A glue injection vulcanization device for metal-rubber composite damping spring

Abstract

The present application relates to vulcanized product manufacturing device technical field, specifically to a kind of metal rubber composite damping spring glue injection vulcanization device, including upper die assembly, lower die assembly and located between upper die assembly and lower die assembly petal die assembly, glue injection runner is equipped on upper die assembly, lower die assembly includes stripping unit and mould unit, the outer end of petal die assembly is connected with open-close mould assembly and petal die assembly is controlled by open-close mould assembly open and close, limit unit is equipped on petal die assembly, petal die assembly includes multiple groups of petal die module, each group of petal die module includes the petal die body of relatively symmetrical cooperation, the end of petal die body is equipped with key, open-close mould assembly includes the slot plate of sliding connection with key, the vertical movement of slot plate makes the petal die body in petal die module open or close.The present application can realize the automatic separation of petal die and product, the automatic opening and closing of petal die, the automatic moulding of product, and the heat loss of mould is small, and process stability is good.

Description

Technical Field

[0001] This invention relates to the field of vulcanization product manufacturing equipment technology, specifically to a vulcanization device for injecting rubber into a metal-rubber composite vibration damping spring. Background Technology

[0002] Metal-rubber composite vibration damping springs are typically made of metal and rubber through vulcanization. They are key components for vibration damping in rail vehicles. The manufacturing process requires rubber injection, and the vulcanization mold is an essential component. Mold loading and unloading are crucial steps in the production of these springs, and these steps are critical factors in ensuring product quality. Currently, most vulcanization molds for metal-rubber composite vibration damping springs are manual or semi-automatic, which presents the following problems: 1. Mold operation is difficult, inefficient, and has a short lifespan, leading to frequent product quality issues; 2. During demolding, the mold flaps adhere closely to the mold cavity, hindering flash removal and automated loading and unloading of the product frame; 3. Long mold loading and unloading times result in significant heat loss and compromised mold process stability.

[0003] Among existing technologies, the following patents relate to the automatic molding and demolding of vibration damping springs:

[0004] 1. The invention patent with patent number "202110855233.X" and patent name "fully automatic demolding rubber mold and demolding method" includes a bottom mold fixed to the lower hot plate of the vulcanizing machine, a support mold placed on the bottom mold and insertable into an external bracket, an upper mold set directly above the support mold and fixed to the upper hot plate of the vulcanizing machine, a cavity module assembly set on the support mold and enclosing to form the product cavity, and a middle mold supported between the support mold and the upper mold. This invention can improve the vulcanization efficiency of the product and the space utilization of the mold, reduce the demolding time, improve the demolding efficiency, and realize fully automatic core pulling demolding.

[0005] 2. The invention patent with patent number "201710550578.8" and patent title "Automatic Demolding Mold and Automatic Demolding Method for Elastic Support of Bearing Type Gearbox" includes a bottom mold assembly, a lower mold assembly, an upper mold assembly, and a middle mold assembly. The upper mold assembly includes a top plate, an injection plug, and an injection cylinder. The bottom mold assembly includes a bottom plate, a support plate, and a tie plate. The lower mold assembly includes an outer lobe mold, an inner lobe mold, an upper molded surface insert, a lower molded surface insert, a mold core, and an ejector rod assembly. The lower molded surface insert is placed between the outer lobe mold and the inner lobe mold and forms a vulcanization cavity with the outer lobe mold, the inner lobe mold, and the upper molded surface insert. This solution features a simple demolding operation, short demolding time, and high efficiency.

[0006] However, the existing technologies mentioned above cannot achieve horizontal and vertical separation of the mold, resulting in limited mold loading and unloading efficiency and failing to solve the aforementioned problems. Therefore, designing a vulcanization device for metal-rubber composite vibration damping springs that enables automatic opening and closing of the mold and product, separation of the valve from the mold, high production efficiency, and guaranteed product quality is an urgent problem to be solved. Summary of the Invention

[0007] To address the aforementioned problems, this invention provides a vulcanization device for metal-rubber composite damping springs. This device enables automatic opening and closing of the mold and the product, facilitates the misalignment and separation of the mold segments, and allows for easy removal of flash. It also facilitates automated mold assembly and demolding of the product frame, thereby improving the efficiency and quality of damping spring manufacturing.

[0008] This invention provides a vulcanization device for a metal-rubber composite damping spring, specifically including an upper mold assembly, a lower mold assembly, and a flap mold assembly located between the upper and lower mold assemblies. The upper mold assembly is provided with an injection channel; the lower mold assembly includes a demolding unit and a mold assembly unit. The mold assembly unit is used to install the metal part of the damping spring to be injected into the mold, and the demolding unit is used to remove the injected damping spring from the mold; the outer end of the flap mold assembly is connected to an opening and closing mold assembly, which controls the opening and closing of the flap mold assembly, and the flap mold assembly is provided with a limiting unit.

[0009] Furthermore, the valve mold assembly includes multiple sets of paired valve mold groups, each set of valve mold groups includes valve mold bodies arranged in a relatively symmetrical manner, and the inner end of each valve mold body is provided with a receiving hole for accommodating the damping spring; a limiting unit is provided on the hole wall of the valve mold body.

[0010] Furthermore, the end of the valve mold body is provided with a key, and the opening and closing mold assembly includes a groove plate that is slidably connected to the key. The valve mold body in the valve mold assembly is opened or closed by the vertical movement of the groove plate. The lower end of the groove plate is provided with a limiting step one, and the lower end of the valve mold body is provided with a limiting step two located above the limiting step one. The downward opening stroke of the valve mold body is limited by the contact between the limiting step one and the limiting step two.

[0011] Furthermore, the slot plate is provided with a "figure-eight" keyway, and the key on the body of the petal module in each petal module group is in the shape of a "figure-eight" that matches the keyway; a mold frame is connected to the slot plate, and the slot plate is moved vertically by the mold frame so that the key slides in the keyway. When the slot plate moves upward, the key moves downward in the keyway and the petal module group opens. When the slot plate moves downward, the key moves upward in the keyway and the petal module group closes.

[0012] Furthermore, the lower mold assembly includes a spool mold located below the ferrule mold assembly and a bottom mold located below the spool mold; the spool mold is provided with multiple placement areas for accommodating damping springs, and the placement areas are correspondingly arranged with the receiving holes; the demolding unit includes a demolding groove opened at the upper end of the bottom mold and a demolding frame slidably placed in the demolding groove. When demolding is required, the damping springs that have been injected with glue are pushed out from the spool mold by moving the demolding frame horizontally.

[0013] Furthermore, the middle of the placement area is an ejector hole with a through-hole structure, and the side of the placement area is provided with a receiving hole located on the sling mold; the upper end of the demolding frame is provided with an ejector rod. When demolding is required, the demolding frame moves horizontally and the ejector rod is located directly below the ejector hole. When demolding is not required, the ejector rod is offset from the ejector hole and is received in the receiving hole.

[0014] Furthermore, a tie rod is provided on the bottom mold, offset from the ejector rod, and a placement hole is provided on the drag mold, offset from the receiving hole and the placement area. The tie rod passes through the placement hole and extends upward to the inner wall of the petal mold body. The limiting unit includes a limiting platform located on the inner wall of the petal mold body and offset from the receiving hole. The diameter of the upper end of the tie rod is larger than the diameter of the lower end of the tie rod, so that the upper end of the tie rod forms a wide limiting block. During glue injection, the lower end of the wide limiting block is limited to the upper end of the limiting platform.

[0015] Furthermore, the limiting component also includes a stop plate provided on the wall of the receiving hole. The stop plate is located above the limiting plate. During glue injection, the outer sleeve of the damping spring abuts against the lower end of the stop plate. The upper and lower ends of the damping spring are respectively provided with an upper molded surface insert and a lower molded surface insert. The upper molded surface insert is placed on the upper part of the receiving hole, and the lower molded surface insert is placed on the upper part of the placement area.

[0016] Furthermore, the molding unit includes a molding frame that is movable and placed on the upper end of the mold. The molding frame is located outside and above the placement area. The molding frame is provided with multiple molding holes that match the placement area and are used to accommodate metal parts for receiving damping springs to be injected with glue. The molding frame is provided with opening and closing parts that can open or close the molding holes.

[0017] Furthermore, the mold assembly frame includes a side frame and an upper frame connected to the side frame. The side frame is located entirely outside the placement area, and the upper frame is located entirely above the placement area. The mold assembly hole is opened on the upper frame. The opening and closing components include a sliding groove opened at the inner end of the side frame, a toggle groove opened on the upper frame, and an opening and closing plate slidably connected in the sliding groove. The opening and closing plate is located between the placement area and the mold assembly hole. A toggle block located in the toggle groove is connected to the opening and closing plate. By adjusting the lateral position of the toggle block, the opening and closing plate can open or close the mold assembly hole.

[0018] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0019] 1. This invention can realize the automatic opening and closing of the petal mold assembly through the petal mold assembly and the opening and closing mold assembly, realize the automatic separation of the petal mold from the product, realize the misalignment and separation of the petal mold assembly from the drag mold and the surface insert, and facilitate the cleaning of the flash of the product, which can greatly improve production efficiency and product quality.

[0020] 2. This invention can realize automatic product molding through the molding unit and automatic product demolding through the demolding unit. It has a simple structure, strong practicality, and can further improve production efficiency and reduce production costs. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the glue injection vulcanization device provided in an embodiment of the present invention;

[0022] Figure 2 This is a partial structural diagram of the injection vulcanization apparatus provided according to an embodiment of the present invention. Figure 1 (Upper mold component not shown);

[0023] Figure 3 This is an exploded structural diagram of the injection vulcanizing device provided according to an embodiment of the present invention (the upper mold plate, damping spring, and part of the mold frame are not shown).

[0024] Figure 4 yes Figure 3 A magnified view of a section at point M;

[0025] Figure 5 This is a schematic diagram of the opening and closing mold assembly of the injection vulcanization apparatus provided according to an embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the mold body of the injection vulcanization device provided according to an embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of the drag mold structure of the injection vulcanization apparatus provided in an embodiment of the present invention;

[0028] Figure 8 This is an exploded structural diagram of the lower mold assembly of the injection vulcanizing device provided according to an embodiment of the present invention (when the demolding frame is not being dragged).

[0029] Figure 9 This is a schematic diagram of the demolding unit of the injection vulcanization apparatus provided according to an embodiment of the present invention (when the demolding frame is being dragged).

[0030] Figure 10 This is a schematic diagram of the molding unit of the injection vulcanization apparatus provided according to an embodiment of the present invention. Figure 1 ;

[0031] Figure 11This is a schematic diagram of the molding unit of the injection vulcanization apparatus provided according to an embodiment of the present invention. Figure 2 .

[0032] The reference numerals in the attached drawings include: upper mold assembly 1, lower mold assembly 2, petal mold assembly 3, injection channel 4, demolding unit 5, mold mounting unit 6, opening and closing mold assembly 7, petal mold body 8, receiving hole 9, key 10, groove plate 11, limiting step one 12, limiting step two 13, keyway 14, mold frame 15, drag mold 16, bottom mold 17, placement area 18, demolding groove 19, demolding frame 20, ejection hole 21, receiving hole 22, ejection rod 23, pull rod 24, placement hole 25, limiting platform 26, stop platform 27, upper molded surface insert 28, lower molded surface insert 29, mold mounting hole 30, side frame 31, upper frame 32, sliding groove 33, actuating groove 34, opening and closing plate 35, actuating block 36, upper template 37, mandrel 38, outer sleeve 39, demolding handle 40. Detailed Implementation

[0033] The appendix will be referenced below. Figure 1-11 Embodiments of the present invention are described below. In the following description, the same modules are denoted by the same reference numerals. Where the same reference numerals are used, their names and functions are also the same. Therefore, their detailed description will not be repeated.

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the following description is provided in conjunction with the appendix. Figure 1-11 The present invention will be further described in detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and do not constitute a limitation thereof.

[0035] A vulcanizing apparatus for a metal-rubber composite damping spring includes an upper mold assembly 1, a lower mold assembly 2, and a flap mold assembly 3 located between the upper mold assembly 1 and the lower mold assembly 2. The upper mold assembly 1 is provided with an injection channel 4, and the upper mold assembly 1 includes an upper template 37, on which the injection channel 4 is disposed. The lower mold assembly 2 includes a demolding unit 5 and a mold mounting unit 6. The mold mounting unit 6 is used to mount the metal parts of the damping spring to be injected, specifically the outer sleeve 39 of the damping spring to be injected, and the demolding unit 5 is used to remove the injected damping spring from the mold. The outer end of the flap mold assembly 3 is connected to an opening and closing mold assembly 7, which controls the opening and closing of the flap mold assembly 3. The flap mold assembly 3 is also provided with a limiting unit, which limits the overall vulcanizing apparatus, especially the lower mold assembly 2, the flap mold assembly 3, and the damping spring, thereby improving the stability of the processing.

[0036] The valve mold assembly 3 includes multiple sets of paired valve mold groups. Each valve mold group includes two valve mold bodies 8 that are symmetrically arranged. The inner ends of each valve mold body 8 are fitted with functional openings. The ends of the valve mold bodies 8 are provided with key 10. The opening and closing mold assembly 7 includes a groove plate 11 that is slidably connected to the key 10. The groove plate 11 has an inclined plate structure. The vertical movement of the groove plate 11 causes the valve mold bodies 8 in the valve mold group to open or close. Figure 3 Point B shows the open state of the valve body 8 in the valve assembly, and point A shows the closed state of the valve body 8. Figure 3 The diagram only illustrates the closed or open state of the valve modules. In actual operation, each valve module is either open or closed simultaneously.

[0037] like Figure 3 , Figure 4 As shown, the lower end of the slot plate 11 is provided with a limiting step 12, and the lower end of the petal mold body 8 is provided with a limiting step 2 13 located above the limiting step 12. The slot plate 11 is provided with a "figure-eight" keyway 14. The key 10 on the petal mold body 8 in each petal mold group is in a "figure-eight" shape that matches the keyway 14. A mold frame 15 is connected to the slot plate 11. The mold frame 15 drives the slot plate 11 to move vertically, so that the key 10 slides in the keyway 14. When the slot plate When the plate 11 moves upward, the key 10 moves downward in the keyway 14 and the petal module opens. When the plate 11 moves downward, the key 10 moves upward in the keyway 14 and the petal module closes. At the same time, when the key 10 moves downward in the keyway 14, that is, when it moves towards the opening section of the lower part of the "figure-eight" shape, the second limiting step 13 will abut against and limit the upper end of the first limiting step 12. The downward opening stroke of the petal module body 8 is limited by the abutment between the first limiting step 12 and the second limiting step 13.

[0038] The lower mold assembly 2 includes a drag mold 16 located below the flap mold assembly 3 and a bottom mold 17 located below the drag mold 16. The drag mold 16 is provided with multiple placement areas 18 for accommodating damping springs, and the placement areas 18 are correspondingly arranged with the receiving holes 9. The upper and lower ends of the damping spring are respectively provided with an upper molded surface insert 28 and a lower molded surface insert 29. The upper molded surface insert 28 is placed above the receiving hole 9, and the lower molded surface insert 29 is placed above the placement areas 18. The upper molded surface insert 28 and the lower molded surface insert 29 are designed to match the profile of the rubber body of the damping spring.

[0039] like Figures 7-9 As shown, the demolding unit 5 includes a demolding groove 19 formed at the upper end of the bottom mold 17 and a demolding frame 20 that is slidably placed in the demolding groove 19. When demolding is required, the vibration damping spring that has been filled with glue is pushed out from the sling mold 16 by moving the demolding frame 20 horizontally. The demolding frame 20 is provided with a demolding handle 40. By holding the demolding handle 40, the demolding frame 20 is dragged. Figure 9 This represents the state during vulcanization, specifically before the demolding frame 20 is pulled out. Figure 10This is the state in which the demolding frame 20 is pulled out during demolding. The center of the placement area 18 has an ejection hole 21 with a through-hole structure. The side of the placement area 18 has a receiving hole 22 located on the sling mold 16. The upper end of the demolding frame 20 is provided with an ejection rod 23. When demolding is required, in the demolding state, the demolding frame 20 is dragged so that the demolding frame 20 moves horizontally and the ejection rod 23 is located directly below the ejection hole 21. At this time, the sling mold 16 is lowered, and the ejection rod 23 can push out the processed damping spring. The ejection rod 23 is exactly against the lower end of the mandrel 38. When demolding is not required, the ejection rod 23 is offset from the ejection hole 21 and is received in the receiving hole 22 to avoid interference.

[0040] A tie rod 24 is offset from the ejector rod 23 on the bottom mold 17, and a placement hole 25 is offset from the receiving hole 22 and the placement area 18 on the drag mold 16. The tie rod 24 passes through the placement hole 25 and extends upward to the inner wall of the petal mold body 8. Figure 6 As shown, the limiting unit includes a limiting platform 26 located on the inner wall of the petal mold body 8 and offset from the receiving hole 9. The diameter of the upper end of the pull rod 24 is larger than the diameter of the lower end of the pull rod 24, so that the upper end of the pull rod 24 forms a wide limiting block. During glue injection, the lower end of the wide limiting block is limited to the upper end of the limiting platform 26. At this time, the entire lower mold assembly 2 and petal mold assembly 3 are pulled by the pull rod 24, so that the entire glue injection vulcanizing device is limited. At the same time, the limiting assembly also includes a stop platform 27 provided on the wall of the receiving hole 9. The stop platform 27 is located above the limiting platform 26. During glue injection, the outer sleeve of the damping spring abuts against the lower end of the stop platform 27, which can prevent the outer sleeve of the damping spring from moving during vulcanization, thereby improving the efficiency and quality of vulcanization.

[0041] like Figure 10 , Figure 11 As shown, the molding unit 6 includes a molding frame body that is movably placed on the upper end of the drag mold 16. The molding frame body is located outside and above the placement area 18. The molding frame body is provided with a plurality of molding holes 30 that match the placement area 18 for accommodating metal parts of the damping springs to be injected with glue. The metal outer sleeve 39 is mainly used to accommodate the damping springs. The molding frame body is provided with opening and closing parts that can open or close the molding holes 30.

[0042] The mold assembly frame includes a side frame 31 and an upper frame 32 connected to the side frame 31. The side frame 31 is located entirely outside the placement area 18, and the upper frame 32 is located entirely above the placement area 18. Mold assembly holes 30 are formed on the upper frame 32. Figure 10 , Figure 11As shown, the opening and closing component includes a sliding groove 33 formed at the inner end of the side frame 31, a toggle groove 34 formed on the upper frame 32, and an opening and closing plate 35 slidably connected in the sliding groove 33. The opening and closing plate 35 is located between the placement area 18 and the mold hole 30. The opening and closing plate 35 is set near the bottom end of the upper frame 32. A toggle block 36 located in the toggle groove 34 is connected to the opening and closing plate 35. By adjusting the lateral position of the toggle block 36, the opening and closing plate 35 can open or close the mold hole 30. Figure 11 In the X region, the opening and closing plate 35 is open, and the outer cover 39 has fallen onto the placement area 18. In the Y region, the opening and closing plate 35 is open, and the outer cover 39 has not fallen.

[0043] To clearly illustrate the structure of each component, some of the accompanying drawings show the state with the mandrel 38 and outer sleeve 39 installed, while others do not. The accompanying drawings are for reference only. The specific implementation method of the damping spring during molding, vulcanization, and demolding via the injection vulcanization device is as follows:

[0044] In use, first install the mandrel 38 into the ejector hole 21, then place the outer sleeve 39 into the mold mounting hole 30 of the upper frame 32, and pry open the opening and closing plate 35. The outer sleeve 39 will fall downwards onto the placement area 18 on the drag mold 16, and the mold mounting unit 6 will be removed. Alternatively, the outer sleeve 39 can be installed onto the placement area 18 first, and then the mandrel 38 can be installed into the ejector hole 21. Those skilled in the art can operate according to the actual situation. Then, place the drag mold 16 and the lower mold assembly 2 together below the petal mold assembly 3, move the opening and closing mold assembly 7, and the mold frame 15 will drive the groove plate 11 and the key 10 to move upwards. At this time, the petal mold body 8 will also move upwards, the petal mold assembly will close, and the glue injection operation will be performed.

[0045] After the glue injection is completed, move the mold opening and closing assembly 7. The mold frame 15 drives the groove plate 11 and the key 10 to move downwards. At this time, the petal mold body 8 also moves downwards, the petal mold assembly opens, and the finished vibration damping spring separated from the petal mold assembly. Pull the drag mold 16 together with the lower mold assembly 2 from under the petal mold assembly 3. Then lift the drag mold 16 from the bottom mold 17 and pull the demolding frame 20 to make it as follows. Figure 9 The demolding frame 20 moves within the demolding groove 19, causing the ejector rod 23 to move directly below the mandrel 38 and pull the mold 16 in the direction of the ejector rod 23. At this time, the ejector rod 23 pushes out the damping spring after the glue has been injected, completing the demolding operation.

[0046] Lift the mold 16 again, move the demolding frame 20 back to its original position in the demolding groove 19, lower the mold 16, and repeat the above steps to install the mold, inject adhesive, vulcanize, and demold again.

[0047] Although embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

[0048] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A metal-rubber composite damper spring injection vulcanization device, characterized by, The application relates to a mould assembly for injection-moulding a damping spring, which comprises an upper mould assembly (1), a lower mould assembly (2) and a petal mould assembly (3) between the upper mould assembly (1) and the lower mould assembly (2), wherein the upper mould assembly (1) is provided with a glue injection runner (4); the lower mould assembly (2) comprises a demoulding unit (5) and a mould loading unit (6), the metal part of the damping spring to be injected with glue is loaded into the mould through the mould loading unit (6), and the damping spring injected with glue is demoulded from the mould through the demoulding unit (5); the outer end of the petal mould assembly (3) is connected with an opening and closing mould assembly (7) and the opening and closing of the petal mould assembly (3) is controlled by the opening and closing mould assembly (7), and the petal mould assembly (3) is provided with a limiting unit; the petal mould assembly (3) comprises a plurality of groups of petal moulds, each group of petal moulds comprises petal mould bodies (8) which are oppositely and symmetrically arranged, and the inner end of each petal mould body (8) is matched with a containing hole (9) for containing the damping spring; the limiting unit is arranged on the hole wall of the petal mould body (8); the end of the petal mould body (8) is provided with a key (10), the opening and closing mould assembly (7) comprises a groove plate (11) which is slidably connected with the key (10), the petal mould bodies (8) in the petal mould are opened or closed through the vertical movement of the groove plate (11); the lower end of the groove plate (11) is provided with a limiting step one (12), the lower end of the petal mould body (8) is provided with a limiting step two (13) which is located above the limiting step one (12), and the downward opening stroke of the petal mould body (8) is limited through the abutment of the limiting step one (12) and the limiting step two (13); the groove plate (11) is provided with an "eight-shaped" key groove (14), the keys (10) on the petal mould bodies (8) in each group of petal moulds integrally present an "eight-shaped" matching with the key groove (14); the groove plate (11) is connected with a mould frame (15), the groove plate (11) is vertically moved through the mould frame (15) so that the keys (10) slide in the key groove (14), when the groove plate (11) moves upwards, the keys (10) move downwards in the key groove (14) and the petal mould is opened, and when the groove plate (11) moves downwards, the keys (10) move upwards in the key groove (14) and the petal mould is closed.

2. The device for injection molding and vulcanization of metal-rubber composite vibration absorbing springs according to claim 1, characterized in that The lower mould assembly (2) comprises a drag mould (16) below the petal mould assembly (3) and a bottom mould (17) below the drag mould (16); the drag mould (16) is provided with a plurality of placing areas (18) for containing the damping spring, and the placing areas (18) are correspondingly arranged with the containing holes (9); the demoulding unit (5) comprises a demoulding groove (19) opened on the upper end of the bottom mould (17) and a demoulding frame (20) slidably arranged in the demoulding groove (19), when demoulding is needed, the damping spring injected with glue is lifted out of the drag mould (16) through the horizontal movement of the demoulding frame (20).

3. The device for injection molding and vulcanization of metal-rubber composite vibration absorbing springs according to claim 2, characterized in that, The middle part of the placement area (18) is an ejection hole (21) in a through hole structure, and a containing hole (22) is arranged on the drag mold (16) on the side of the placement area (18); the demolding frame (20) is provided with an ejection rod (23) at the upper end, when demolding is needed, the demolding frame (20) moves horizontally and the ejection rod (23) is located directly below the ejection hole (21), when demolding is not needed, the ejection rod (23) is staggered with the ejection hole (21) and is contained in the containing hole (22).

4. The device for injection molding and vulcanization of metal-rubber composite vibration absorbing springs according to claim 3, characterized in that, The bottom mold (17) is provided with a pull rod (24) staggered with the ejection rod (23), the drag mold (16) is provided with a placement hole (25) staggered with the containing hole (22) and the placement area (18), the pull rod (24) is arranged in the placement hole (25) and extends upward to the inner wall of the valve mold body (8); the limiting unit includes a limiting table (26) arranged on the inner wall of the valve mold body (8) and staggered with the containing hole (9), and the diameter of the upper end of the pull rod (24) is larger than that of the lower end of the pull rod (24), so that the upper end of the pull rod (24) forms a wide limiting block, and the lower end of the wide limiting block is limited to the upper end of the limiting table (26) during glue injection.

5. The device for injection molding and vulcanization of metal-rubber composite vibration absorbing springs according to claim 4, characterized in that, The limiting assembly further includes a stop table (27) arranged on the hole wall of the containing hole (9), the stop table (27) is located above the limiting table (26), and the outer sleeve of the damping spring abuts against the lower end of the stop table (27) during glue injection; the upper and lower ends of the damping spring are respectively provided with an upper surface insert block (28) and a lower surface insert block (29), the upper surface insert block (28) is arranged on the upper part of the containing hole (9), and the lower surface insert block (29) is arranged on the upper part of the placement area (18).

6. The device for injection molding and vulcanization of metal-rubber composite vibration-damping springs according to claim 5, characterized in that, The mold loading unit (6) includes a movable mold loading frame body arranged on the upper end of the drag mold (16), the mold loading frame body is located outside and above the placement area (18), and a plurality of mold loading holes (30) for accommodating the metal parts of the damping spring to be injected are arranged on the mold loading frame body and matched with the placement area (18); the mold loading frame body is provided with an opening and closing member which can open or close the mold loading hole (30).

7. The device for injection molding and vulcanization of metal-rubber composite vibration damper springs according to claim 6, characterized in that The mold loading frame body includes a side frame body (31) and an upper frame body (32) connected to the side frame body (31), the side frame body (31) is located outside the placement area (18), the upper frame body (32) is located above the placement area (18), and the mold loading hole (30) is arranged on the upper frame body (32); the opening and closing member includes a sliding groove (33) arranged in the inner end of the side frame body (31), a pushing groove (34) arranged on the upper frame body (32), and an opening and closing plate (35) slidably connected in the sliding groove (33), the opening and closing plate (35) is located between the placement area (18) and the mold loading hole (30), the opening and closing plate (35) is connected with a pushing block (36) located in the pushing groove (34), and the opening and closing plate (35) is opened or closed by adjusting the transverse position of the pushing block (36).

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