Positioning and clamping mechanism for aluminum shell die casting

Abstract

The utility model discloses a locating and clamping mechanism for aluminum shell die casting, which comprises a base plate, a locating pin assembly is installed on the base plate, the locating pin assembly comprises an installation seat, a first installation groove is arranged on the lower surface of the installation seat, a fixing seat is fixedly connected in the first installation groove, a plurality of elastic pieces are fixedly connected on the lower surface of the fixing seat, and the elastic pieces are arranged on the base plate. Clamping blocks are fixedly connected to the lower surfaces of the elastic pieces, inclined grooves are formed in the clamping blocks, a second mounting hole is formed in the mounting base, a sleeve is rotationally connected into the second mounting hole, and a rotary knob is fixedly connected to the top end of the sleeve; according to the positioning pin assembly, the multiple positioning blocks can be synchronously adjusted to be matched with positioning holes with different hole diameters, the positioning pin assembly is more universal compared with an existing positioning pin, and due to the fact that the positioning blocks have the stepless adjusting function, the defects caused by thermal expansion and cold contraction of the positioning pin can be overcome by adjusting the positioning blocks; meanwhile, the assembly is assembled with the substrate in a clamping mode, has the advantage of being convenient to disassemble and assemble, and is more practical.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning and clamping devices, in particular to a positioning and clamping mechanism for aluminum shell die casting. Background Art

[0002] The aluminum shell needs to be machined after die-casting, and a positioning clamping mechanism needs to be used to fix the aluminum shell during machining. The existing positioning clamping mechanism generally uses positioning pins to position the aluminum shell and uses pneumatic clamps to lock the aluminum shell. This positioning clamping mechanism has the following defects when used: First, the positioning pin structure of the existing positioning clamping mechanism is fixed and cannot be adjusted steplessly according to the positioning hole diameter, so it lacks versatility, and due to the influence of thermal expansion and contraction, it is easy to cause the aluminum shell to be inconvenient to install or the positioning accuracy to decrease; second, the positioning pin of the existing positioning clamping mechanism cannot be quickly disassembled and assembled, so it is inconvenient to use. Utility Model Content

[0003] The purpose of the present utility model is to provide a positioning and clamping mechanism for aluminum shell die casting to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a positioning and clamping mechanism for die-casting of aluminum shells, comprising a base plate, a positioning pin assembly being installed on the base plate, the positioning pin assembly comprising a mounting seat, a first mounting groove being provided on the lower surface of the mounting seat, a fixing seat being fixedly connected in the first mounting groove, a plurality of spring pieces being fixedly connected on the lower surface of the fixing seat, a clamping block being fixedly connected on the lower surface of the spring pieces, an oblique groove being provided on the clamping block, a second mounting hole being provided in the mounting seat, a sleeve being rotatably connected in the second mounting hole, a knob being fixedly connected to the top end of the sleeve, a connecting rod being slidably connected in the knob, a triggering member being fixedly connected to the bottom end of the connecting rod, and the triggering member being sleeved in the oblique groove.

[0005] Preferably, a plurality of first mounting holes are evenly distributed on the base plate, and the clamping blocks are clamped in the first mounting holes.

[0006] Preferably, a third limiting flange is fixedly connected to the trigger member, and the third limiting flange is arranged at the bottom end of the sleeve.

[0007] Preferably, a retaining spring is installed on the sleeve, and the retaining spring is sleeved in the second mounting hole.

[0008] Preferably, a first limiting flange is fixedly connected to the sleeve, and the first limiting flange is arranged on the top of the mounting seat.

[0009] Preferably, an adjusting block is threadedly connected to the sleeve, four positioning blocks are slidably connected to the outer wall of the adjusting block, and the positioning blocks are slidably connected to the mounting seat.

[0010] Preferably, the sleeve is provided with an external thread, the adjusting block is provided with a threaded hole, and the external thread is threadedly connected to the threaded hole.

[0011] Preferably, four first guide grooves are evenly distributed on the outer wall of the adjustment block, a second guide block is slidably connected in the first guide groove, and the four second guide blocks are fixedly connected to the positioning block, a second guide groove is opened on the lower surface of the positioning block, the first guide block is slidably connected in the second guide groove, four second mounting grooves are evenly distributed on the mounting seat, and the first guide block is fixedly connected in the second mounting groove.

[0012] Preferably, a second limiting flange is fixedly connected to the sleeve, and the second limiting flange is arranged at the bottom end of the external thread.

[0013] The utility model provides a positioning clamping mechanism for aluminum shell die-casting, which has the following advantages: the positioning pin assembly of the utility model can synchronously adjust multiple positioning blocks to adapt to positioning holes of different apertures, which is more universal than the existing positioning pins, and because the positioning block has a stepless adjustment function, the defects of the positioning pin caused by thermal expansion and contraction can be solved by adjusting the positioning block; at the same time, the assembly is assembled with the base plate in a clamping manner, which has the advantage of easy disassembly and assembly, and is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of a three-dimensional cross-section structure of a positioning pin assembly of the present utility model;

[0017] Figure 3 for Figure 2 A magnified view of the structure of area A in the middle;

[0018] Figure 4 This is a schematic diagram of a three-dimensional cross-sectional structure of the mounting base of the present utility model;

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of the adjustment block of the utility model;

[0020] Figure 6 This is a schematic diagram of the three-dimensional structure of the positioning block of the utility model;

[0021] Figure 7 It is a schematic diagram of the three-dimensional structure of the fixing seat of the present utility model.

[0022] In the figure: 1. Base plate; 11. First mounting hole; 2. Positioning pin assembly; 21. Mounting seat; 211. Second mounting hole; 212. First mounting slot; 213. Second mounting slot; 214. First guide block; 215. Retaining spring; 22. Sleeve; 221. First limiting flange; 222. Second limiting flange; 223. External thread; 224. Adjusting block; 225. Threaded hole; 226. First guide slot; 227. Positioning block; 228. Second guide block; 229. Second guide slot; 23. Fixing seat; 231. Spring piece; 232. Block; 233. Bevel slot; 234. Connecting rod; 235. Trigger; 236. Third limiting flange; 24. Knob. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, 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 embodiments described are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0024] Please see the attached Figure 1 -Attached Figure 7The utility model provides an embodiment: a positioning clamping mechanism for aluminum shell die casting, including a base plate 1, a positioning pin assembly 2 is installed on the base plate 1, the positioning pin assembly 2 includes a mounting seat 21, a first mounting groove 212 is provided on the lower surface of the mounting seat 21, a fixing seat 23 is fixedly connected in the first mounting groove 212, a plurality of spring pieces 231 are fixedly connected to the lower surface of the fixing seat 23, and a clamping block 232 is fixedly connected to the lower surface of the spring pieces 231, an oblique groove 233 is provided on the clamping block 232, a second mounting hole 211 is provided in the mounting seat 21, a sleeve 22 is rotatably connected in the second mounting hole 211, a knob 24 is fixedly connected to the top of the sleeve 22, and the knob 24 The inner sliding connection is provided with a connecting rod 234, and the bottom end of the connecting rod 234 is fixedly connected with a trigger member 235, and the trigger member 235 is sleeved in the inclined groove 233. The positioning pin assembly 2 is used to cooperate with the existing pneumatic clamp to position and clamp the casting. The positioning pin assembly 2 is clamped on the base plate 1 through the clamping block 232. The fixed seat 23, the spring piece 231 and the clamping block 232 are an integrated structure. The trigger member 235 is triggered by the connecting rod 234. The trigger member 235 slides along the inclined groove 233, causing the clamping block 232 to move toward the center of the trigger member 235, thereby causing the spring piece 231 to bend and deform, and the clamping block 232 to be out of the clamping state. At the same time, the spring piece 231 also provides a reset elastic force for the trigger member 235 ; A plurality of first mounting holes 11 are evenly distributed on the substrate 1, and the clamping block 232 is clamped in the first mounting hole 11. The cross-section of the first mounting hole 11 is a convex shape, which is used to cooperate with the clamping block 232 for clamping; a third limiting flange 236 is fixedly connected to the trigger member 235, and the third limiting flange 236 is set at the bottom end of the sleeve 22, and the third limiting flange 236 is used to limit the upward movement of the trigger member 235; a retaining spring 215 is installed on the sleeve 22, and the retaining spring 215 is sleeved in the second mounting hole 211, and the retaining spring 215 is used to prevent the sleeve 22 from axial movement; a first limiting flange 221 is fixedly connected to the sleeve 22, and the first limiting flange 221 is set at At the top of the mounting seat 21, a first limiting flange 221 is used to cooperate with the retaining spring 215 to prevent the sleeve 22 from moving axially; an adjusting block 224 is threadedly connected to the sleeve 22, and four positioning blocks 227 are slidably connected to the outer wall of the adjusting block 224, and the positioning blocks 227 are slidably connected to the mounting seat 21, and the adjusting block 224 is used to drive the positioning blocks 227, and the positioning blocks 227 are used to support the positioning holes of the casting; an external thread 223 is provided on the sleeve 22, and a threaded hole 225 is provided on the adjusting block 224, and the external thread 223 is threadedly connected to the threaded hole 225, and the external thread 223 is used to cooperate with the threaded hole 225 to realize the threaded connection between the sleeve 22 and the adjusting block 224;Four first guide slots 226 are evenly distributed on the outer wall of the adjustment block 224. Second guide blocks 228 are slidably connected within the first guide slots 226. The four second guide blocks 228 are fixedly connected to the positioning block 227. A second guide slot 229 is formed on the lower surface of the positioning block 227. The first guide block 214 is slidably connected within the second guide slots 229. Four second mounting slots 213 are evenly distributed on the mounting seat 21. The first guide slots 226 cooperate with the second guide blocks 228, allowing the adjustment block 224 to drive the positioning block 227. The second guide slots 229 cooperate with the first guide blocks 214 to guide the positioning block 227. A second limiting flange 222 is fixedly connected to the sleeve 22 and is disposed at the bottom end of the external thread 223. The second limiting flange 222 is used to limit the downward position of the adjustment block 224.

[0025] Working principle: When using the utility model to position and clamp the aluminum shell casting, first install the positioning pin assembly 2 in the first mounting hole 11 on the base plate 1 according to the position of the positioning hole of the casting. When installing, the fixing seat 23 can be directly inserted into the first mounting hole 11, so that under the elastic action of the spring piece 231, the clamping block 232 is automatically clamped in the first mounting hole 11. If the positioning pin assembly 2 needs to be removed, the connecting rod 234 can be pressed. The connecting rod 234 slides down along the inner wall of the through hole on the knob 24, and the connecting rod 234 pushes the trigger member 235. The trigger member 235 pushes the block 232 through the inclined groove 233, causing the spring 231 to bend and deform, thereby causing the block 232 to move toward the center of the trigger member 235, so that the block 232 is separated from the first mounting hole 11, and the positioning pin assembly 2 can be taken out. After loosening the connecting rod 234, the trigger member 235 will automatically reset under the reset action of the spring 231; if it is necessary to adjust the positioning pin assembly 2 to make it fit the positioning hole, the knob 24 can be turned, and the knob 24 drives the sleeve 22 to rotate, and the sleeve 22 drives the adjustment through the external thread 223 The adjusting block 224 moves downward, drives the second guide block 228 through the first guide groove 226, and the positioning block 227 on the second guide block 228 moves accordingly. The positioning block 227 moves along the first guide block 214 through the second guide groove 229, so that the positioning block 227 fits the positioning hole; wherein, the second mounting hole 211 on the mounting seat 21 is used to accommodate the sleeve 22, the retaining spring 215 cooperates with the first limiting flange 221 to prevent the sleeve 22 from moving axially, and the first mounting groove 212 is used to install the fixing seat 23. The second mounting groove 213 is used to install the first guide block 214, the second limiting flange 222 is used to limit the downward position of the adjustment block 224, the threaded hole 225 is used to cooperate with the external thread 223 to realize the threaded connection between the sleeve 22 and the adjustment block 224, and the third limiting flange 236 is used to limit the upward position of the trigger member 235; when assembling the positioning pin assembly 2, the adjustment block 224 can be installed on the sleeve 22 first, and then the four positioning blocks 227 can be installed on the adjustment block 224 in turn, and the sleeve 22 can be installed on the mounting seat 21. In the second mounting hole 211, the retaining spring 215 is used to limit the position, and the position of the positioning block 227 is adjusted so that the second guide groove 229 is aligned with the second mounting groove 213. Then the first guide block 214 is inserted into the second guide groove 229, and the first guide block 214 is fixed in the second mounting groove 213. The trigger member 235 is placed in the inclined groove 233, and the fixing seat 23 is fixed in the first mounting groove 212 so that the connecting rod 234 is sleeved in the sleeve 22. Finally, the knob 24 is fixed to the top of the sleeve 22, and the connecting rod 234 is passed through the through hole on the knob 24 to complete the assembly of the positioning pin assembly 2.

[0026] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0027] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one location or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of the present embodiment. Persons of ordinary skill in the art will be able to understand and implement the present invention without inventive effort.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A positioning and clamping mechanism for aluminum shell die casting, comprising a base plate (1), characterized in that: A positioning pin assembly (2) is mounted on the substrate (1), and the positioning pin assembly (2) comprises a mounting seat (21), a first mounting groove (212) is provided on the lower surface of the mounting seat (21), a fixing seat (23) is fixedly connected in the first mounting groove (212), a plurality of spring pieces (231) are fixedly connected to the lower surface of the fixing seat (23), a clamping block (232) is fixedly connected to the lower surface of each spring piece (231), an oblique groove (233) is provided on the clamping block (232), a second mounting hole (211) is provided in the mounting seat (21), a sleeve (22) is rotatably connected in the second mounting hole (211), a knob (24) is fixedly connected to the top end of the sleeve (22), a connecting rod (234) is slidably connected in the knob (24), a triggering member (235) is fixedly connected to the bottom end of the connecting rod (234), and the triggering member (235) is sleeved in the oblique groove (233).

2. The positioning and clamping mechanism for aluminum shell die casting according to claim 1, characterized in that: A plurality of first mounting holes (11) are evenly distributed on the base plate (1), and the clamping blocks (232) are clamped in the first mounting holes (11).

3. The positioning and clamping mechanism for aluminum shell die casting according to claim 1, characterized in that: A third limiting flange (236) is fixedly connected to the trigger member (235), and the third limiting flange (236) is arranged at the bottom end of the sleeve (22).

4. The positioning and clamping mechanism for aluminum shell die casting according to claim 3, characterized in that: A retaining spring (215) is installed on the sleeve (22), and the retaining spring (215) is sleeved in the second mounting hole (211).

5. The positioning and clamping mechanism for aluminum shell die casting according to claim 4, characterized in that: A first limiting flange (221) is fixedly connected to the sleeve (22), and the first limiting flange (221) is arranged on the top of the mounting seat (21).

6. The positioning and clamping mechanism for aluminum shell die-casting according to claim 5, characterized in that: The sleeve (22) is threadedly connected to an adjusting block (224), and four positioning blocks (227) are slidably connected to the outer wall of the adjusting block (224), and the positioning blocks (227) are slidably connected to the mounting seat (21).

7. The positioning and clamping mechanism for aluminum shell die casting according to claim 6, characterized in that: The sleeve (22) is provided with an external thread (223), the adjustment block (224) is provided with a threaded hole (225), and the external thread (223) is threadedly connected to the threaded hole (225).

8. The positioning and clamping mechanism for aluminum shell die casting according to claim 6, characterized in that: Four first guide grooves (226) are evenly distributed on the outer wall of the adjustment block (224), a second guide block (228) is slidably connected in the first guide groove (226), and the four second guide blocks (228) are fixedly connected to the positioning block (227), a second guide groove (229) is provided on the lower surface of the positioning block (227), a first guide block (214) is slidably connected in the second guide groove (229), four second mounting grooves (213) are evenly distributed on the mounting seat (21), and the first guide block (214) is fixedly connected in the second mounting groove (213).

9. The positioning and clamping mechanism for aluminum shell die casting according to claim 7, characterized in that: A second limiting flange (222) is fixedly connected to the sleeve (22), and the second limiting flange (222) is arranged at the bottom end of the external thread (223).

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