Automobile engine cover plate machining center

Abstract

The invention relates to an automobile engine cover plate machining center, and belongs to the technical field of automobile part machining. The machining center comprises at least two machining devices arranged in parallel, a plurality of clamp bases, a clamp containing frame, a clamp conveying mechanism, a feeding workbench arranged on one side of the clamp conveying mechanism and a pressure maintaining module. The pressure maintaining module comprises a lower oil inlet module arranged on the clamp base and an upper oil inlet module used for conveying hydraulic oil to the lower oil inlet module, the lower oil inlet module and the upper oil inlet module are detachably matched, and a clamp oil way communicated with the lower oil inlet module is arranged in the clamp base. Clamping or loosening of the clamp seat is controlled through hydraulic pressure in the clamp oil way, and the oil inlet lower module is provided with an energy accumulator for maintaining the hydraulic pressure. The hydraulic clamping of the clamp seat is realized, and the clamp seat is separated from a hydraulic driving source and then is transported to processing equipment for processing.

Description

Technical Field

[0001] This application relates to the technical field of automotive parts processing, and particularly to a machining center for automotive engine covers. Background Art

[0002] As the core framework of the engine, the automotive engine housing plays a key role in supporting internal components, transmitting power, and sealing the combustion chamber. The material selection needs to take into account strength, heat dissipation, and lightweight requirements. Commonly used materials are cast iron and aluminum alloy.

[0003] After casting, the automotive engine needs to be further precision machined using processing equipment. The workpiece is usually fixed on a fixture base, and the fixture base is fixed on the processing equipment and then machined. The clamping member on the fixture base is hydraulically driven. However, the existing processing equipment has been optimized for the original factory functions (such as spindle load, cutting force) at the time of factory production. Forcibly installing additional components may cause mechanical interference or center of gravity shift, affecting dynamic balance. To address the above problems, this application provides a machining center that can clamp the fixture base and perform machining simultaneously. Summary of the Invention

[0004] In order to achieve hydraulic clamping of the fixture base and machine the clamped fixture base on the processing equipment, this application provides a machining center for automotive engine covers.

[0005] The machining center for automotive engine covers provided by this application adopts the following technical solutions: A machining center for automotive engine covers includes at least two parallel processing devices, a number of fixture bases, a fixture placement rack for storing the fixture bases, a fixture conveying mechanism disposed between the processing devices and the fixture placement rack and used for conveying the fixture bases, a loading workbench disposed on one side of the fixture conveying mechanism, and a pressure maintaining module. The pressure maintaining module includes an oil inlet lower module disposed on the fixture base and an oil inlet upper module for supplying hydraulic oil to the oil inlet lower module. The oil inlet lower module and the oil inlet upper module are detachably matched. The fixture base has a fixture oil path communicated with the oil inlet lower module. The clamping or loosening of the fixture base is controlled by the hydraulic pressure in the fixture oil path. The oil inlet lower module is provided with an accumulator for maintaining hydraulic pressure.

[0006] By adopting the above technical solution, when using the above machining center, the corresponding fixture base is moved from the fixture placement rack to the loading workbench according to the model of the workpiece, the oil inlet upper module and the oil inlet lower module are assembled, the workpiece is positioned and installed on the fixture base, and then hydraulic oil is supplied to the oil inlet upper module. The hydraulic oil sequentially passes through the oil inlet upper module and the oil inlet lower module and is finally delivered to the fixture oil circuit of the fixture base, so as to control the fixture base to perform a clamping operation. After that, the oil inlet upper module and the oil inlet lower module are removed, and the hydraulic pressure in the oil inlet lower module is maintained by the accumulator to keep the clamping state. The fixture conveying mechanism moves the fixture base with the workpiece to the processing equipment, and the workpiece is finely processed on the processing equipment. The above structural setting enables the processing equipment to process workpieces of different models, reduces the operation of replacing the hydraulic clamping device, and improves the processing efficiency.

[0007] Optionally, the fixture base includes a support base and a fixture plate. The oil inlet lower module is arranged on the top of the support base. The fixture plate is vertically fixed to the support base. The fixture plate is provided with a positioning clamp for pre-positioning the workpiece, and the fixture plate is provided with a plurality of clamping members for clamping the workpiece. The fixture oil circuit is in one-to-one correspondence and communication with the clamping members.

[0008] By adopting the above technical solution, the structural composition of the fixture base is disclosed. After the workpiece is moved to the fixture plate by a manipulator or a hoisting device, preliminary positioning is achieved through the positioning clamp. At this time, the oil inlet upper module and the oil inlet lower module are already connected, and hydraulic oil is supplied to drive the clamping members to perform a clamping operation to clamp and fix the workpiece on the fixture base.

[0009] Optionally, the fixture placement rack has a placement area for placing the fixture bases one by one. The placement areas are arranged in an array along the conveying direction of the fixture conveying mechanism. The fixture placement rack is provided with a placement seat for placing the support base in the placement area. The placement seat is provided with a support relief groove on the side facing the fixture conveying mechanism, and the support relief groove penetrates the top of the placement seat.

[0010] By adopting the above technical solution, several groups of fixture bases are placed in the placement area one by one. The placement area is parallel to the conveying direction of the fixture conveying mechanism, which is convenient for taking out the required model of fixture base. The setting of the support relief groove facilitates the fixture conveying mechanism to insert from the bottom of the support base and then lift the fixture base upward.

[0011] Optionally, the fixture conveying mechanism includes a conveying slide rail arranged along the arrangement direction of the processing equipment, a moving component slidably installed on the conveying slide rail, and a conveying driving member for driving the moving component to move; The moving component includes a moving frame slidably mounted on the conveying driving member, a lifting frame vertically mounted on the moving frame, and a moving support plate slidably mounted on the lifting frame and used for inserting into the support relief groove. The sliding directions of the moving frame and the moving support plate are parallel. A support slide rail slidably engaged with the moving support plate is provided at the top of the lifting frame. When the side wall of the moving frame abuts against the placing seat, the support slide rail is located in the support relief groove.

[0012] By adopting the above technical solution, the structural composition of the fixture conveying mechanism is disclosed. After the moving frame moves to the corresponding placing area, the moving frame is slid so that the moving frame abuts against the support seat. At this time, the support slide rail is located in the support relief groove. The moving support plate is driven so that the moving support plate corresponds to the bottom of the fixture seat. The moving frame is lifted upward so that the fixture seat is separated from the placing seat, and the fixture seat is moved above the moving frame. The above fixture conveying mechanism has a simple structure and is convenient to move.

[0013] Optionally, it further includes a loading workbench located at one end of the fixture conveying mechanism away from the processing equipment. The loading workbench includes a loading frame body, a loading seat provided on the loading frame body for positioning and placing the support seat, and an arc-shaped door rotatably mounted on the loading frame body. The loading seat has a loading relief groove for the moving support plate to slidably insert into.

[0014] By adopting the above technical solution, when the fixture conveying mechanism moves the fixture seat out of the placing seat and moves it to one side of the loading workbench, the fixture seat is moved towards the loading seat so that the fixture seat is positioned and placed on the loading seat, and then the workpiece is loaded. After the clamping is completed, the above moving operation is repeated to move the fixture seat to the processing equipment for processing.

[0015] Optionally, rotating grooves for slidably mounting the arc-shaped door are provided at both the top and bottom of the loading frame body. A positioning piece is provided on the opening side of the arc-shaped door, and a positioning groove for the positioning piece to abut against is provided on the loading frame body.

[0016] By adopting the above technical solution, the arc-shaped door can play a role in safety protection. Before the fixture seat moves to the loading seat, the arc-shaped door covers one side of the loading frame body. After the fixture seat and the loading seat are positioned and matched, the arc-shaped door is rotated so that the other side of the loading frame body is covered, which is convenient for the staff to load the workpiece. By the abutment of the positioning piece and the positioning groove, the rotation angle of the arc-shaped door is limited.

[0017] Optionally, a loading cross-frame for installing the upper oil inlet module is provided at the top of the loading frame body. The upper oil inlet module includes an upper die fixing plate fixed to the loading cross-frame, an upper die lifting driving member arranged on the upper die fixing plate, and an upper die main body connected to the output shaft of the upper die lifting driving member.

[0018] By adopting the above technical solution, the structural composition of the upper oil inlet module is disclosed. After the fixture seat is loaded onto the loading seat, the upper die lifting driving member is started, so that the upper die main body moves downward, enabling the upper die main body to be butt-connected and communicated with the upper oil inlet module. The above structure is simple and convenient to assemble.

[0019] Optionally, there are at least 10 independent upper oil inlet pipelines in the upper die main body. The at least 10 upper oil inlet pipelines are circumferentially spaced along the axis of the upper die main body. The lower oil inlet module has lower oil inlet pipelines corresponding to the upper oil inlet pipelines one by one.

[0020] By adopting the above technical solution, the upper oil inlet pipelines and the lower oil inlet pipelines correspond to each other one by one and are independent of each other, enabling the pressure maintaining module to conduct oil flows in different oil circuits for different types of fixture seats, improving the adaptability and clamping efficiency.

[0021] Optionally, a steel ball locking structure is arranged in the upper die main body. The lower oil inlet module is provided with a locking pull stud cooperating with the steel ball locking structure. The steel ball locking structure includes a fixed sleeve arranged in the upper die main body, a sliding sleeve slidably installed inside the fixed sleeve, multiple groups of locking steel balls arranged on the sliding sleeve, and a driving sleeve for driving the sliding sleeve to lift. The side wall of the pull stud is provided with a locking groove for the locking steel balls to slide inward, and the inner wall of the fixed sleeve is provided with an unlocking groove for the locking steel balls to slide outward; The upper die main body is further provided with a limiting sleeve at the outer edge of the fixed sleeve. The lower oil inlet module is provided with a limiting post inserted and cooperating with the limiting sleeve.

[0022] By adopting the above technical solution, under the combined action of the steel ball locking structure and the locking pull stud, the connection between the upper die main body and the lower oil inlet module assembly is stabilized, ensuring the stability of the pressure maintaining module during the transmission of hydraulic oil; under the combined action of the limiting sleeve and the limiting post, the docking of the two modules can be positioned, ensuring that the upper oil inlet pipelines and the lower oil inlet pipelines can correspond to each other one by one.

[0023] Optionally, an extension frame body is provided at the bottom of the upper die main body. A detection sensor for detecting the model of the fixture seat is arranged on the extension frame body. A nameplate corresponding to the detection sensor is arranged at the top of the lower oil inlet module.

[0024] By adopting the above technical solution, the detection sensor and the nameplate are arranged so that after the upper die main body and the oil inlet lower die module are docked, the detection sensor detects the workpiece information on the nameplate, transmits the information to the drive source, and conveys the corresponding oil circuit according to the workpiece information.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: By arranging the pressure-holding module, without affecting the structure of the existing processing equipment, the fixture seat that has clamped the workpiece can be conveyed to the processing equipment for processing, improving the processing efficiency of the workpiece. At the same time, the arrangement of multiple oil circuits in the pressure-holding module can perform different clamping operations according to different products, with high adaptability; By arranging the steel ball locking structure, the connection strength after the upper die main body and the oil inlet lower die module are docked can be improved, ensuring the stability of hydraulic transmission; By arranging the fixture conveying mechanism, the moving efficiency of the fixture between the fixture placement rack, the feeding workbench and the processing equipment is relatively high, improving the overall working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is the overall structural schematic diagram of the embodiment of the present application.

[0027] Figure 2 is the structural schematic diagram of the processing equipment and the fixture placement rack of the embodiment of the present application.

[0028] Figure 3 is the structural schematic diagram of the fixture seat of the embodiment of the present application.

[0029] Figure 4 is the structural schematic diagram of the fixture conveying mechanism of the embodiment of the present application.

[0030] Figure 5 is the structural schematic diagram of the feeding workbench of the embodiment of the present application.

[0031] Figure 6 is the structural schematic diagram of the pressure-holding module of the embodiment of the present application.

[0032] Figure 7 is the sectional schematic diagram after the pressure-holding module is assembled in the embodiment of the present application.

[0033] Figure 8 is Figure 7 the partial enlarged schematic diagram at A in

[0034] Description of the reference numerals: 1, processing equipment; 11, workbench; 12, processing seat; 2, fixture seat; 21, support seat; 22, fixture plate; 221, positioning clamp; 222, clamping member; 3, fixture placement rack; 31, placement area; 32, placement seat; 321, placement relief groove; 4, fixture conveying mechanism; 41, conveying slide rail; 42, moving assembly; 421, moving frame body; 422, lifting frame body; 423, moving support plate; 424, lifting driving member; 425, support slide rail; 43, conveying driving member; 431, conveying screw; 5, loading workbench; 51, loading frame body; 511, first through hole; 512, second through hole; 513, rotating groove; 514, positioning groove; 52, loading seat; 521, loading relief groove; 53, arc-shaped door body; 531, positioning piece; 6, oil inlet upper die module; 61, loading cross frame; 62, upper die fixing plate; 63, upper die lifting driving member; 64, upper die main body; 641, oil inlet upper pipeline; 642, driving chamber; 643, limiting sleeve; 644, connecting pipeline; 65, fixing sleeve; 651, unlocking groove; 66, sliding sleeve; 661, locking jack; 662, lifting ring; 663, disc spring; 664, fixing ring; 67, locking steel ball; 68, driving sleeve; 69, extending frame body; 691, detection sensor; 7, oil inlet lower die module; 71, oil inlet lower pipeline; 72, accumulator; 73, locking rivet; 731, locking groove; 74, limiting post; 75, nameplate. Detailed implementation manners

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These 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. Since the disclosed embodiments of the present invention can be arranged in different directions, these terms indicating directions should only be regarded as illustrative and not restrictive. For example, "upper" and "lower" are not necessarily limited to the directions opposite to or consistent with the direction of gravity. In addition, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0036] The following is a further detailed description of the present application in conjunction with the attached Figures 1-8 drawings.

[0037] The embodiment of the present application discloses a processing center for an automotive engine cover.

[0038] Refer to Figure 1, An automotive engine cover processing center, comprising a processing device 1, a fixture base 2, a fixture placement rack 3, a fixture conveying mechanism 4, a loading workbench 5, and a pressure maintaining module.

[0039] Referring to Figure 2 and Figure 3 , the processing device 1 is a high-precision processing machine tool in the prior art, and its structure and principle will not be described in this application. In this embodiment, a total of three groups of processing devices 1 are provided in the processing center, and the three groups of processing devices 1 are arranged in parallel at intervals. Among them, a workbench 11 is rotatably installed on the processing device 1, and two processing seats 12 for placing the fixture base 2 are symmetrically arranged on the workbench 11 along its rotation axis.

[0040] The fixture base 2 is used for loading and clamping the workpiece. The fixture base 2 includes a support base 21 and a fixture plate 22. The cross-section of the support base 21 in the vertical direction is U-shaped, and the fixture plate 22 is vertically fixed on the support base 21. There are slots on the surface of the fixture plate 22 for the workpiece to be inserted, and a positioning clip 221 and a clamping member 222 are arranged on the outer edge of the slot of the fixture plate 22. The positioning clip 221 is rotatably installed on the fixture plate 22, and the positioning clip 221 has a positioning ring that cooperates with the workpiece for insertion. The clamping member 222 is clamped and relaxed by hydraulic pressure, and there is a fixture oil circuit in the fixture base 2 that communicates with the clamping member 222. When the workpiece is arranged in the fixed slot by a hoisting device or a manipulator, first manually rotate the positioning clip 221 to achieve preliminary positioning, and then lock the clamping member 222 by hydraulic drive.

[0041] The fixture placement rack 3 is used for the unified placement of multiple fixture bases 2. The fixture placement rack 3 has a placement area 31 for placing the fixture bases 2, and the placement area 31 is arranged in an array along the discharging direction of the processing device 1. A placement seat 32 for placing the support base 21 is fixedly installed in the placement area 31. In this embodiment, the fixture placement rack 3 can simultaneously place twenty-four groups of fixture bases 2 of different models.

[0042] Referring to Figure 2 and Figure 4 , the fixture conveying mechanism 4 is located between the processing device 1 and the fixture placement rack 3 and is used for the movement and transportation of the fixture base 2. The conveying direction of the fixture conveying mechanism 4 is parallel to the arrangement direction of the processing device 1. Among them, the loading workbench 5 and the processing device 1 are on the same side and are respectively located at both ends of the fixture conveying mechanism 4. Through the fixture conveying mechanism 4, the fixture base 2 is moved from the fixture placement rack 3 to the loading workbench 5 for workpiece loading, and then moved from the loading workbench 5 to the processing device 1 for processing. After the processing is completed, it is transported back to the loading workbench 5 for workpiece unloading.

[0043] The fixture conveying mechanism 4 includes a conveying slide rail 41, a moving component 42 slidably mounted on the conveying slide rail 41, and a conveying driving member 43 for driving the movement of the moving component 42. The conveying driving member 43 is a servo motor, and a conveying screw 431 is fixed to its output shaft. The conveying screw 431 is in threaded cooperation with the moving component 42, so that after the conveying driving member 43 is started, the moving component 42 can be driven to move horizontally on the conveying slide rail 41.

[0044] The moving component 42 includes a moving frame body 421 slidably mounted on the conveying driving member 43, a lifting frame body 422 vertically mounted on the moving frame body 421, and a moving support plate 423 slidably mounted on the lifting frame body 422. A moving driving block (not marked in the figure) in threaded cooperation with the conveying screw 431 is provided at the bottom of the moving component 42. The moving frame body 421 is slidably mounted on the moving driving block. Both the moving frame body 421 and the moving support plate 423 adopt the sliding driving mode of a motor screw, and the sliding direction is opposite to the sliding direction of the moving driving block 432.

[0045] A lifting driving member 424 for driving the lifting of the lifting frame body 422 is provided on the moving frame body 421. In this embodiment, the lifting driving member 424 is a chain lifter, and the lifting driving block of the chain lifter is fixed to the lifting frame body 422. Two groups of support slide rails 425 slidably engaged with the moving support plate 423 are fixed to the top of the lifting frame body 422. The two ends of the support slide rails 425 extend out of the opposite sides of the lifting frame body 422. A placing relief groove 321 for horizontally inserting the moving support plate 423 is formed at the bottom of the placing seat 32. Therefore, the distance between the two groups of support slide rails 425 is smaller than the horizontal width of the placing relief groove 321.

[0046] When transferring the fixture seat 2, the moving frame body 421 moves to the corresponding placing area 31 under the action of the moving driving block 432, and then the moving frame body 421 is horizontally moved so that the support slide rails 425 are inserted into the placing relief groove 321. The moving support plate 423 is driven so that the moving support plate 423 corresponds to the bottom of the fixture seat 2. The lifting frame body 422 is lifted upward so that the support of the fixture seat 2 is switched from the placing seat 32 to the moving support plate 423. The moving support plate 423 is driven again so that the fixture seat 2 moves from one side of the fixture conveying mechanism 4 to the other side.

[0047] Refer to Figure 5The loading workbench 5 is located on the side of the conveying slide 41 away from the processing equipment 1. The loading workbench 5 includes a loading frame 51, a loading seat 52 arranged in the loading frame 51, and an arc-shaped door body 53 rotatably installed on the loading frame 51. The loading frame 51 is a vertically arranged column as a whole, and through holes are opened on its two opposite side walls. The side of the two through holes close to the conveying slide 41 is defined as the first through hole 511, and the other through hole is defined as the second through hole 512. The second through hole 512 is used for loading workpieces, and the first through hole 511 is used for loading the fixture seat 2. The arc-shaped door body 53 is a semicircular door body, which is used to cover a through hole of the loading frame 51. The top and bottom of the inner side of the loading frame 51 are provided with a rotating groove 513 for the arc-shaped door body 53 to slide. The arc-shaped door body 53 is further provided with a positioning piece 531 on one end surface of the opening, and the loading frame body 51 is provided with a positioning groove 514 for the positioning piece 531 to abut against.

[0048] When the positioning piece 531 and the positioning groove 514 are matched, the arc door body 53 covers the second through hole 512, and the first through hole 511 is in a connected state. The arc door body 53 is rotated in the opposite direction, so that the first through hole 511 is covered and the second through hole 512 is in a connected state. The loading rack body 51 is equipped with a pressure sensor in the positioning groove 514 to detect whether the arc door body 53 is completely closed.

[0049] The loading seat 52 and the placement seat 32 have the same overall structure, and the bottom of the loading seat 52 is provided with a loading clearance groove 521 for the movable support plate 423 to be inserted into.

[0050] Reference Figure 6 and Figure 7 The pressure-maintaining die set includes an oil-inlet upper die set 6 fixed on the upper material frame 51 and an oil-inlet lower die set 7 installed on the top of each set of fixture seats 2. A loading cross frame 61 for fixing the oil-inlet upper die set 6 is installed above the loading cross frame 61. The oil-inlet upper die set 6 includes an upper die fixing plate 62 fixed to the loading cross frame 61, an upper die lifting drive member 63 arranged on the top of the upper die fixing plate 62, and an upper die main body 64 located at the bottom of the upper die fixing plate 62. The upper die lifting drive member 63 is a vertically arranged electric cylinder, and its output shaft passes through the upper die fixing plate 62 and is fixedly connected to the upper die main body 64.

[0051] The upper mold body 64 is a circular body as a whole, and has at least 10 independent upper oil inlet pipelines 641 inside. In this embodiment, the upper mold body 64 has twelve upper oil inlet pipelines 641, and the twelve upper oil inlet pipelines 641 are evenly spaced along the circumferential axis of the upper mold body 64. The outer side of the upper mold body 64 is connected to a connecting pipeline 644 connecting the input end of the upper oil inlet pipeline 641 and the hydraulic drive source, and the output end of the upper oil inlet pipeline 641 is located at the bottom end surface of the upper mold body 64.

[0052] The lower oil inlet module 7 is provided with twelve lower oil inlet pipelines 71. The input ends of the lower oil inlet pipelines 71 are located at the top end face and correspond to the upper oil inlet pipelines 641 one by one. The output ends of the lower oil inlet pipelines 71 are in communication with the clamping oil circuit of the fixture base 2. After the fixture base 2 is loaded onto the loading base 52, the upper die lifting driving member 63 drives the upper die body 64 to move downward, so that the upper die body 64 is in butt connection and communication with the lower oil inlet module 7. The hydraulic driving member conveys hydraulic oil, and the hydraulic oil passes through the upper oil inlet pipeline 641, the lower oil inlet pipeline 71 and the fixture pipeline, so that the clamping member 222 performs a clamping operation. In this application, there are twelve hydraulic oil circuits. The hydraulic driving source selects the pipelines that need to convey hydraulic oil according to the information preset by the control system, and performs different clamping actions on different fixture bases 2. Among them, four groups of accumulators 72 are further installed at the bottom of the lower oil inlet module 7, so that after the upper die body 64 and the lower oil inlet module 7 are removed, the lower oil inlet pipeline 71 and the fixture oil circuit can still maintain hydraulic pressure.

[0053] Referring to Figure 7 and Figure 8 , in order to improve the connection stability between the upper die body 64 and the lower oil inlet module 7, a steel ball locking structure is arranged in the upper die body 64, and the lower oil inlet module 7 is provided with a locking pull stud 73 that cooperates with the steel ball locking structure for locking.

[0054] The steel ball locking structure includes a fixed sleeve 65 arranged in the upper die body 64, a sliding sleeve 66 slidably installed in the inner hole of the fixed sleeve 65, multiple groups of locking steel balls 67 arranged on the sliding sleeve 66, and a driving sleeve 68 for driving the sliding sleeve 66 to lift.

[0055] The fixed sleeve 65 and the upper die body 64 are coaxially arranged. The bottom end face of the upper die body 64 has a through hole corresponding to the inner hole of the fixed sleeve 65, so that the locking pull stud 73 can be inserted into the fixed sleeve 65. The sliding sleeve 66 is located in the inner hole of the fixed sleeve 65 and has a locking jack 661 for the locking pull stud 73 to insert. The locking steel balls 67 are arranged at intervals along the axis of the locking jack 661 on the sliding sleeve 66, and multiple locking steel balls 67 can perform radial sliding toward the axis of the locking jack 661. The side wall of the locking pull stud 73 has a locking groove 731 for the locking steel balls 67 to slide, and the inner hole wall of the fixed sleeve 65 has an unlocking groove 651 for the locking steel balls 67 to slide.

[0056] The sliding sleeve 66 is provided with a lifting ring 662 at the end away from the locking jack 661. A fixed ring 664 corresponding to the lifting ring 662 is sleeved outside the fixed sleeve 65. A disc spring 663 is arranged between the lifting ring 662 and the fixed ring 664. The driving sleeve 68 is sleeved on the outside of the lifting ring 662 of the sliding sleeve 66, so that when the driving sleeve 68 slides along the axis, it can drive the lifting ring 662 to move synchronously, so that the locking steel balls 67 on the sliding sleeve 66 move to the unlocking groove 651, facilitating the insertion and unlocking of the locking pull stud 73.

[0057] Inside the upper die body 64, there is a driving chamber 642 for the driving sleeve 68 to slide. The top of the driving sleeve 68 and the driving chamber 642 form a sealed chamber for compressed gas to enter. The upper die body 64 is externally connected to a pneumatic source communicating with the sealed chamber. Among them, the fixing method of the processing seat 12 and the fixture seat 2 is the same as that of the upper die body 64 and the oil inlet lower module 7.

[0058] Combined with Figure 6 , on the relative two sides of the locking stud 73 of the oil inlet lower module 7, there are also limit posts 74. The upper die body 64 has a limit sleeve 643 for the limit posts 74 to insert, which is used to improve the connection accuracy of each group of oil circuits. On the outer side wall of the upper die body 64, there is also an L-shaped extension frame 69. Horizontally installed on the extension frame 69 is a detection sensor 691 for detecting the model of the fixture seat 2. Vertically installed on the oil inlet lower module 7 is a nameplate 75. After the upper die body 64 and the oil inlet lower module 7 are fixed, the detection sensor 691 and the nameplate 75 correspond to each other. The detection sensor 691 detects the model of the fixture seat 2 and transmits the signal to the hydraulic drive source to perform a preset clamping operation.

[0059] The implementation principle of an automotive engine cover processing center according to an embodiment of the present application is as follows: The fixture conveying mechanism 4 feeds the corresponding fixture seat 2 from the fixture placement rack 3 to the loading workbench 5. On the loading workbench 5, the oil inlet upper module 6 and the oil inlet lower module 7 are plugged and fixed, and the twelve oil circuits are connected one by one. The workpiece is moved to the fixture plate 22 under the action of a manipulator or a hoisting device, and then the hydraulic drive source is started to make the clamping member 222 perform a clamping operation; the fixture seat 2 with the workpiece is moved to the processing device 1 for fine machining. After the fine machining is completed, it returns to the loading workbench 5 again through the fixture conveying mechanism 4. The upper die body 64 and the oil inlet lower module 7 are reconnected, and after the oil circuits are connected, the clamping member 222 is relaxed, and the workpiece is unloaded to load and clamp the next workpiece.

[0060] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An automobile engine cover processing center, characterized in that: The invention comprises at least two processing equipment (1) arranged in parallel, a plurality of fixture seats (2), a fixture placement rack (3) for storing the fixture seats (2), a fixture conveying mechanism (4) arranged between the processing equipment (1) and the fixture placement rack (3) and used for conveying the fixture seats (2), a loading workbench (5) arranged on one side of the fixture conveying mechanism (4), and a pressure-maintaining die set, wherein the pressure-maintaining die set comprises an oil-inlet lower die set (7) arranged on the fixture seat (2) and an oil-inlet upper die set (6) for conveying hydraulic oil to the oil-inlet lower die set (7), the oil-inlet lower die set (7) and the oil-inlet upper die set (6) being detachably matched, the fixture seat (2) having a fixture oil circuit in communication with the oil-inlet lower die set (7), the clamping or loosening of the fixture seat (2) being controlled by the hydraulic pressure in the fixture oil circuit, and the oil-inlet lower die set (7) being provided with an accumulator (72) for maintaining the hydraulic pressure.

2. The automobile engine cover processing center according to claim 1, characterized in that: The fixture seat (2) comprises a support seat (21) and a fixture plate (22); the oil inlet lower die set (7) is arranged on the top of the support seat (21); the fixture plate (22) is vertically fixed to the support seat (21); a positioning clamp (221) for pre-positioning a workpiece is arranged on the fixture plate (22); a plurality of clamping members (222) for clamping the workpiece are arranged on the fixture plate (22); and the fixture oil circuit is connected to the clamping members (222) in a one-to-one correspondence.

3. The automobile engine cover processing center according to claim 2, characterized in that: The fixture placement rack (3) has a placement area (31) for placing the fixture seats (2) one by one, and the placement areas (31) are arranged in an array along the conveying direction of the fixture conveying mechanism (4). The fixture placement rack (3) is provided with a placement seat (32) for placing the support seat (21) in the placement area (31), and the placement seat (32) is provided with a placement clearance groove (321) on one side facing the fixture conveying mechanism (4), and the placement clearance groove (321) runs through the top of the placement seat (32).

4. The automobile engine cover processing center according to claim 3, characterized in that: The fixture conveying mechanism (4) comprises a conveying slide rail (41) arranged along the arrangement direction of the processing equipment (1), a moving component (42) slidably mounted on the conveying slide rail (41), and a conveying driving member (43) driving the moving component (42) to move; The moving assembly (42) comprises a moving frame (421) slidably mounted on the conveying drive member (43), a lifting frame (422) lifted and mounted on the moving frame (421), and a moving support plate (423) slidably mounted on the lifting frame (422) and used for inserting into the placement clearance groove (321). The sliding directions of the moving frame (421) and the moving support plate (423) are parallel. A supporting slide rail (425) slidably matched with the moving support plate (423) is arranged on the top of the lifting frame (422). When the side wall of the moving frame (421) abuts against the placement seat (32), the supporting slide rail (425) is located in the placement clearance groove (321).

5. The automobile engine cover processing center according to claim 4, characterized in that: The invention also comprises a loading workbench (5), wherein the loading workbench (5) is located at one end of the fixture conveying mechanism (4) away from the processing equipment (1), and the loading workbench (5) comprises a loading frame (51), a loading seat (52) arranged on the loading frame (51) and for positioning the support seat (21), and an arc-shaped door body (53) rotatably mounted on the loading frame (51), and the loading seat (52) has a loading clearance groove (521) for the movable support plate (423) to slide and insert.

6. The automobile engine cover processing center according to claim 5, characterized in that: The top and bottom of the loading rack (51) are both provided with rotating grooves (513) for the sliding installation of the arc-shaped door body (53), a positioning piece (531) is provided on one side of the opening of the arc-shaped door body (53), and the loading rack (51) is provided with a positioning groove (514) for the positioning piece (531) to abut against.

7. The automobile engine cover processing center according to claim 5, characterized in that: A loading cross frame (61) for mounting the oil inlet upper mold assembly (6) is arranged on the top of the loading frame body (51); the oil inlet upper mold assembly (6) comprises an upper mold fixing plate (62) fixed to the loading cross frame (61), an upper mold lifting drive member (63) arranged on the upper mold fixing plate (62), and an upper mold body (64) connected to the output shaft of the upper mold lifting drive member (63).

8. The automobile engine cover processing center according to claim 7, characterized in that: The upper mold body (64) has at least 10 mutually independent upper oil inlet pipelines (641), and the at least 10 upper oil inlet pipelines (641) are arranged at intervals along the circumferential axis of the upper mold body (64), and the lower oil inlet mold assembly (7) has lower oil inlet pipelines (71) corresponding one-to-one to the upper oil inlet pipelines (641).

9. The automobile engine cover processing center according to claim 8, characterized in that: A steel ball locking structure is provided in the upper die body (64), and the oil inlet lower die set (7) is provided with a locking rivet (73) cooperating with the steel ball locking structure. The steel ball locking structure comprises a fixed sleeve (65) provided in the upper die body (64), a sliding sleeve (66) slidably installed on the inner side of the fixed sleeve (65), a plurality of groups of locking steel balls (67) provided on the sliding sleeve (66), and a driving sleeve (68) for driving the sliding sleeve (66) to move up and down. The side wall of the locking rivet (73) is provided with a locking groove (731) for the locking steel ball (67) to slide inwardly, and the inner wall of the fixed sleeve (65) is provided with an unlocking groove (651) for the locking steel ball (67) to slide outwardly. The upper die body (64) is further provided with a limiting sleeve (643) on the outer edge of the fixed sleeve (65), and the oil inlet lower die assembly (7) is provided with a limiting column (74) pluggably engaged with the limiting sleeve (643).

10. The automobile engine cover processing center according to claim 7, characterized in that: An extension frame (69) is provided at the bottom of the upper mold body (64), a detection sensor (691) for detecting the model of the clamp seat (2) is provided on the extension frame (69), and a nameplate (75) corresponding to the detection sensor (691) is provided on the top of the oil inlet lower mold assembly (7).

Images