Injection molding mold for producing section-shaped sleeve of air spring

Abstract

The invention discloses an injection molding mold for producing a section-shaped sleeve of an air spring, and relates to the technical field of molds, the injection molding mold has the advantages that a shell can be conveniently ejected out of the mold, and demolding of the shell is facilitated, and the key points of the technical scheme are as follows: a molding cavity of the shell is formed by a molding plate, two sliding blocks and a convex mold plate; the fixed mold plate is provided with a main runner, the convex mold plate is provided with a secondary runner communicated with the main runner, and the secondary runner is used for guiding a molten material in the main runner to the forming cavity from the side surface of the outer wall of the convex mold plate, so that the ejection mechanism respectively ejects a cold material head formed in the main runner and the secondary runner and a shell formed in the forming cavity; the ejection mechanism comprises an annular ejection plate arranged on the outer wall of the male die plate in a sleeving mode and a plurality of ejector pins penetrating through the male die plate, the ejector pins are used for ejecting the cold material heads, and the ejection plate is used for ejecting the shell. And when the ejection mechanism works, the material collecting mechanism is driven to start to work, and the ejection mechanism is used for ejecting and guiding out the cold material heads and the shells at intervals and collecting the cold material heads and the shells.

Description

Technical Field

[0001] This invention relates to the field of mold technology, specifically to an injection molding mold for producing a profile sleeve for an air spring. Background Technology

[0002] Air springs are a key component of automotive suspension systems. In their normal state, the air spring inflates, creating a gap between it and the piston sleeve. Under the weight of the vehicle body, the soft rubber air spring (sleeve) is compressed downwards and collapses. The collapsed sleeve rolls down and outwards, like a sleeve being rolled up, eventually wrapping around the piston with the sleeve installed. The sleeve acts as a buffer and prevents wear between the air spring and the metal piston.

[0003] Therefore, the profile sleeve is a protective sleeve installed outside the air spring piston, manufactured through injection molding. For example... Figure 11 The shape shown is that of a cross-section sleeve, which is a straight cylinder. Several reinforcing ribs are distributed at intervals on the inner wall of the straight cylinder, and the cylinder wall at one end expands outward to form an annular protrusion.

[0004] However, the deep cavity structure of the aforementioned cylindrical shell and the reinforcing ribs on the inner wall result in high demolding resistance. Therefore, how to facilitate the demolding of the shell from the mold is a technical problem that urgently needs to be solved.

[0005] Therefore, the applicant has developed a new technical solution in the actual production process to solve the above-mentioned technical problems. Summary of the Invention

[0006] To address the aforementioned technical deficiencies, the present invention aims to provide an injection molding mold for producing air spring profile sleeves, which has the advantages of facilitating the ejection of the housing from the mold and making housing demolding easier.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This invention provides an injection molding die for producing a profile sleeve of an air spring, including a fixed mold plate, a fixed template, a moving template, a moving mold plate, and an ejection mechanism located between the moving template and the moving mold plate. The moving template has a convex template on the side facing the fixed template and two sliders slidably connected to the moving template and located on both sides of the convex template. The two sliders each have a semi-circular arc edge surrounding the convex template on the side facing the convex template. When the mold is opened, the fixed template is provided with a driving component that drives two sliders to move away from the convex template. When the mold is closed, the driving component drives the two sliders to move towards the convex template, so that the two semi-circular arc edges are surrounded to form a complete circle around the convex template. The fixed template is provided with a forming plate that fits against the inner wall of the complete circle and abuts against the top surface of the convex template. The forming plate, the two sliders, and the convex template form the forming cavity of the shell. The fixed template is provided with a main flow channel, and the convex template is provided with a secondary flow channel that communicates with the main flow channel. The secondary flow channel is used to guide the molten material in the main flow channel from the outer wall side of the convex template to the forming cavity, so that the ejection mechanism ejects the cold slug head formed in the main flow channel and the secondary flow channel and the shell formed in the forming cavity respectively. The ejection mechanism includes an annular ejection plate fitted on the outer wall of the convex template and several ejector pins passing through the convex template. The ejector pins and the ejection plate move together, and the ejector pins are used to eject the cold material head, while the ejection plate is used to eject the shell. It also includes a receiving mechanism, which is driven to start working when the ejection mechanism is working. It is used to eject and export the cold material head and the shell at intervals, and collect them separately.

[0008] By adopting the above technical solution, after mold closing, material is injected into the molding cavity through the main runner and secondary runner to form the shell. When the mold opens, the drive component moves the two sliders away from the punch plate, and then the ejector mechanism ejects the cold slug head. The cold slug head will be ejected first under the action of the ejector pin. As the ejector mechanism works, the ejector plate will completely eject the shell from the punch plate, so that the shell is ejected later than the cold slug head, and the shell and the cold slug head are ejected separately. There is no need to cut the cold slug head separately from the shell later. The ejector plate ejects the entire shell, which improves the uniformity of force when the shell is ejected from the punch plate, making it easier to eject the shell from the mold and making it easier to demold the shell. In addition, the design of the receiving mechanism makes it easy to collect the cold slug head and the shell separately according to the ejection order.

[0009] Preferably, the main flow channel extends out of the forming plate, and the secondary flow channel includes a disc disposed on the top surface of the convex template and entering the forming plate. The disc is coaxially distributed with the convex template, and a plurality of branch channels are formed on the top surface of the disc, which are radially distributed. Each branch channel intersects at the center of the disc and is connected to the main flow channel. A branch channel is formed on the top surface of the convex template, which is distributed corresponding to each branch channel. Each branch channel does not extend beyond the edge of the convex template at the end away from the disc. A casting channel is provided on the inner bottom wall of each branch channel, which extends obliquely outward from the side of the convex template. The casting channel extends obliquely from the branch channel toward the side wall of the convex template, and the casting channel is a conical channel. A flat channel connected to the conical channel is provided on the side near the side wall of the convex template.

[0010] Preferably, the ejection mechanism further includes an ejector pin fixing plate and a push plate located between the moving mold plate and the moving mold fixing plate. The push plate is distributed close to the moving mold fixing plate and is used to fix the ejector pin and drive one end of the ejector pin to move out of the convex mold plate. The push plate is provided with a plurality of ejector pins, one end of each ejector pin extending to the ejection plate and detachably connected to the ejection plate. The convex mold plate is provided with placement holes for each ejector pin to move. The placement holes are connected to each branch channel and the main channel at the center of the disc.

[0011] Preferably, the receiving mechanism includes a drive rod disposed on the lower end face of the push plate and a mounting plate disposed on the lower end face of the moving template, wherein an arc-shaped plate is rotatably disposed on the mounting plate; It also includes a receiving box, the upper end of which is provided with a receiving box for receiving cold material heads, and the receiving box is provided with a receiving component for receiving the shell. One end of the receiving box extends out of the receiving box and is close to the mold side. The drive rod, through the adjusting component, changes the tilt angle of the arc plate as the push plate moves relative to the moving template, and is used to guide the cold material head and the shell to the receiving box and the receiving component, respectively.

[0012] Preferably, the adjusting component includes a worm and a worm wheel 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, and 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 fixed plates, and the worm wheel rotates, causing the two fixed plates to rotate together. A gear is coaxially fixed at one end of the worm that extends out of the first plate, and a rack that meshes with the gear is provided on the drive rod. The rack is distributed along the length direction of the drive rod.

[0013] Preferably, the receiving component includes two inclined guide rails disposed inside the receiving box, the two guide rails supporting the annular protrusion by inserting the straight cylinder of the housing, and the arc plate and the receiving box are provided with adjustment components to position the housing on the guide rails; The two ends of the guide rail are respectively fixed to the inner walls of the receiving box, and the shells that are pushed out from the arc plate enter the guide rail for orderly storage. Alternatively, the outer wall of the receiving box may be provided with a storage track that communicates with two guide rails.

[0014] Preferably, the adjusting component includes an arc-shaped baffle on the side wall of the receiving box and a notch at the discharge point of the arc-shaped plate. When one end of the arc-shaped plate rotates into the receiving box, the notch corresponds to the guide rail, and the 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 end of the arc-shaped plate and the baffle. When the housing slides along the arc plate and the straight cylinder faces the outlet direction of the arc plate, the notch allows the straight cylinder of the housing to fall out of the arc plate, while the annular protrusion remains on the arc plate. The gap A allows the annular protrusion to slide out of the arc plate and move into the guide rail. As the housing 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 housing, causing the straight cylinder to tilt and fall out in the direction of the notch. Then the annular protrusion moves out of the arc-shaped plate from gap A and enters the guide rail.

[0015] Preferably, a rubber pad is provided on the side of the baffle away from the receiving box.

[0016] Preferably, the driving component includes obliquely distributed guide rods disposed on the fixed template, each slider has an insertion hole for inserting the guide rod, each slider is fitted with two guide rods, and the moving template has an exit hole for the guide rods to pass through.

[0017] Preferably, the convex template has an annular connecting plate on the outer wall of the end connected to the moving template. The connecting plate is fixed to the moving template by a locking screw. The locking screw is screwed into the moving template from the side of the moving template away from the fixed template and is threadedly connected to the connecting plate.

[0018] The beneficial effects of this invention are as follows: After mold closing, material is injected into the molding cavity through the main runner and secondary runner to form the shell. When the mold opens, the driving component drives the two sliders to move away from the punch plate, and then the ejector mechanism ejects the cold slug head. The cold slug head will be ejected first under the action of the ejector pin. As the ejector mechanism works, the ejector plate will completely eject the shell from the punch plate, so that the shell is ejected later than the cold slug head, and the shell and the cold slug head are ejected separately. There is no need to cut the cold slug head separately from the shell later. The ejector plate ejects the entire shell, which improves the uniformity of force when the shell is ejected from the punch plate, making it easier to eject the shell from the mold and making it easier to demold the shell. In addition, the design of the material collection mechanism makes it easy to collect the cold slug head and the shell separately according to the ejection order of the cold slug head and the shell. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of this embodiment; Figure 2 This is a structural schematic diagram illustrating the top column in this embodiment; Figure 3 This is a schematic diagram illustrating the structure of the molding cavity in this embodiment; Figure 4 This is a schematic diagram illustrating the structure of the convex template in this embodiment; Figure 5 This is a schematic diagram illustrating the structure of the guide rod in this embodiment; Figure 6 This is a schematic diagram illustrating the structure of the receiving mechanism in this embodiment; Figure 7 This is a schematic diagram illustrating the structure of the gear in this embodiment; Figure 8This is a schematic diagram illustrating the structure of the receiving box in this embodiment; Figure 9 This is a schematic diagram illustrating the structure of the baffle in this embodiment; Figure 10 This is a schematic diagram illustrating the contact between the annular protrusion and the baffle in this embodiment; Figure 11 This is a schematic diagram illustrating the structure of the shell.

[0021] Explanation of reference numerals in the attached figures: In the diagram: 1. Fixed mold fixing plate; 11. Fixed mold plate; 111. Forming plate; 112. Main runner; 12. Moving mold plate; 121. Moving mold fixing plate; 122. Protruding mold plate; 1221. Disc; 1222. Runner; 1223. Branch runner; 1224. Casting runner; 1225. Flat runner; 1226. Placement hole; 1227. Arched protrusion; 1228. Connecting plate; 1229. Locking screw; 123. Slider; 13. Forming cavity; 131. Forming groove; 14. Ejector plate; 141 15. Ejector pin; 15. Ejector pin fixing plate; 151. Push plate; 152. Support plate; 153. Ejector column; 16. Guide rod; 17. Drive rod; 171. Mounting plate; 172. Arc plate; 1721. Notch; 173. Worm gear; 174. Worm wheel; 175. First plate; 176. Second plate; 177. Rotating shaft; 178. Fixing plate; 179. Gear; 1791. Rack; 18. Receiving box; 181. Receiving box; 182. Guide rail; 183. Baffle; 2. Housing; 21. Annular protrusion. Detailed Implementation

[0022] 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.

[0023] An injection molding die for producing a profile sleeve for an air spring, such as Figure 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.

[0024] like Figure 1-6When 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. 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. 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. 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 housing 2 at intervals, and collect them separately.

[0025] like Figure 1-6 After mold closing, material is injected into the molding cavity 13 through the main runner 112 and the secondary runner to form the shell 2. When the mold opens, the drive component drives the two sliders 123 to move away from the punch plate 122 respectively. Then the ejection mechanism ejects the cold slug head. The cold slug head will be ejected first under the action of the ejector pin 141. As the ejection mechanism works, the ejector plate 14 pushes the shell 2 completely off the punch plate 122, so that the shell 2 is discharged later than the cold slug head, and the shell 2 and the cold slug head are discharged separately. There is no need to cut the cold slug head separately from the shell 2 later. The ejector plate 14 ejects the entire shell 2, which improves the uniformity of force when the shell 2 is ejected from the punch plate 122, making it easier to eject the shell 2 from the mold and make it easier to demold the shell 2. In addition, the design of the material collection mechanism makes it easy to collect the cold slug head and the shell 2 separately according to the discharge order of the cold slug head and the shell 2.

[0026] The housing 2 has a certain degree of hardness. If measured using Shore hardness, the hardness of this type of profile sleeve is usually between Shore A 85-95, or even Shore D 50-60 (much harder than tire rubber). This hardness range ensures that it is extremely wear-resistant and not easily cut or torn.

[0027] like Figure 1-5 The main flow channel 112 extends into the 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 are formed on the top surface of the disc 1221, which are radially distributed along the disc 1221. There are six branch channels 1222, which are evenly distributed along the top surface of the disc 1221. The top surface of the disc 1221 is the side of the disc 1221 facing away from the convex template 122. Each branch channel 1222 intersects at the center of the disc 1221 and communicates with the main flow channel 112. Branch channels 1223 are formed on the top surface of the convex template 122, which are distributed corresponding to each branch channel 1222. One end of each branch channel 1222 extends along the... The sidewall of the disc 1221 extends and connects with the corresponding branch channel 1223. Each branch channel 1223 does not extend beyond the edge of the protruding template 122 at the end away from the disc 1221. Each branch channel 1223 has a pouring channel 1224 that extends obliquely from the side of the protruding template 122 on its inner bottom wall. The pouring channel 1224 is distributed on the side of the branch channel 1223 away from the disc 1221. The pouring channel 1224 extends obliquely from the branch channel 1223 toward the sidewall of the protruding template 122. The pouring channel 1224 is a conical flow channel. The cone gradually decreases in size as it moves away from the branch channel 1223. A flat flow channel 1225 that connects with the conical flow channel is provided on the side close to the sidewall of the protruding template 122.

[0028] like Figure 1-5 At this time, after the molten material flows out from the main channel 112, it flows from each branch channel 1222 to the branch channel 1223, and then flows to the casting channel 1224, and flows out from the flat channel 1225. At this time, the molten material flows out from the side wall of the convex template 122, which facilitates filling the molding cavity 13. In addition, most of the cold slug head is formed on the top surface of the convex template 122 and in the casting channel 1224, which facilitates the subsequent separation of the cold slug head from the shell 2.

[0029] like Figure 1-5The ejection mechanism also includes an ejector pin fixing plate 15 and a push plate 151 located between the moving mold plate 12 and the moving mold fixing plate 121, as well as two opposing support plates 152 disposed on the moving mold fixing plate 121. The ejector pin fixing plate 15 and the push plate 151 are both located between the two support plates 152. The ejector pin fixing plate 15 is fixed to the push plate 151 by screws. The push plate 151 is distributed close to the moving mold fixing plate 121. The moving mold fixing plate 121 has a hole for the cylinder piston rod to pass through, so that the cylinder piston rod can connect to the push plate 151 and drive the push plate 151 and the ejector pin fixing plate 15 to move together towards the moving mold plate 12. 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 mold plate 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. Next, the mold plate 122 has placement holes 1226 for each ejector pin 141 to move. The placement holes 1226 are connected to each branch channel 1223 and the main channel 112 in the center of the disc 1221. When the mold is closed, each ejector pin 141 is located in the placement hole 1226, blocking the material in the branch channel 1223 from continuing to flow along the placement hole 1226. The bottom of the branch channel 1223 is provided with an arched protrusion 1227 located between the placement hole 1226 and the gating channel 1224. Its arched structure helps to guide the molten material from the branch channel 1223 to flow smoothly into the gating channel 1224, reducing material retention or backflow and ensuring uniform filling. In addition, the arched structure has a certain mechanical support, which can enhance the structural strength of the bottom of the branch channel 1223 and prevent deformation or damage during high-pressure injection molding. It also facilitates the demolding of the cold slug head.

[0030] like Figure 1-5 The driving component includes obliquely distributed guide rods 16 disposed on the fixed template 11. Each slider 123 has an insertion hole for inserting the guide rods 16, and each slider 123 is fitted with two guide rods 16. Each guide rod 16 extends obliquely from the fixed template 11 and gradually away from the convex template 122. The moving template 12 and the support plate 152 both have through holes for the guide rods 16 to pass through. During the mold opening and closing process, the guide rods 16 drive the two sliders 123 to reciprocate.

[0031] like Figure 1-5Since the outer wall of the protruding template 122 has a forming groove 131, the protruding template 122 needs to be disassembled when it needs to be replaced after multiple uses. At this time, the outer wall of the protruding template 122 connected to the moving template 12 is provided with an annular connecting plate 1228. The connecting plate 1228 is fixed to the moving template 12 by locking screws 1229. At this time, the locking screws 1229 are screwed into the moving template 12 from the side of the moving template 12 away from the fixed template 11 and are threadedly connected to the connecting plate 1228, which facilitates the installation of the protruding template 122. The lower end of the ejector plate 14 abuts against the connecting plate 1228, and each ejector post 153 passes through the connecting plate 1228.

[0032] like Figure 6-11 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. The drive rod 17 and the mounting plate 171 are detachably connected to the push plate 151 and the moving template 12, respectively. The drive rod 17 is L-shaped, with its vertical end connected to the lower end face of the push plate 151 and its horizontal end extending to one side of the mounting plate 171. In order to increase the strength of the drive rod 17, the horizontal end of the drive rod 17 can be fixedly connected to the side wall of the mounting plate 171. An arc plate 172 is rotatably provided on the mounting plate 171. The receiving mechanism also includes a receiving box 18. The upper end of the receiving box 18 is provided with a receiving box 181 with the box opening facing upward and receiving the cold material head. The receiving box 18 is provided with a receiving component for receiving the shell 2. The box openings of the receiving box 18 are also distributed upward and one end of the receiving box 18 extends out of the receiving box 181 to the side near the mold, so that the shell 2 can enter the receiving box 18. The drive rod 17 changes the tilt angle of the arc plate 172 as the push plate 151 moves relative to the moving template 12 via the adjusting member, which is used to guide the cold material head and the housing 2 to the receiving box 181 and the receiving member, respectively.

[0033] like Figure 6-11The adjusting components include a worm gear 173 and a worm wheel 174 rotatably connected to the mounting plate 171. Specifically, the mounting plate 171 has two oppositely distributed first plates 175, and the two ends of the worm gear 173 are rotatably connected to the two first plates 175 respectively. The mounting plate 171 also has two oppositely distributed second plates 176, and a rotating shaft 177 is rotatably 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 gear 173, and the rotating shaft 177 is located above the worm gear 173. When the arc plate 172 is in a horizontal position, which is also the mold closing state, the axis of the worm gear 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 gear 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 with second plates 176 and are fixed to the corresponding fixed plates 178 respectively. After the worm 173 meshes with the worm wheel 174, the worm wheel 174 rotates, which drives the rotating shaft 177 to rotate, and then drives the two fixed plates 178 to rotate. This achieves the purpose of the worm wheel 174 rotating and driving the two fixed plates 178 to rotate together, and then driving the arc-shaped plate 172 to rotate. 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 of the two first plates 175 that are opposite to each other. 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 horizontal end of the drive rod 17.

[0034] like Figure 6-11 The receiving component includes two inclined guide rails 182 disposed inside the receiving box 18. One end of the guide rail 182 is fixedly connected to one side wall of the receiving box 18 extending out of the receiving box 181, and gradually begins to extend downward. The two guide rails 182 support the annular protrusion 21 by inserting the straight cylinder of the housing 2. At this time, the housing 2 is in the correct state on the guide rail 182. The arc plate 172 and the receiving box 181 are provided with adjustment components to make the housing 2 in the correct state on the guide rail 182.

[0035] like Figure 6-11 The two ends of the guide rail 182 are respectively fixed to the inner walls of the receiving box 18. The housing 2 that is pushed out from the arc plate 172 enters the guide rail 182 for orderly storage. At this time, orderly storage means that each housing 2 is arranged in the correct state between the two guide rails 182 for easy retrieval later. At this time, an opening and closing door can be set on one side wall of the receiving box 18 for retrieval. Opening the door will allow the housing 2 on the guide rail 182 to slide out of the receiving box 18. This is a usage state, which is not commonly used. Normal state: Alternatively, the outer wall of the receiving box 18 is provided with a storage track (not shown in the figure) that communicates with the two guide rails 182. In this case, the receiving box 18 has an outlet on the lower side of the two guide rails 182, so that the shell 2 that slides down from the two guide rails 182 can enter the storage track for storage. Multiple storage tracks can be arranged side by side, and the bottom is connected by a base plate. The bottom of the base plate is provided with a roller with a brake, which makes it easy to change the storage track that is connected to the two guide rails 182.

[0036] like Figure 6-11 The adjusting components include an arc-shaped baffle 183 set on the side wall of the receiving box 181 and a notch 1721 opened at the discharge port of the arc-shaped plate 172. The width of the baffle 183 gradually increases from the upper opening of the receiving box 181 to block the annular protrusion 21. When one end of the arc-shaped plate 172 rotates into the receiving box 18, the notch 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. 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 the end of the arc-shaped plate 172 and the baffle 183.

[0037] like Figure 6-11 When the shell 2 slides along the arc plate 172, due to the design of the arc plate 172 and the fact that the shell 2 is cylindrical with an annular protrusion 21 at one end, after the shell 2 is pushed out from the protruding plate 122, as it rolls along the arc plate 172, the length direction of the straight cylinder gradually becomes parallel to the length direction of the arc plate 172. As a result, the shell 2 slides out of the arc plate 172 and presents two states: In the first state: when the straight cylinder is facing 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. The gap A allows the annular protrusion 21 to slide out of the arc plate 172 and move into the guide rail 182.

[0038] like Figure 10 The second state: When the housing 2 slides along the arc plate 172 and the annular protrusion 21 is facing 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.

[0039] like Figure 6-11 The orientation of the housing 2 is adjusted so that all housings 2 entering the guide rail 182 have annular protrusions 21 facing upwards, which facilitates the orderly collection of housings 2; the side of the baffle 183 away from the receiving box 181 is provided with a rubber pad to reduce the collision between the housing 2 and the baffle 183.

[0040] Material receiving process: Step 1: When the mold is closed, the arc plate 172 is in a horizontal state. After the mold is opened, the moving plate 12 drives the mounting plate 171 to move away from the fixed 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 receiving box 18. During this process, the guide rod 16 drives the two sliders 123 to move away from the convex plate 122, which facilitates the subsequent ejection of the shell 2. Step 2: After the mold is opened, the push plate 151 pushes the ejector pins 141 and the ejector column 153 together to move towards the convex plate 122. The cold slug head is pushed by each ejector pin 141 and separates from the shell 2, and is then ejected first. During this process, the push plate 151 moves and drives one end of the arc plate 172 to rotate towards the receiving box 181, so that the cold slug head that falls out is received by the arc plate 172 and falls down along the inclined arc plate 172 into the receiving box 181; at this time, the ejector column 153 also pushes one end of the shell 2 out of the convex plate 122 by a small part. Step 3: As the push plate 151 continues to move, the top column 153 continues to push the shell 2 out of the convex template 122, while the arc plate 172 continues to rotate, moving away from the receiving box 181 and onto the receiving box 18. During this process, one end of the arc plate 172 does not contact the opening of the receiving box 181, allowing one end of the arc plate 172 to rotate above the receiving box 18. When the push plate 151 moves into position, allowing the top column 153 to completely push the shell 2 out of the convex template 122, one end of the arc plate 172 rotates to above the two guide rails 182. Subsequently, the shell 2 falls onto the arc plate 172 and moves along the inclined arc plate 172 onto the guide rails 182 for orderly collection.

[0041] like Figure 8 and Figure 9 and Figure 10 In order to make one end of the arc plate 172 closer to the guide rail 182, the wall of the opening of the receiving box 18 extending from the receiving box 181 is in the same direction of inclination as the guide rail 182, and the upper end face of the guide rail 182 is flush with the inclined opening of the receiving box 18. There is a gap between the receiving box 181 and the guide rail 182 to facilitate the movement of the housing 2 along the guide rail 182.

[0042] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention 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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