Egr valve screen gasket forming apparatus

Abstract

The application discloses an EGR valve filter screen gasket forming equipment, which comprises an upper die base and a lower die base, a cylinder I and a cylinder II which are respectively installed, and an upper die assembly which comprises a positioning rod which is inserted with the upper die base and a locking block which is slidably arranged at the outer ring of a closing cavity at the lower end of the upper die base and is slid along the radial direction of the upper die base; and a lower die assembly which comprises a supporting middle shaft which is vertically inserted with the middle part of the lower die base and a supporting outer ring which is sleeved with the supporting middle shaft, the bottom of the supporting outer ring is sealingly arranged and is connected with the output end of the cylinder II. The application extrudes and fixes the bent edge of the gasket body and stably locks the bent edge of the filter screen, the two can bear the impact force for a certain time under a certain pressure without separation after forming, and the correct selection of the filter screen material guarantees the service life of the EGR valve filter screen gasket to a certain extent.

Description

Technical Field

[0001] This invention relates to the field of filter pad molding technology, and in particular to an EGR valve filter pad molding device. Background Technology

[0002] The EGR valve is an electromechanical product installed on a diesel engine to control the amount of exhaust gas recirculated back to the intake system. It is typically located on the right side of the intake manifold, near the throttle body, and connected to a short metal pipe leading to the exhaust manifold. Its function is to control the amount of exhaust gas entering the intake manifold, allowing a certain amount of exhaust gas to flow into the intake manifold for recirculation. The EGR valve is a very important and critical component of the exhaust gas recirculation system.

[0003] A filter screen gasket for EGR valves, designed for both sealing and filtration / cleaning requirements at the inlet and outlet ends of EGR pipe fittings, has been developed. Figure 1 As shown, the gasket body 12 and the filter screen 13 are combined. The outer edge of the filter screen 13 needs to be inserted into the bent part of the inner ring of the gasket body 12 to achieve the splicing combination. The existing splicing combination method usually inserts the outer edge of the filter screen 13 through the plug structure, which results in the connection between the two not being tight enough. After the two are combined, they are prone to separation under the impact force of a certain pressure for a certain period of time, which affects the service life of the EGR valve filter screen gasket. Summary of the Invention

[0004] Based on this, it is necessary to provide an EGR valve filter pad forming device to address the aforementioned technical problems. When the upper mold base moves towards the lower mold base, the pad body and the filter screen are engaged. The outer support ring is inserted into the bottom opening of the bent edge in the middle of the pad body, and the bent edge of the filter screen, which is in contact with the inner wall of the outer support ring, is inserted for easy docking. Multiple locking blocks move towards the center of the upper mold base to press and fix the bent edge of the pad body and stably lock it with the bent edge of the filter screen, achieving a stable connection between the two. After forming, the two can withstand the impact force under certain pressure for a certain period of time without separating. The correct selection of the filter screen material ensures the service life of the EGR valve filter pad to a certain extent.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An EGR valve filter screen mat forming device includes an upper mold base and a lower mold base, and cylinder one and cylinder two respectively installed thereon, and further includes:

[0007] The upper mold assembly includes a positioning rod that is inserted into the upper mold base, and a locking block that is slidably disposed on the outer ring of the mold closing cavity at the lower end of the upper mold base. The locking block is slidably disposed along the radial direction of the upper mold base.

[0008] The lower die assembly comprises a supporting middle shaft vertically inserted with the middle part of the lower die base, and a supporting outer ring sleeved with the supporting middle shaft, the bottom of the supporting outer ring is sealingly arranged and connected with the output end of the air cylinder two.

[0009] As a preferred embodiment of the EGR valve filter screen pad forming equipment, the positioning rod is arranged through the lower die base, and the top of the positioning rod is connected with a disengagement gear rotatingly connected with the top of the upper die base through the engagement of the disengagement rack two, the other side of the disengagement gear is correspondingly provided with the disengagement rack one, and the disengagement rack one is arranged above the disengagement gear.

[0010] As a preferred embodiment of the EGR valve filter screen pad forming equipment, the locking blocks are uniformly arranged along the outer circle of the die closing cavity of the lower end of the upper die base, and the outer side of the locking block is in an arc structure.

[0011] As a preferred embodiment of the EGR valve filter screen pad forming equipment, the upper die base is rotatingly connected with a rotating ring, the rotating ring is horizontally provided with a locking sliding groove extending to the outer side of the upper die base at the corresponding position of the locking block, each locking sliding groove is slidingly connected with a guide rod, and the bottom of the guide rod is fixedly connected with the corresponding locking block.

[0012] As a preferred embodiment of the EGR valve filter screen pad forming equipment, the outer side of the rotating ring is provided with a pressing track, the pressing track is slidingly connected with a track rod, and the track rod is fixedly connected with the outer circle of the rotating ring.

[0013] As a preferred embodiment of the EGR valve filter screen pad forming equipment, the upper segment of the pressing track is vertically arranged, and the lower segment of the pressing track is obliquely arranged.

[0014] As a preferred embodiment of the EGR valve filter screen pad forming equipment, the top of the supporting outer ring is in an arc structure, the top of the supporting middle shaft is in a hemispherical structure, the bottom of the supporting outer ring is fixedly connected with a control cylinder, and the control cylinder is installed with the air cylinder two.

[0015] As a preferred embodiment of the EGR valve filter screen pad forming equipment, the outer circle of the supporting middle shaft is fixedly connected with a locking block, the locking block extends to the outer side of the control cylinder, one side of the locking block is provided with a locking plug slidingly inserted with the lower die base in the transverse direction, and the end of the locking plug away from the locking block is installed with a supporting spring.

[0016] As a preferred embodiment of the EGR valve filter screen gasket forming equipment, the locking block is provided with a plurality of V-shaped structures at one end close to the locking block.

[0017] As a preferred embodiment of the EGR valve filter screen gasket forming equipment, the locking block is provided with a plurality of V-shaped structures at one end close to the locking block.

[0018] Compared with the prior art, the EGR valve filter screen gasket forming equipment has the following beneficial effects:

[0019] The EGR valve filter screen gasket forming equipment provided by the application has the following advantages: the gasket body is placed in the lower end of the upper die seat, the filter screen is buckled on the top of the supporting middle shaft, the outer ring of the supporting outer ring is placed on the outer ring of the filter screen bending edge, the positioning rod is inserted into the mounting hole on the gasket body for limiting and fixing the gasket body, the lower end of the upper die seat is matched with the outer ring of the inner cavity bending edge of the gasket body for fixing the bending parts of the gasket body and the filter screen, the gasket body is buckled with the filter screen when the upper die seat moves downward to the lower die seat, the supporting outer ring is inserted into the bottom opening of the inner cavity bending edge of the gasket body, the filter screen bending edge matched with the inner wall of the supporting outer ring is inserted, the butt joint is facilitated, the two are tightly matched by the pressing of the upper die seat, the supporting middle shaft is in the original position when the supporting outer ring is pulled out downward, the filter screen is stably supported, the locking blocks are moved to the center of the upper die seat to extrude and fix the bending edge of the gasket body and stably lock the bending edge of the filter screen, the stable connection of the connecting parts of the two is realized, the two can withstand the impact force within a certain time under a certain pressure without being separated, the correct selection of the filter screen material ensures the service life of the EGR valve filter screen gasket to a certain extent.

[0020] The EGR valve filter screen gasket forming equipment provided by the application has the following advantages: when the cylinder drives the upper die seat to move downward, the track rod fixed with the outer ring of the rotating ring moves along the vertical sliding groove of the pressing track, the gasket body is connected and formed with the filter screen when the track rod moves to the bottom of the vertical sliding groove of the pressing track, the upper die seat continuously moves downward to drive the track rod to slide to the inclined section at the bottom of the pressing track, thereby driving the rotating ring to deflect, the bending edges of the gasket body and the filter screen are stably pressed and locked by the locking blocks while the gasket body and the filter screen are tightly connected. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the schemes in the application, the drawings needed in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0022] Figure 1 The gasket body and filter screen structure schematic diagram provided by the present application;

[0023] Figure 2 The overall structure schematic diagram provided by the present application;

[0024] Figure 3 The upper die assembly structure schematic diagram provided by the present application;

[0025] Figure 4 The rotating ring and locking block structure schematic diagram provided by the present application;

[0026] Figure 5 The rotating ring and locking sliding groove structure schematic diagram provided by the present application;

[0027] Figure 6 The lower die assembly partial sectional view provided by the present application.

[0028] The figure mark description is as follows:

[0029] 1, upper die seat; 2, lower die seat; 3, cylinder one; 4, cylinder two; 5, positioning rod; 6, disengaging gear; 7, disengaging rack one; 8, disengaging rack two; 9, pressing track; 10, rotating ring; 11, track rod; 12, gasket body; 13, filter screen; 14, locking block; 15, guide rod; 16, locking sliding groove; 17, support central shaft; 18, support outer edge ring; 19, locking block; 20, locking plug; 21, support spring; 22, control cylinder. DETAILED DESCRIPTION

[0030] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0031] As described in the background, the existing splicing combination mode is usually to insert the outer ring edge part of the filter screen 13, which leads to that the connection part of the two is not tight enough, and the impact force of the two combined under certain pressure for a certain time is easy to separate, which affects the service life of the EGR valve filter screen gasket.

[0032] In order to solve this technical problem, the present application provides an EGR valve filter screen gasket forming device, which is applied to the filter screen gasket forming technical field.

[0033] Specifically, please refer to Figures 2-6The application discloses an EGR valve filter pad forming device.

[0034] The upper die assembly comprises a positioning rod 5 inserted with the upper die seat 1, and locking blocks 14 slidingly arranged at the outer circle of the lower end die cavity of the upper die seat 1.

[0035] The lower die assembly comprises a supporting middle shaft 17 vertically inserted with the middle part of the lower die seat 2, and a supporting outer ring 18 sleeved with the supporting middle shaft 17, wherein the bottom of the supporting outer ring 18 is sealingly arranged and connected with the output end of the cylinder 4.

[0036] The EGR valve filter pad forming device provided by the application comprises the following steps: placing the gasket body 12 in the lower end die cavity of the upper die seat 1, buckling the filter 13 on the top of the supporting middle shaft 17, arranging the outer circle of the supporting outer ring 18 on the outer circle of the bent edge of the filter 13, inserting the positioning rod 5 into the mounting hole on the gasket body 12 for limiting and fixing the gasket body 12, and fixing the bent parts of the gasket body 12 and the filter 13 by the lower end die cavity of the upper die seat 1 and the outer circle of the bent edge of the inner cavity of the gasket body 12.

[0037] In order to make the personnel in the technical field better understand the application scheme, the technical scheme in the embodiment of the application will be clearly and completely described below in combination with the drawings.

[0038] It should be noted that the embodiments in the application and the features and technical solutions in the embodiments can be combined with each other without conflict.

[0039] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the following drawings. Embodiment

[0040] Please refer to Figures 2-4 An EGR valve filter pad forming device, comprising an upper die seat 1 and a lower die seat 2, and a cylinder 1 and a cylinder 2 installed respectively, by placing the gasket body 12 in the lower end of the upper die seat 1, and the filter screen 13 is buckled on the top of the supporting middle shaft 17, the outer ring of the supporting outer ring 18 is placed on the outer ring of the filter screen 13 bending edge, and the positioning rod 5 is inserted into the mounting hole on the gasket body 12 for limiting and fixing the gasket body 12.

[0041] In addition, please refer to Figures 2-4 The upper die assembly comprises a positioning rod 5 inserted with the upper die seat 1, and a locking block 14 slidingly arranged at the outer ring of the lower end of the upper die seat 1, the locking block 14 is slidingly arranged along the radial direction of the upper die seat 1, by moving the locking block 14, the outer ring of the inner cavity bending edge of the gasket body 12 can be fitted, and the bending edge of the gasket body 12 can be extruded, the locking block 14 is uniformly arranged along the outer ring of the lower end of the upper die seat 1, and the outer side of the locking block 14 is arc-shaped structure, the positioning rod 5 is inserted into the mounting hole on the gasket body 12 for limiting and fixing the gasket body 12, the positioning rod 5 penetrates the lower die seat 2, by moving the positioning rod 5 upwards, the positioning rod 5 can be separated from the mounting hole on the gasket body 12, which is convenient for separating the formed EGR valve filter screen 13 pad, facilitating blanking, and the top of the positioning rod 5 is connected with the disengagement gear 6 rotatingly connected with the top of the upper die seat 1 through the engagement of the disengagement rack two 8, the other side of the disengagement gear 6 is correspondingly provided with the disengagement rack one 7, and the disengagement rack one 7 is arranged above the disengagement gear 6, by moving the upper die seat 1 upwards to drive the disengagement gear 6 to approach the disengagement rack one 7 above, the disengagement gear 6 is engaged with the disengagement rack one 7 and rotates, thereby driving the disengagement rack two 8 connected with the positioning rod 5 to move upwards, so as to separate the positioning rod 5 from the mounting hole on the gasket body 12.

[0042] In addition, please refer to Figure 2 And Figure 6 The lower die assembly comprises a supporting middle shaft 17 vertically inserted with the middle part of the lower die seat 2, and a supporting outer ring 18 sleeved with the supporting middle shaft 17, the bottom of the supporting outer ring 18 is sealingly arranged and connected with the output end of the cylinder two 4, the supporting outer ring 18 is inserted into the bottom opening of the inner cavity bending edge of the gasket body 12, and the bending edge of the filter screen 13 fitted with the inner wall of the supporting outer ring 18 is inserted, which is convenient for butt joint, and the two are tightly fitted by the pressing of the upper die seat 1, when the supporting outer ring 18 is pulled out downward, the supporting middle shaft 17 is in the original position, which is convenient for stably supporting the filter screen 13. Embodiment

[0043] The EGR valve filter screen gasket forming device provided in Example 1 is further optimized, specifically, as shown in Figures 3-5 The upper die seat 1 is rotationally connected with a rotating ring 10, the rotating ring 10 is horizontally provided with a locking sliding groove 16 extending outward from the upper die seat 1 at a position corresponding to the locking block 14, each locking sliding groove 16 is slidably connected with a guide rod 15, and the bottom of the guide rod 15 is fixedly connected with the corresponding locking block 14. By rotating the rotating ring 10, the locking sliding groove 16 can be controlled to rotate along the axial direction of the rotating ring 10. Since the guide rod 15 is slidably connected with the locking sliding groove 16, the guide rod 15 and the locking block 14 can be driven to move along the radial direction of the upper die seat 1, so as to control the multiple locking blocks 14 to shrink inwardly or expand outwardly, facilitating flexible control. The inward shrinkage of the locking block 14 extrudes and fixes the bent edge of the gasket body 12, and stably locks the bent edge of the filter screen 13.

[0044] In addition, as shown in Figure 2 The outer side of the rotating ring 10 is provided with a pressing rail 9, the pressing rail 9 is slidably connected with a rail rod 11, the rail rod 11 is fixed with the outer ring of the rotating ring 10, the upper section of the pressing rail 9 is vertically arranged, and the lower section of the pressing rail 9 is obliquely arranged. When the cylinder one 3 drives the upper die seat 1 to move downward, the rail rod 11 fixed with the outer ring of the rotating ring 10 moves along the vertical sliding groove of the pressing rail 9, and when it moves to the bottom of the vertical sliding groove of the pressing rail 9, the gasket body 12 is connected and formed with the filter screen 13 at this time. The continuous downward movement of the upper die seat 1 drives the rail rod 11 to slide to the inclined section at the bottom of the pressing rail 9, thereby driving the rotating ring 10 to deflect. The gasket body 12 and the filter screen 13 can be tightly connected, and the bent edge of the gasket body 12 and the filter screen 13 can be stably and tightly locked by the locking block 14. Example

[0045] The EGR valve filter screen gasket forming device provided in Example 1 is further optimized, specifically, as shown in Figure 2 and Figure 6 The top of the support outer ring 18 is arc-shaped structure, which is better inserted into the bottom opening of the inner cavity bent edge of the gasket body 12, and the bent edge of the filter screen 13 which is in contact with the inner wall of the support outer ring 18 is inserted. The top of the support central shaft 17 is hemispherical structure, which is arranged in contact with the inner concave surface of the filter screen 13 to support the filter screen 13 and avoid deformation. The bottom of the support outer ring 18 is fixedly provided with a control cylinder 22, and the control cylinder 22 is installed with the cylinder two 4. When the cylinder two 4 moves upward, the control cylinder 22, the support outer ring 18 and the support central shaft 17 move upward at the same time. When the cylinder two 4 contracts, the support outer ring 18 moves downward first.

[0046] In addition, as shown in Figure 6As shown, the outer ring of the supporting middle shaft 17 is fixed with a locking block 19, which extends to the outside of the control cylinder 22, one side of the locking block 19 is provided with a locking plug 20 which is transversely slidingly inserted into the lower die seat 2, the end of the locking plug 20 away from the locking block 19 is provided with a supporting spring 21, the end of the locking plug 20 close to the locking block 19 is provided with a V-shaped structure, the locking block 19 is provided with a plurality of grooves which are matched with the end of the locking plug 20, when the control cylinder 22, the supporting outer ring 18 and the supporting middle shaft 17 are simultaneously moved up to the specified position, the locking plug 20 will be clamped with the locking block 19, when the filter screen 13 is inserted into the bottom opening of the middle bending edge of the gasket body 12, the supporting outer ring 18 needs to be withdrawn, so that the locking block 14 can be extruded and locked, at this time, the control cylinder 22 and the supporting outer ring 18 are driven by the cylinder two 4 to move downward, because the locking block 19 and the locking plug 20 are locked, the supporting middle shaft 17 remains in place to continuously support the filter screen 13, thereby improving the stability of the connection, after the gasket body 12 and the filter screen 13 are connected, the supporting outer ring 18 is continuously moved downward by the cylinder two 4, as shown in the structure, so that the control cylinder 22 presses the locking block 19 to separate the locking plug 20, so that the supporting middle shaft 17 can be synchronously moved downward, and the formed EGR valve filter screen 13 gasket is separated. Figure 6 As shown in the structure, so that the control cylinder 22 presses the locking block 19 to separate the locking plug 20, so that the supporting middle shaft 17 can be synchronously moved downward, and the formed EGR valve filter screen 13 gasket is separated.

[0047] The use process of the EGR valve filter screen gasket forming equipment provided by the application is as follows: the gasket body 12 is placed in the lower end of the upper die seat 1, the filter screen 13 is buckled on the top of the supporting middle shaft 17, the outer ring of the supporting outer ring 18 is placed on the outer ring of the bending edge of the filter screen 13, the positioning rod 5 is inserted into the mounting hole on the gasket body 12 for limiting and fixing the gasket body 12, and the lower end of the upper die seat 1 is matched with the outer ring of the inner cavity bending edge of the gasket body 12 for fixing the bending part of the gasket body 12 and the filter screen 13, when the upper die seat 1 moves to the lower die seat 2, the gasket body 12 is buckled with the filter screen 13, the supporting outer ring 18 is inserted into the bottom opening of the middle bending edge of the gasket body 12, and the bending edge of the filter screen 13 which is matched with the inner wall of the supporting outer ring 18 is inserted, so that the connection is facilitated, and the two are tightly matched by the pressing of the upper die seat 1, when the supporting outer ring 18 is withdrawn downward, the supporting middle shaft 17 remains in place, the locking block 14 moves to the center of the upper die seat 1 to extrude and fix the bending edge of the gasket body 12 and stably lock the bending edge of the filter screen 13, so that the connection part of the two is stably connected.

[0048] In this application, unless otherwise clearly indicated and limited, the terms "mounting", "connection", "connecting", "fixed", and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection or communication with each other; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0049] Obviously, the above-described embodiments are only a part of the embodiments of the present application, and are not all the embodiments. The preferred embodiments of the present application are shown in the drawings, but do not limit the patent scope of the present application. The present application can be realized in many different forms, and conversely, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing specific embodiments, or make equivalent substitutions for part of the technical features. Any equivalent structure made by using the content of the present application specification and drawings, directly or indirectly applied to other related technical fields, is also within the patent protection scope of the present application.

Claims

1. An EGR valve filter screen mat forming device, comprising an upper mold base (1) and a lower mold base (2), and cylinder one (3) and cylinder two (4) respectively mounted thereon, characterized in that, Also includes: The upper mold assembly includes a positioning rod (5) that is inserted into the upper mold base (1) and a locking block (14) that is slidably disposed on the outer ring of the mold cavity at the lower end of the upper mold base (1). The locking block (14) is slidably disposed along the radial direction of the upper mold base (1). The lower mold assembly includes a support central shaft (17) vertically inserted into the middle of the lower mold base (2) and a support outer ring (18) sleeved with the support central shaft (17). The bottom of the support outer ring (18) is sealed and connected to the output end of the cylinder (4). A rotating ring (10) is rotatably connected to the upper mold base (1). The rotating ring (10) and the locking block (14) are horizontally provided with locking grooves (16) extending to the outer side of the upper mold base (1). Each locking groove (16) is slidably connected with a guide rod (15). The bottom of the guide rod (15) is fixedly connected to the corresponding locking block (14). A pressing rail (9) is provided on the outer side of the rotating ring (10). A rail rod (11) is slidably connected in the pressing rail (9). The rail rod (11) is fixed to the outer ring of the rotating ring (10). The upper section of the pressing rail (9) is vertically arranged, and the lower section of the pressing rail (9) is inclined. The top of the outer support ring (18) is an arc-shaped structure, and the top of the central support shaft (17) is a hemispherical structure. A control cylinder (22) is fixed at the bottom of the outer support ring (18). The control cylinder (22) is installed with the second cylinder (4). A locking block (19) is fixed on the outer ring of the central support shaft (17). The locking block (19) extends to the outside of the control cylinder (22). A locking insert (20) is provided on one side of the locking block (19) and is laterally slidably inserted into the lower mold base (2). A support spring (21) is installed at the end of the locking insert (20) away from the locking block (19).

2. The EGR valve filter screen mat forming equipment according to claim 1, characterized in that, The positioning rod (5) is installed through the lower mold base (2), and the top of the positioning rod (5) is connected to the release gear (6) which is rotatably connected to the top of the upper mold base (1) through the release rack two (8). The other side of the release gear (6) is provided with a release rack one (7), and the release rack one (7) is located above the release gear (6).

3. The EGR valve filter screen mat forming equipment according to claim 1, characterized in that, The locking blocks (14) are evenly arranged along the outer ring of the mold cavity at the lower end of the upper mold base (1), and the outer side of the locking blocks (14) is an arc-shaped structure.

4. The EGR valve filter screen mat forming equipment according to claim 1, characterized in that, The locking plug (20) has a V-shaped structure at one end near the locking block (19), and the locking block (19) has a slot that matches the end of the locking plug (20).

5. The EGR valve filter screen mat forming equipment according to claim 4, characterized in that, The locking blocks (19) are provided in multiple positions along the outer ring of the support central axis (17).

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