Hydraulic trimming die for die castings

Abstract

The utility model discloses a hydraulic trimming die for die castings, and particularly relates to the technical field of die casting trimming, which comprises a lower die, an upper die is clamped at the top of the lower die, a cover plate is telescopically arranged at the bottom of the upper die, a first compression mechanism is fixedly arranged at the top of the cover plate, and a bottom plate is telescopically arranged at the top of the lower die. The cover plate is tightly arranged on the outer side of the bottom plate in a sleeving mode, a fixing groove is fixedly formed between the cover plate and the bottom plate, the cover plate and the bottom plate tightly wrap a die casting through the fixing groove, and an edge cutter is fixedly arranged at the position, above the protruding block, of the bottom of the upper die. The upper die is connected with the hydraulic rod at first, then the die casting is placed on the inner side of the fixing groove in the top of the bottom plate, then the upper die is controlled to drive the cover plate to descend so as to press and fix the die casting, and finally the convex block is cut off through the edge cutter, so that the placing operation of the die casting is effectively facilitated, and the edge cutting efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of trimming of die-castings, and more specifically, to a hydraulic trimming die for die-castings. Background Art

[0002] In die-casting molding technology, when designing a die-casting mold, the cavity of the product, the runner, the slag pocket, etc. are often set as a whole. In this way, the product produced often has redundant runner margins, slag pocket margins, etc. on one side, and subsequent trimming and grinding are required.

[0003] After retrieval, the existing patent (publication number: CN214161348U) discloses a hydraulic trimming die for die-castings, including a workbench frame, a hydraulic system, an upper trimming die, a fixed seat and a workpiece fixing device. The upper trimming die is arranged below the hydraulic system. The upper trimming die includes a transmission disk, a trimming cutter disk and trimming knives. A fixed seat is arranged on the workbench frame below the upper trimming die. Workpiece fixing devices are arranged on the adjusting columns on both sides of the fixed seat. The upper trimming die of this trimming die is composed of a transmission disk, a trimming cutter disk and trimming knives. The trimming knives are arranged in a ring shape on the trimming cutter disk through moving blocks, and can trim the margins on a long-tube die-casting at one time. Moreover, the upper trimming die can be adapted to the trimming operations of long-tube die-castings with different pipe diameters. By setting the fixed seat and the workpiece fixing device, long-tube die-castings with different pipe diameters can be stably fixed, and the adjusting columns can meet the trimming operations of the upper trimming die for long-tube die-castings with different lengths.

[0004] The above comparative document and the prior art have the following problems. When trimming the redundant protrusions on one side of the die-casting, it is necessary to manually place the die-casting in a matching fixed cover plate for pressing and fixing, which is very cumbersome. And the convex blocks are very easy to fly out at the moment of trimming, which is very dangerous. Therefore, in order to solve the above problems, a hydraulic trimming die for die-castings is very necessary. Summary of the Utility Model

[0005] The main technical problem to be solved by the utility model is to provide a hydraulic trimming die for die-castings, which can solve the problems raised in the above background art.

[0006] To solve the above technical problem, according to one aspect of the utility model, more specifically, a hydraulic trimming die for die-castings includes a lower die. An upper die is snap-fitted on the top of the lower die. A cover plate is telescopically arranged at the bottom of the upper die. A first compression mechanism is fixedly arranged on the top of the cover plate. A bottom plate is telescopically arranged at the top of the lower die. The cover plate is tightly sleeved outside the bottom plate. A fixing groove is fixedly arranged between the cover plate and the bottom plate. The cover plate and the bottom plate tightly wrap a die-casting through the fixing groove. A convex block is fixedly arranged on one side of the die-casting. A trimming knife is fixedly arranged above the convex block at the bottom of the upper die.

[0007] Furthermore, a material guiding plate is fixedly arranged at the top of the lower die below the convex block, a fixing block is telescopically arranged at the bottom of the upper die above the convex block, a second compression mechanism is fixedly arranged at the top of the fixing block, and the upper die and the fixing block tightly wrap the outside of the convex block.

[0008] Furthermore, the first compression mechanism includes four first connecting rods fixedly arranged at the top of the cover plate. The four first connecting rods are all slidably arranged at the top of the upper die. First springs are fixedly arranged at the tops of the four first connecting rods, and the tops of the four first springs are fixedly connected to the upper die.

[0009] Furthermore, the second compression mechanism includes two third connecting rods fixedly arranged at the top of the fixing block. The two third connecting rods are all slidably arranged at the bottom of the upper die. Third springs are fixedly arranged at the tops of the two third connecting rods, and the tops of the two third springs are fixedly connected to the upper die.

[0010] Furthermore, clamping blocks are fixedly arranged on both sides of the convex block at the top of the material guiding plate, and an inclined slope is fixedly arranged on one side of the top of the material guiding plate.

[0011] Furthermore, four second connecting rods are fixedly arranged at the bottom of the bottom plate. The four second connecting rods are all slidably arranged at the top of the lower die. Second springs are fixedly arranged at the bottoms of the four second connecting rods, and the bottoms of the four second springs are fixedly connected to the lower die.

[0012] Furthermore, four sliding rods are fixedly arranged at the top of the lower die. The upper die is slidably arranged outside the four sliding rods, and an arc chamfer is fixedly arranged inside the bottom plate.

[0013] The beneficial effects of the hydraulic trimming die for die-castings of the utility model are as follows:

[0014] By arranging the cover plate, the bottom plate and the fixing groove, when trimming is carried out, first connect the upper die with the hydraulic rod, then place the die-casting on the inner side of the fixing groove at the top of the bottom plate, then control the upper die to drive the cover plate to descend so as to press and fix the die-casting, and finally cut off the convex block through the trimming knife, effectively facilitating the placement operation of the die-casting and improving the trimming efficiency;

[0015] By setting a fixed block and a material guiding plate, when trimming the edge, the fixed block descends together with the upper die, and presses the convex block against the top of the material guiding plate. After the trimming knife cuts off the convex block, the fixed block and the material guiding plate fix the convex block, avoiding the occurrence of splashing, improving the safety during use. At the same time, by setting a second connecting rod and a second spring, when the cover plate presses the die casting, it will press the second connecting rod to compress the second spring, causing the bottom plate to descend. After cutting is completed, the upper die begins to rise, and the second spring pushes the bottom plate to drive the die casting and the convex block to separate, effectively facilitating the removal of the die casting and effectively improving the practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present utility model will be further described in detail below with reference to the drawings and specific implementation methods.

[0017] Figure 1 It is a schematic diagram of the overall structure of a hydraulic trimming die for a die casting of the present utility model;

[0018] Figure 2 It is a schematic diagram of the die casting placement structure of a hydraulic trimming die for a die casting of the present utility model;

[0019] Figure 3 It is a schematic diagram of the internal structure of a hydraulic trimming die for a die casting of the present utility model;

[0020] Figure 4 It is a schematic diagram of the cooperation structure between the cover plate and the bottom plate of a hydraulic trimming die for a die casting of the present utility model;

[0021] Figure 5 It is a schematic diagram of the fixed groove structure of a hydraulic trimming die for a die casting of the present utility model.

[0022] In the figure: 1, lower die; 10, slide bar; 11, material guiding plate; 12, clamping block; 2, upper die; 20, trimming knife; 3, cover plate; 30, first connecting rod; 31, first spring; 4, bottom plate; 40, second connecting rod; 41, second spring; 42, arc chamfer; 5, fixed block; 50, third connecting rod; 51, third spring; 6, die casting; 60, convex block; 7, fixed groove. SPECIFIC EMBODIMENTS

[0023] The present utility model will be described in detail below with reference to the drawings and in combination with embodiments. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0024] As Figures 1-5As shown in the figure, according to one aspect of the present utility model, a hydraulic trimming die for die-castings is provided, which includes a lower die 1. An upper die 2 is snap-fitted on the top of the lower die 1. A cover plate 3 is telescopically arranged at the bottom of the upper die 2. A first compression mechanism is fixedly arranged on the top of the cover plate 3. A bottom plate 4 is telescopically arranged at the top of the lower die 1. The cover plate 3 is tightly sleeved on the outside of the bottom plate 4. A fixing groove 7 is fixedly arranged between the cover plate 3 and the bottom plate 4. The cover plate 3 and the bottom plate 4 tightly wrap a die-casting 6 through the fixing groove 7. A convex block 60 is fixedly arranged on one side of the die-casting 6. A trimming knife 20 is fixedly arranged at the bottom of the upper die 2 above the convex block 60. By setting the cover plate 3, the bottom plate 4 and the fixing groove 7, during the trimming operation, first connect the upper die 2 with a hydraulic rod, then place the die-casting 6 inside the fixing groove 7 at the top of the bottom plate 4, and then control the upper die 2 to drive the cover plate 3 to descend to press and fix the die-casting 6. Finally, cut off the convex block 60 with the trimming knife 20, which effectively facilitates the placement operation of the die-casting 6 and improves the trimming efficiency.

[0025] In this embodiment, a guide plate 11 is fixedly arranged at the top of the lower die 1 below the convex block 60. A fixing block 5 is telescopically arranged at the bottom of the upper die 2 above the convex block 60. A second compression mechanism is fixedly arranged on the top of the fixing block 5. The upper die 2 and the fixing block 5 tightly wrap the outside of the convex block 60. By setting the fixing block 5 and the guide plate 11, during trimming, the fixing block 5 descends together with the upper die 2 and squeezes the convex block 60 on the top of the guide plate 11. When the trimming knife 20 cuts off the convex block 60, the fixing block 5 and the guide plate 11 fix the convex block 60 to avoid splashing, improving the safety during use.

[0026] In this embodiment, the first compression mechanism includes four first connecting rods 30 fixedly arranged on the top of the cover plate 3. The four first connecting rods 30 are all slidably arranged on the top of the upper die 2. First springs 31 are fixedly arranged on the tops of the four first connecting rods 30. The tops of the four first springs 31 are all fixedly connected with the upper die 2. Through the above settings, during the trimming process, the first springs 31 will squeeze the cover plate 3 so that the cover plate 3 and the bottom plate 4 are always in a snap-fitted state, improving the stability of trimming.

[0027] In this embodiment, the second compression mechanism includes two third connecting rods 50 fixedly arranged on the top of the fixing block 5. The two third connecting rods 50 are all slidably arranged at the bottom of the upper die 2. Third springs 51 are fixedly arranged on the tops of the two third connecting rods 50. The tops of the two third springs 51 are all fixedly connected with the upper die 2. Through the above settings, during trimming, the fixing block 5 and the guide plate 11 will maintain the clamping of the convex block 60, further improving the stability of trimming.

[0028] In this embodiment, clamping blocks 12 are fixedly arranged on both sides of the bump 60 at the top of the material guide plate 11, and an inclined slope is fixedly arranged on one side of the top of the material guide plate 11. Through the above arrangement, the stability of the fixation of the bump 60 is improved, and after the trimming is completed, the bump 60 is directly removed through the material guide plate 11, avoiding the accumulation of the bump 60 during repeated use.

[0029] In this embodiment, four second connecting rods 40 are fixedly arranged at the bottom of the bottom plate 4. The four second connecting rods 40 are all slidably arranged on the top of the lower die 1. Second springs 41 are fixedly arranged at the bottoms of the four second connecting rods 40. The bottoms of the four second springs 41 are fixedly connected to the lower die 1. By arranging the second connecting rods 40 and the second springs 41, when the cover plate 3 extrudes the die casting 6, the second connecting rods 40 will be extruded to compress the second springs 41, causing the bottom plate 4 to descend. After the cutting is completed, the upper die 2 starts to rise, and the second springs 41 push the bottom plate 4 to drive the die casting 6 and the bump 60 to separate, effectively facilitating the removal of the die casting 6.

[0030] In this embodiment, four sliding rods 10 are fixedly arranged at the top of the lower die 1. The upper die 2 is slidably arranged outside the four sliding rods 10. An arc chamfer 42 is fixedly arranged inside the bottom plate 4. By arranging the sliding rods 10, the tightness of the cooperation between the upper die 2 and the lower die 1 is ensured, and the stability during the fixation of the die casting 6 is improved through the arc chamfer 42.

[0031] The working principle of this device is as follows: When performing the trimming operation, first connect the upper die 2 to the hydraulic rod, then place the die casting 6 inside the fixing groove 7 at the top of the bottom plate 4, and then control the upper die 2 to drive the cover plate 3 to descend to press and fix the die casting 6. Finally, the bump 60 is cut off by the trimming knife 20, effectively facilitating the placement operation of the die casting 6, improving the trimming efficiency, and during the trimming, the fixing block 5 descends together with the upper die 2 and presses the bump 60 against the top of the material guide plate 11. When the trimming knife 20 cuts off the bump 60, the fixing block 5 and the material guide plate 11 fix the bump 60 to avoid splashing, improving the safety during use.

[0032] All the electrical components mentioned herein are electrical components existing in reality.

[0033] Certainly, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples either. Changes, modifications, additions, or substitutions made by those of ordinary skill in the art within the scope of the essence of the present invention also belong to the protection scope of the present invention.

Claims

1. A hydraulic trimming die for die castings, comprising a lower die (1), characterized in that: The top of the lower mold (1) is engaged with the upper mold (2), the bottom of the upper mold (2) is telescopically provided with a cover plate (3), the top of the cover plate (3) is fixedly provided with a first compression mechanism, the top of the lower mold (1) is telescopically provided with a bottom plate (4), the cover plate (3) is tightly sleeved on the outside of the bottom plate (4), a fixing groove (7) is fixedly provided between the cover plate (3) and the bottom plate (4), the cover plate (3) and the bottom plate (4) are tightly wrapped with a die casting (6) through the fixing groove (7), a convex block (60) is fixedly provided on one side of the die casting (6), and a trimming knife (20) is fixedly provided above the convex block (60) at the bottom of the upper mold (2).

2. The hydraulic trimming die for die casting according to claim 1, characterized in that: A material guide plate (11) is fixedly arranged at the top of the lower mold (1) below the protrusion (60), a fixed block (5) is telescopically arranged at the bottom of the upper mold (2) above the protrusion (60), a second compression mechanism is fixedly arranged at the top of the fixed block (5), and the upper mold (2) and the fixed block (5) are tightly wrapped around the outside of the protrusion (60).

3. The hydraulic trimming die for die casting according to claim 1, characterized in that: The first compression mechanism comprises four first connecting rods (30) fixedly arranged on the top of the cover plate (3), the four first connecting rods (30) are slidably arranged on the top of the upper mold (2), the tops of the four first connecting rods (30) are fixedly arranged with first springs (31), and the tops of the four first springs (31) are fixedly connected to the upper mold (2).

4. The hydraulic trimming die for die casting according to claim 2, characterized in that: The second compression mechanism comprises two third connecting rods (50) fixedly arranged on the top of the fixed block (5), the two third connecting rods (50) are slidably arranged on the bottom of the upper mold (2), the tops of the two third connecting rods (50) are fixedly arranged with third springs (51), and the tops of the two third springs (51) are fixedly connected to the upper mold (2).

5. The hydraulic trimming die for die casting according to claim 4, characterized in that: The top of the guide plate (11) is fixedly provided with clamping blocks (12) on both sides of the protrusion (60), and one side of the top of the guide plate (11) is fixedly provided with an inclined slope.

6. The hydraulic trimming die for die casting according to claim 1, characterized in that: Four second connecting rods (40) are fixedly arranged at the bottom of the base plate (4), and the four second connecting rods (40) are slidably arranged on the top of the lower mold (1). Second springs (41) are fixedly arranged at the bottom of the four second connecting rods (40), and the bottoms of the four second springs (41) are fixedly connected to the lower mold (1).

7. The hydraulic trimming die for die casting according to claim 1, characterized in that: Four sliding rods (10) are fixedly arranged on the top of the lower mold (1), the upper mold (2) is slidably arranged outside the four sliding rods (10), and a circular arc chamfer (42) is fixedly arranged on the inner side of the bottom plate (4).

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