilitating the subsequent ejection of the shell 2;

[0070] The second step: after the mold is opened, the push plate 151 pushes the ejector pin 141 and the ejector rod 153 to move together in the direction of the convex mold plate 122, the cold head is separated from the shell 2 under the pushing force of each ejector pin 141, and is then preferentially ejected, in this process, the movement of the push plate 151 drives one end of the arc plate 172 to rotate in the direction of the receiving box 181, so that the dropped cold head is received by the arc plate 172 and falls into the receiving box 181 along the inclined arc plate 172; at this time, the ejector rod 153 also ejects one end of the shell 2 from the convex mold plate 122 by a small amount;

[0071] The third step: as the push plate 151 continues to move, the ejector rod 153 continues to eject the shell 2 from the convex mold plate 122, and the arc plate 172 continues to rotate, thereby rotating away from the receiving box 181 to the material collecting box 18, in this process, one end of the arc plate 172 is not in contact with the box opening of the receiving box 181, facilitating the rotation of one end of the arc plate 172 above the material collecting box 18, when the push plate 151 moves to the position, so that the ejector rod 153 completely ejects the shell 2 from the convex mold plate 122, one end of the arc plate 172 rotates to above the two guide rails 182, and then the shell 2 falls on the arc plate 172 and moves to the guide rail 182 along the inclined arc plate 172 for orderly collection.

[0072] As Figure 8 And Figure 9 And Figure 10 At this time, in order to better make one end of the arc plate 172 close to the guide rail 182, the mouth wall of the side box opening of the receiving box 181 extending out of the material collecting box 18 is consistent with the inclined direction of the guide rail 182, and the upper end surface of the guide rail 182 is flush with the inclined box opening of the material collecting box 18, there is a gap between the receiving box 181 and the guide rail 182, facilitating the movement of the shell 2 along the guide rail 182.

[0073] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these modifications and variations.

Claims

1. An injection molding die for producing a profile sleeve of an air spring, comprising a fixed mold plate (1), a fixed template (11), a movable template (12), a movable mold plate (121), and an ejection mechanism located between the movable template (12) and the movable mold plate (121), characterized in that, The moving template (12) has a protruding template (122) on the side facing the fixed template (11) and two sliders (123) that are slidably connected to the moving template (12) and located on both sides of the protruding template (122). The two sliders (123) have a semi-circular arc edge surrounding the protruding template (122) on the side facing the protruding template (122). When the mold is opened, the fixed template (11) is provided with a driving component that drives the two sliders (123) to move away from the convex template (122). When the mold is closed, the driving component drives the two sliders (123) to move towards the convex template (122), so that the two semi-circular arc edges are enclosed to form a complete circle around the convex template (122). The fixed template (11) is provided with a forming plate (111) that fits against the inner wall of the complete circle and abuts against the top surface of the convex template (122). The forming plate (111), the two sliders (123), and the convex template (122) form the forming cavity (13) of the shell (2). The fixed template (11) is provided with a main channel (112), and the convex template (122) is provided with a secondary channel communicating with the main channel (112). The secondary channel is used to guide the molten material in the main channel (112) from the outer wall side of the convex template (122) to the forming cavity (13), so that the ejection mechanism ejects the cold material head formed in the main channel (112) and the secondary channel from the shell (2) formed in the forming cavity (13) respectively. The ejection mechanism includes an annular ejection plate (14) fitted on the outer wall of the convex template (122) and a plurality of ejector pins (141) passing through the convex template (122). The ejector pins (141) and the ejection plate (14) move together, and the ejector pins (141) are used to eject the cold material head, and the ejection plate (14) is used to eject the shell (2). It also includes a receiving mechanism, which is driven to start working when the ejection mechanism is working, and is used to eject and export the cold material head and the shell (2) at intervals, and collect them separately.

2. The injection molding die for producing the profile sleeve of an air spring as described in claim 1, characterized in that, The main flow channel (112) extends into a forming plate (111). The secondary flow channel includes a disc (1221) disposed on the top surface of the convex template (122) and entering the forming plate (111). The disc (1221) is coaxially distributed with the convex template (122), and a plurality of branch channels (1222) radially distributed along the top surface of the disc (1221) are formed. Each branch channel (1222) intersects at the center of the disc (1221) and communicates with the main flow channel (112). The top surface of the convex template (122) is provided with a branch channel (1222) corresponding to each branch channel (1222). The distribution of branch channels (1223) shall be provided. Each branch channel (1223) shall not extend beyond the edge of the convex template (122) at the end away from the disc (1221). Each branch channel (1223) shall have a pouring channel (1224) extending obliquely from the side of the convex template (122) on its inner bottom wall. The pouring channel (1224) extends obliquely from the branch channel (1223) toward the side wall of the convex template (122). The pouring channel (1224) shall be a conical flow channel. A flat flow channel (1225) communicating with the conical flow channel shall be provided on the side near the side wall of the convex template (122).

3. The injection molding die for producing the profile sleeve of an air spring as described in claim 2, characterized in that, The ejection mechanism also includes an ejector pin fixing plate (15) and a push plate (151) located between the moving template (12) and the moving template fixing plate (121). The push plate (151) is distributed close to the moving template fixing plate (121). The push plate (151) is used to fix the ejector pin (141) and drive one end of the ejector pin (141) to move out of the protruding template (122). The push plate (151) is provided with a number of ejector pins (153). One end of each ejector pin (153) extends to the ejection plate (14) and is detachably connected to the ejection plate (14). The protruding template (122) is provided with a placement hole (1226) for each ejector pin (141) to move. The placement hole (1226) is connected to each branch channel (1223) and the main channel (112) in the center of the disc (1221).

4. The injection molding die for producing the profile sleeve of an air spring as described in claim 3, characterized in that, The receiving mechanism includes a drive rod (17) disposed on the lower end face of the push plate (151) and a mounting plate (171) disposed on the lower end face of the moving template (12), and an arc plate (172) is rotatably provided on the mounting plate (171). It also includes a receiving box (18), the upper end of which is provided with a receiving box (181) for receiving cold material heads, the receiving box (18) is provided with a receiving component for receiving the housing (2), and one end of the receiving box (18) extends out of the receiving box (181) to the side near the mold. The drive rod (17) changes the tilt angle of the arc plate (172) by adjusting the push plate (151) relative to the moving template (12), and is used to guide the cold material head and the housing (2) to the receiving box (181) and the receiving component, respectively.

5. The injection molding die for producing the profile sleeve of an air spring as described in claim 4, characterized in that, The adjusting component includes a worm (173) and a worm wheel (174) rotatably connected to the mounting plate (171). When the arc plate (172) is in a horizontal position, the axis of the worm (173) is parallel to the length direction of the arc plate (172), and the axis of the worm wheel (174) is perpendicular to the axis of the worm (173). The lower end of the arc plate (172) is provided with two fixed plates (178). When the worm wheel (174) rotates, it drives the two fixed plates (178) to rotate together. The worm (173) is coaxially fixed with a gear (179) at one end extending out of the first plate (175). The drive rod (17) is provided with a rack (1791) that meshes with the gear (179). The rack (1791) is distributed along the length direction of the drive rod (17).

6. The injection molding die for producing the profile sleeve of an air spring as described in claim 4, characterized in that, The receiving component includes two inclined guide rails (182) disposed in the receiving box (18). The two guide rails (182) support the annular protrusion (21) for the straight cylinder of the housing (2) to be inserted. The arc plate (172) and the receiving box (181) are provided with adjustment components that allow the housing (2) to be positioned on the guide rails (182). The two ends of the guide rail (182) are respectively fixed on the opposite inner walls of the receiving box (18), and the shell (2) that is pushed out from the arc plate (172) enters the guide rail (182) for orderly storage. Alternatively, the outer wall of the receiving box (18) is provided with a storage track that communicates with two guide rails (182).

7. The injection molding die for producing the profile sleeve of an air spring as described in claim 6, characterized in that, The adjusting component includes an arc-shaped baffle (183) provided on the side wall of the receiving box (181) and a notch (1721) opened at the discharge point of the arc-shaped plate (172). When one end of the arc-shaped plate (172) is rotated into the receiving box (18), the notch (1721) corresponds to the guide rail (182). The end of the arc-shaped plate (172) with the notch (1721) is located on one side of the baffle (183) and there is a gap A between it and the baffle (183). When the housing (2) slides along the arc plate (172) and the straight cylinder faces the outlet direction of the arc plate (172), the notch (1721) allows the straight cylinder of the housing (2) to fall out of the arc plate (172), while the annular protrusion (21) remains on the arc plate (172), and the gap A allows the annular protrusion (21) to slide out of the arc plate (172) and move into the guide rail (182); When the housing (2) slides along the arc plate (172) and the annular protrusion (21) faces the outlet direction of the arc plate (172), the baffle (183) is used to abut against the annular protrusion (21) on the housing (2), causing the straight cylinder to tilt and fall out in the direction of the notch (1721). Then the annular protrusion (21) moves out of the arc plate (172) from the gap A and enters the guide rail (182).

8. The injection molding die for producing the profile sleeve of an air spring as described in claim 7, characterized in that, The baffle (183) is provided with a rubber pad on the side opposite to the receiving box (181).

9. The injection molding die for producing the profile sleeve of an air spring as described in claim 1, characterized in that, The driving component includes obliquely distributed guide rods (16) on the fixed template (11), each slider (123) has an insertion hole for inserting the guide rods (16), each slider (123) has two guide rods (16), and the moving template (12) has an exit hole for the guide rods (16) to pass through.

10. The injection molding die for producing the profile sleeve of an air spring as described in claim 3, characterized in that, The convex template (122) has an annular connecting plate (1228) on the outer wall of the end connected to the moving template (12). The connecting plate (1228) is fixed to the moving template (12) by a locking screw (1229). The locking screw (1229) is screwed into the moving template (12) from the side of the moving template (12) away from the fixed template (11) and is threadedly connected to the connecting plate (1228).

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