CN220259476U - Sand core grabbing device - Google Patents
Sand core grabbing device Download PDFInfo
- Publication number
- CN220259476U CN220259476U CN202321727570.1U CN202321727570U CN220259476U CN 220259476 U CN220259476 U CN 220259476U CN 202321727570 U CN202321727570 U CN 202321727570U CN 220259476 U CN220259476 U CN 220259476U
- Authority
- CN
- China
- Prior art keywords
- air bag
- pull rod
- sand core
- bearing seat
- grabbing device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000013459 approach Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000001125 extrusion Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Casting Devices For Molds (AREA)
Abstract
The utility model provides a sand core grabbing device which comprises an air bag bearing seat, an air bag pull rod, an air cylinder connected with the air bag pull rod and an air bag arranged around the air bag pull rod, wherein the air bag bearing seat is arranged on the air bag bearing seat; when the sand core grabbing device is used, the air bag is expanded outwards through the extrusion air bag to be matched with the counter bore arranged on the sand core, after the air bag is extruded and attached to the inner wall of the counter bore, the sand core is grabbed through the friction force between the air bag and the inner wall of the counter bore, and the sand core grabbing device is compact in structure, small in occupied space and low in maintenance cost.
Description
Technical Field
The utility model relates to the technical field of casting, in particular to a sand core grabbing device.
Background
At present, small passenger car engines basically adopt lightweight aluminum cylinders, and as a traditional engine casting enterprise, the current market share is required to be converted into a large diesel engine. As the shape of the cylinder body is enlarged, the corresponding sand core outline dimension is enlarged, so that the large-size sand core production is automated, a larger robot clamp is needed to be matched with the large-size sand core, but the size of the robot clamp is limited by the layout of various equipment, a rollaway nest, a core repairing device and the like of a small sand core production line; if a larger clamp is designed to be matched with the existing sand core, the clamp can be interfered with equipment and the like in the operation process, and the problem that the production process is required to solve is that how to design the clamp with compact structure and small occupied space.
Disclosure of Invention
The utility model aims to provide a sand core grabbing device, which aims to enable the clamp to be compact in structure and small in occupied space.
In order to achieve the aim of the utility model, the utility model adopts the following technical scheme:
a sand core grabbing device comprises an air bag bearing seat, an air bag pull rod, an air cylinder connected with the air bag pull rod and an air bag arranged around the air bag pull rod; the air bag bearing seat is provided with a hollow inner channel, the rear end of the air bag pull rod is inserted into the inner channel and is coaxially connected with a piston rod of the air cylinder, and the front end of the air bag pull rod is provided with a stop block protruding outwards to limit the air bag between the stop block and the air bag bearing seat; when the piston rod pulls the air bag pull rod backwards, the stop block approaches the air bag bearing seat and presses the air bag.
Further, the cylinder is arranged at the rear of the air bag bearing seat, and a piston rod of the cylinder is inserted into the inner channel forwards and is connected with the air bag pull rod coaxially through a coupler.
Further, a counter bore is arranged on the sand core corresponding to the air bag pull rod, and the air bag pull rod is inserted into the counter bore and extrudes the air bag, so that the air bag is expanded outwards and extruded and attached to the inner wall of the counter bore.
According to the sand core grabbing device, the air bags are extruded to expand outwards to be matched with the counter bores arranged on the sand cores, and after the air bags are extruded and attached to the inner walls of the counter bores, the sand cores are grabbed through friction force between the air bags and the inner walls of the counter bores, so that the sand core grabbing device is compact in structure, small in occupied space and low in maintenance cost.
Drawings
Fig. 1 is a schematic structural view of a sand core gripping device of the present utility model.
FIG. 2 is a schematic illustration of the bladder and bladder tie rod extending into the counterbore of the sand core.
FIG. 3 is a schematic illustration of the outward expansion of the bladder in compression against the interior wall of the counterbore.
Detailed Description
The present utility model is further illustrated in the accompanying drawings and detailed description which are to be understood as being merely illustrative of the utility model and not limiting of its scope, since various equivalent modifications to the utility model will fall within the scope of the appended claims to the skilled person after reading the utility model.
As shown in fig. 1, the utility model discloses a sand core grabbing device, which comprises an air bag bearing seat 1, an air bag pull rod 2, a limit nut 3 arranged at the front end of the air bag bearing seat 1, an air cylinder 4 connected with the air bag pull rod, and an air bag 5 arranged around the air bag pull rod. The airbag carrier 1 has a hollow inner passage into which the rear end of the airbag stay 2 is inserted. The cylinder 4 is mounted behind the airbag carrier 1, and the piston rod 6 of the cylinder is inserted forward into the inner channel and coaxially connected with the airbag pull rod 2 through the coupling 7. In this embodiment, a rubber balloon is selected. The cylinder is provided with an air pipe joint 10.
The front end of the air bag pull rod 2 is provided with a stop block 8 protruding outwards to limit the air bag 5 between the stop block 8 and the air bag bearing seat 1; when the piston rod 6 pulls the airbag stay 2 rearward, the stopper 8 approaches the airbag carrier 1 and presses the airbag 5 to expand the airbag 5 outward.
As shown in fig. 2 and 3, a trial example of the core gripping device gripping the core is shown. A counter bore 9 matched with the air bag 5 is formed on the sand core. As shown in fig. 2, when the air bag bearing seat 1 and the air bag 5 extend into the counter bore, the depth is controlled by the limit nut 3 on the device. As shown in fig. 3, after the rubber air bag 5 is compressed into an elliptical shape on the side, the outer wall of the air bag 5 is tightly attached to the inner wall of the sand core counter bore 9, so that the robot drives the clamp, the clamp drives the device, and the device drives the sand core to move together, so that the sand core is carried.
Claims (3)
1. The sand core grabbing device is characterized by comprising an air bag bearing seat, an air bag pull rod, an air cylinder connected with the air bag pull rod and an air bag arranged around the air bag pull rod;
the air bag bearing seat is provided with a hollow inner channel, the rear end of the air bag pull rod is inserted into the inner channel and is coaxially connected with a piston rod of the air cylinder, and the front end of the air bag pull rod is provided with a stop block protruding outwards to limit the air bag between the stop block and the air bag bearing seat; when the piston rod pulls the air bag pull rod backwards, the stop block approaches the air bag bearing seat and presses the air bag.
2. The sand core gripping device according to claim 1, wherein the cylinder is mounted behind the air bag bearing seat, and a piston rod of the cylinder is inserted forward into the inner passage and coaxially connected with the air bag pull rod through a coupling.
3. The sand core grabbing device according to claim 1 or 2, wherein a counter bore is formed in the sand core corresponding to the air bag pull rod, and the air bag pull rod is inserted into the counter bore and presses the air bag, so that the air bag is expanded outwards and is pressed and fitted with the inner wall of the counter bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321727570.1U CN220259476U (en) | 2023-07-04 | 2023-07-04 | Sand core grabbing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321727570.1U CN220259476U (en) | 2023-07-04 | 2023-07-04 | Sand core grabbing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220259476U true CN220259476U (en) | 2023-12-29 |
Family
ID=89303501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321727570.1U Active CN220259476U (en) | 2023-07-04 | 2023-07-04 | Sand core grabbing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220259476U (en) |
-
2023
- 2023-07-04 CN CN202321727570.1U patent/CN220259476U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |