Hot pressing die of corrugated tool bit and die dismounting tool

Abstract

The utility model provides a hot-pressing die of a corrugated tool bit and a die dismounting tool, and belongs to the technical field of hot-pressing dies, and the hot-pressing die of the corrugated tool bit comprises a lower die and an upper die. The lower die is provided with a hot pressing groove, the bottom face in the hot pressing groove is provided with a plurality of first press-in parts protruding upwards, and the first press-in parts are of a long-strip-shaped structure. The bottom face of the upper die is provided with a plurality of second press-in parts protruding downwards, and the second press-in parts are of a long-strip-shaped structure. The first press-in part and the second press-in part are used for being pressed into grooves in the two side faces of a tool bit blank respectively. According to the hot-pressing die for the corrugated tool bits and the die dismounting tool, the multiple corrugated tool bits can be sintered at a time without stacking multiple pressing heads, so that the situation that when the multiple pressing heads are stacked and the multiple corrugated tool bits are subjected to hot-pressing sintering at a time, the stacking process is tedious can be avoided; and in addition, the dumping risk exists in the stacking process.

Description

Technical Field

[0001] This utility model belongs to the field of hot pressing mold technology, and more specifically, it relates to a hot pressing mold with a corrugated cutter head and a mold disassembly tooling. Background Technology

[0002] One type of diamond saw tip is the corrugated saw tip, which has several grooves on both sides. This effectively reduces the contact area between the sides of the saw tip and the material being cut, thereby reducing friction during sawing.

[0003] In the production of corrugated cutter heads, the cold-pressed cutter head blanks with grooves on both sides need to be hot-pressed and sintered. Traditional hot-pressing and sintering processes for corrugated cutter heads require two press heads to compress the blanks. Each press head has several pressing sections for pressing into the grooves of the blank. To hot-press and sinter multiple corrugated cutter heads at once, each pair of press heads forms a hot-pressing unit, and multiple press heads are stacked, with a cutter head blank placed between each pair of press heads. This stacking process is cumbersome and carries the risk of tipping over. Utility Model Content

[0004] The purpose of this utility model is to provide a hot pressing mold and demolding fixture for corrugated cutter heads, which aims to solve the problem that when multiple press heads are stacked up to sinter multiple corrugated cutter heads in one hot pressing, the stacking process is cumbersome and there is a risk of tipping over during the stacking process.

[0005] In a first aspect, this utility model provides a hot-pressing mold for a corrugated cutter head, comprising a lower mold and an upper mold. The upper surface of the lower mold is provided with a hot-pressing groove, and the bottom surface of the hot-pressing groove has a plurality of upwardly protruding first pressing portions. These first pressing portions are arranged sequentially along a first horizontal direction, and each first pressing portion has an elongated structure with its length direction aligned with a second horizontal direction, which is perpendicular to the first horizontal direction. The bottom surface of the upper mold has a plurality of downwardly protruding second pressing portions, and these second pressing portions are arranged sequentially along the first horizontal direction. Each second pressing portion has an elongated structure with its length direction aligned with the second horizontal direction. The first pressing portions and the second pressing portions are respectively used to press into grooves on two sides of the cutter head blank.

[0006] The solution shown in this application, compared with the prior art, involves placing multiple cutter blanks into a hot pressing groove and arranging them sequentially along the length of the first pressing portion. At this time, several first pressing portions are pressed into several grooves on one side of the cutter blank. Then, several second pressing portions on the upper mold are pressed into several grooves on the other side of the cutter blank. Finally, the mold is placed on a hot pressing sintering machine for hot pressing sintering. Since multiple corrugated cutters can be sintered at once without stacking multiple pressing heads, the cumbersome stacking process and the risk of tipping during stacking are avoided.

[0007] In conjunction with the first aspect, in one possible implementation, the lower mold is provided with a plurality of guide holes with vertically arranged axis lines, and a guide shaft is slidably inserted in each guide hole, the guide shaft being fixedly connected to the upper mold.

[0008] In conjunction with the first aspect, in one possible implementation, the length of the guide shaft is less than the length of the guide hole.

[0009] In conjunction with the first aspect, in one possible implementation, the upper mold is provided with two notches, through which the upper surface of the lower mold is exposed.

[0010] In conjunction with the first aspect, in one possible implementation, the hot press groove and a plurality of second pressing portions are combined to form an extrusion unit, and the number of extrusion units is multiple.

[0011] Secondly, this utility model embodiment also provides a demolding fixture for the hot pressing mold of the aforementioned corrugated cutter head, comprising a base and multiple push shafts. Each push shaft corresponds one-to-one with one of the multiple guide holes. The push shafts are vertically arranged and fixed to the base, and the upper end of each push shaft is used to insert into the corresponding guide hole.

[0012] Compared with the prior art, the solution shown in this application embodiment, after hot pressing and sintering is completed, the mold is placed on this demolding fixture, so that each pusher shaft is inserted into its corresponding guide hole. In this way, the lower mold moves downward under its own gravity, thereby separating the lower mold from the guide shaft.

[0013] In conjunction with the second aspect, in one possible implementation, the push shaft includes a first segment and a second segment, the second segment being located below the first segment, and the diameter of the second segment being larger than the diameter of the guide hole.

[0014] In conjunction with the second aspect, in one possible implementation, the diameter of the first segment is smaller than the diameter of the guide hole.

[0015] In conjunction with the second aspect, in one possible implementation, the demolding fixture further includes two push rods. The two push rods are respectively inserted into the two notches so that they can push the lower mold downwards.

[0016] In conjunction with the second aspect, in one possible implementation, the demolding fixture further includes a drive shaft. The drive shaft is perpendicular to the push rods and its two ends are respectively fixedly connected to the two push rods. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A first cross-sectional view of the hot pressing mold for the corrugated cutter head provided in an embodiment of this utility model;

[0019] Figure 2 for Figure 1 A magnified structural diagram of part A in the diagram;

[0020] Figure 3 This is a second cross-sectional view of the hot pressing mold for the corrugated cutter head provided in an embodiment of the present invention.

[0021] Figure 4 for Figure 3 A magnified structural diagram of part B in the diagram;

[0022] Figure 5 A schematic diagram of the upper mold in the hot pressing mold of the corrugated cutter head provided in an embodiment of this utility model;

[0023] Figure 6 A schematic diagram of the structure of the lower mold of the hot pressing mold for the corrugated cutter head provided in this embodiment of the utility model, in which multiple corrugated cutter heads are placed;

[0024] Figure 7 This is a schematic diagram of the structure of a corrugated cutter head in the prior art;

[0025] Figure 8 This is a schematic diagram of the demolding tooling provided in the embodiment of the present utility model during use.

[0026] In the diagram: 1. Lower mold; 11. Hot pressing groove; 111. First pressing part; 12. Guide hole; 2. Upper mold; 21. Second pressing part; 22. Notch; 3. Corrugated cutter head; 4. Guide shaft; 5. Base; 6. Push shaft; 61. First section; 62. Second section; 7. Push rod; 8. Drive shaft. Detailed Implementation

[0027] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] Please refer to the following: Figures 3 to 7 The hot pressing mold for the corrugated cutter head provided by this utility model will now be described. The hot pressing mold for the corrugated cutter head includes a lower mold 1 and an upper mold 2. The upper surface of the lower mold 1 is provided with a hot pressing groove 11. The bottom surface of the hot pressing groove 11 has several upwardly protruding first pressing portions 111, which are arranged sequentially along a first horizontal direction. The first pressing portions 111 have an elongated structure and their length direction is set along a second horizontal direction, which is perpendicular to the first horizontal direction. The bottom surface of the upper mold 2 has several downwardly protruding second pressing portions 21, which are arranged sequentially along the first horizontal direction. The second pressing portions 21 have an elongated structure and their length direction is set along the second horizontal direction. The first pressing portions 111 and the second pressing portions 21 are respectively used to press into the grooves on the two sides of the cutter head blank.

[0029] Compared with the prior art, the hot pressing mold for corrugated cutter heads provided by this utility model places multiple cutter head blanks into the hot pressing groove 11 and arranges them sequentially along the length direction of the first pressing part 111. At this time, several first pressing parts 111 are pressed into several grooves on one side of the cutter head blank. Then, several second pressing parts 21 on the upper mold 2 are pressed into several grooves on the other side of the cutter head blank. Finally, the mold is placed on a hot pressing sintering machine for hot pressing sintering. Since multiple corrugated cutter heads 3 can be sintered at one time without stacking multiple pressing heads, the stacking process is avoided, which is cumbersome and poses a risk of tipping over when stacking multiple pressing heads to sinter multiple corrugated cutter heads 3 at one time.

[0030] In this embodiment, the number of first pressing portions 111 is equal to the number of grooves on one side of the cutter blank, and the number of second pressing portions 21 is equal to the number of grooves on the other side of the cutter blank. After the cutter blank is placed in the hot pressing groove 11, the upper surface of the cutter blank is higher than the upper surface of the lower mold 1, so that the lower mold 1 and the upper mold 2 can cooperate to press the cutter blank. Before hot pressing and sintering, a release agent is applied to the surface of the cutter blank.

[0031] In some embodiments, see Figure 1 and Figure 2 The lower mold 1 is provided with multiple guide holes 12 with vertically arranged axis lines. A guide shaft 4 is slidably inserted into each guide hole 12, and the guide shaft 4 is fixedly connected to the upper mold 2. By limiting the guide shaft 4 through the guide holes 12, the second pressing part 21 can be smoothly pressed into the groove to be pressed in.

[0032] In some embodiments, see Figure 2 The length of the guide shaft 4 is less than the length of the guide hole 12. After hot pressing and sintering, a suitable tool can be inserted into the guide hole 12 to push the guide shaft 4 out of the guide hole 12, and then the corrugated cutter head 3 in the hot pressing groove 11 can be taken out.

[0033] In some embodiments, see Figure 1 The upper mold 2 has two notches 22, through which the upper surface of the lower mold 1 is exposed. The lower mold 1 can be pushed downward through the notches 22, thereby separating the lower mold 1 from the guide shaft 4.

[0034] In some embodiments, see Figure 5 and Figure 6 The hot pressing groove 11 and several second pressing parts 21 are combined to form an extrusion unit, and there are multiple extrusion units. In this way, more corrugated cutter heads 3 can be formed by hot pressing in one operation.

[0035] Based on the same inventive concept, see [link to inventive concept] Figure 8 This application also provides a demolding fixture for the hot pressing mold of the aforementioned corrugated cutter head, including a base 5 and multiple push shafts 6. Each push shaft 6 corresponds to a single guide hole 12. The push shafts 6 are vertically arranged and fixed to the base 5, with their upper ends inserted into the corresponding guide holes 12. After hot pressing and sintering, the mold is placed on this demolding fixture, causing each push shaft 6 to pass through its corresponding guide hole 12. Thus, the lower mold 1 moves downwards under its own gravity, thereby separating the lower mold 1 from the guide shafts 4.

[0036] In some embodiments, the aforementioned push shaft 6 can be adopted as follows: Figure 8 The structure shown. See also Figure 8The push shaft 6 includes a first section 61 and a second section 62. The second section 62 is located below the first section 61, and the diameter of the second section 62 is larger than the diameter of the guide hole 12. The first section 61 is used to pass into the guide hole 12. After the lower mold 1 is disengaged from the guide shaft 4, it will fall onto the second section 62. The operator will put their hand between the base 5 and the lower mold 1, and then drag the lower mold 1 upward to disengage from the first section 61.

[0037] In some embodiments, the diameter of the first segment 61 is smaller than the diameter of the guide hole 12. This allows the lower mold 1 to more easily detach upward from the first segment 61.

[0038] In some embodiments, see Figure 8 The demolding fixture also includes two push rods 7. The two push rods 7 are respectively inserted into the two notches 22 so that they can push the lower mold 1 downwards. When the lower mold 1 cannot detach downwards from the guide shaft 4 due to its own gravity, such as because the lower mold 1 is tightly connected to the guide shaft 4, the two push rods 7 can be inserted into the two notches 22 respectively, and then push the lower mold 1 downwards, thereby causing the lower mold 1 to detach downwards from the guide shaft 4.

[0039] In some embodiments, see Figure 8 The demolding fixture also includes a drive shaft 8. The drive shaft 8 is perpendicular to the push rods 7 and its two ends are fixedly connected to the two push rods 7 respectively. It is convenient to control the two push rods 7 to push the lower mold 1 downward through the drive shaft 8.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hot pressing mold for corrugated cutter heads, characterized in that, include: The lower mold has a hot-pressing groove on its upper surface. The bottom surface of the hot-pressing groove has several upwardly protruding first pressing portions. These first pressing portions are arranged sequentially along a first horizontal direction. Each first pressing portion has a long strip-shaped structure, and its length direction is set along a second horizontal direction, which is perpendicular to the first horizontal direction. The upper mold has several downward protruding second pressing parts on its bottom surface. The several second pressing parts are arranged sequentially along the first horizontal direction. The second pressing parts have a long strip structure and their length direction is set along the second horizontal direction. The first pressing part and the second pressing part are respectively used to press into the grooves on the two sides of the cutter blank.

2. The hot pressing mold for the corrugated cutter head as described in claim 1, characterized in that, The lower mold is provided with multiple guide holes with vertically arranged axis lines, and a guide shaft is slidably inserted in each guide hole. The guide shaft is fixedly connected to the upper mold.

3. The hot pressing mold for the corrugated cutter head as described in claim 2, characterized in that, The length of the guide shaft is less than the length of the guide hole.

4. The hot pressing mold for the corrugated cutter head as described in claim 3, characterized in that, The upper mold has two openings, through which the upper surface of the lower mold is exposed.

5. The hot pressing mold for the corrugated cutter head as described in any one of claims 1-4, characterized in that, The hot press groove and several second pressing parts are combined to form an extrusion unit, and the number of extrusion units is multiple.

6. A demolding fixture, used in the hot pressing mold for the corrugated cutter head as described in claim 4, characterized in that, include: Base; Multiple push shafts correspond one-to-one with multiple guide holes. The push shafts are vertically arranged and fixed on the base. The upper end of the push shaft is used to insert into the corresponding guide hole.

7. The demolding fixture as described in claim 6, characterized in that, The push shaft includes a first section and a second section, the second section being located below the first section, and the diameter of the second section being larger than the diameter of the guide hole.

8. The demolding fixture as described in claim 7, characterized in that, The diameter of the first segment is smaller than the diameter of the guide hole.

9. The demolding fixture as described in claim 8, characterized in that, Also includes: Two push rods are respectively used to insert into the two notches so that the two push rods can push the lower mold downward.

10. The demolding fixture as described in claim 9, characterized in that, Also includes: The drive shaft is perpendicular to the push rod and its two ends are fixedly connected to the two push rods respectively.

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