Clamp with variable clamping jaws
By designing variable jaw clamps, the problem of low fixture compatibility is solved, and compatible clamping and stable placement of multiple sand cores is achieved, which improves production efficiency and flexibility and reduces transformation costs.
Patent Information
- Application Number
- CN202422259835.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-13
AI Technical Summary
The existing fixtures have low compatibility during clamping and core forming, and cannot achieve automated core forming production, resulting in low production efficiency and high transformation costs.
A variable jaw clamp is designed, including a connecting flange assembly, a variable rotary assembly, a rotary fixing assembly and an air jaw assembly. Compatibility with different sand cores is achieved through a multi-clip arrangement and a variable rotary assembly. The cylinder and air jaw are individually controlled to ensure the accuracy and stability of clamping.
It improves compatibility between clamping and core forming processes, reduces the requirements of sand casting processes, and realizes clamping of multiple workpieces at the same time, saving time and cost and improving production efficiency.
Smart Images
Figure CN223162712U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of jigs, in particular to a variable jaw jig. Background Art
[0002] At present, automatic core assembly jigs are widely used in industries such as the sand mold casting of engine blocks. However, during the grasping and transportation process, the position of the fixed jaws is used for handling, and there are often incompatibilities between the existing material taking and core assembly placement, resulting in the inability to realize the robot automatic core assembly process and improve production efficiency. At the same time, there are cases where a transfer placement table is used to add a turnover robot jig or the incoming core placement structure is changed to conform to the existing core assembly process to meet the different requirements of taking and placing. This will lead to an increase in intermediate transition equipment or rectification costs. Generally, the transformation and upgrading space of old factories is relatively limited, and it is impossible to add intermediate equipment placement in the old site, so there is also a need that cannot realize automatic core assembly production. Generally speaking, the existing handling and core assembly jigs have low compatibility when multiple jigs are combined, are not conducive to the compatible use of clamping when products are diverse, and are not conducive to the automatic flow of the entire production line assembly.
[0003] Therefore, how to provide a variable jaw jig with a wide application range and high compatibility has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Utility Model
[0004] The technical problem to be solved by the utility model is to provide a variable jaw jig with a wide application range and high compatibility.
[0005] The solution of the utility model is realized as follows: The utility model provides a variable jaw jig, which includes a connecting flange assembly, a variable rotation assembly, a rotation fixing assembly and a jaw assembly. The connecting flange assembly includes a flange, one side of the flange is connected to one end of the variable rotation assembly, the other end of the variable rotation assembly is connected to one end of the rotation fixing assembly, and the other end of the rotation fixing assembly is connected to one end of the jaw assembly. For the variable jaw jig with this structure, multiple clamping points of the jaw assembly can be compatible with various cores. The jaw assembly is driven to rotate by the variable rotation assembly, allowing for product differentiation in the existing engine core process in the core casting industry and the consistency difference in the placement postures of incoming cores, greatly reducing the requirements for the sand casting process. Therefore, it is suitable for clamping, core assembly, transportation, etc. of fixed workpieces, that is, two different postures during core taking and placing, etc., and can also realize the separate clamping of different cores, etc.; the cylinders and jaws are controlled separately and used in combination, enabling cores with different placement postures to ensure the accuracy and stability of clamping and placement under simple structural control; the variable jaw jig can clamp multiple workpieces at one time, increasing the flexibility of the same working node, saving time and costs while greatly improving efficiency.
[0006] Another technical solution of the present utility model is that on the basis of the above, the connecting flange assembly further includes a mounting plate, the mounting plate is disposed opposite to the flange, and several columns are further provided between the flange and the mounting plate.
[0007] Another technical solution of the present utility model is that on the basis of the above, the connecting flange assembly further includes several first bolts, one end of several of the columns is detachably and fixedly connected to the flange through the first bolts, and the other end of the column is detachably and fixedly connected to the mounting plate.
[0008] Another technical solution of the present utility model is that on the basis of the above, the variable rotation assembly includes a bracket and a cylinder, the cylinder is disposed on the bracket, and when the cylinder rotates, it drives the bracket to rotate.
[0009] Another technical solution of the present utility model is that on the basis of the above, several connecting holes for connecting with the flange are further provided at one end of the cylinder departing from the bracket.
[0010] Another technical solution of the present utility model is that on the basis of the above, the variable rotation assembly further includes a second bolt for connecting the bracket and the cylinder together, and the second bolt is disposed between the bracket and the cylinder.
[0011] Another technical solution of the present utility model is that on the basis of the above, the rotation fixing assembly includes a bearing seat, and one end of the bearing seat is fixedly disposed on the mounting plate.
[0012] Another technical solution of the present utility model is that on the basis of the above, a rotatable rotating shaft is provided in the bearing seat, a connecting rod is fixedly provided at one end of the rotating shaft, and a rotating shaft is provided at one end of the connecting rod departing from the rotating shaft.
[0013] Another technical solution of the present utility model is that on the basis of the above, the air claw assembly includes an air claw and a pair of opposite clamping toes, one end of the air claw is detachably and fixedly connected to the rotating shaft, and the clamping toes are disposed at the other end of the air claw.
[0014] Another technical solution of the present utility model is that on the basis of the above, a first clamping plate and a second clamping plate are further provided on the clamping toes, and the second clamping plate is disposed on one side of the first clamping plate; a third bolt and a mounting bracket are further provided on the clamping toes, the third bolt is used to fix the mounting bracket on one side of the clamping toes, and a photoelectric detection switch is further provided on the mounting bracket. Description of the Drawings
[0015] The accompanying drawings, which form a part of the present utility model, are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model.
[0016] Figure 1 It is a schematic structural diagram of a variable jaw fixture of the present utility model;
[0017] Figure 2 For Figure 1 It is a schematic structural diagram of the connecting flange assembly in
[0018] Figure 3 For Figure 1 It is a schematic structural diagram of the variable rotation assembly in
[0019] Figure 4 For Figure 1 It is a schematic structural diagram of the rotation fixing assembly in
[0020] Figure 5 For Figure 1 It is a schematic structural diagram of the air chuck assembly in
[0021] The corresponding relationship of the reference numerals is as follows:
[0022] 10 Connecting flange assembly 101 Flange 102 Column
[0023] 103 Mounting plate 104 First bolt
[0024] 20 Variable rotation assembly 201 Cylinder 202 Bracket
[0025] 203 Second bolt 204 Connection hole
[0026] 30 Rotation fixing assembly
[0027] 301 Bearing seat 302 Rotating shaft 303 Connecting rod
[0028] 304 Rotating shaft
[0029] 40 Air chuck assembly
[0030] 401 Air chuck 402 Clamping toe 403 First clamping plate
[0031] 404 Second clamping plate 405 Mounting bracket 406 Photoelectric detection switch
[0032] 407 Third bolt
[0033] 50 Workpiece Detailed implementation manners
[0034] The present utility model will be described in detail below in conjunction with the accompanying drawings. The description in this part is merely exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present utility model. In addition, those skilled in the art can make corresponding combinations of the features in the embodiments and different embodiments in this document according to the description of this document.
[0035] The embodiments of the present utility model are as follows. Please refer to Figures 1 to 5 the variable jaw fixture shown in the figure. Specifically, the variable jaw fixture includes a connecting flange assembly 10, a variable rotation assembly 20, a rotation fixing assembly 30, and a gripper assembly 40. More specifically, the connecting flange assembly 10 includes a flange 101. One side of the flange 101, that is, Figure 1 and Figure 2 the lower side shown in the figure is connected to one end of the variable rotation assembly 20, that is, the upper end shown in the figure. The other end of the variable rotation assembly 20, that is, Figure 3 the lower end shown in the figure is connected to one end of the rotation fixing assembly 30, that is, Figure 4 the upper end shown in the figure. The other end of the rotation fixing assembly 30, that is, Figure 4 the lower end shown in the figure is connected to one end of the gripper assembly 40, that is, Figure 5 the upper end shown in the figure. For the variable jaw fixture with this structure, the multi-clamping point arrangement of the gripper assembly 40 can be compatible with a variety of cores. By driving the gripper assembly 40 to rotate through the variable rotation assembly 20, it allows for product differentiation in the existing engine core process in the core casting industry and the consistency difference in the placement postures of incoming cores, greatly reducing the requirements for the sand casting process. Therefore, it is suitable for clamping and fixing workpieces, core assembly, transportation, etc., that is, two different postures during core picking and placing, etc., and can also achieve separate clamping of different cores; the cylinder 201 and the gripper 401 are controlled separately and used in combination, enabling cores placed in different postures to ensure the accuracy and stability of clamping and placing under simple structural control; the variable jaw fixture can clamp multiple workpieces at one time, increasing the flexibility at the same working node, saving time and cost, and greatly improving efficiency.
[0036] Based on the above embodiments, in another embodiment of the present utility model, as Figure 2 shown, the connecting flange assembly 10 further includes a mounting plate 103. The mounting plate 103 is disposed opposite to the flange 101, and several columns 102 are further provided between the flange 101 and the mounting plate 103, that is, the mounting plate 103 and the flange 101 are fixedly connected together by several columns 102.
[0037] Based on the above embodiments, in another embodiment of the present utility model, as Figure 2As shown in the figure, the connecting flange assembly 10 further includes a plurality of first bolts 104. One end of each of the plurality of columns 102, i.e., the upper end shown in the figure, is detachably and fixedly connected to the flange 101 through the first bolts 104. The other end of the column 102, i.e., the lower end shown in the figure, is detachably and fixedly connected to the mounting plate 103. For the number of columns 102, it is preferably three. The first bolts 104 are preferably locking bolts, and the number thereof is the same as that of the columns 102.
[0038] On the basis of the above embodiment, in another embodiment of the present utility model, as Figure 4 shown, the variable rotation assembly 20 includes a bracket 202 and a cylinder 201. The cylinder 201 is arranged on the bracket 202, and when the cylinder 201 rotates, it drives the bracket 202 to rotate together.
[0039] On the basis of the above embodiment, in another embodiment of the present utility model, as Figure 3 shown, at the end of the cylinder 201 facing away from the bracket 202, i.e., the upper end shown in the figure, there are also provided a plurality of connection holes 204 for connecting with the flange 101. The connection holes 204 are preferably screw holes.
[0040] On the basis of the above embodiment, in another embodiment of the present utility model, as Figure 3 shown, the variable rotation assembly 20 further includes a second bolt 203 for connecting the bracket 202 and the cylinder 201 together. The second bolt 203 is arranged between the bracket 202 and the cylinder 201. For the second bolt 203, it is preferably an anti-drop bolt.
[0041] On the basis of the above embodiment, in another embodiment of the present utility model, as Figure 4 shown, the rotation fixing assembly 30 includes a bearing seat 301. One end of the bearing seat 301, i.e., the right rear end shown in the figure, is detachably and fixedly arranged on the mounting plate 103.
[0042] On the basis of the above embodiment, in another embodiment of the present utility model, as Figure 4 shown, a rotatable rotating shaft 302 is further arranged in the bearing seat 301. One end of the rotating shaft 302, i.e., the upper end shown in the figure, is fixedly provided with a connecting rod 303. At the end of the connecting rod 303 facing away from the rotating shaft 302, i.e., the left rear end shown in the figure, there is also provided a rotating shaft 304.
[0043] On the basis of the above embodiment, in another embodiment of the present utility model, as Figure 5 shown, the gripper assembly 40 includes a gripper 401 and a pair of oppositely arranged gripper toes 402. One end of the gripper 401, i.e., the upper end shown in the figure, is detachably and fixedly connected to the rotating shaft 302. The gripper toes 402 are specifically arranged at the other end of the gripper 401, i.e., the lower end shown in the figure.
[0044] Based on the above embodiments, in another embodiment of the present utility model, as Figure 5 shown, on the toe clip 402, specifically on its side, a first clamping plate 403 and a second clamping plate 404 are further provided. The second clamping plate 404 is arranged on one side of the first clamping plate 403, that is, the upper side shown in the figure. A third bolt 407 and a mounting bracket 405 are further provided on the toe clip 402. The third bolt 407 is used to fix the mounting bracket 405 to one side of the toe clip 402, that is, the outer side shown in the figure. An optoelectronic detection switch 406 for detection is further provided on the mounting bracket 405. As Figure 1 shown, the workpiece 50 is arranged below the gripper assembly.
[0045] For the variable gripper fixture with the above structure, compared with similar devices of the existing structure, the multi-clamping point arrangement of the gripper assembly 40 can be compatible with a variety of sand cores. By driving the gripper assembly 40 to rotate through the variable rotation assembly 20, it allows for product differentiation in the existing engine sand core process in the sand core casting industry, as well as the consistency difference in the placement postures of incoming sand cores, greatly reducing the requirements for the sand mold casting process. Therefore, it is suitable for clamping and fixing workpieces, core assembly, transportation, etc., that is, two different postures when placing and removing sand cores, etc., and can also achieve separate clamping of different sand cores, etc.; the cylinder 201 and the gripper 401 are controlled separately and used in combination, enabling sand cores placed in different postures to ensure the accuracy and stability of clamping and placement under simple structural control; the variable gripper fixture can clamp multiple workpieces at one time, increasing the flexibility at the same working node, saving time and cost, and greatly improving the efficiency.
[0046] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.
Claims
1. A variable jaw fixture, characterized in that, The variable jaw fixture includes a connecting flange assembly, a variable rotation assembly, a rotation fixing assembly and a gripper assembly. The connecting flange assembly includes a flange, one side of the flange is connected to one end of the variable rotation assembly, the other end of the variable rotation assembly is connected to one end of the rotation fixing assembly, and the other end of the rotation fixing assembly is connected to one end of the gripper assembly.
2. The variable jaw clamp according to claim 1, characterized in that: The connecting flange assembly further includes a mounting plate, the mounting plate is disposed opposite to the flange, and several upright columns are further provided between the flange and the mounting plate.
3. The variable jaw fixture according to claim 2, wherein, The connecting flange assembly further includes several first bolts. One end of several upright columns is detachably and fixedly connected to the flange through the first bolts, and the other end of the upright columns is detachably and fixedly connected to the mounting plate.
4. The variable jaw fixture according to claim 3, characterized in that, The variable rotation assembly includes a bracket and a cylinder. The cylinder is disposed on the bracket. When the cylinder rotates, it drives the bracket to rotate.
5. The variable jaw fixture according to claim 4, wherein, Several connection holes for connecting to the flange are further provided at one end of the cylinder away from the bracket.
6. The variable jaw fixture according to claim 5, characterized in that, The variable rotation assembly further includes a second bolt for connecting the bracket and the cylinder together. The second bolt is disposed between the bracket and the cylinder.
7. The variable jaw fixture according to claim 6, characterized in that, The rotation fixing assembly includes a bearing seat, and one end of the bearing seat is fixedly disposed on the mounting plate.
8. The variable jaw fixture according to claim 7, characterized in that, A rotatable rotating shaft is provided in the bearing seat. One end of the rotating shaft is fixedly provided with a connecting rod, and a rotating shaft is provided at the end of the connecting rod away from the rotating shaft.
9. The variable jaw fixture according to claim 8, wherein The gripper assembly includes a gripper and a pair of opposing gripper toes. One end of the gripper is detachably and fixedly connected to the rotating shaft, and the gripper toes are disposed at the other end of the gripper.
10. The variable jaw fixture according to claim 9, wherein A first clamping plate and a second clamping plate are further provided on the gripper toe. The second clamping plate is disposed on one side of the first clamping plate; A third bolt and a mounting bracket are further provided on the gripper toe. The third bolt is used to fix the mounting bracket to one side of the gripper toe, and a photoelectric detection switch is further provided on the mounting bracket.