Integral sizing die for nut

Abstract

The utility model relates to the technical field of powder metallurgy part shaping, and discloses an integral nut shaping die which comprises a base. The device further comprises a sliding block, a shroud ring and a supporting plate. A supporting plate containing groove is formed in the upper end face of the base. The supporting plate is elastically connected with the supporting plate placing groove; the shroud ring is detachably and fixedly arranged on the base, and a sliding block containing groove is formed in the center of the shroud ring. The number of the sliding blocks is three, and the three sliding blocks are arranged in the sliding block containing groove in a surrounding mode at equal angles and equal intervals and located above the supporting plate. The nut shaping device is simple in structure, convenient to operate, capable of shaping a plurality of nuts in unit time, high in shaping efficiency and short in shaping time period; the nut shaping device can simultaneously shape nuts in multiple directions, and the nuts are stressed uniformly and deformed consistently in the shaping process; in the shaping process, positioning is carried out through movement of the sliding block, the positioning reference is stable, and the shaping qualification rate is high.

Description

TECHNICAL FIELD

[0001] The utility model belongs to powder metallurgy part shaping technical field, especially nut integral shaping mould is related to. BACKGROUND

[0002] The nut is a kind of part produced by powder metallurgy technology, it is hexagonal nut, and through hole is arranged in the center;The adjacent surface between the outside of nut is chamfered.The appearance of the part will change after sintering, and the size of nut standard part that does not meet the production requirement, therefore, it needs to be shaped.

[0003] The old shaping tooling of prior art has the following defects:

[0004] 1, the old shaping tooling is single direction multiple shaping, and the six end faces of the hexagonal nut are shaped completely by manually adjusting and rotating the part multiple times, so the efficiency is low;

[0005] 2, single direction multiple shaping not only leads to multiple processes of shaping, but also the shaping of the subsequent process can affect the previous shaping, causing the previous shaping to deform again, and each shaping can only be for a nut, the operation difficulty is high, and the frequency of defective products is high;

[0006] 3, when shaping the nut, manually put the product and position the reference, and the manual positioning reference is unstable, and it is also easy to produce defective products.

[0007] Therefore, the nut integral shaping mould is needed to solve the above technical problems. UTILITY MODEL CONTENTS

[0008] The utility model aims at overcoming the prior art problems, and provides nut integral shaping mould.

[0009] To achieve the above object, the utility model is implemented according to the following technical scheme:

[0010] Nut integral shaping mould is used for the shaping of nut;The nut is hexagonal nut, and through hole is arranged in the center;The adjacent surface between the outside of nut is chamfered;The integral shaping mould includes base;It also includes sliding block, hoop, supporting plate;

[0011] The upper end surface of base is provided with supporting plate placing groove;The supporting plate is elastically connected with supporting plate placing groove;

[0012] The hoop is detachably fixed on the base, and the hoop is provided with sliding block placing groove in the center;

[0013] The slider is provided with three, the three sliders are equiangularly and equidistantly arranged in the slider placing groove and located above the supporting plate; the end of the slider close to the center of the supporting plate is provided with a V-shaped shaping groove; the end of the slider away from the center of the supporting plate is provided with a first guide slope, the first guide slope is inclined downward and points to the center of the base; the inner side wall of the slider placing groove opposite to the first guide slope is provided with a wear-resistant sheet, the end surface of the wear-resistant sheet is provided with a second guide slope; the first guide slope and the second guide slope are in contact and have consistent inclination angles;

[0014] When the slider moves downward, the three sliders move to the center of the supporting plate along the corresponding second guide slopes; when the slider moves to the lowermost position, the V-shaped shaping grooves of the three sliders surround a hexagon matching the nut.

[0015] The hexagon surrounded by the V-shaped shaping grooves of the three sliders matches the size of the nut standard part. The depth of the hexagon surrounded by the V-shaped shaping grooves of the three sliders can stack multiple nuts.

[0016] The shape of the slider placing groove matches the three sliders arranged around it, which limits the movement of the slider along the second guide slope.

[0017] Preferably, the supporting plate and the supporting plate placing groove are elastically connected by a return spring.

[0018] The connection of the return spring adopts the existing technology, and the person skilled in the art can select the model and installation method according to the actual use requirement.

[0019] Specifically, a plurality of first spring mounting grooves are equiangularly and equidistantly arranged around in the supporting plate placing groove, a plurality of second spring mounting grooves are equiangularly and equidistantly arranged around at the lower end surface of the supporting plate, the first spring mounting grooves and the second spring mounting grooves correspond to each other, and the two ends of the return spring are respectively mounted in the corresponding first spring mounting groove and second spring mounting groove.

[0020] Preferably, the center of the supporting plate placing groove is provided with a cylindrical protrusion, and the bottom of the supporting plate is provided with a cylindrical recess matching the cylindrical protrusion; the cylindrical protrusion and the cylindrical recess are connected by a screw.

[0021] The cylindrical protrusion is a hollow protrusion, the upper end of the screw is fixedly connected with the top of the cylindrical recess, the lower end of the screw is located in the cylindrical protrusion, and the lower end of the screw can move up and down along the cylindrical protrusion. The arrangement of this structure plays a guiding role in the upward and downward movement of the supporting plate, making the movement more stable.

[0022] Preferably, three guide columns are equiangularly and equidistantly arranged around outside the supporting plate placing groove; the three guide columns are all inclined downward and point to the center of the supporting plate placing groove.

[0023] The slider is provided with a guide hole matched with the guide column, the guide column is inserted into the corresponding guide hole, and the slider can move up and down along the guide column.

[0024] The inclination angle of the guide column is the same as the inclination angle of the first guide inclined surface of the corresponding slider.

[0025] The guide column combines with the wear-resistant sheet to make the movement of the slider more stable.

[0026] The utility model discloses a radial clamping device is realized by the mechanical characteristics of the inclined plane (first guide inclined surface, second guide inclined surface) and the action (the movement of the slider along the radial direction inwards or outwards) of tool opening and closing.

[0027] The three sliders move along the first guide inclined surface and the second guide inclined surface to reshape the nut from three directions.

[0028] The utility model discloses a hoop, mainly position the slider, make the slider movement position controllable, and play the role of internal cavity.

[0029] The utility model discloses a supporting plate plays the role of the nut reshaping reset, and the whole reshaping mould opens and closes reset, cooperates three sliders to move simultaneously to guarantee that the nut reshaping stress is even.

[0030] The utility model discloses a guide, plays the role of positioning three sliders, and guides the movement of three sliders.

[0031] The utility model discloses a reset spring, can push the supporting plate that presses down upwards, in the process of pushing upwards, three sliders open, can easily take out the nut that is reshaped.

[0032] The utility model discloses a wear-resistant sheet: adopt higher hardness material to make, make the service life of the first guide inclined surface of three sliders increase.

[0033] The utility model discloses a base is the bottom of the whole reshaping mould, supports the whole reshaping mould.

[0034] The utility model discloses a V-shaped reshaping groove, and the specific size design is designed according to the size standard of the nut to be reshaped, and after the reshaping of three sliders of the whole reshaping mould, the nut of size qualification can be obtained.

[0035] The components not added in the utility model are all adopted conventional means in the field, and the person skilled in the art can select the model, installation mode according to the actual use demand, and the specific installation and control are clearly understood, and will not be described in detail here.

[0036] The utility model discloses reached the following beneficial effects:

[0037] The utility model discloses simple structure, convenient operation can be shaped to multiple nuts in unit time, and the shaping efficiency is high, and the shaping time period, the utility model discloses can be shaped to nut in multiple directions simultaneously, and the stress of nut is uniform deformation in the shaping process, the utility model discloses positioning through the movement of sliding block in the shaping process, and positioning reference is stable, and the shaping qualified rate is high. BRIEF DESCRIPTION OF DRAWINGS

[0038] Figure 1 It is the three-dimensional structure schematic diagram of embodiment 1 of the utility model;

[0039] Figure 2 It is the translucent three-dimensional structure schematic diagram of open state of embodiment 1 of the utility model;

[0040] Figure 3 It is the translucent three-dimensional structure schematic diagram of closed state of embodiment 1 of the utility model;

[0041] Figure 4 It is Figure 3 The three-dimensional structure schematic diagram of overhead perspective view;

[0042] Figure 5 It is Figure 4 The three-dimensional structure schematic diagram of removing sliding block, nut;

[0043] Figure 6 It is Figure 5 The three-dimensional structure schematic diagram of removing supporting plate;

[0044] Figure 7 It is Figure 6 The three-dimensional structure schematic diagram of removing hoop ring;

[0045] Figure 8 It is the assembly drawing of hoop ring, sliding block, supporting plate, reset spring of embodiment 1 of the utility model;

[0046] Figure 9 It is the three-dimensional structure schematic diagram of sliding block of embodiment 1 of the utility model;

[0047] Figure 10 It is the three-dimensional structure schematic diagram of nut of embodiment 1 of the utility model;

[0048] Figure 11 It is the structure schematic diagram of the lower end surface of base of embodiment 1 of the utility model.

[0049] In the diagram: 1. Nut; 2. Base; 3. Slider; 4. Hoop; 5. Support plate; 6. Support plate placement slot; 7. Slider placement slot; 8. V-shaped shaping groove; 9. First guide slope; 10. Wear-resistant plate; 11. Second guide slope; 12. Return spring; 13. First spring mounting slot; 14. Second spring mounting slot; 15. Cylindrical protrusion; 16. Cylindrical groove; 17. Screw; 18. Guide post; 19. Guide hole. Detailed Implementation

[0050] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0051] Example 1

[0052] like Figures 1 to 11 As shown, the nut forming mold is used for shaping the nut; the nut 1 is a hexagonal nut with a through hole in the center; the adjacent outer surfaces of the nut are rounded; the forming mold includes a base 2, a slider 3, a hoop 4, and a support plate 5;

[0053] The upper surface of the base is provided with a tray placement groove 6; the tray is elastically connected to the tray placement groove.

[0054] The hoop is detachably fixed on the base, and a slider placement groove 7 is provided in the center of the hoop;

[0055] Three sliders are arranged at equal angles and distances around the slider placement groove and above the tray. A V-shaped shaping groove 8 is provided at the end of the slider closest to the center of the tray. A first guide slope 9 is provided at the end of the slider away from the center of the tray, and the first guide slope is inclined downwards towards the center of the base. A wear-resistant plate 10 is provided on the inner side wall of the slider placement groove opposite to the first guide slope, and a second guide slope 11 is provided on the end face of the wear-resistant plate. The first guide slope and the second guide slope are in contact and have the same inclination angle.

[0056] As the slider moves down, the three sliders move along the corresponding second guide slope towards the center of the support plate; when the slider moves to the bottom, the V-shaped shaping grooves of the three sliders form a hexagon that matches the nut.

[0057] The V-shaped grooves of the three sliders form a hexagon that matches the dimensions of the standard nut. The depth of the hexagon formed by the V-shaped grooves of the three sliders can accommodate five nuts stacked together.

[0058] The shape of the slider placement slot matches the three sliders distributed around it, which restricts the sliders to move only along the second guide ramp without wobbling or deviating.

[0059] The supporting plate is elastically connected with the supporting plate placing groove through six reset springs 12.

[0060] Six first spring mounting grooves 13 are arranged equidistantly and equiangularly around the supporting plate placing groove, and six second spring mounting grooves 14 are arranged equidistantly and equiangularly around the lower end surface of the supporting plate. The first spring mounting grooves and the second spring mounting grooves correspond to each other, and the two ends of the reset spring are respectively mounted in the corresponding first spring mounting groove and second spring mounting groove.

[0061] A cylindrical protrusion 15 is arranged at the center of the supporting plate placing groove, and a cylindrical recess 16 matching the cylindrical protrusion is arranged at the bottom of the supporting plate. The cylindrical protrusion and the cylindrical recess are connected through a screw 17.

[0062] The cylindrical protrusion is a hollow protrusion. The upper end of the screw is fixedly connected with the top of the cylindrical recess, and the lower end of the screw is located inside the cylindrical protrusion. The lower end of the screw can move up and down along the cylindrical protrusion.

[0063] Three guide columns 18 are arranged equidistantly and equiangularly around the outside of the supporting plate placing groove. The three guide columns are all inclined downward and point to the center of the supporting plate placing groove.

[0064] A guide hole 19 matching the guide column is arranged on the slider, the guide column is inserted into the corresponding guide hole, and the slider can move up and down along the guide column.

[0065] The inclination angle of the guide column is the same as the inclination angle of the first guide inclined surface of the corresponding slider.

[0066] Principle of action:

[0067] In use, the above-mentioned overall shaping die is fixedly installed (the specific installation method can be selected according to the prior art) on a press machine, so that the punch is aligned with the slider. As shown in the figure, at this time, the overall shaping die is in an open state. At this time, the nuts that need to be shaped are stacked and placed between the three sliders according to the shape, and a total of five nuts are loaded. Figure 2 After the nuts are loaded, the nut loading is observed to be correct, and the shaping can be started.

[0068] After the shaping is started, the slider moves downward along the second guide inclined surface under the action of the press machine until it moves to the lowermost end. As shown in the figure, at this time, the overall shaping die is in a closed state. Figure 3 When the shaping is completed, the punch of the press machine moves upward, the reset spring resets and pushes the supporting plate to move upward, and at the same time, the three sliders move upward. At this time, the three sliders are opened, and the shaped nuts can be taken out.

[0069] The technical scheme of the utility model is not limited to the above specific embodiments, and any technical modification made according to the technical scheme of the utility model falls within the protection scope of the utility model.

Claims

1. A nut overall shaping die for shaping a nut; the nut is a hexagonal nut, a through hole is arranged in the center of the nut; a fillet is arranged between the adjacent surfaces of the outer part of the nut; the overall shaping die comprises a base; characterized in that: The slider, the hoop, and the supporting plate are also included. The upper end surface of the base is provided with a supporting plate placing groove. The hoop is detachably fixed on the base, and the center of the hoop is provided with a slider placing groove. Three sliders are provided, and the three sliders are equiangularly and equidistantly arranged in the slider placing groove and above the supporting plate. The end of the slider close to the center of the supporting plate is provided with a V-shaped shaping groove.

2. The nut bulk sizing die of claim 1, wherein: The inner side wall of the slider placing groove opposite to the first guide slope is provided with a wear-resistant sheet, and the end surface of the wear-resistant sheet is provided with a second guide slope.

3. The nut bulk sizing die of claim 1 wherein: The first guide slope and the second guide slope are in contact and have the same inclination angle.

4. The nut block sizing die of claim 1 wherein: When the slider moves downward, the three sliders move to the center of the supporting plate along the corresponding second guide slopes. When the slider moves to the lowermost position, the V-shaped shaping grooves of the three sliders surround a hexagon matching the nut. The supporting plate and the supporting plate placing groove are elastically connected through a return spring. The center of the supporting plate placing groove is provided with a cylindrical protrusion, and the bottom of the supporting plate is provided with a cylindrical groove matching the cylindrical protrusion. The cylindrical protrusion and the cylindrical groove are connected through a screw. Three guide columns are equiangularly and equidistantly arranged outside the supporting plate placing groove. The slider is provided with a guide hole matching the guide column, the guide column is inserted into the corresponding guide hole, and the slider can move up and down along the guide column. The inclination angle of the guide column is the same as the inclination angle of the first guide slope of the corresponding slider.

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