Fixing tool for sand vibration process of rear auxiliary frame

Abstract

According to the fixing tool for the sand vibration process of the rear auxiliary frame, a protrusion is arranged at the end of a first positioning block (2), a rear auxiliary frame casting head limiting area is formed, a protrusion is arranged at the end of a second positioning block (5), a rear auxiliary frame casting head limiting area is formed, and the contact face of the protrusion and a rear auxiliary frame casting head is a profiling face. A rear auxiliary frame placing area is formed among a rear auxiliary frame casting head limiting area of a first positioning block (2), a rear auxiliary frame casting head limiting area of a second positioning block (5), a first supporting column (6) and a second supporting column (14) of the pair of fixing assemblies which are distributed in a mirror image mode, and air bag cylinder assemblies of the pair of fixing assemblies are installed on a bottom plate (1). And the pressing device is used for pressing the rear auxiliary frame on the rear auxiliary frame placing area. The utility model has the advantages that: 1, the casting head is used for positioning to ensure that the hammerhead is not in direct contact with the part body; 2, a rubber shock absorber is adopted, so that the pressure of the hammering force on the limiting block in the hammering process is reduced;

Description

Technical Field

[0001] The utility model relates to the field of automobile parts, in particular to a fixing tool for a sand vibrating process of a rear auxiliary frame. Background Art

[0002] New energy is the main trend of transformation and upgrading of the global automobile industry and green development. Lightweight chassis is an inevitable choice for energy conservation and emission reduction. Due to the expansion of our company's business, the high-end customers we have contacted have extremely high requirements for product appearance and quality. The present invention, through design (fixed equipment for the vibration process of aluminum castings of the rear subframe), combined with the force balance analysis and evaluation of the product, finds the auxiliary fulcrum of the product, and uses a lever cylinder to fix it, so as to realize the binding linkage with the vibration equipment. When the employee starts the vibration equipment, the product can be automatically fixed on the vibration equipment, the sand cleaning limit point can be found, and then the telescopic movement of the hammer head and the rubber shock absorber at the corresponding position are used to remove the sand blocks in the product cavity. The sand cleaning tooling is used to ensure the appearance and inner cavity quality of the hollow product, effectively reducing the difficulty and intensity of the workers' work, ensuring the quality, and achieving the purpose of improving efficiency.

[0003] At present, with the development of lightweight automobiles, the steel rear subframe, which accounts for a relatively large proportion of the weight of chassis structural parts, has been gradually replaced by aluminum alloy materials with advantages such as light weight, stronger corrosion resistance, and integrated molding. This product is both a structural part and an appearance part. While ensuring the internal quality of the product, the appearance quality of the product must also be ensured. The control arm with this complex hollow structure is particularly difficult to remove the sand core. It is necessary to ensure that the sand blocks in the product cavity are cleaned up, and the appearance of the product must not be bumped during the sand removal process. Only by solving the sand removal problem can we ensure that the product can meet customer requirements and be delivered on time.

[0004] Combined with the product structure characteristics, processing technology, and matching characteristics of other parts of the rear subframe, through analysis and demonstration, the transition from manual sand cleaning to automatic sand vibration is realized. With the trend of automation upgrading in the manufacturing industry, manufacturing and management costs are reduced, production efficiency and quality are improved, production delivery time is ensured, and corporate competitiveness is enhanced.

[0005] At present, there is no recognized and effective process in the industry that can clean the sand of the complex hollow structure control arm of aluminum alloy and ensure the appearance quality. Some methods use high-temperature heating to clean the sand, while others use manual tapping to clean the sand. None of them can take into account the quality of both cleaning and appearance. The company has a large number of orders for integral rear subframes, with a wide variety of types and models. The product weighs dozens of kilograms, and the products need to be frequently moved up and down the equipment by manual labor, and are simply fixed, which cannot meet the production and product quality requirements. Utility Model Content

[0006] The utility model aims to solve the above-mentioned shortcomings and provide a fixing tool for the sand vibrating process of a rear sub-frame.

[0007] The utility model comprises a bottom plate installed on the shaking device, wherein a pair of fixed components distributed in a mirror image are arranged on the bottom plate.

[0008] The fixing assembly includes a first positioning block, a second positioning block, a first supporting column, an airbag cylinder assembly and a second supporting column.

[0009] The first positioning block, the second positioning block, the first supporting column and the second supporting column are respectively arranged on the bottom plate.

[0010] The end of the first positioning block is provided with a protrusion, and forms a limit area for the pouring and rising opening of the rear subframe.

[0011] The end of the second positioning block is provided with a protrusion, and forms a limiting area of ​​the rear sub-frame pouring riser, and the contact surface of the protrusion with the rear sub-frame pouring riser is a contour surface.

[0012] The rear sub-frame placement area is formed between the rear sub-frame pouring riser limiting area of ​​the first positioning block of the pair of mirror-distributed fixing assemblies, the rear sub-frame pouring riser limiting area of ​​the second positioning block, the first support column and the second support column.

[0013] The air bag cylinder assemblies of the pair of fixing assemblies are mounted on the bottom plate and are used to press the rear sub-frame on the rear sub-frame placement area.

[0014] Furthermore, the airbag cylinder assemblies of the pair of fixing assemblies are mounted on the bottom plate and are used to respectively press the rear sub-frame on the first support column.

[0015] Furthermore, the airbag cylinder assembly includes an airbag cushion plate, an airbag support rod, an airbag pressure plate, an airbag movable connecting plate and an airbag cylinder.

[0016] The airbag cushion is arranged on the bottom plate.

[0017] The airbag support rod and airbag cylinder are installed on the airbag cushion plate.

[0018] One end of the airbag pressure plate is connected to the power output end of the airbag cylinder through a pin shaft, and the first support column is located below the airbag pressure plate.

[0019] The airbag movable connecting plate has two pin holes.

[0020] The airbag movable connecting plate is connected to the airbag pressure plate through a pin shaft passing through one of the pin shaft holes.

[0021] The airbag movable connecting plate is connected to the airbag supporting rod through another pin shaft hole via a pin shaft.

[0022] Furthermore, a rubber layer is provided on the contact surfaces of the first positioning block, the second positioning block, the first support column and the second support column that are in contact with the pouring and riser of the rear sub-frame.

[0023] Furthermore, a rubber layer is provided at the contact point between the airbag pressure plate and the rear subframe.

[0024] Furthermore, two pairs of symmetrically distributed lifting ears for lifting are arranged on the bottom plate.

[0025] The utility model has the following advantages:

[0026] 1. Use the pouring and riser positioning to ensure that the hammer head does not directly contact the part body;

[0027] 2. Use rubber shock absorbers to reduce the pressure of the hammering force on the limit block during the hammering process;

[0028] 3. Design the tooling to be shared by left and right parts to reduce the cost of changeover.

[0029] 4. After hammering, the tooling and the equipment auxiliary mechanism are shaken together to remove the sand blocks in the inner cavity.

[0030] The invention discloses an automatic product fixing equipment for the sand vibrating process of an integral aluminum alloy rear subframe, which is linked to the action of a servo motor of the equipment and uses a lever airbag / cylinder to automatically press the product. When the equipment is started, the product can be automatically fixed, and the technical requirements of the sand vibrating process are achieved, which greatly reduces the difficulty of operation for employees, ensures stable quality, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of the utility model.

[0032] Figure 2 It is a schematic diagram of the structure of the rear subframe in its placement state. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0036] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the invention is usually placed when in use. This is only for the convenience of describing the present invention 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 invention. In addition, if the terms "first", "second", etc. appear in the description of the present invention, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0037] In the description of the embodiments of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting" and "connection" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] As shown in the figure, the utility model comprises a bottom plate 1 mounted on the shaking device, and a pair of fixed components distributed in a mirror image are arranged on the bottom plate 1.

[0039] The fixing assembly includes a first positioning block 2, a second positioning block 5, a first support column 6, an airbag cylinder assembly and a second support column 14.

[0040] The first positioning block 2, the second positioning block 5, the first supporting column 6 and the second supporting column 14 are respectively arranged on the bottom plate 1.

[0041] The end of the first positioning block 2 is provided with a protrusion, which forms a limit area for the pouring and rising opening of the rear subframe.

[0042] The end of the second positioning block 5 is provided with a protrusion, and forms a limiting area of ​​the rear sub-frame pouring riser. The contact surface of the protrusion with the rear sub-frame pouring riser is a contoured surface.

[0043] The rear subframe placement area is formed between the rear subframe pouring and rising limiting area of ​​the first positioning block 2 of the pair of mirror-distributed fixing components, the rear subframe pouring and rising limiting area of ​​the second positioning block 5, the first support column 6 and the second support column 14.

[0044] The airbag cylinder assemblies of the pair of fixing assemblies are mounted on the bottom plate 1 and are used to press the rear subframe on the rear subframe placement area.

[0045] Place the bottom plate 1 on the power output end of the vibrator, place the rear subframe pouring riser on the first positioning block 2, the second positioning block 5, the first support column 6 and the second support column 14 (i.e., the rear subframe placement area) respectively, start the airbag cylinder assembly of a pair of fixing assemblies to press the rear subframe on the rear subframe placement area, and then start the hammering device, which hammers the workpiece on the vibrator, and the vibrator starts to vibrate, thereby starting the sand vibration process.

[0046] Furthermore, the airbag cylinder assemblies of the pair of fixing assemblies are mounted on the bottom plate 1 and are used to press the rear sub-frame on the first support pillar 6 respectively.

[0047] Furthermore, the airbag cylinder assembly includes an airbag cushion plate 7, an airbag support rod 8, an airbag pressure plate 10, an airbag movable connecting plate 11 and an airbag cylinder 12.

[0048] The airbag cushion plate 7 is arranged on the bottom plate 1.

[0049] The airbag support rod 8 and the airbag cylinder 12 are installed on the airbag cushion plate 7.

[0050] One end of the airbag pressure plate 10 is connected to the power output end of the airbag cylinder 12 through a pin shaft, and the first support column 6 is located below the airbag pressure plate 10.

[0051] The airbag movable connecting plate 11 has two pin holes.

[0052] The airbag movable connecting plate 11 is connected to the airbag pressure plate 10 by a pin passing through one of the pin holes.

[0053] The airbag movable connecting plate 11 is connected to the airbag supporting rod 8 via a pin passing through another pin hole.

[0054] The working mode of the airbag cylinder assembly is as follows: the airbag cylinder 12 takes in air, and the airbag pressure plate 10 pushes out. Due to the connection with the power end of the airbag cylinder 12 and the airbag movable connecting plate 11, the airbag pressure plate 10 moves downward and presses the rear subframe. When the airbag cylinder 12 releases air, the airbag pressure plate 10 moves upward and the rear subframe is released.

[0055] Furthermore, the contact surfaces of the first positioning block 2 , the second positioning block 5 , the first support column 6 and the second support column 14 with the rear sub-frame casting riser are provided with a rubber layer.

[0056] The rubber layer is mainly provided to prevent damage to the rear subframe riser when in contact with the rear subframe riser in the working state.

[0057] Furthermore, a rubber layer is provided at the contact portion between the airbag pressure plate 10 and the rear subframe.

[0058] The rubber layer is mainly provided to prevent damage to the rear subframe riser when in contact with the rear subframe riser in the working state.

[0059] Furthermore, two pairs of symmetrically distributed lifting ears for lifting are provided on the bottom plate 1.

[0060] The invention discloses an automatic product fixing equipment for the sand vibrating process of an integral aluminum alloy rear subframe, which is linked to the action of a servo motor of the equipment and uses a lever airbag / cylinder to automatically press the product. When the equipment is started, the product can be automatically fixed, and the technical requirements of the sand vibrating process are achieved, which greatly reduces the difficulty of operation for employees, ensures stable quality, and improves production efficiency.

Claims

1. A fixing tool for the sand vibrating process of a rear subframe, characterized in that The invention comprises a bottom plate (1) mounted on a shaking device, wherein a pair of fixed components distributed in a mirror image are arranged on the bottom plate (1). The fixing assembly comprises a first positioning block (2), a second positioning block (5), a first supporting column (6), an airbag cylinder assembly and a second supporting column (14). The first positioning block (2), the second positioning block (5), the first supporting column (6) and the second supporting column (14) are respectively arranged on the bottom plate (1). The end of the first positioning block (2) is provided with a protrusion, and forms a rear sub-frame pouring riser limiting area. The end of the second positioning block (5) is provided with a protrusion, and forms a rear sub-frame pouring riser limiting area, and the contact surface of the protrusion with the rear sub-frame pouring riser is a contoured surface. The rear sub-frame placement area is formed between the rear sub-frame pouring riser limiting area of ​​the first positioning block (2) of the pair of mirror-distributed fixing components, the rear sub-frame pouring riser limiting area of ​​the second positioning block (5), the first support column (6) and the second support column (14), The airbag cylinder assemblies of the pair of fixing assemblies are mounted on the bottom plate (1) and are used to press the rear subframe on the rear subframe placement area.

2. The fixture for fixing the sand vibrating process of the rear subframe according to claim 1, characterized in that: The airbag cylinder assemblies of the pair of fixing assemblies are mounted on the bottom plate (1) and are used to respectively press the rear sub-frame on the first support column (6).

3. The fixture for fixing the sand vibrating process of the rear subframe according to claim 1, characterized in that: The airbag cylinder assembly comprises an airbag cushion plate (7), an airbag support rod (8), an airbag pressure plate (10), an airbag movable connecting plate (11) and an airbag cylinder (12). The airbag cushion plate (7) is arranged on the bottom plate (1). The airbag support rod (8) and the airbag cylinder (12) are mounted on the airbag cushion plate (7). One end of the airbag pressure plate (10) is connected to the power output end of the airbag cylinder (12) through a pin shaft, and the first support column (6) is located below the airbag pressure plate (10). The airbag movable connecting plate (11) has two pin holes. The airbag movable connecting plate (11) is connected to the airbag pressure plate (10) via a pin passing through one of the pin holes. The airbag movable connecting plate (11) is connected to the airbag supporting rod (8) via a pin shaft passing through another pin shaft hole.

4. The fixture for fixing the sand vibrating process of the rear subframe according to claim 1, characterized in that: The surfaces of the first positioning block (2), the second positioning block (5), the first support column (6) and the second support column (14) in contact with the pouring and riser of the rear sub-frame are provided with a rubber layer.

5. The fixture for fixing the sand vibrating process of the rear subframe according to claim 3, characterized in that: A rubber layer is provided at the contact point between the airbag pressure plate (10) and the rear sub-frame.

6. The fixture for fixing the sand vibrating process of the rear subframe according to claim 1, characterized in that: Two pairs of symmetrically distributed lifting ears for lifting are arranged on the bottom plate (1).

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