An injection vulcanization molding apparatus for an air spring rubber air bag

Abstract

The application relates to an injection vulcanization forming device for an air spring rubber air bag, which comprises a lower workbench and an upper workbench, side guide columns and rear guide columns are connected between the upper workbench and the lower workbench, upper movable seats and lower movable seats are slidably arranged on the side guide columns, and at least one rear movable seat is arranged on the rear guide columns, end fixing mechanisms are arranged on the upper movable seat and the lower movable seat, the end fixing mechanisms comprise end annular molds, an intermediate mold is arranged on the rear movable seat and located between the upper and lower end annular molds, an air bag-shaped inner cavity is formed in the intermediate mold and the end annular molds when the intermediate mold and the end annular molds are combined, an annular steam cavity is arranged in the end annular mold, a sectional steam cavity is arranged in the intermediate mold, a plurality of injection pipes are circumferentially arranged on the end annular mold and the intermediate mold, and the injection pipes penetrate into the air bag-shaped inner cavity. The application can simplify the process and save energy consumption.

Description

Technical Field

[0001] This invention relates to injection vulcanization molding equipment, and in particular to an injection vulcanization molding equipment for an air spring rubber bladder. Background Technology

[0002] An air spring is an industrial component that can provide support, cushioning, braking, height adjustment, and angle adjustment. The rubber air bladder inside the air spring is the most important component. In order to improve the performance of the rubber air bladder, existing air springs typically use two or more layers of rubber or a combination of other materials for the entire air bladder or key parts.

[0003] Therefore, its production process is much more complicated than that of a single-layer rubber airbag. Generally, an inner rubber layer is prepared, then a cord fabric or reinforcing fiber layer is wrapped around the inner rubber layer, and then an outer rubber layer is covered and bonded together. Finally, vulcanization is performed. In existing production, the process of covering the inner rubber layer with the cord fabric or reinforcing fiber layer and then vulcanizing it requires two separate machines, involving product transfer and complicated procedures. Moreover, both covering the outer rubber layer and vulcanization require heating, which means heating twice in two separate machines, increasing energy consumption. Therefore, this application proposes an injection vulcanization molding machine for air spring rubber airbags, which can cover the inner rubber layer with the cord fabric or reinforcing fiber layer and then vulcanize it, so that these two processes can be completed in one machine, simplifying the process and reducing energy consumption. Summary of the Invention

[0004] This invention proposes an injection vulcanization molding equipment for air spring rubber airbags, which reduces the production steps of air spring rubber airbags, reduces energy consumption, and solves the above-mentioned problems existing in the use of existing technologies.

[0005] The technical solution of the present invention is implemented as follows: An injection vulcanization molding device for an air spring rubber airbag includes a lower worktable and an upper worktable. Side guide columns are connected between the four corners of the upper and lower worktables, and a rear guide column is connected between the rear sides of the upper and lower worktables. An upper movable seat, a lower movable seat, and at least one rear movable seat are slidably disposed on the side guide columns between the upper and lower worktables. Both the upper and lower movable seats are provided with end fixing mechanisms. The end fixing mechanism includes an end annular mold. The rear movable seat is provided with an intermediate mold located between the upper and lower end annular molds. When the intermediate mold and the end annular mold are combined, an airbag-shaped inner cavity is formed inside. An annular steam cavity is opened in the end annular mold, and a segmented steam cavity is opened in the intermediate mold. Several injection tubes are circumferentially distributed on both the end annular mold and the intermediate mold. The injection tubes penetrate into the airbag-shaped inner cavity.

[0006] The injection tube on the end annular mold passes through the annular steam cavity, and the injection tube on the middle mold passes through the segmented steam cavity.

[0007] The intermediate mold includes a rear semi-circular mold and an arc-shaped mold hinged to both ends of the rear semi-circular mold. The two arc-shaped molds and the rear semi-circular mold can form a ring. The rear movable seat is provided with a drive mechanism for controlling the rotation of the arc-shaped mold relative to the rear semi-circular mold.

[0008] The rear semi-circular mold and the two arc-shaped molds are each equipped with a segmented steam cavity, and each segmented steam cavity is provided with a steam inlet pipe and a steam outlet pipe on both sides.

[0009] The aforementioned end annular mold is provided with an end steam inlet pipe and an end steam outlet pipe that penetrate into the annular steam cavity, and the annular steam cavity is provided with a partition between the end steam inlet pipe and the end steam outlet pipe.

[0010] The end fixing mechanism includes a sleeve, an upper retaining ring, and an inner sleeve. Both the upper and lower movable seats are provided with connecting seats. The connecting seats are provided with a first cylinder for driving the inner sleeve to move up and down. The sleeve is sleeved on the outside of the inner sleeve. The upper retaining ring is fixed on the sleeve. The end annular mold is located on the end of the upper retaining ring near the middle mold.

[0011] The aforementioned end fixing mechanism located on the lower movable seat has an inflation pipe inside its inner sleeve, and an inflation head extending out of the inner sleeve is connected to the inflation pipe.

[0012] The inner sleeve has a sleeve steam cavity, and the inner sleeve is provided with a sleeve steam inlet pipe and a sleeve steam outlet pipe that enter the sleeve steam cavity.

[0013] The drive mechanism includes a second cylinder and a connecting arm. Both ends of the rear semi-circular mold are provided with hinge seats. The connecting arm is rotatably connected to the hinge seats. The cylinder body of the second cylinder is connected to the rear movable seat. The piston rod of the second cylinder is connected to the connecting arm. The rear movable seat is provided with a support arm for fixed connection with the hinge seats.

[0014] The upper and lower worktables are each equipped with a third cylinder, and the third cylinder is fixedly connected to the connecting seat.

[0015] In summary, the beneficial effects of the present invention are as follows:

[0016] 1. In the injection vulcanization molding process of this invention, the upper and lower ends of the inner rubber layer wrapped with a cord fabric or reinforcing fiber layer are first fixed to the end fixing mechanisms at the upper and lower ends of the invention. Then, the intermediate mold and the end annular mold are combined so that the rubber layer is located in the airbag-shaped inner cavity. Steam is introduced into both the annular steam cavity and the segmented steam cavity for heating. The injection tube injects the rubber material into the airbag-shaped inner cavity and covers the inner rubber layer wrapped with the cord fabric or reinforcing fiber layer. After the injection is completed, vulcanization molding is performed. In summary, this invention simplifies the process and saves energy consumption. Attached Figure Description

[0017] 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.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure when observed from another angle;

[0020] Figure 3 This is a top view of the present invention;

[0021] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;

[0022] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure along the BB direction;

[0023] Figure 6 for Figure 4 A magnified view of a portion at point A;

[0024] Figure 7 for Figure 5 A magnified view of the area at point B;

[0025] Figure 8 This is a schematic diagram of the structure of the present invention without the upper worktable, lower worktable, side guide pillars and rear guide pillars;

[0026] Figure 9 For the present utility model in Figure 8 Based on the structural diagram, the rear movable seat and the second cylinder section are removed;

[0027] Figure 10 for Figure 9 A schematic diagram of the structure when observed from the rear;

[0028] Figure 11 For the present utility model in Figure 8 Based on the structural diagram, the upper movable seat, lower movable seat, and rear movable seat are removed;

[0029] Figure 12 for Figure 11 Schematic diagram of the cross-sectional structure along the CC direction;

[0030] Figure 13 for Figure 11 Schematic diagram of the cross-sectional structure along the DD direction.

[0031] In the diagram: 1. Lower worktable; 2. Upper worktable; 3. Side guide pillar; 4. Rear guide pillar; 5. Upper movable seat; 6. Lower movable seat; 7. Rear movable seat; 8. End annular mold; 81. Annular steam cavity; 82. End steam inlet pipe; 83. End steam outlet pipe; 84. Baffle; 9. Intermediate mold; 91. Segmented steam cavity; 92. Rear semi-circular mold; 93. Arc-shaped mold; 94. Steam inlet pipe; 95. Steam outlet pipe; 10. Airbag-shaped inner cavity; 101. Wave-shaped convex chamber; 11. Injection tube; 12. Sleeve head; 13. Upper retaining ring; 14. Inner sleeve; 141. Sleeve steam cavity; 142. Sleeve steam inlet pipe; 143. Sleeve steam outlet pipe; 144. Inflation pipe; 145. Inflation head; 15. Connecting seat; 16. First cylinder; 17. Second cylinder; 18. Connecting arm; 19. Hinge seat; 20. Support arm; 21. Third cylinder. Detailed Implementation

[0032] The following will refer to the appendices in the embodiments of the present invention. Figure 1-13The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0033] Example:

[0034] like Figures 1 to 13 As shown, this invention discloses an injection vulcanization molding equipment for an air spring rubber bladder, including a lower worktable 1 and an upper worktable 2. Side guide pillars 3 are connected between the four corners of the upper worktable 2 and the lower worktable 1, and a rear guide pillar 4 is connected between the rear sides of the upper worktable 2 and the lower worktable 1. An upper movable seat 5 and a lower movable seat 6, slidably mounted on the side guide pillars 3, and two rear movable seats 7 mounted on the rear guide pillars 4 are provided between the upper worktable 2 and the lower worktable 1. Both the upper movable seat 5 and the lower movable seat 6 are provided with end fixing mechanisms, each including an end annular mold 8. Additionally, each of the two rear movable seats 7 is provided with an intermediate mold 9 located between the upper and lower end annular molds 8. When the intermediate mold 9 and the end annular mold 8 are combined, an air bladder-shaped inner cavity 10 is formed inside. The airbag-shaped inner cavity 10 is consistent with the outer contour of the air spring rubber airbag to be produced. In addition, an annular steam cavity 81 is opened in the end annular mold 8, and a segmented steam cavity 91 is opened in the middle mold 9. Steam is introduced into both the annular steam cavity 81 and the segmented steam cavity 91 during the use of this invention, so as to heat the end annular mold 8 and the middle mold 9. Furthermore, three injection tubes 11 are circumferentially distributed on the uppermost end annular mold 8 and the two middle molds 9. The injection tubes 11 penetrate into the airbag-shaped inner cavity 10 and are used to inject rubber into the airbag-shaped inner cavity 10, so that the rubber covers the inner rubber layer wrapped with cord fabric or reinforcing fiber layer to form an outer rubber layer. After the injection is completed, this invention can be directly vulcanized and molded.

[0035] In this process, the injection tube 11 on the end annular mold 8 passes through the annular steam cavity 81, while the injection tube 11 on the middle mold 9 passes through the segmented steam cavity 91. The annular steam cavity 81 and the segmented steam cavity 91 are heated, so that the rubber injected from the injection tube 11 into the airbag-shaped inner cavity 10 can maintain its temperature and is not easily cooled, thereby maintaining the fluidity of the rubber injected into the airbag-shaped inner cavity 10.

[0036] In this invention, the intermediate mold 9 specifically includes a rear semi-circular mold 92 and an arc-shaped mold 93 hinged to both ends of the rear semi-circular mold 92. These two arc-shaped molds 93 and the rear semi-circular mold 92 can form a ring. A drive mechanism is provided on the rear movable seat 7 to control the rotation of the arc-shaped mold 93 relative to the rear semi-circular mold 92. The drive mechanism can cause the arc-shaped mold 93 to close onto the rear semi-circular mold 92 to form a ring, or to open from the rear semi-circular mold 92. This structure facilitates the insertion and removal of the air spring rubber airbag. The drive mechanism specifically includes a second cylinder 17 and... The connecting arm 18 is fixedly connected to the arc-shaped mold 93. The two ends of the rear semi-circular mold 92 are provided with hinge seats 19. The connecting arm 18 is rotatably connected to the hinge seats 19. The cylinder body of the second cylinder 17 is hinged to the rear movable seat 7. The piston rod of the second cylinder 17 is hinged to the connecting arm 18. The rear movable seat 7 is provided with a support arm 20 for fixed connection with the hinge seats 19. That is to say, the rear semi-circular mold 92 is fixedly connected to the rear movable seat 7. The second cylinder 17 can drive the arc-shaped mold 93 to rotate, so that the arc-shaped mold 93 can open or close on the rear semi-circular mold 92.

[0037] Furthermore, both the rear semicircular mold 92 and the two arc-shaped molds 93 have segmented steam cavities 91, and each segmented steam cavity 91 has a steam inlet pipe 94 and a steam outlet pipe 95 on both sides. The steam is always in a circulating state, entering the segmented steam cavity 91 from the steam inlet pipe 94 and exiting from the steam outlet pipe 95, so that the rear semicircular mold 92 and the two arc-shaped molds 93 can be kept in a heated state.

[0038] Similarly, the annular mold 8 at the end is also provided with an end steam inlet pipe 82 and an end steam outlet pipe 83 that penetrate into the annular steam cavity 81. Since the annular steam cavity 81 is annular, in order to enable the steam to circle around the annular steam cavity 81 before leaving, a partition 84 is provided in the annular steam cavity 81 between the end steam inlet pipe 82 and the end steam outlet pipe 83. The end steam inlet pipe 82 and the end steam outlet pipe 83 are relatively close. The partition 84 prevents the steam entering from the end steam inlet pipe 82 from leaving directly from the end steam outlet pipe 83, so that the steam can go around the annular steam cavity 81 before leaving from the end steam outlet pipe 83.

[0039] The location of the injection tube 11 should be further explained here. The airbag-shaped inner cavity 10 of the present invention has three interconnected corrugated convex chambers 101. The injection tube 11 is located on the upper side of each corrugated convex chamber 101. Therefore, the uppermost end annular mold 8 and the two intermediate molds 9 are each circumferentially distributed with three injection tubes 11, while the lowermost end annular mold 8 is not provided with an injection tube 11. This distribution facilitates the uniform distribution of the injected rubber on the inner rubber layer. The three injection tubes 11 located in the intermediate mold 9 are located on the two arc-shaped molds 93 and the rear semi-circular mold 92, respectively, that is, they pass through the segmented steam cavities 91 of the two arc-shaped molds 93 and the rear semi-circular mold 92.

[0040] Specifically, the end fixing mechanism includes a sleeve 12, an upper retaining ring 13, and an inner sleeve 14. Connecting seats 15 are provided on both the upper movable seat 5 and the lower movable seat 6. A first cylinder 16 is provided inside the connecting seat 15 to drive the inner sleeve 14 to move up and down. The sleeve 12 is sleeved on the inner sleeve 14, and the upper retaining ring 13 is fixed on the sleeve 12. The upper retaining ring 13, together with the inner sleeve 14, can clamp the end of the air spring rubber airbag. The end annular mold 8 is located on the end of the upper retaining ring 13 near the middle mold 9. When clamping the end of the air spring rubber airbag, the first cylinder 16 first controls the inner sleeve 14 to move away from the upper retaining ring 13, so as to facilitate the placement of the end of the air spring rubber airbag between the inner sleeve 14 and the upper retaining ring 13. Then, the first cylinder 16 controls the inner sleeve 14 to move closer to the upper retaining ring 13 to clamp the end of the air spring rubber airbag.

[0041] In this invention, an inflation pipe 144 is provided in the inner sleeve 14 of the end fixing mechanism located on the lower movable seat 6. An inflation head 145 is connected to the inflation pipe 144 and extends out of the inner sleeve 14. Inflation is performed through the inflation head 145 toward the inflation pipe 144, which can increase the internal air pressure of the air spring rubber airbag.

[0042] Furthermore, a steam cavity 141 is also provided in the inner sleeve 14. Similarly, a steam inlet pipe 142 and a steam outlet pipe 143 are also provided on the inner sleeve 14 to enter the steam cavity 141. Steam is continuously supplied to the steam cavity 141 through the steam inlet pipe 142 and the steam outlet pipe 143, which further improves the heating effect of the present invention.

[0043] In addition, both the upper worktable 2 and the lower worktable 1 are equipped with a third cylinder 21. The third cylinder 21 is fixedly connected to the connecting seat 15. The third cylinder 21 can make the upper worktable 2 and the lower worktable 1 move away from each other, thereby facilitating the removal of the air spring rubber airbag.

[0044] The working principle of this invention is as follows: The upper and lower ends of the inner rubber layer wrapped with a fabric or reinforcing fiber layer are respectively fixed to the end fixing mechanisms at the upper and lower ends of the invention. Then, the intermediate mold 9 and the end annular mold 8 are combined so that the rubber layer is located inside the airbag-shaped inner cavity 10. Since the shape of the airbag-shaped inner cavity 10 is the same as the outer contour of the final air spring rubber airbag, there is still a certain gap between the inner rubber layer wrapped with the fabric or reinforcing fiber layer and the inner wall of the airbag-shaped inner cavity 10. Then, steam is introduced into both the annular steam cavity 81 and the segmented steam cavity 91 for preheating. Nitrogen gas is injected into the inflation pipe 144 through the inflation head 145. The nitrogen gas enters the airbag-shaped inner cavity 10 and is located inside the inner rubber layer, so that the inner rubber layer... The internal pressure is maintained to prevent the rubber injected by the injection tube 11 from being squeezed and deformed. Then, the injection tube 11 injects the rubber material into the airbag-shaped inner cavity 10 and covers the inner rubber layer wrapped with a curtain or reinforcing fiber layer, filling the gap between the inner rubber layer and the inner wall of the airbag-shaped inner cavity 10. After the injection is completed, the steam from the annular steam cavity 81 and the segmented steam cavity 91 continues to heat the airbag-shaped inner cavity 10, while the inflation head 145 fills more nitrogen into the inflation pipe 144, keeping the airbag-shaped inner cavity 10 under high temperature and high pressure for a certain period of time, thereby vulcanizing the final air spring rubber airbag. In summary, the present invention simplifies the process and saves energy consumption compared with the prior art.

[0045] It should also be noted that the terms used in this invention, such as "front," "rear," "vertical," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An injection vulcanization molding apparatus for an air spring rubber bladder, comprising a lower worktable and an upper worktable, wherein side guide posts are respectively connected between the four corners of the upper and lower worktables, and a rear guide post is connected between the rear sides of the upper and lower worktables, characterized in that: Between the upper and lower worktables are an upper movable seat, a lower movable seat, and at least one rear movable seat mounted on a rear guide post, all slidably mounted on the side guide post. Both the upper and lower movable seats have end fixing mechanisms, each including an end annular mold. The rear movable seat has an intermediate mold located between the upper and lower end annular molds. When the intermediate mold and the end annular mold are combined, they form an air-bag-like inner cavity. The end annular mold has an annular steam cavity, and the intermediate mold has segmented steam cavities. Both the end annular mold and the intermediate mold have several injection points distributed circumferentially. The injection tube penetrates into the airbag-shaped inner cavity. The end fixing mechanism includes a sleeve, an upper retaining ring, and an inner sleeve. Both the upper and lower movable seats are provided with connecting seats. The connecting seats are provided with a first cylinder for driving the inner sleeve to move up and down. The sleeve is fitted over the inner sleeve. The upper retaining ring is fixed to the sleeve. The end annular mold is located on the end of the upper retaining ring near the middle mold. An inflation pipe is opened in the inner sleeve of the end fixing mechanism located on the lower movable seat. An inflation head is connected to the inflation pipe and extends out of the inner sleeve. Inflation is performed through the inflation head toward the inflation pipe, which can increase the internal air pressure of the air spring rubber airbag.

2. The injection vulcanization molding equipment for an air spring rubber bladder according to claim 1, characterized in that: The injection tube on the end annular mold passes through the annular steam cavity, and the injection tube on the middle mold passes through the segmented steam cavity.

3. The injection vulcanization molding equipment for an air spring rubber bladder according to claim 2, characterized in that: The intermediate mold includes a rear semi-circular mold and an arc-shaped mold hinged to both ends of the rear semi-circular mold. The two arc-shaped molds and the rear semi-circular mold can form a ring. The rear movable seat is provided with a drive mechanism for controlling the rotation of the arc-shaped mold relative to the rear semi-circular mold.

4. The injection vulcanization molding equipment for an air spring rubber bladder according to claim 3, characterized in that: The rear semi-circular mold and the two arc-shaped molds each have segmented steam cavities, and each segmented steam cavity has a steam inlet pipe and a steam outlet pipe on both sides.

5. The injection vulcanization molding equipment for an air spring rubber bladder according to claim 1, characterized in that: The annular mold at the end is provided with an end steam inlet pipe and an end steam outlet pipe that penetrate into the annular steam cavity. The annular steam cavity is provided with a partition between the end steam inlet pipe and the end steam outlet pipe.

6. The injection vulcanization molding equipment for an air spring rubber bladder according to claim 1, characterized in that: The inner sleeve has a sleeve steam cavity, and the inner sleeve is provided with a sleeve steam inlet pipe that leads into the sleeve steam cavity and a sleeve steam outlet pipe.

7. The injection vulcanization molding equipment for an air spring rubber bladder according to claim 3, characterized in that: The driving mechanism includes a second cylinder and a connecting arm. The connecting arm is fixedly connected to the arc-shaped mold. Both ends of the rear semi-circular mold are provided with hinge seats. The connecting arm is rotatably connected to the hinge seats. The cylinder body of the second cylinder is connected to the rear movable seat. The piston rod of the second cylinder is connected to the connecting arm. The rear movable seat is provided with a support arm for fixed connection with the hinge seats.

8. The injection vulcanization molding equipment for an air spring rubber bladder according to claim 1, characterized in that: Both the upper and lower worktables are equipped with a third cylinder, which is fixedly connected to the connecting seat.

Images