Machining forming device suitable for automobile high-pressure oil pump sealing part

Abstract

The utility model relates to a machining forming device suitable for an automobile high-pressure oil pump sealing part. Comprising an upper die mechanism and a lower die mechanism located below the upper die mechanism, the upper die mechanism comprises a flanging punch and an upper ejector rod, wherein the upper ejector rod penetrates through the flanging punch, is in sliding fit with the flanging punch and is used for ejecting and pushing a workpiece to be machined. The lower die mechanism comprises a flanging female die, a first floating block, a second floating block and a positioning rod, wherein the first floating block and the second floating block are arranged in the flanging female die in a sliding mode, and the positioning rod is connected with the second floating block, penetrates through the first floating block and is suitable for being partially inserted into a workpiece to be machined. The second floating block is located on the side, back on to the upper die mechanism, of the first floating block. A first elastic piece suitable for deformation is further arranged at the bottom end, back to the upper die mechanism, of the first floating block, and a second elastic piece suitable for deformation is further arranged at the bottom end, back to the upper die mechanism, of the second floating block. According to the utility model, the precision of processed and formed products can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts processing, in particular to a processing and forming device suitable for automobile high-pressure oil pump sealing parts. Background Art

[0002] The main function of the sealing parts of the automobile high-pressure oil pump, such as the sealing cap, is to seal the opening end of the high-pressure oil pump to prevent the high-pressure fluid from leaking out when the engine is working. Figure 1 As shown, during the assembly of the sealing cap with the high-pressure oil pump, the small outer diameter part 100 of the overall sealing cap is press-fitted into the pump body through interference fit, and then laser welded to ensure sealing. The large outer diameter part 200 is press-fitted into the sealing ring, and at the same time, a plunger moves back and forth at high speed through the sealing ring. This high-speed moving plunger must move smoothly and without oil leakage, so the position accuracy of the product is very high. If the position accuracy is poor and eccentricity occurs, the plunger will cause excessive wear on the local position of the sealing ring, causing oil leakage in the oil pump and shortening its life.

[0003] The large outer diameter portion 200 of the sealing cap is formed by turning the opening edge of the small outer diameter portion 100 outward. For this purpose, a corresponding outward turning processing device is required. The processing device generally used in the prior art is as follows: Figure 2 As shown, it basically includes an upper die mechanism and a lower die mechanism. The upper die mechanism mainly includes a stripper plate 12, an upper ejector rod 14 and a flanging punch 13 used in conjunction with each other. The lower die mechanism mainly includes a lower push rod 212, a first floating block 29, a flanging die 26, a cushion block 211 and a lower ejector rod 218 used in conjunction with each other. Based on the external flanging processing device, the upper die mechanism moves downward, and the lower push rod 212 pushes up the stripper plate 12 of the upper die to expose the flanging punch 13. At this time, the semi-finished product is placed on the first floating block 29, and the upper die mechanism continues to move downward. The inner diameter of the flanging punch 13 is inserted into the outer diameter surface of the semi-finished workpiece. After positioning is completed, the upper die mechanism continues to move, and the semi-finished product enters the flanging die 26 to complete the flanging process. Figure 3 As shown. For the external flanging processing device, the inner diameter of the flanging punch 13 is used to limit the outer diameter of the product, but there will be a certain thickness difference and a certain roundness between the inner diameter and the outer diameter. At the same time, the flanging punch 13 used for positioning is installed on the upper mold mechanism. After the mold is assembled, there will be a certain cumulative error. In addition, the punch slide itself also has a certain gap. The three factors combined will cause the product's position to be unstable and fluctuate greatly. Therefore, the accuracy of the sealing cap formed by the overall processing is poor.

[0004] Therefore, in view of the problem of poor processing accuracy of the external flanging processing device generally used in the prior art, it is necessary to optimize its overall structure. Utility Model Content

[0005] The utility model aims to provide a processing and forming device suitable for automobile high-pressure oil pump sealing parts, so as to solve the technical problem of improving the precision of processed and formed products.

[0006] The processing and forming device of the utility model applicable to the sealing parts of the automobile high-pressure oil pump is realized as follows:

[0007] A processing and forming device suitable for automobile high-pressure oil pump sealing parts comprises: an upper mold mechanism used in conjunction with a lower mold mechanism located below the upper mold mechanism;

[0008] The upper die mechanism comprises a flanging punch and an upper ejector rod penetrating the flanging punch and slidingly cooperating with the flanging punch for pushing the workpiece to be processed;

[0009] The lower die mechanism includes a flanging die, a first floating block and a second floating block slidably arranged in the flanging die, and a positioning rod connected to the second floating block and penetrating the first floating block and suitable for partially inserting into the workpiece to be processed; wherein the second floating block is located on the side of the first floating block facing away from the upper die mechanism; the bottom end of the first floating block facing away from the upper die mechanism is also provided with a first elastic member suitable for deformation, and the bottom end of the second floating block facing away from the upper die mechanism is also provided with a second elastic member suitable for deformation.

[0010] In an optional embodiment of the present utility model, the upper mold mechanism also includes a third elastic member suitable for deformation provided at the end of the upper ejector rod facing away from the lower mold mechanism.

[0011] In an optional embodiment of the present invention, the upper die mechanism further comprises a stripping plate suitable for the flanging punch to pass through and slidably cooperates with the flanging punch.

[0012] In an optional embodiment of the present invention, the lower mold mechanism also includes a lower push rod for pushing the unloading plate.

[0013] In an optional embodiment of the present invention, a pin penetrating through the second floating block is further provided between the first floating block and the first elastic member.

[0014] In an optional embodiment of the present invention, a spring pad is provided between the ejector pin and the first elastic member.

[0015] In an optional embodiment of the present invention, a lower push rod is further provided between the second floating block and the second elastic member.

[0016] In an optional embodiment of the present utility model, a spring seat is provided between the lower push rod and the second elastic member; and

[0017] The spring seat is provided with an accommodating cavity for slidingly cooperating with the spring cushion block.

[0018] In an optional embodiment of the present invention, the first elastic member and the second elastic member are both column-type springs; and

[0019] The first elastic member is arranged in the inner hole of the second elastic member.

[0020] In an optional embodiment of the present invention, the elastic force of the first elastic member is smaller than the elastic force of the second elastic member.

[0021] Compared with the prior art, the embodiments of the utility model have the following beneficial effects: the utility model is suitable for the processing and forming device of automobile high-pressure oil pump sealing parts, and realizes direct positioning of the inner diameter of the workpiece to be processed through the positioning rod in the lower mold mechanism, and cooperates with the inner hole of the flanging punch to position the small outer diameter of the workpiece to be processed, without the need to convert the positioning reference, so that through the dual positioning of the inner diameter and outer diameter of the workpiece to be processed, the positioning accuracy of the workpiece to be processed during the processing can be effectively ensured, thereby improving the accuracy of the processed product.

[0022] In addition, for the lower mold mechanism, the first floating block and the second floating block and the first elastic member and the second elastic member are used in combination to achieve dual material withdrawal and floating functions, which greatly improves the feeding smoothness during the processing of the product to be processed and the unloading efficiency after processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 It shows a schematic diagram of the structure of the sealing parts of the automobile high-pressure oil pump after the outer flanging process is completed;

[0025] Figure 2 It shows a structural schematic diagram of an upper die mechanism and a lower die mechanism of an external flanging processing device in the prior art in an open die state;

[0026] Figure 3 It shows a schematic structural diagram of an upper die mechanism and a lower die mechanism of an external flanging processing device in the prior art in a mold-clamping state;

[0027] Figure 4 It shows a schematic structural diagram of an upper mold mechanism and a lower mold mechanism of a processing and forming device for automobile high-pressure oil pump sealing parts provided by Example 1 of the utility model in an open mold state;

[0028] Figure 5 The schematic diagram shows the structure of the upper die mechanism of the processing and forming device for automobile high-pressure oil pump sealing parts provided by the utility model embodiment 1, which moves downward relative to the lower die mechanism Figure 1 ;

[0029] Figure 6 The schematic diagram shows the structure of the upper die mechanism of the processing and forming device for automobile high-pressure oil pump sealing parts provided by the utility model embodiment 1, which moves downward relative to the lower die mechanism Figure 2 ;

[0030] Figure 7 The schematic diagram shows the structure of the upper mold mechanism and the lower mold mechanism of the processing and forming device for automobile high-pressure oil pump sealing parts provided by Example 1 of the utility model in the mold-clamping state.

[0031] In the figure: an upper die base 11, a discharge plate 12, a flanging punch 13, an upper ejector rod 14, a workpiece 15, a third elastic member 16, a lower die base 21, a pad 22, a fixing seat 23, a support plate 24, an assembly cavity 25, a flanging die 26, a die cavity 27, a positioning rod 28, a first floating block 29, a second floating block 210, a cushion block 211, a lower push rod 212, an elastic connecting member 213, a first elastic member 214, a second elastic member 215, an ejector pin 216, a spring cushion block 217, a lower ejector rod 218, a spring seat 219, and an accommodating cavity 220. DETAILED DESCRIPTION

[0032] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0033] Reference Figure 1 as well as Figures 4 to 7 As shown, this embodiment provides a processing and forming device suitable for automobile high-pressure oil pump sealing parts, including: an upper mold mechanism used in conjunction with a lower mold mechanism located below the upper mold mechanism. During the process of external flanging of the product to be processed, the upper mold mechanism moves toward the lower mold mechanism to achieve the mold closing operation, that is, the lower mold mechanism remains stationary.

[0034] Next, let's talk about the upper mold mechanism:

[0035] The upper die mechanism comprises an upper die base 11 and a stripper plate 12 movably connected to the upper die base 11, a flanging punch 13 fixedly connected to the upper die base 11, and an upper ejector rod 14 penetrating the flanging punch 13 and slidingly cooperating with the flanging punch 13 for pushing the workpiece 15 to be processed. An elastic connector 213 (not shown in the figure) is provided between the stripper plate 12 and the upper die base 11, so that the stripper plate 12 can move away from and together with respect to the upper die base 11. When the stripper plate 12 is subjected to a thrust force from the side facing away from the upper die base 11, the stripper plate 12 can move closer to the upper die base 11, and when the thrust force on the stripper plate 12 is removed, the stripper plate 12 moves away from the upper die base 11 under the action of the elastic connector 213, so that a certain longitudinal distance is maintained between the stripper plate 12 and the upper die base 11.

[0036] Furthermore, the flanging punch 13 penetrates the unloading plate 12, and a third elastic member 16 suitable for deformation is provided in the upper die base 11 and at the end of the upper ejector rod 14 facing away from the lower die mechanism. It should be noted that before the upper die mechanism and the lower die mechanism perform the mold closing operation, the end of the upper ejector rod 14 facing the lower die mechanism is slightly raised than the end of the flanging punch 13 facing the lower die mechanism, and the end of the upper ejector rod 14 facing the lower die mechanism is also slightly raised than the end of the writing plate facing the lower die mechanism, while the end of the flanging punch 13 facing the lower die mechanism is slightly recessed than the end of the writing plate facing the lower die mechanism. Under this structure, that is, during the mold closing operation of the upper die mechanism and the lower die mechanism, the upper ejector rod 14 is the first to contact the workpiece 15 to be processed.

[0037] Next, let's talk about the lower mold mechanism:

[0038] The lower die mechanism comprises a lower die base 21, and a pad 22, a fixing seat 23 and a support plate 24 connected to the lower die base 21 in sequence toward the upper die mechanism; wherein a through-connected assembly cavity 25 is provided between the fixing seat 23 and the support plate 24, wherein a flanging die 26 and a cushion block 211 are provided in the assembly cavity 25, wherein the cushion block 211 is provided on the side of the flanging die 26 facing away from the upper die mechanism, and a die cavity 27 for cooperating with the flanging punch 13 to punch the workpiece 15 to be processed is formed in the flanging die 26. A first floating block 29 and a second floating block 210 are slidably connected in the die cavity 27, and a positioning rod 28 connected to the second floating block 210 and penetrating the first floating block 29 and suitable for being partially inserted into the workpiece 15 to be processed is provided. When the upper die mechanism and the lower die mechanism are in the open die state, there is a certain longitudinal spacing between the first floating block 29 and the second floating block 210.

[0039] On the basis of the above structure, in order to meet the use requirements of the stripper plate 12, the lower die mechanism further includes a lower push rod 212 for pushing the stripper plate 12. The lower push rod 212 is movably connected with the support plate 24, and an elastic connector 213 penetrating the lower die base 21, the pad 22 and the fixing seat 23 is provided in the lower die base 21, which is used to realize the reset of the push rod relative to the support plate 24.

[0040] Furthermore, the second floating block 210 is located on the side of the first floating block 29 facing away from the upper mold mechanism; the bottom end of the first floating block 29 facing away from the upper mold mechanism is also provided with a first elastic member 214 suitable for deformation, and the bottom end of the second floating block 210 facing away from the upper mold mechanism is also provided with a second elastic member 215 suitable for deformation. In conjunction with the accompanying drawings, an optional implementation is given as an example, the first elastic member 214 and the second elastic member 215 are both columnar springs; and the first elastic member 214 is arranged in the inner hole of the second elastic member 215. When the first elastic member 214 and the second elastic member 215 are not deformed by pressure, a part of the first floating block 29 and the positioning rod 28 are both protruding from the end surface of the support plate 24 facing the upper mold mechanism; and the positioning rod 28 and the end surface of the first floating block 29 facing the upper mold mechanism can be flush, or there can be a certain height difference, which is not absolutely limited in this embodiment.

[0041] Based on the above situation, in conjunction with the accompanying drawings, a pin 216 penetrating the second floating block 210 is further provided between the first floating block 29 and the first elastic member 214. A spring pad 217 is provided between the pin 216 and the first elastic member 214. In addition, a lower ejector rod 218 is further provided between the second floating block 210 and the second elastic member 215. A spring seat 219 is provided between the lower ejector rod 218 and the second elastic member 215. A receiving cavity 220 for slidingly cooperating with the spring pad 217 is provided in the spring seat 219. Under this structure, the first elastic member 214 and the second elastic member 215 do not interfere with each other. It should be noted here that the pin 216 sequentially penetrates the spring seat 219, the pad 22, the pad 211 and the second floating block 210 and is connected to the first floating block 29. The lower ejector rod 218 sequentially penetrates the pad 22 and the pad 211 and is connected to the second floating block 210.

[0042] In addition, it is necessary to explain that, in this embodiment, the elastic force of the first elastic member 214 is smaller than the elastic force of the second elastic member 215. Under this design, when the first elastic member 214 and the second elastic member 215 are both deformed by pressure, the workpiece 15 will not be pressed to death on the first floating block 29, so that the positioning rod 28 is easily exposed, and the positioning match between the positioning rod 28 and the workpiece 15 is completed without scratching the inner diameter of the workpiece 15. At the same time, when the upper mold mechanism and the lower mold mechanism are opened, the processed workpiece 15 is floated to the feeding line. The second elastic member 215 is used for withdrawing the material after flanging. Under such a structure, the first floating block 29 and the second floating block 210 and the first elastic member 214 and the second elastic member 215 are used in combination to achieve a dual function of withdrawing and floating the material, which greatly improves the feeding smoothness during the processing of the product to be processed and the unloading efficiency after the processing is completed.

[0043] In summary, the specific use process of the processing and forming device for automobile high-pressure oil pump sealing parts of this embodiment is as follows:

[0044] The workpiece 15 to be processed is placed on the first floating block 29, and the upper mold mechanism moves toward the lower mold mechanism. The upper ejector rod 14 will first contact the workpiece 15 to be processed, and under the action of the upper ejector rod 14's pushing force on the workpiece 15 to be processed, the first elastic member 214 is compressed and deformed, and the first floating block 29 moves toward the second floating block 210, while the second floating block 210 does not move temporarily. At this time, the positioning rod 28 gradually enters the inner diameter cavity of the workpiece 15 to be processed due to the movement of the first floating block 29; as the upper mold mechanism continues to descend, when the lower ejector rod 212 hits the stripper plate 12, the stripper plate 12 moves toward the upper mold base 11. Because the positioning rod 28 enters the inner diameter cavity of the workpiece 15 to be processed, the upper ejector rod 14 is subjected to the pushing force of the workpiece 15 to be processed, so that the third elastic member 16 is compressed and deformed, thereby causing the upper ejector rod 14 to gradually retract into the flap punch until the first floating block 29 and the second floating block 210 are fitted together. Next, as the upper die mechanism moves downward mechanically, the unloading plate 12 gradually pushes the lower push rod 212 to the side of the lower die base 21. At this time, the second elastic member 215 is compressed and deformed, so that the spring seat 219, the first floating block 29 and the second floating block 210 all move in the direction away from the upper die base, thereby allowing the flanging punch to partially enter the die cavity 27 of the flanging die, thereby achieving the outer flanging processing of the workpiece 15 to be processed through the cooperation of the flanging punch and the flanging die.

[0045] When the workpiece 15 to be processed has completed the outer flanging processing, the upper mold mechanism gradually moves upward relative to the lower mold mechanism to perform a mold opening movement. At this time, during the resetting process of the second elastic member 215, the first floating block 29 and the second floating block 210 are pushed toward one side of the upper mold mechanism, so that the hole punch is gradually pushed away from the hole flanging die. During the resetting process of the second elastic member 215, the first elastic member 214 is also reset synchronously, so that the first floating block 29 can push the processed workpiece 15 away from the support plate 24 to enter the feeding line, and because the elastic force of the first elastic member 214 is smaller than the elastic force of the second elastic member 215, the processed workpiece 15 gradually leaves the hole flanging die and is pushed to the feeding line, that is, the material withdrawal and floating effects are realized in steps.

[0046] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are 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 in the protection scope of the present invention.

[0047] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0048] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0050] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0051] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

Claims

1. A processing and forming device suitable for automobile high-pressure oil pump sealing parts, characterized in that: include: An upper die mechanism used in conjunction with a lower die mechanism located below the upper die mechanism; wherein The upper die mechanism comprises a flanging punch and an upper ejector rod penetrating the flanging punch and slidingly cooperating with the flanging punch for pushing the workpiece to be processed; The lower die mechanism includes a flanging die, a first floating block and a second floating block slidably arranged in the flanging die, and a positioning rod connected to the second floating block and penetrating the first floating block and suitable for partially inserting into the workpiece to be processed; wherein the second floating block is located on the side of the first floating block facing away from the upper die mechanism; the bottom end of the first floating block facing away from the upper die mechanism is also provided with a first elastic member suitable for deformation, and the bottom end of the second floating block facing away from the upper die mechanism is also provided with a second elastic member suitable for deformation.

2. The processing and forming device for automobile high-pressure oil pump sealing parts according to claim 1 is characterized in that: The upper mold mechanism also includes a third elastic member suitable for deformation, which is provided at the end of the upper ejector rod facing away from the lower mold mechanism.

3. The processing and forming device for automobile high-pressure oil pump sealing parts according to claim 1 or 2, characterized in that: The upper die mechanism also includes a stripper plate suitable for the flanging punch to pass through and slidably cooperates with the flanging punch.

4. The processing and forming device for automobile high-pressure oil pump sealing parts according to claim 3 is characterized in that: The lower die mechanism also includes a lower push rod for pushing the unloading plate.

5. The processing and forming device for automobile high-pressure oil pump sealing parts according to claim 1 is characterized in that: A pin penetrating through the second floating block is also provided between the first floating block and the first elastic member.

6. The processing and forming device for automobile high-pressure oil pump sealing parts according to claim 5 is characterized in that: A spring pad is provided between the ejector pin and the first elastic member.

7. The processing and forming device for automobile high-pressure oil pump sealing parts according to claim 6 is characterized in that: A lower push rod is also provided between the second floating block and the second elastic member.

8. The processing and forming device for automobile high-pressure oil pump sealing parts according to claim 7 is characterized in that: A spring seat is provided between the lower push rod and the second elastic member; The spring seat is provided with an accommodating cavity for slidingly cooperating with the spring cushion block.

9. The processing and forming device for automobile high-pressure oil pump sealing parts according to claim 8 is characterized in that: The first elastic member and the second elastic member are both column-type springs; and The first elastic member is arranged in the inner hole of the second elastic member.

10. The processing and forming device for automobile high-pressure oil pump sealing parts according to any one of claims 5 to 8, characterized in that: The elastic force of the first elastic member is smaller than the elastic force of the second elastic member.

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