Replaceable cold pressing die

Abstract

A cold pressing mold with a replaceable core comprises a cold pressing female mold sleeve, a cold pressing female mold core replacement, a cold pressing upper pressure head, a cold pressing lower pressure head and a cold pressing core rod; the cold pressing upper pressure head penetrates into the upper opening, is inserted into the cavity and is pressed on the upper end of the bead body ring, the core rod passes through the through hole and the lower end is pressed on the upper end of the bead base ring; the cold pressing lower pressure head penetrates into the lower opening, is inserted into the cavity and is pressed on the lower ends of the bead body ring and the bead base ring; the cold pressing upper pressure head, the cold pressing lower pressure head and the cold pressing core rod form a cavity for forming beads in the cavity of the cold pressing female mold core replacement; the cold pressing mold of the present invention has a split cold pressing female mold sleeve and a cold pressing female mold core replacement. When the cold pressing female mold core replacement is worn, only the cold pressing female mold core replacement needs to be replaced without replacing the cold pressing female mold sleeve, thereby saving the cost of replacing the mold; and the cold pressing female mold core replacement and the cold pressing female mold sleeve with the same outer diameter and different inner diameters can be used to produce beads of different styles, thereby saving the production cost of producing beads of different styles.

Description

Technical Field

[0001] The invention relates to a mould, in particular to a cold pressing mould with a replaceable core. Background Art

[0002] The existing beads have a bead base ring 20 and a bead body ring 10 located outside the bead base ring 20. The upper and lower ends of the bead base ring 20 generally protrude from the upper and lower ends of the bead body ring 10 respectively. In the cold pressing mold accessories for bead production, the cold pressing female mold is processed as a whole, which consumes a lot of mold steel materials and has a high processing cost. Please refer to Figure 1 The existing cold pressing mold comprises a cold pressing mold sleeve 1', a cold pressing upper ram 2', a cold pressing lower ram 3', and a cold pressing core rod 4'; the cold pressing mold sleeve 1' is provided with a chamber 11' which passes through from top to bottom, the cold pressing upper ram 2' and the cold pressing lower ram 3' respectively penetrate from the top and bottom of the chamber 11', the cold pressing upper ram 2' is provided with a through hole 21' for the cold pressing core rod 4' to penetrate, the cold pressing core rod 4' passes through the cold pressing upper ram 2' and forms a cavity for forming beads in the chamber 11' with the cold pressing upper ram 2' and the cold pressing lower ram 3'; when forming beads, the diamond particles in the bead matrix ring 10 on the outside of the beads are relatively The sharp edge will wear the inner wall of the cavity 11' of the cold pressing die sleeve 1' during the cold pressing process of forming beads, causing damage to the cold pressing die sleeve 1', resulting in uneven specifications of the beads produced (outer diameter of the cold pressed blanks), and if the cold pressing die sleeve 1' is severely worn, the entire die must be replaced, and the cold pressing die sleeve 1' is (as a whole) made of steel, which is costly; moreover, the shape of the traditional cold pressing die cavity is fixed. If beads of different types and sizes need to be manufactured, different cold pressing dies need to be used. However, many OEM factories have a relatively fast cycle for updating molds, which greatly increases production costs and wastes the original cold pressing molds.

[0003] In view of this, the inventor has made in-depth research and actively studied and improved the cold pressing die structure design to develop and design the present invention in order to solve the many deficiencies and inconveniences caused by the imperfect cold pressing die structure design. Summary of the invention

[0004] The object of the present invention is to provide a cold pressing mold with a replaceable core, wherein the cold pressing mold sleeve is composed of a cold pressing female mold sleeve and a cold pressing female mold core that can be separated and detached. When the cold pressing female mold core is worn, only the cold pressing female mold core needs to be replaced without replacing the cold pressing female mold sleeve, thereby saving the cost of replacing the mold; moreover, the cold pressing female mold core and the cold pressing female mold sleeve with the same outer diameter and different inner diameters can be used to produce beads of different styles, thereby saving the production cost of producing beads of different styles.

[0005] In order to achieve the above object, the solution of the present invention is:

[0006] A cold pressing mold with a replaceable core, which includes a cold pressing female mold sleeve, a cold pressing female mold core replacement, a cold pressing upper pressure head, a cold pressing lower pressure head and a cold pressing core rod; the cold pressing female mold sleeve is provided with a cavity for accommodating the cold pressing female mold core replacement, an upper opening and a lower opening connected to the cavity; the cold pressing female mold core replacement is provided with a cavity connected to the upper opening and the lower opening; the cold pressing upper pressure head is provided with a through hole for the cold pressing core rod to pass through, the cold pressing upper pressure head is inserted into the upper opening, inserted into the cavity and pressed on the upper end of the bead body ring, the cold pressing core rod passes through the through hole and the lower end is pressed on the upper end of the bead base ring; the cold pressing lower pressure head is inserted into the lower opening, inserted into the cavity and pressed on the lower ends of the bead body ring and the bead base ring; the cold pressing upper pressure head, the cold pressing lower pressure head and the cold pressing core rod form a cavity for forming beads in the cavity of the cold pressing female mold core replacement.

[0007] The cold-pressed female mold sleeve includes an upper female mold sleeve and a lower female mold sleeve. The upper female mold sleeve is provided with a first inner cavity which is sleeved on the upper section outside the cold-pressed female mold replacement core. The lower female mold sleeve is provided with a second inner cavity which is sleeved on the lower section outside the cold-pressed female mold replacement core. The first inner cavity and the second inner cavity form a containing cavity.

[0008] The cold-pressed female mold core replacement is in the shape of a hollow cylinder, and the central hole of the hollow cylinder is the cavity.

[0009] The inner diameters of the upper opening, the lower opening and the chamber are consistent.

[0010] The first inner cavity is communicated with the upper opening and has an inner diameter greater than that of the upper opening; the second inner cavity is communicated with the lower opening and has an inner diameter greater than that of the lower opening.

[0011] The sum of the depth of the first inner cavity and the depth of the second inner cavity is less than or equal to the height of the cold-pressed female mold core replacement.

[0012] The lower end of the upper female mold sleeve is provided with a first outer convex ring, and the upper end of the lower female mold sleeve is provided with a second outer convex ring; the cold pressing mold also has a female mold fixing plate and a female mold clamping block, the female mold fixing plate is against the upper end surface of the first outer convex ring of the upper female mold sleeve, the female mold clamping block is pressed on the lower end surface of the second outer convex ring of the lower female mold sleeve, and the female mold fixing plate and the female mold clamping block are locked together by bolts, thereby locking the upper female mold sleeve and the lower female mold sleeve.

[0013] The upper opening is in the form of a bell mouth that gradually expands upward from the connection with the first inner cavity; the lower opening is provided with a bell mouth that gradually expands outward at the outer end.

[0014] The lower end of the cold-pressed core rod is provided with a first positioning column which can extend into the inner hole of the beaded base ring.

[0015] The upper end of the cold pressing head is provided with a second positioning column which can be inserted into the inner hole of the beaded base ring.

[0016] After adopting the above structure, the cold-pressed female mold sleeve and the cold-pressed female mold replacement core of the cold-pressed mold of the present invention are split and can be assembled or disassembled. When the cold-pressed female mold replacement core is seriously worn during the bead production process, it is only necessary to disassemble and replace the cold-pressed female mold replacement core without replacing the cold-pressed female mold sleeve, which can reduce the amount of mold steel material used and save the cost of replacing the mold; moreover, the cold-pressed female mold replacement cores with the same outer diameter and different inner diameters can be used in conjunction with the cold-pressed female mold sleeve to produce beads of different styles (that is, the outer diameters of the cold-pressed female mold replacement cores are all processed into a uniform size, and are matched and fixed with the cold-pressed female mold sleeve, and the cold-pressed female mold replacement cores are all processed into a uniform size, and are matched and fixed with the cold-pressed female mold sleeve, and the cold-pressed female mold replacement cores are all matched and fixed with the cold-pressed female mold sleeve, and the cold-pressed female mold replacement cores are all matched and replaced ... The inner diameter of the core is processed into the corresponding specification size of different beads), which can save the production cost of producing different styles of beads; the cold pressing mold of the present invention is in the bead production process: first, the cold pressing female mold replacement core is assembled in the cold pressing female mold sleeve, and then the cold pressing lower pressure head is inserted into the cavity, and the bead base ring and the bead body ring are placed in the cavity, and the cold pressing upper pressure head is inserted into the cavity, and then the cold pressing core rod is inserted into the cold pressing upper pressure head, and finally the cold pressing upper pressure head, the cold pressing core rod and the cold pressing lower pressure head press the bead body ring and the bead base ring up and down to press and form the beads, and the production process is simple and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional schematic diagram of an existing cold pressing die;

[0018] Figure 2 It is a cross-sectional schematic diagram of the cold pressing mold of the present invention;

[0019] Figure 3 It is a cross-sectional schematic diagram of the cold pressing mold female mold sleeve and the replacement core assembly of the present invention;

[0020] Figure 4 It is a cross-sectional schematic diagram of the cold pressing die of the present invention, the matching female die fixing plate and the female die pressing block.

[0021] Explanation of symbols

[0022] Cold pressed female mold sleeve 1 Cold pressed female mold replacement 2

[0023] Cold press upper pressure head 3 Cold press lower pressure head 4

[0024] Cold pressed core rod 5 cavity 11

[0025] Upper opening 12 Lower opening 13

[0026] Chamber 21 Through hole 31

[0027] Upper female mold sleeve 14 Lower female mold sleeve 15

[0028] First inner cavity 141 Second inner cavity 151

[0029] First outer convex ring 142 Second outer convex ring 152

[0030] Female mold fixing plate 6 Female mold pressing block 7

[0031] Bolt 8 First positioning column 51

[0032] The second positioning column 41 . DETAILED DESCRIPTION

[0033] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0034] See also Figures 2 to 4 The present invention discloses a cold pressing mold with a replaceable core, which includes a cold pressing female mold sleeve 1, a cold pressing female mold core replacement 2, a cold pressing upper pressure head 3, a cold pressing lower pressure head 4 and a cold pressing core rod 5; the cold pressing female mold sleeve 1 is provided with a cavity 11 for accommodating the cold pressing female mold core replacement 2, an upper opening 12 and a lower opening 13 connected to the cavity 11; the cold pressing female mold core replacement 2 is provided with a chamber 21 connected to the upper opening 12 and the lower opening 13; the cold pressing upper pressure head 3 is provided with a through hole 3 for the cold pressing core rod 5 to pass through 1, the cold pressing upper ram 3 is inserted into the upper opening 12 and inserted into the cavity 21 and pressed on the upper end of the beaded matrix ring 10, the cold pressing core rod 5 passes through the through hole 31 and the lower end is pressed on the upper end of the beaded base ring 20; the cold pressing lower ram 4 is inserted into the lower opening 13 and inserted into the cavity 21 and pressed on the lower ends of the beaded matrix ring 10 and the beaded base ring 20; the cold pressing upper ram 3, the cold pressing lower ram 4 and the cold pressing core rod 5 surround a molding cavity for forming beads in the cavity 21 of the cold pressing female mold substitute 2.

[0035] The cold-pressed female mold sleeve 1 and the cold-pressed female mold replacement core 2 of the cold-pressed mold of the present invention are of a split structure that can be assembled or disassembled. When the cold-pressed female mold replacement core 2 is severely worn during the bead production process, it is only necessary to disassemble and replace the cold-pressed female mold replacement core 2 without replacing the cold-pressed female mold sleeve 1, which can reduce the amount of mold steel material used and save the cost of replacing the mold; moreover, the cold-pressed female mold replacement core 2 with the same outer diameter and different inner diameters can be used in conjunction with the cold-pressed female mold sleeve 1 to produce beads of different styles (that is, the outer diameters of the cold-pressed female mold replacement core 2 are all processed into a uniform size, which is matched and fixed with the cold-pressed female mold sleeve 1, and the inner diameters of the cold-pressed female mold replacement core 2 are processed into different strings Beads corresponding to the specification size), can save the production cost of producing different styles of beads; the cold pressing mold of the present invention is in the beading production process: first, the cold pressing female mold replacement 2 is assembled in the cold pressing female mold sleeve 1, and then the cold pressing lower pressure head 4 is inserted into the cavity 21, and the beading base ring 20 and the beading body ring 10 are placed in the cavity 21, and the cold pressing upper pressure head 3 is inserted into the cavity 21, and then the cold pressing core rod 5 is inserted into the cold pressing upper pressure head 3, and finally the cold pressing upper pressure head 3, the cold pressing core rod 5 and the cold pressing lower pressure head 4 press the beading body ring 20 and the beading base ring 10 up and down to press and form the beads, the production process is simple, and the cost is low.

[0036] The cold-pressed female mold sleeve 1 of the present invention includes an upper female mold sleeve 14 and a lower female mold sleeve 15. The upper female mold sleeve 14 is provided with a first inner cavity 141 which is sleeved on the upper section outside the cold-pressed female mold replacement core 2. The lower female mold sleeve 15 is provided with a second inner cavity 151 which is sleeved on the lower section outside the cold-pressed female mold replacement core 2. The first inner cavity 141 and the second inner cavity 151 form a containing cavity 11. The cold-pressed female mold sleeve 1 is divided into an upper female mold sleeve 14 and a lower female mold sleeve 15. The cold-pressed female mold replacement core 2 can be sleeved in the upper female mold sleeve 14 and the lower female mold sleeve 15, which is convenient for assembling and disassembling the cold-pressed female mold replacement core 2. The structure is simple, the assembly and disassembly are convenient, and the replacement of the cold-pressed female mold replacement core 2 is more convenient.

[0037] The cold-pressed female mold core replacement 2 of the present invention is in the shape of a hollow cylinder, and the central hole of the hollow cylinder is the chamber 21; the cold-pressed female mold core replacement 2 has a simple structure and is convenient for production.

[0038] The inner diameters of the upper opening 12, the lower opening 13 and the chamber 21 of the present invention are consistent; the upper opening 12, the lower opening 13 and the chamber 21 are connected by through holes of the same diameter, and the cold-pressed upper ram 3, the cold-pressed core rod 5 and the cold-pressed lower ram 4 are conveniently inserted into the chamber 21 and their relative positions are stable, making the operation more convenient and smoother during the bead-pressing forming process.

[0039] The first inner cavity 141 of the present invention is connected with the upper opening 12 and the inner diameter of the first inner cavity 141 is larger than the inner diameter of the upper opening 12; the second inner cavity 151 is connected with the lower opening 13 and the inner diameter of the second inner cavity 151 is larger than the inner diameter of the lower opening 13; a retaining edge is formed between the first inner cavity 141 and the upper opening 12 to prevent the cold-pressed female mold replacement core 2 from escaping from the upper female mold sleeve 14 through the upper opening 12, and a retaining edge is formed between the second inner cavity 151 and the lower opening 13 to prevent the cold-pressed female mold replacement core 2 from escaping from the lower female mold sleeve 15 through the lower opening 13; when the upper female mold sleeve 14 and the lower female mold sleeve 15 are locked, the cold-pressed female mold replacement core 2 is sleeved in the upper female mold sleeve 14 and the lower female mold sleeve 15 and will not slip out, so the cold-pressed female mold replacement core 2 can be better fixed.

[0040] The sum of the depth of the first inner cavity 141 and the depth of the second inner cavity 151 of the present invention is less than or equal to the height of the cold-pressed female mold core replacement 2; when the upper female mold sleeve 14 and the lower female mold sleeve 15 are respectively mounted on the upper and lower sections of the cold-pressed female mold core replacement 2 and fixedly locked together, the upper and lower ends of the cold-pressed female mold core replacement 2 can be firmly and stably pressed and fixed, avoiding the height of the cold-pressed female mold core replacement 2 being less than the height of the cavity 11 and shaking in the cavity 11, and the setting being loose, which affects the bead pressing and molding.

[0041] The lower end of the upper female mold sleeve 14 of the present invention is provided with a first outer convex ring 142, and the upper end of the lower female mold sleeve 15 is provided with a second outer convex ring 152; the cold pressing mold also has a female mold fixing plate 6 and a female mold clamping block 7, the female mold fixing plate 6 is against the upper end surface of the first outer convex ring 142 of the upper female mold sleeve 14, the female mold clamping block 7 is pressed on the lower end surface of the second outer convex ring 152 of the lower female mold sleeve 15, and the female mold fixing plate 6 and the female mold clamping block 7 are locked together by bolts 8, thereby locking the upper female mold sleeve 14 and the lower female mold sleeve 15; the cold pressing female mold replacement core 2 can be firmly fixed in the cold pressing female mold sleeve 1, and the operation is more convenient and smoother during the bead pressing molding process.

[0042] The upper opening 12 of the present invention is in the form of a bell-shaped mouth that gradually expands upward from the connection with the first inner cavity 141, and the bell-shaped mouth can facilitate the cold pressing upper ram 3 to be inserted into the cavity 21 of the cold pressing female mold replacement core 2; the lower opening 13 is provided with a bell-shaped mouth that gradually expands outward at the outer end, and the bell-shaped mouth can facilitate the cold pressing lower ram 4 to be inserted into the cavity 21 of the cold pressing female mold replacement core 2, and the beading forming operation is more convenient.

[0043] The lower end of the cold-pressed core rod 5 of the present invention is provided with a first positioning column 51 which can be extended into the inner hole of the bead base ring 20; in the process of pressing beads, the first positioning column 51 can make the relative position of the cold-pressed core rod 5 and the beads more stable, and the cold-pressed core rod 5 can be smoothly pressed on the bead base ring 20, which is convenient for the cold-pressed upper press head 3 to press the bead body ring 10, and the pressing effect is good; and the bottom end of the first positioning column 51 is provided with a tapered end, which is convenient for insertion into the cold-pressed upper press head 3; and the upper end of the cold-pressed core rod 5 is a bullet head end with a tapered end.

[0044] The upper end of the cold press press head 4 of the present invention is provided with a second positioning column 41 which can be extended into the inner hole of the bead base ring 20; during the bead pressing process, the second positioning column 41 can make the relative position of the cold press press head 4 and the beads more stable, and the cold press press head 4 can be smoothly pressed on the lower end of the bead base ring 20, and the pressing effect is better.

[0045] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made thereto by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A cold pressing die with replaceable core, characterized in that: It includes a cold-pressed female mold sleeve, a cold-pressed female mold replacement core, a cold-pressed upper pressure head, a cold-pressed lower pressure head and a cold-pressed core rod; the cold-pressed female mold sleeve is provided with a cavity for accommodating the cold-pressed female mold replacement core, and an upper opening and a lower opening connected to the cavity; the cold-pressed female mold replacement core is provided with a chamber connected to the upper opening and the lower opening; the cold-pressed upper pressure head is provided with a through hole for the cold-pressed core rod to pass through, the cold-pressed upper pressure head is inserted into the upper opening and inserted into the cavity and pressed on the upper end of the beaded matrix ring, the cold-pressed core rod passes through the through hole and the lower end is pressed on the upper end of the beaded base ring; the cold-pressed lower pressure head is inserted into the lower opening and inserted into the cavity and pressed on the beaded The lower end of the carcass ring and the bead base ring; the cold-pressed upper pressure head, the cold-pressed lower pressure head and the cold-pressed core rod enclose a cavity for forming beads in the cavity of the cold-pressed female mold core replacement; the cold-pressed female mold sleeve includes an upper female mold sleeve and a lower female mold sleeve, the upper female mold sleeve is provided with a first inner cavity of the upper section which is sleeved outside the cold-pressed female mold core replacement, the lower female mold sleeve is provided with a second inner cavity of the lower section which is sleeved outside the cold-pressed female mold core replacement, the first inner cavity and the second inner cavity enclose a containing cavity; the inner diameters of the upper opening, the lower opening and the cavity are consistent; the sum of the depth of the first inner cavity and the depth of the second inner cavity is less than or equal to the height of the cold-pressed female mold core replacement.

2. The cold pressing mold with replaceable core as claimed in claim 1, characterized in that: The cold-pressed female mold core replacement is in the shape of a hollow cylinder, and the central hole of the hollow cylinder is the chamber.

3. The cold pressing mold with replaceable core as claimed in claim 1, characterized in that: The first inner cavity is communicated with the upper opening, and the inner diameter of the first inner cavity is greater than the inner diameter of the upper opening; the second inner cavity is communicated with the lower opening, and the inner diameter of the second inner cavity is greater than the inner diameter of the lower opening.

4. The cold pressing mold with replaceable core as claimed in claim 1, characterized in that: The lower end of the upper female mold sleeve is provided with a first outer convex ring, and the upper end of the lower female mold sleeve is provided with a second outer convex ring; the cold pressing mold also has a female mold fixing plate and a female mold clamping block, the female mold fixing plate is against the upper end surface of the first outer convex ring of the upper female mold sleeve, the female mold clamping block is pressed on the lower end surface of the second outer convex ring of the lower female mold sleeve, and the female mold fixing plate and the female mold clamping block are locked together by bolts, thereby locking the upper female mold sleeve and the lower female mold sleeve.

5. The cold pressing mold with replaceable core as claimed in claim 1, characterized in that: The upper opening is in the form of a bell mouth that gradually expands upward from the connection with the first inner cavity; the lower opening is provided with a bell mouth that gradually expands outward at the outer end.

6. The cold pressing mold with replaceable core as claimed in claim 1, characterized in that: The lower end of the cold-pressed core rod is provided with a first positioning column which can extend into the inner hole of the beaded base ring.

7. The cold pressing mold with replaceable core as claimed in claim 1, characterized in that: The upper end of the cold pressing head is provided with a second positioning column which can be inserted into the inner hole of the beaded base ring.

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