Rotary cutting die

Abstract

The utility model discloses a rotary cutting die which comprises an upper die plate and a lower die plate, an upper pressing die is arranged on the upper die plate, a male die is arranged on the upper pressing die, a circle of die-cutting knives are arranged outside the male die, a sliding rail and a sliding block are arranged on the periphery of the lower die plate, an oblique angle is arranged at the contact position of the sliding rail and the sliding block, an ejector rod is arranged below the sliding block, and a fixing table is arranged above the sliding block. A lower pressing die is arranged on the fixing table, a female die matched with the male die is arranged in the lower pressing die, a rapid demolding assembly is arranged in the female die and comprises a positioning plate, an adjusting spring, a telescopic rod and a fixing plate, a sliding groove is formed below the female die, a partition plate is arranged in the sliding groove, and the fixing plate is fixed below the positioning plate. Telescopic rods are arranged on the periphery below the fixing plate, the lower portions of the telescopic rods penetrate through the partition plate, the telescopic rods are sleeved with adjusting springs, one end of each adjusting spring abuts against the bottom of the fixing plate, and the other end of each adjusting spring abuts against the partition plate. The structure realizes quick demolding.

Description

Technical Field

[0001] The utility model belongs to the relevant technical field of small household appliance shell mold processing, in particular to a rotary cutting mold. Background Art

[0002] The application of metal stamping parts in various industries is becoming more and more extensive, and the requirements for product quality and size are becoming more and more stringent, especially for metal stretching products. During the stretching process of hardware parts, due to the heterogeneity of materials, uneven thickness and inaccurate positioning, there are redundant flange edges on the top of the pulled workpiece, so a trimming process is required on the top. For example, for cylindrical, square or elliptical hardware shell parts, the industry used to use multi-step cutting for cylindrical or square tube cutting, that is, using engineering molds to cut each edge separately. Materials, using this process, require several sets of cutting dies to produce at the same time, the four cut surfaces need to be kept flush on the same plane, which is quite difficult, and the cutting burrs are inward, which also greatly affects the assembly accuracy with other parts. Therefore, there is a patent number of 201420699400.1, and the patent name is square positioning four-sided rotary cutting mold. This structure realizes the cutting operation on all sides of the product at the same time, but because the product is only sleeved outside the punch, it takes a lot of external force to detach it during the later demolding, which makes demolding difficult, so it needs to be improved. Utility Model Content

[0003] The utility model aims to provide a rotary cutting mould, which solves the problem of difficult demoulding of the existing rotary cutting mould.

[0004] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0005] The utility model is a rotary cutting die, comprising an upper die plate and a lower die plate. An upper die plate is provided on the upper die plate, a punch is provided on the upper die plate, a circle of die cutting knives is provided outside the punch, a slide rail and a slider are provided around the lower die plate, the slider not only moves up and down in the slide rail, but also moves in the horizontal direction, an oblique angle is provided at the contact between the slide rail and the slider, a push rod is provided below the slider, a nitrogen spring is provided below the lower die plate, the nitrogen spring is connected to the push rod, a fixed platform is provided above the slider, a lower die plate is provided on the fixed platform, A concave die cooperating with the convex die is arranged in the lower die, a quick demoulding assembly is arranged in the concave die, the quick demoulding assembly includes a positioning plate, an adjusting spring, a telescopic rod, and a fixed plate, a sliding groove is arranged below the concave die, a partition is arranged in the sliding groove, a fixed plate is fixed below the positioning plate, a telescopic rod is arranged around the bottom of the fixed plate, the partition passes through the bottom of the telescopic rod, and the adjusting spring with one end abutting against the bottom of the fixed plate and the other end abutting against the partition is connected to the outer shell of the telescopic rod, and the positioning plate is located in the concave die.

[0006] Preferably, in order to avoid position displacement during movement, a sliding groove is provided on both sides of the sliding groove, a sliding rod is provided on both sides of the bottom of the positioning plate, and a sliding block slidably connected to the sliding groove is provided on the outer side of the sliding rod.

[0007] Preferably, in order to facilitate the fixing of the product, an electromagnet is arranged in the positioning plate, a metal sheet flush with the upper surface of the positioning plate is fixed on the electromagnet, a pressure sensor is arranged on the punch, a controller electrically connected to the electromagnet and a wiring socket for supplying power to the controller are arranged on the side of the upper template, and the controller is electrically connected to the pressure sensor.

[0008] Preferably, the slide rails include a left slide rail, a right slide rail, a front slide rail and a rear slide rail, and the left slide rail, the right slide rail, the front slide rail and the rear slide rail are individually arranged on a slide seat by locking screws, and each slide seat is fixed to the lower template by positioning screws.

[0009] Preferably, to play a guiding role, a guide sleeve is arranged around the lower side of the upper template, and a guide rod matched with the guide sleeve is arranged around the upper side of the lower template.

[0010] Preferably, to play a guiding role, the upper die is fixed on an upper connecting plate, a guide rod 2 is arranged around the lower side of the upper connecting plate, and a guide sleeve 2 cooperating with the guide rod 2 is arranged around the upper side of the lower die plate.

[0011] The utility model has the following beneficial effects: the structure realizes the rapid demoulding operation of the metal product after the mold is opened later by arranging a rapid demoulding component that automatically retracts up and down in the concave mold, thereby improving the demoulding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic structural diagram of a rotary cutting mold in Example 1 when an upper mold plate and a lower mold plate are separated;

[0013] Figure 2 for Figure 1 Side view of

[0014] Figure 3 for Figure 1 A magnified image of point A;

[0015] Figure 4 This is a schematic diagram of the structure in which only the slide rail is installed on the lower template in Example 1;

[0016] Figure 5 This is a schematic diagram of the structure of the left slide rail, the right slide rail, the front slide rail, and the rear slide rail in Example 1;

[0017] Figure 6 This is a schematic diagram of the internal structure when the left slide rail is connected to the slide seat in Example 1;

[0018] Figure 7 This is a schematic structural diagram of a rotary cutting mold in Example 2 when an upper mold plate and a lower mold plate are separated;

[0019] Figure 8 for Figure 7 Enlarged view of point B.

[0020] Reference numerals:

[0021] Upper template 1, lower template 2, upper die 3, punch 4, die cutter 5, slide rail 6, left slide rail 601, right slide rail 602, front slide rail 603, rear slide rail 604, slider 7, push rod 8, nitrogen spring 9, fixed table 10, lower die 11, die 12, positioning plate 13, adjustment spring 14, telescopic rod 15, fixed plate 16, sliding groove 17, partition 18, sliding groove 19, slide rod 20, electromagnet 21, metal sheet 22, pressure sensor 23, controller 24, wiring socket 25, locking screw 26, slide seat 27, positioning screw 28, guide sleeve 1 29, guide rod 1 30, upper connecting plate 31, guide rod 2 32, guide sleeve 2 33, sliding block 34, metal product 35. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] See also Figure 1-7 As shown, a rotary cutting mold disclosed in this embodiment includes an upper template 1 and a lower template 2. The upper template 1 is provided with an upper die 3, the upper die 3 is provided with a punch 4, and a circle of die cutting knife 5 is arranged outside the punch 4. The lower template 2 is provided with a slide rail 6 and a slider 7 around it. The slider 7 not only moves up and down in the slide rail 6, but also moves horizontally. The contact between the slide rail 6 and the slider 7 is provided with an oblique angle. A push rod 8 is provided below the slider 7. A nitrogen spring 9 is provided below the lower template 2, and the nitrogen spring 9 is connected to the push rod 8. It is characterized in that: a fixed platform 10 is provided above the slider 7, and a lower die 11 is provided on the fixed platform 10. The lower die A die 12 cooperating with the punch 4 is arranged in 11, and a quick demoulding component is arranged in the die 12, and the quick demoulding component includes a positioning plate 13, an adjusting spring 14, a telescopic rod 15, and a fixed plate 16. A sliding groove 17 is arranged below the die 12, and a partition 18 is arranged in the sliding groove 17. A fixed plate 16 is fixed below the positioning plate 13, and a telescopic rod 15 is arranged around the bottom of the fixed plate 16. The partition 18 passes through the bottom of the telescopic rod 15, and the adjusting spring 14 with one end abutting against the bottom of the fixed plate 16 and the other end abutting against the partition 18 is connected to the outer shell of the telescopic rod 15, and the positioning plate 13 is located in the die 12.

[0025] Preferably, in order to avoid position displacement during movement, a sliding groove 19 is provided on both sides of the sliding groove 17, and a sliding rod 20 is provided on both sides of the bottom of the positioning plate 13. A sliding block 34 slidably connected to the sliding groove 19 is provided on the outer side of the sliding rod 20. When demolding is realized in this embodiment, the sliding block 34 moves along the sliding groove 19 to avoid the problem of position displacement during demolding and also plays a guiding role.

[0026] like Figure 5As shown, as a preference, the slide rail 6 includes a left slide rail 601, a right slide rail 602, a front slide rail 603 and a rear slide rail 604, and the left slide rail 601, the right slide rail 602, the front slide rail 603 and the rear slide rail 604 are all individually arranged on a slide seat 27 by a locking screw 26, and each slide seat 27 is fixed to the lower template 2 by a positioning screw 28. In this structure, the left slide rail 601, the right slide rail 602, the front slide rail 603 and the rear slide rail 604 are first fixed to the slide seat 27 by screws, and then the slide seat 27 is fixed to the lower template 2 by screws, which is convenient for later disassembly and replacement of different types of slide rails.

[0027] Preferably, to play a guiding role, a guide sleeve 29 is arranged around the bottom of the upper template 1, a guide rod 30 cooperating with the guide sleeve 29 is arranged around the top of the lower template 2, the upper die 3 is fixed on an upper connecting plate 31, a guide rod 32 is arranged around the bottom of the upper connecting plate 31, and a guide sleeve 33 cooperating with the guide rod 32 is arranged around the top of the lower template 2. The above-mentioned structure can play a guiding role when the upper template 1 and the lower template 2 are closed.

[0028] It should be noted that in this embodiment, due to the relative movement of the slider 7 and the slide rail 6, the die cutter 5 and the upper end surface side of the die also move relative to each other, and the movement trajectory of the die cutter 5 forms a closed circle, so it is called rotary cutting, which belongs to the conventional technology in this field, so it will not be described in detail.

[0029] In this embodiment, the specific working principle of the entire structure is as follows: the lower template 2 below is installed to the corresponding position, the upper template 1 above is installed to the corresponding position, and the upper template 1 is later driven by a cylinder to move up and down to achieve mold closing, and the metal product 35 is placed in the die 12, and then the upper template 1 moves down to ensure that the die 12 and the punch 4 are molded together, and after the mold is closed, the lower quick demolding component will be squeezed downward. At the same time, due to the relative movement of the slider 7 and the slide rail 6, the die cutting knife 5 and the upper end surface side of the die also move relative to each other. The movement trajectory of the die cutting knife 5 forms a closed circle, realizing the rotary cutting operation on the four sides of the upper surface of the metal product 35, and then the upper template 1 moves up, and under the action of the adjusting spring 14, the metal product 35 is ejected from the die 12, realizing the quick demolding operation of the metal product 35.

[0030] Example 2

[0031] See also Figure 7-8As shown, the general structure of a rotary cutting mold disclosed in this embodiment is the same as that of embodiment 1, except that, in order to facilitate the fixing of the product, an electromagnet 21 is arranged in the positioning plate 13, and a metal sheet 22 flush with the upper surface of the positioning plate 13 is fixed on the electromagnet 21, and a pressure sensor 23 is arranged on the punch 4. A controller 24 electrically connected to the electromagnet 21 and a wiring socket 25 for supplying power to the controller 24 are arranged on the side of the upper template 1. The controller 24 is electrically connected to the pressure sensor 23. In this embodiment, the wiring socket 25 is later connected to an external power supply device. How the controller 24 is connected to the electric power supply device is not determined. The connection between the magnet 21, the pressure sensor 23, and the wiring socket 25 belongs to the conventional technology in this field, and the specific models of the pressure sensor 23 and the controller 24 also belong to the conventional technology in this field, so they are not described in detail. The specific working principle of this structure is as follows. When the product is placed in the die 12, the upper template 1 moves down, and after the mold is closed, the pressure sensor 23 obtains the signal. At this time, the controller 24 controls the electromagnet 21 to be energized and attracted. The magnetism ensures that the metal sheet 22 has the magnetism to attract the metal product, thereby effectively fixing the metal product and avoiding displacement. Later, when the upper template 1 moves up, the electromagnet 21 loses power, which is convenient for later demolding.

[0032] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A rotary cutting die, comprising an upper die plate (1) and a lower die plate (2), wherein the upper die plate (1) is provided with an upper die plate (3), the upper die plate (3) is provided with a punch (4), the punch (4) is provided with a circle of die cutting knives (5), the lower die plate (2) is provided with a slide rail (6) and a slider (7) on all sides, the slider (7) not only moves up and down in the slide rail (6), but also moves horizontally, the contact point between the slide rail (6) and the slider (7) is provided with an oblique angle, a push rod (8) is provided below the slider (7), a nitrogen spring (9) is provided below the lower die plate (2), the nitrogen spring (9) is connected to the push rod (8), and the characteristics are: A fixed platform (10) is provided above the slider (7), a lower die (11) is provided on the fixed platform (10), a concave die (12) cooperating with the convex die (4) is provided in the lower die (11), a quick demoulding assembly is provided in the concave die (12), and the quick demoulding assembly comprises a positioning plate (13), an adjusting spring (14), a telescopic rod (15), and a fixed plate (16), a sliding groove (17) is provided below the concave die (12), and a sliding groove (17) is provided in the sliding groove (1 7) is provided with a partition (18), a fixing plate (16) is fixed below the positioning plate (13), a telescopic rod (15) is provided around the bottom of the fixing plate (16), the bottom of the telescopic rod (15) passes through the partition (18), an adjusting spring (14) is connected to the outer shell of the telescopic rod (15), one end of which is against the bottom of the fixing plate (16) and the other end of which is against the partition (18), and the positioning plate (13) is located in the concave mold (12).

2. A rotary cutting die according to claim 1, characterized in that: A sliding groove (19) is provided on both sides of the sliding groove (17), a sliding rod (20) is provided on both sides of the bottom of the positioning plate (13), and a sliding block (34) slidably connected to the sliding groove (19) is provided on the outer side of the sliding rod (20).

3. A rotary cutting die according to claim 2, characterized in that: An electromagnet (21) is arranged inside the positioning plate (13), a metal sheet (22) flush with the upper surface of the positioning plate (13) is fixed on the electromagnet (21), a pressure sensor (23) is arranged on the punch (4), a controller (24) electrically connected to the electromagnet (21) and a wiring socket (25) for supplying power to the controller (24) are arranged on the side of the upper mold plate (1), and the controller (24) is electrically connected to the pressure sensor (23).

4. A rotary cutting die according to claim 2, characterized in that: The slide rail (6) includes a left slide rail (601), a right slide rail (602), a front slide rail (603) and a rear slide rail (604). The left slide rail (601), the right slide rail (602), the front slide rail (603) and the rear slide rail (604) are all individually arranged on a slide seat (27) through a locking screw (26), and each slide seat (27) is fixed to the lower template (2) through a positioning screw (28).

5. A rotary cutting die according to claim 4, characterized in that: A guide sleeve (29) is arranged around the lower side of the upper template (1), and a guide rod (30) cooperating with the guide sleeve (29) is arranged around the upper side of the lower template (2).

6. The rotary cutting die according to claim 5, characterized in that: The upper pressing die (3) is fixed on an upper connecting plate (31), and a second guide rod (32) is arranged around the lower side of the upper connecting plate (31), and a second guide sleeve (33) matched with the second guide rod (32) is arranged around the upper side of the lower mold plate (2).

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