Efficient grinding wheel forming die

Abstract

The invention discloses an efficient grinding wheel forming die. Comprising a base plate, a first through hole, a lower die assembly, a first sleeve, a first flange, a second through hole, an external thread, a limiting sleeve, a first internal thread, a first screw, a sliding rod, a threaded sleeve, a baffle, a third through hole, a guide sleeve, a guide rod, a fixing rod, a first gear, a second gear, a rotating shaft, a wrench groove, a fixing base, a second screw, a neck bush, a check ring, a guide hole, a second internal thread and an upper die. The mold cavity part is composed of the neck bush and the baffle, the neck bush and the first sleeve are designed in a split mode, the neck bush can be directly replaced after being abraded, the whole lower mold assembly is prevented from being scrapped, cost is saved, the baffle is designed in a movable mode, a grinding wheel blank can be ejected out of the mold cavity, demolding is more convenient, and the machining efficiency is improved. The upper die is designed at the bottom of the lower die assembly, so that the forming die can be stacked in multiple layers, multiple grinding wheel blanks can be pressed at a time, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of grinding wheel manufacturing technology, specifically to a high-efficiency grinding wheel forming mold. Background Technology

[0002] Grinding wheels are bonded abrasives formed by binding ordinary abrasives with a binder, resulting in a specific shape and strength. Grinding wheels are obtained by pressing, drying, and firing mixed raw materials. The forming mold is an essential tool in the pressing process. Existing grinding wheel forming molds have the following drawbacks: First, due to the upper and lower mold structure design, the formed grinding wheel blank is tightly fitted to the side wall of the lower mold cavity, making demolding difficult. Second, the forming mold is generally designed individually, meaning only one grinding wheel blank can be formed at a time, thus hindering efficient production. Third, during the pressing process, the side wall of the lower mold cavity rubs against the abrasive, causing wear after a period of use. Since the existing lower mold and mold cavity are integrated, wear of the mold cavity directly leads to the scrapping of the entire lower mold, increasing mold costs. Summary of the Invention

[0003] The purpose of this invention is to provide a high-efficiency forming mold for grinding wheels to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a high-efficiency grinding wheel forming mold, comprising a base plate, an upper mold mounted on the bottom end of the base plate, and a lower mold assembly mounted on the top end of the base plate. The lower mold assembly includes a first sleeve, which is fixedly connected to the upper surface of the base plate. A limiting sleeve is fixedly connected inside the first sleeve, and a threaded sleeve is threadedly connected inside the limiting sleeve. A baffle is fixedly connected to the upper surface of the threaded sleeve and is disposed at the top end of the limiting sleeve. A third through hole is provided at the center of the upper surface of the baffle. A guide sleeve is fixedly connected to the lower surface of the baffle at the position corresponding to the third through hole. A guide rod is slidably connected inside the guide sleeve and is rotatably connected to the base plate. A first gear is fixedly connected to the bottom end of the guide rod. A second gear is meshed with the first gear. A rotating shaft is fixedly connected to the second gear. A fixed seat is sleeved on the rotating shaft and is fixedly connected to the upper mold.

[0005] Preferably, the inner wall of the limiting sleeve is provided with a first internal thread, and the threaded sleeve is threadedly connected to the first internal thread.

[0006] Preferably, a second screw is installed on the fixing seat, and the second screw is threadedly connected to the upper mold.

[0007] Preferably, the outer wall of the substrate is provided with a plurality of first through holes, a first flange is fixedly connected to the first sleeve, a second through hole is provided at the position of the first flange corresponding to the first through hole, a second flange is fixedly connected to the upper mold, a fourth through hole is provided at the position of the second flange corresponding to the first through hole, a first screw is installed in the second through hole, and the first screw passes through the corresponding first through hole and the fourth through hole, a sliding rod is threadedly connected to the first screw, and the sliding rod is located at the bottom end of the second flange.

[0008] Preferably, a fifth through hole is provided on one side of the outer wall of the upper mold, and the rotating shaft is sleeved in the fifth through hole.

[0009] Preferably, one end of the rotating shaft has a wrench groove.

[0010] Preferably, an inner liner is fitted onto the baffle, and the inner liner is fitted inside the first sleeve. A retaining ring is provided at the top of the inner liner, and the retaining ring is threaded onto the first sleeve.

[0011] Preferably, a guide hole is provided on the retaining ring at the position corresponding to the slide rod.

[0012] Preferably, the outer wall of the first sleeve is provided with an external thread, and the inner wall of the retaining ring is provided with a second internal thread, and the second internal thread is threadedly connected to the external thread.

[0013] Preferably, a fixing rod is fixedly connected to the top end of the guide rod, and the fixing rod is sleeved in the third through hole.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: The mold cavity of the present invention is composed of an inner bushing and a baffle. The inner bushing and the first sleeve are designed separately. The inner bushing can be directly replaced after wear, avoiding the scrapping of the entire lower mold assembly and saving costs. The baffle is designed to be movable, which can push the grinding wheel blank out of the mold cavity, making demolding more convenient. The present invention designs the upper mold at the bottom of the lower mold assembly, so that the forming mold can be stacked in multiple layers, thereby realizing the pressing of multiple grinding wheel blanks at one time, which greatly improves production efficiency. Attached Figure Description

[0015] Figure 1 This is an exploded view of the overall structure of the present invention;

[0016] Figure 2 for Figure 1 Enlarged view of the structure of region A in the middle;

[0017] Figure 3 for Figure 1 Enlarged view of the structure of region B in the middle;

[0018] Figure 4 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0019] Figure 5 This is a three-dimensional structural diagram of the present invention in its stacked state;

[0020] Figure 6 This is a schematic diagram of the overall three-dimensional cross-sectional structure of the present invention;

[0021] Figure 7 This is a schematic diagram of the three-dimensional cross-sectional structure of the threaded sleeve of the present invention;

[0022] Figure 8 This is a schematic diagram of the three-dimensional cross-sectional structure of the first sleeve of the present invention;

[0023] Figure 9 This is a schematic diagram of the three-dimensional cross-sectional structure of the upper mold of the present invention.

[0024] In the diagram: 1. Base plate; 11. First through hole; 2. Lower mold assembly; 21. First sleeve; 211. First flange; 212. Second through hole; 213. External thread; 214. Limiting sleeve; 215. First internal thread; 22. First screw; 221. Sliding rod; 23. Threaded sleeve; 231. Baffle; 232. Third through hole; 233. Guide sleeve; 24. Guide rod; 241. Fixing rod; 242. First gear; 243. Second gear; 244. Rotating shaft; 245. Wrench groove; 246. Fixing seat; 247. Second screw; 25. Inner bushing; 26. Retaining ring; 261. Guide hole; 262. Second internal thread; 3. Upper mold; 31. Second flange; 311. Fourth through hole; 32. Fifth through hole. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figure 1-9An embodiment of the present invention provides a high-efficiency forming mold for grinding wheels, comprising a base plate 1, an upper mold 3 mounted on the bottom end of the base plate 1, and a lower mold assembly 2 mounted on the top end of the base plate 1. The lower mold assembly 2 includes a first sleeve 21, which is fixedly connected to the upper surface of the base plate 1. A limiting sleeve 214 is fixedly connected inside the first sleeve 21, and a threaded sleeve 23 is threadedly connected inside the limiting sleeve 214. A baffle 231 is fixedly connected to the upper surface of the threaded sleeve 23, and the baffle 231 is disposed at the top end of the limiting sleeve 214. A third through hole 232 is opened at the center position of the upper surface of the baffle 231. A guide sleeve 233 is fixedly connected to the lower surface of the baffle 231 at the position corresponding to the third through hole 232. A guide rod 24 is slidably connected inside the guide sleeve 233. 4. Rotatably connected to the base plate 1, the guide rod 24 has a first gear 242 fixedly connected to its bottom end, the first gear 242 meshing with a second gear 243, a rotating shaft 244 fixedly connected to the second gear 243, and a fixed seat 246 sleeved on the rotating shaft 244, which is fixedly connected to the upper mold 3. The lower mold assembly 2 and the upper mold 3 are respectively set at the top and bottom of the base plate 1, which can realize the stacking of forming molds and realize the pressing of multiple blanks at one time. Rotating the rotating shaft 244 can drive the second gear 243, which in turn drives the guide rod 24 to rotate via the first gear 242. The guide rod 24 has a non-cylindrical structure, so it can drive the guide sleeve 233 on it to rotate. The guide sleeve 233 drives the threaded sleeve 23 via the baffle 231. The threaded sleeve 23 and the limiting sleeve 214 are threaded together. Therefore, when the limiting sleeve 214 is fixed, the threaded sleeve 23 can rotate and rise, thereby raising the baffle 231 and ejecting the grinding wheel blank. A first internal thread 215 is provided on the inner wall of the limiting sleeve 214, and the threaded sleeve 23 is threadedly connected to the first internal thread 215. The first internal thread 215 and the threaded sleeve 23 cooperate, so that when the limiting sleeve 214 is stationary, the rotating threaded sleeve 23 can perform a lifting and lowering action. A second screw 247 is installed on the fixing seat 246, and the second screw 247 is threadedly connected to the upper mold 3. The second screw 247 is used to fix the fixing seat 246 to the upper mold 3. A plurality of first through holes 11 are provided on the outer wall of the base plate 1, and the first sleeve 21 is fixed with... A first flange 211 is fixedly connected to the upper mold 3. A second through hole 212 is opened at the position of the first through hole 11 on the first flange 211. A second flange 31 is fixedly connected to the upper mold 3. A fourth through hole 311 is opened at the position of the first through hole 11 on the second flange 31. A first screw 22 is installed in the second through hole 212 and passes through the corresponding first through hole 11 and fourth through hole 311. A slide rod 221 is threadedly connected to the first screw 22 and is located at the bottom end of the second flange 31. The first through hole 11, the second through hole 212 and the fourth through hole 311 are used to install the first screw 22. The first screw 22 cooperates with the slide rod 221 to achieve tight locking and fixing of the first flange 211, the substrate 1 and the second flange 31.A fifth through hole 32 is provided on one side of the outer wall of the upper mold 3, and the rotating shaft 244 is sleeved in the fifth through hole 32. The fifth through hole 32 is used to accommodate the rotating shaft 244 and also to insert a wrench. A wrench groove 245 is provided at one end of the rotating shaft 244. The wrench groove 245 is used to cooperate with the wrench to facilitate the rotation of the rotating shaft 244. An inner bushing 25 is sleeved on the baffle 231 and is sleeved in the first sleeve 21. A retaining ring 26 is provided at the top of the inner bushing 25 and is threaded to the first sleeve 21. The inner bushing 25 and the first sleeve 21 are designed separately and can be replaced. The retaining ring 26 is used to limit the position of the inner bushing 25. The retaining ring 26 is positioned corresponding to the position of the slide rod 221. A guide hole 261 is provided to guide the sliding rod 221, thereby achieving positioning between the forming molds. An external thread 213 is provided on the outer wall of the first sleeve 21, and a second internal thread 262 is provided on the inner wall of the retaining ring 26. The second internal thread 262 is threaded onto the external thread 213, and the external thread 213 cooperates with the second internal thread 262 to achieve a threaded connection between the first sleeve 21 and the retaining ring 26, thus facilitating the assembly and disassembly of the retaining ring 26. A fixing rod 241 is fixedly connected to the top of the guide rod 24, and the fixing rod 241 is sleeved within a third through hole 232. The third through hole 232 is used to accommodate the fixing rod 241, and the fixing rod 241 is used to pre-drill a center hole on the grinding wheel blank.

[0027] Working principle: When using this invention to produce grinding wheels, the mixed abrasive is first filled into the mold cavity formed by the baffle 231 and the inner sleeve 25. Then, the abrasive is leveled to distribute it evenly within the mold cavity. Next, the forming molds are stacked, i.e., the slide rod 221 is inserted into the guide hole 261 of another forming mold, so that the upper mold 3 and the lower mold assembly 2 are closed. Then, this stack of forming molds is transferred to a hydraulic device, and pressure is applied to the forming molds from top to bottom, so that the abrasive in the mold cavity is shaped to obtain a grinding wheel blank. In this way, multiple parts can be obtained from one blank pressing. The grinding wheel blank has an upper die 3 installed at the output end of the hydraulic device to cooperate with the uppermost lower die assembly 2. The lowermost upper die 3 is supported by a support base. After the blank is pressed, the forming molds are removed one by one. The first sleeve 21 is fixed with one hand, and the wrench is inserted into the wrench slot 245 with the other hand. Turning the wrench drives the rotating shaft 244 to rotate. The second gear 243 on the rotating shaft 244 rotates accordingly. The second gear 243 drives the guide rod 24 to rotate via the first gear 242. The guide rod 24 drives the baffle 231 to rotate via the guide sleeve 233. The threaded sleeve on the baffle 231... As 23 rotates, the threaded sleeve 23 rotates and rises along the first internal thread 215, pushing the grinding wheel blank out of the mold cavity, thus achieving demolding. After demolding, the rotating shaft 244 is turned in the opposite direction to reset the baffle 231. When the inner bushing 25 needs to be replaced due to wear, the retaining ring 26 can be unscrewed and the inner bushing 25 can be removed for replacement. Among them, the limiting sleeve 214 and the first sleeve 21 are integral structures. The base plate 1 is used to install the guide rod 24. The first through hole 11, the second through hole 212 and the fourth through hole 311 are used to install the first screw 22. The first screw 22 is engaged with... The slide bar 221 can lock and fix the first flange 211, the base plate 1 and the second flange 31. The external thread 213 is used to cooperate with the second internal thread 262 to realize the threaded connection between the retaining ring 26 and the first sleeve 21, which facilitates the disassembly and assembly of the retaining ring 26. The third through hole 232 is used to accommodate the fixing rod 241. The fixing rod 241 is used to reserve a center hole on the grinding wheel blank. The fixing seat 246 is used to install the rotating shaft 244. The second screw 247 is used to fix the fixing seat 246 on the upper mold 3. The fifth through hole 32 is used to accommodate the rotating shaft 244 and is also used to insert a wrench.

[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-efficiency forming die for a grinding wheel, comprising a base plate (1), characterized in that: The substrate (1) is equipped with an upper mold (3) at its bottom end and a lower mold assembly (2) at its top end. The lower mold assembly (2) includes a first sleeve (21) which is fixedly connected to the upper surface of the substrate (1). A limiting sleeve (214) is fixedly connected inside the first sleeve (21). A threaded sleeve (23) is threadedly connected inside the limiting sleeve (214). A baffle (231) is fixedly connected to the upper surface of the threaded sleeve (23), and the baffle (231) is located at the top end of the limiting sleeve (214). A third through hole (232) is opened at the center of the upper surface of the baffle (231). A guide sleeve (233) is fixedly connected to the lower surface of the baffle (231) at the position corresponding to the third through hole (232). A guide rod (24) is slidably connected inside the guide sleeve (233), and the guide rod (24) is rotatably connected to the base plate (1). A first gear (242) is fixedly connected to the bottom end of the guide rod (24). The first gear (242) is meshed with a second gear (243). A rotating shaft (244) is fixedly connected to the second gear (243). A fixed seat (246) is sleeved on the rotating shaft (244), and the fixed seat (246) is fixedly connected to the upper mold (3).

2. The high-efficiency forming mold for grinding wheels according to claim 1, characterized in that: The inner wall of the limiting sleeve (214) is provided with a first internal thread (215), and the threaded sleeve (23) is threadedly connected to the first internal thread (215).

3. The high-efficiency forming mold for grinding wheels according to claim 1, characterized in that: The fixing seat (246) is equipped with a second screw (247), and the second screw (247) is threaded onto the upper mold (3).

4. The high-efficiency forming mold for grinding wheels of claim 1, wherein: The outer wall of the substrate (1) is provided with a plurality of first through holes (11), a first flange (211) is fixedly connected to the first sleeve (21), a second through hole (212) is provided at the position of the first through hole (11) on the first flange (211), a second flange (31) is fixedly connected to the upper mold (3), a fourth through hole (311) is provided at the position of the first through hole (11) on the second flange (31), a first screw (22) is installed in the second through hole (212), and the first screw (22) passes through the corresponding first through hole (11) and the fourth through hole (311), a slide rod (221) is threadedly connected to the first screw (22), and the slide rod (221) is located at the bottom end of the second flange (31).

5. The high-efficiency forming mold for grinding wheels of claim 1, wherein: A fifth through hole (32) is provided on one side of the outer wall of the upper mold (3), and the rotating shaft (244) is sleeved in the fifth through hole (32).

6. The high-efficiency forming mold for grinding wheels of claim 5, wherein: A wrench groove (245) is provided at one end of the rotating shaft (244).

7. The high-efficiency forming mold for grinding wheels of claim 1, wherein: An inner liner (25) is fitted onto the baffle (231), and the inner liner (25) is fitted into the first sleeve (21). A retaining ring (26) is provided at the top of the inner liner (25), and the retaining ring (26) is threaded onto the first sleeve (21).

8. The high-efficiency forming mold for grinding wheels of claim 7, wherein: The retaining ring (26) has a guide hole (261) at the position corresponding to the slide rod (221).

9. The high-efficiency forming mold for grinding wheels of claim 7, wherein: The outer wall of the first sleeve (21) is provided with an external thread (213), and the inner wall of the retaining ring (26) is provided with a second internal thread (262), and the second internal thread (262) is threadedly connected to the external thread (213).

10. The high-efficiency forming mold for grinding wheels according to claim 1, characterized in that: The top end of the guide rod (24) is fixedly connected with a fixed rod (241), and the fixed rod (241) is sleeved in the third through hole (232).

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