CN211331228U - Sand mould backing pin shedder - Google Patents
Sand mould backing pin shedder Download PDFInfo
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- CN211331228U CN211331228U CN201921076053.6U CN201921076053U CN211331228U CN 211331228 U CN211331228 U CN 211331228U CN 201921076053 U CN201921076053 U CN 201921076053U CN 211331228 U CN211331228 U CN 211331228U
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- screw
- pin
- supporting pin
- sand
- threaded sleeve
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Abstract
The utility model belongs to the demoulding technique, concretely relates to sand mould backing pin shedder. The sand mold pin supporting and demolding device comprises a screw rod supporting pin (1), a threaded sleeve (5) and a limiting assembly. The threaded sleeve (5) is arranged and fixed on the sand box, a step through hole is formed in the threaded sleeve, and the part with the smaller diameter of the inner hole is a threaded hole. The screw rod supporting pin (1) sequentially comprises a front end part, a step matched with the step internal threaded hole of the threaded sleeve (5), a tool withdrawal groove, a limiting groove, a matching section and a root part from head to root, wherein the front end part of the screw rod supporting pin (1) penetrates through the step through hole of the threaded sleeve (5) and is inserted into the inner side of the sand box. The utility model discloses sand mould support pin shedder, screw rod support pin (1) can be taken out fast or push the position of regulation, thoroughly change its installation and the rotation time of dismantling all than longer problem. And a limit groove similar to a semicircular groove is arranged at the position, close to the front end, of the screw supporting pin (1), so that the screw supporting pin (1) can be effectively prevented from being lost, and the screw supporting pin has a higher practical application value compared with the prior art.
Description
Technical Field
The utility model belongs to the demoulding technique, concretely relates to sand mould backing pin shedder.
Background
In the actual production process of the sand mold, the sand mold is prevented from deforming, and the assembling operation is convenient and accurate. A sand box is generally disposed around the sand mold and inserted inside the sand box with a sand mold supporting pin. And after molding and sand mold assembling, disassembling the sand mold supporting pin, and then, carrying out sand box demolding operation.
However, the existing sand mold support pin only considers the positioning of screwing out and disassembling, adopts full-length common threads or trapezoidal threads, and has longer rotating time for assembling and disassembling. Meanwhile, the sand mold supporting pin is easy to lose due to the fact that no limiting device is arranged, and therefore great inconvenience is caused in practical use.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: the sand mold supporting pin demolding device is fast and convenient to assemble and disassemble and not prone to losing.
The technical scheme of the utility model is that: a sand mold supporting pin demoulding device comprises a screw supporting pin (1), a threaded sleeve (5) and a limiting assembly. The threaded sleeve (5) is arranged and fixed on the sand box, a step through hole is formed in the threaded sleeve, and the part with the smaller diameter is a threaded hole. The screw rod supporting pin (1) sequentially comprises a front end part, a step matched with the step internal threaded hole of the threaded sleeve (5), a tool withdrawal groove, a limiting groove, a matching section and a root part from head to root. Wherein the front end part of the screw rod support pin (1) penetrates through a step hole of the threaded sleeve (5) and is inserted into the inner side of the sand box. The limiting assembly is arranged in the threaded sleeve (5) along the radial direction and limits the screw supporting pin (1).
The limiting assembly comprises a slotted flat-end set screw (3), a cylindrical spiral compression spring (4) and a limiting ball (2), wherein the cylindrical spiral compression spring (4) is sleeved on the slotted flat-end set screw (3), the limiting ball (2) is arranged on the cylindrical spiral compression spring (4), the tightness of the screw rod supporting pin (1) can be adjusted under the action of the cylindrical spiral compression spring (4), and the limiting groove of the screw rod supporting pin (1) can be limited.
The diameter of the front end part of the screw supporting pin (1) is gradually reduced.
The matching section of the screw supporting pin (1) is in clearance fit with the threaded sleeve (5).
And a gap of about 0.5mm is reserved between the diameter of the front end part of the screw supporting pin (1) and the sand box.
And a gap of about 0.5-1 mm is reserved between the front end of the screw sleeve (5) and the sand box.
And a tool withdrawal groove for avoiding interference is reserved at the corner of the rear end of the screw sleeve (5).
The screw thread of the stepped hole of the screw sleeve (5) is a trapezoidal thread.
The utility model discloses the technical effect is: the utility model discloses the screw rod that has carried out shedder holds in the palm round pin and swivel nut and has carried out very big change, increases the steel ball formula that adjustable positioning elasticity has automatic limit function's device with the swivel nut. Meanwhile, the common full-length threads or trapezoidal threads of the screw supporting pin are changed into small trapezoidal threads, so that the screw supporting pin can be conveniently and rapidly screwed out or screwed into the threaded sleeve. And, increase approximate semicircle recess step in appropriate position to guarantee that the screw thread part of screw rod backing pin back of unscrewing or screwing in, the screw rod backing pin can be pulled out fast or push into the position of prescribing. The problem that the installation or disassembly has long rotation time is thoroughly solved, and the loss of the screw supporting pin can be effectively avoided.
Drawings
FIG. 1 is a schematic view of the screw supporting pin screwing-in state of the sand mold supporting pin demolding device of the present invention.
Fig. 2 is the utility model discloses sand mould holds in palm round pin shedder screw rod and holds in the palm the round pin and unscrew the state sketch map.
Wherein, 1-screw bolt support; 2-steel ball; 3-grooving flat-end fastening screws; 4-a cylindrical helical compression spring; 5-thread sleeve.
Detailed Description
The invention will be further described with reference to the following figures and examples:
please refer to fig. 1, which is a schematic diagram illustrating a screw supporting pin screwing-in state of the sand mold supporting pin demolding device of the present invention. The utility model discloses sand mould support round pin shedder includes screw rod support round pin (1), swivel nut (5) and spacing subassembly. The threaded sleeve (5) is fixed on the sand box through a screw, a step through hole is formed in the threaded sleeve, the part with the smaller diameter is a threaded hole, and the part with the larger diameter is a unthreaded hole. A gap of about 0.5-1 mm is reserved between the front end of the screw sleeve (5) and the sand box, and a tool withdrawal groove for avoiding interference is reserved at the corner of the rear end of the screw sleeve (5) so as to facilitate the installation of the screw sleeve. In addition, the screw thread of the stepped hole of the screw sleeve (5) is a trapezoidal thread, so that the screw supporting pin (1) can be quickly screwed in or out.
The screw rod supporting pin (1) is provided with a front end part, a step matched with the stepped threaded hole in the step of the screw sleeve (5), a tool withdrawal groove, a limiting groove, a matching section and a root part in sequence from the head to the root. The front end part of the screw supporting pin (1) penetrates through a threaded sleeve step hole to be inserted into the inner side of the sand box so as to support the sand mould to prevent the sand mould from being turned and falling off, and in addition, the mould assembling and the deformation of the sand mould are convenient to realize. The diameter of the front end part of the screw supporting pin (1) is gradually reduced, so that the screw supporting pin can be conveniently and quickly demoulded. The screw supporting pin (1) is in clearance fit with the screw sleeve at the matching section so as to avoid the phenomenon of clamping stagnation or locking in the demoulding process.
The limiting assembly is arranged in the threaded sleeve (5) in the radial direction and limits the screw supporting pin (1), and comprises a slotted flat-end set screw (3), a cylindrical spiral compression spring (4) and a limiting ball (2). Wherein, the cylindrical helical compression spring (4) is sleeved on the slotted flat end set screw (3). The limiting ball (2) is a steel ball, is arranged on the cylindrical spiral compression spring (4), can adjust the tightness of the screw rod supporting pin (1) under the action of the cylindrical spiral compression spring (4), and can limit a limiting groove of the screw rod supporting pin (1).
When the screw supporting pin (1) is installed, the screw supporting pin (1) is pushed inwards along the axial direction to enable the limiting ball (2) to pop out from the approximately semicircular groove step of the screw supporting pin (1) and reach the thread part position of the threaded sleeve (5), and the screw supporting pin (1) is rapidly screwed in until the flange plate end face of the screw supporting pin is attached to the flange plate end face of the threaded sleeve (5).
Please refer to fig. 2, which is a schematic diagram of the screw supporting pin screwing-out state of the sand mold supporting pin demolding device of the present invention.
When the screw rod support pin (1) is demolded and disassembled, the thread part of the screw rod support pin (1) is quickly screwed out from the thread part of the screw sleeve (5). Then, the screw receiver pin (1) is pulled out axially outward and moved to a predetermined position. Under the action of a cylindrical spiral compression spring (4), the limiting ball (2) is clamped into the approximately semicircular groove step of the screw supporting pin (1). Therefore, the demolding of the sand mold can be ensured by accurately drawing the screw rod supporting pin (1) out, and the screw rod supporting pin (1) can be prevented from being lost.
To sum up, the utility model discloses all carried out very big change with shedder's screw rod backing pin and swivel nut, increased the steel ball formula that adjustable positioning elasticity has automatic limit function's device with the swivel nut. Meanwhile, the common thread or trapezoidal thread of the full length of the screw supporting pin is changed into the screw supporting pin with only a small part of trapezoidal thread, so that the screw supporting pin can be rapidly pulled out or pushed into a specified position, and the problem that the installation or disassembly rotation time is long is thoroughly changed. And the limit groove which is similar to a semicircular groove is arranged at the position, close to the front end, of the screw supporting pin, so that the loss of the screw supporting pin can be effectively avoided, and the screw supporting pin has a higher practical application value compared with the prior art.
Claims (8)
1. A sand mold supporting pin demoulding device is characterized by comprising a screw supporting pin (1), a threaded sleeve (5) and a limiting component; the threaded sleeve (5) is arranged and fixed on the sand box, a step through hole is formed in the threaded sleeve, and the part with the smaller diameter of the inner hole is a threaded hole; the screw rod supporting pin (1) sequentially comprises a front end part, a step matched with a step internal threaded hole of the threaded sleeve (5), a tool withdrawal groove, a limiting groove, a matching section and a root part from head to root, wherein the front end part of the screw rod supporting pin (1) penetrates through the step hole of the threaded sleeve (5) and is inserted into the inner side of the sand box; the limiting assembly is arranged in the threaded sleeve (5) along the radial direction and limits the screw supporting pin (1).
2. A sand mould backing pin stripping device according to claim 1, wherein said limiting assembly comprises a slotted flat end set screw (3), a cylindrical helical compression spring (4) and a limiting ball (2); wherein, cylindrical helical compression spring (4) cup joints on fluting flush end holding screw (3), and spacing ball (2) set up on cylindrical helical compression spring (4) to under cylindrical helical compression spring (4) effect, the elasticity of adjustable screw rod support round pin (1) can restrict the spacing groove of screw rod support round pin (1).
3. A sand mold back pin demolding device according to claim 1, wherein the diameter of the front end portion of the screw back pin (1) is gradually reduced.
4. A sand mould backing pin demoulding device according to claim 1, characterized in that the screw backing pin (1) matching section is in clearance fit with the screw sleeve (5).
5. A sand mold back pin demolding device according to claim 1, wherein a clearance of about 0.5mm is left between the diameter of the front end of the screw back pin (1) and the sand box.
6. A sand mold pin-supporting demoulding device according to claim 1, wherein a gap of about 0.5-1 mm is left between the front end of the screw sleeve (5) and the sand box.
7. A sand mould supporting pin stripping device according to claim 1, characterized in that a relief groove is left at the rear end corner of the screw sleeve (5) to avoid interference.
8. A sand mould backing pin stripping device according to claim 1, characterized in that the screw thread of the stepped hole of the screw sleeve (5) is a trapezoidal thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921076053.6U CN211331228U (en) | 2019-07-09 | 2019-07-09 | Sand mould backing pin shedder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921076053.6U CN211331228U (en) | 2019-07-09 | 2019-07-09 | Sand mould backing pin shedder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211331228U true CN211331228U (en) | 2020-08-25 |
Family
ID=72100953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921076053.6U Active CN211331228U (en) | 2019-07-09 | 2019-07-09 | Sand mould backing pin shedder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211331228U (en) |
-
2019
- 2019-07-09 CN CN201921076053.6U patent/CN211331228U/en active Active
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