Size extrusion forming device for sighting device parts

Abstract

The utility model belongs to the technical field of sighting device part machining and forming, and particularly relates to a sighting device part size extrusion forming device which comprises a lower die assembly and an upper die assembly installed above the lower die assembly in a lifting mode, and a pre-pressing insert is arranged at the bottom of the upper die assembly. A detachable tungsten steel shape righting core is arranged at the top of the lower die assembly, a shape righting hole used for conducting extrusion shape righting on a part is formed in the axial axis of the tungsten steel shape righting core in a penetrating mode, a pre-pressing insert enables the part to be located above the shape righting hole based on lifting, and an ejector pin rod used for ejecting the part out is further arranged above the upper die assembly. The pre-pressing insert and the tungsten steel shape righting core which are matched with each other are additionally arranged on the upper die assembly and the lower die assembly, so that a part can be conveniently positioned in the shape righting hole in the tungsten steel shape righting core, and automatic positioning of equipment before shape righting is realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sighting instrument parts processing forming technical field, specifically related to a sighting instrument parts size extrusion forming device. BACKGROUND

[0002] Sighting instrument parts because product precision is high, the structure is complex, adopts powder injection forming mode to produce, in the sintering process will produce high temperature deformation because of temperature is too high, the conventional production mode is: injection forming - inspection - polishing - surface treatment, in this production link, because the product appears unqualified position is not thorough, the detection difficulty is high, the staff grinding technology requirement is high, the time of spending is long to correct a product, and the qualified rate is low, therefore the production cost is higher.

[0003] The industry will carry out shaping pretreatment to the workpiece for this problem, but according to different products, the shaping treatment mode is different, usually, for small micro products, adopt hydraulic press extrusion and tooling shaping, large and medium-sized products adopt hydraulic press to match tooling shaping correction.For some products, batch artificial grinding is also needed.But manual processing is time-consuming and laborious, and the yield cannot be guaranteed. UTILITY MODEL CONTENTS

[0004] The utility model is aimed at providing a sighting instrument parts size extrusion forming device to solve the problems raised in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a sighting instrument parts size extrusion forming device, comprising: a lower die assembly and an upper die assembly installed above the lower die assembly through lifting, the bottom of the upper die assembly is provided with a pre-pressing insert, the top of the lower die assembly is provided with a detachable tungsten steel shaping core, the axial shaft center of the tungsten steel shaping core is provided with a shaping hole for extruding and shaping the parts, and the pre-pressing insert is positioned above the shaping hole based on lifting.

[0006] Preferably, the upper die assembly is further provided with a ejector rod for ejecting the parts, the pre-pressing insert is longitudinally provided with a through hole for the ejector rod to pass through, the bottom of the lower die assembly is provided with a discharge hole in communication with the bottom of the shaping hole, and the ejector rod pushes the parts out of the shaping hole and the discharge hole based on lifting.

[0007] Preferably, the upper die assembly is sequentially provided with an upper die fixing plate and an upper die seat from top to bottom, the top of the upper die seat is provided with an inlay hole for accommodating the pre-pressing insert, the pre-pressing insert is inserted in the inlay hole from top to bottom, the upper die fixing plate is detachably installed on the top of the upper die seat, and the top end of the through hole penetrates the upper die fixing plate.

[0008] Preferably, a second spring for automatic pushing is arranged between the upper die fixing plate and the pre-pressing insert, and a spring hole for accommodating the bottom end of the second spring is formed in the top of the pre-pressing insert.

[0009] Preferably, a thimble fixing plate for fixing the thimble rod is further arranged above the upper die fixing plate, and the upper end of the thimble rod is detachably installed between the thimble fixing plate and an upper die cover plate, and a first spring is arranged between the upper die cover plate and the upper die seat and penetrates through the thimble fixing plate and the upper die fixing plate.

[0010] Preferably, a guide rod is longitudinally arranged at each corner of the bottom of the upper die cover plate, and the four guide rods penetrate through the thimble fixing plate, the upper die fixing plate, the upper die seat and the lower die assembly.

[0011] Preferably, the lower die assembly comprises a lower die seat and a base arranged in sequence from top to bottom, and the discharge hole is installed on the base in penetration, and the bottom of the lower die seat penetrates upwardly and is provided with a mounting hole for accommodating the tungsten steel straightening core.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] (1) The utility model discloses a pre-pressing insert and a tungsten steel straightening core arranged in cooperation with the upper die assembly and the lower die assembly, so that the parts can be positioned in the straightening hole on the tungsten steel straightening core, and automatic positioning of the equipment before straightening is realized.

[0014] (2) The utility model discloses a thimble rod arranged on the upper die assembly, and the thimble rod can drive the parts to extrude through the straightening hole and the discharge hole, so that the equipment can extrude and straighten the parts and discharge the parts.

[0015] (3) The utility model discloses a second spring, and the elastic force of the second spring can press the parts on the pre-pressing insert, so that interference of the pre-pressing insert with the thimble rod when the thimble rod descends is avoided, and the pre-pressing insert can be automatically pushed out and reset on the upper die assembly after the upper die assembly is lifted.

[0016] (4) The utility model discloses a first spring, and the elastic force of the first spring can avoid interference of the thimble rod with the pre-pressing insert when the thimble rod is automatically reset and lifted on the pre-pressing insert. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a perspective view of the utility model;

[0018] Figure 2 It is a partial sectional view of the utility model;

[0019] Figure 3 It is the first explosion diagram of the utility model;

[0020] Figure 4 The second exploded view of the utility model;

[0021] In the figure: 1, upper die cover plate; 2, thimble fixed plate; 3, upper die fixed plate; 4, upper die seat; 5, lower die seat; 6, base; 7, guide rod; 8, first spring; 9, thimble rod; 10, spring hole; 11, second spring; 12, inlay hole; 13, pre-press inlay; 14, mounting hole; 15, tungsten steel orthopedic core; 16, discharge hole; 17, through hole. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0023] Reference Figures 1-3 As shown in the utility model provides a size extrusion forming device of sighting appliance parts, including: lower die assembly and the upper die assembly of being installed above the lower die assembly, the bottom of upper die assembly is equipped with pre-press inlay 13, the top of lower die assembly is equipped with detachable tungsten steel orthopedic core 15, the axial shaft center of tungsten steel orthopedic core 15 is equipped with the orthopedic hole for extruding orthopedic of parts, pre-press inlay 13 is positioned above the orthopedic hole based on lifting.

[0024] The above, using the upper die assembly, lower die assembly, pre-press inlay 13 and tungsten steel orthopedic core 15 provided by the utility model, the top end of pre-press inlay 13 is equipped with counterbore, pre-press inlay 13 cannot be taken out from the lower of inlay hole 12, pre-press inlay 13 is put in from the upper of inlay hole 12, and upper die fixed plate 3 is detachably installed on upper die seat 4 by bolt, when upper die seat 4 is lowered, the parts on orthopedic hole are pressed by pre-press inlay 13, so that the parts are pressed into orthopedic hole, which is convenient for pressing orthopedic of parts.

[0025] Further, in order to facilitate the replacement of tungsten steel orthopedic core 15, referring to Figures 2-4 As shown in the utility model provides a size extrusion forming device of sighting appliance parts, including: lower die assembly and the upper die assembly of being installed above the lower die assembly, the bottom of upper die assembly is equipped with pre-press inlay 13, the top of lower die assembly is equipped with detachable tungsten steel orthopedic core 15, the axial shaft center of tungsten steel orthopedic core 15 is equipped with the orthopedic hole for extruding orthopedic of parts, pre-press inlay 13 is positioned above the orthopedic hole based on lifting.

[0026] In the utility model, in combination with Figures 2-4 As shown, the upper die assembly is further provided with ejector rod 9 for ejecting the parts, and the pre-pressing insert 13 is longitudinally provided with through hole 17 for the passage of the ejector rod 9, and the bottom of the lower die assembly is provided with discharge hole 16 in communication with the bottom of the straightening hole, and the ejector rod 9 is pushed out of the straightening hole and the discharge hole 16 based on the lifting.

[0027] In combination with Figures 2-4 As shown, the upper die assembly is further provided with ejector rod 9 for ejecting the parts, and the pre-pressing insert 13 is longitudinally provided with through hole 17 for the passage of the ejector rod 9, and the bottom of the lower die assembly is provided with discharge hole 16 in communication with the bottom of the straightening hole, and the ejector rod 9 is pushed out of the straightening hole and the discharge hole 16 based on the lifting.

[0028] The above, in the use of the utility model provides the ejector rod 9, the top end of ejector rod 9 is provided with counterbore, and the top of ejector rod 9 is installed on ejector retainer plate 2 from top to bottom, and after ejector retainer plate 2 is removed, ejector rod 9 can be taken out from the top of ejector retainer plate 2, and upper die cover plate 1 is detachably installed on ejector retainer plate 2 by bolt. When the upper die holder 4 and the lower die holder 5 are separated, the elastic force of the first spring 8 is released, thereby driving the ejector retainer plate 2 to separate from the upper die holder 4, and further driving the ejector rod 9 to enter the through hole 17, so that the ejector rod 9 is reset, thereby preventing the ejector rod 9 from affecting the pre-pressing insert 13 when the pre-pressing insert 13 is pre-pressed on the parts.

[0029] Further, in order to facilitate the lifting and guiding of the upper die assembly and the lower die assembly, referring to Figures 2-3 As shown, the four corners of the bottom of the upper die cover plate 1 are longitudinally provided with guide rods 7, and the four guide rods 7 are all through the ejector retainer plate 2, the upper die fixed plate 3, the upper die holder 4 and the lower die assembly. The lifting of the ejector retainer plate 2, the upper die fixed plate 3, the upper die holder 4 and the lower die holder 5 can be guided by the guide rods 7, so that the pre-pressing insert 13 and the ejector rod 9 can be stably abutted on the parts, and the stable deviation of the parts during straightening can be avoided.

[0030] Further, in order to avoid the interference of the pre-pressing insert 13 to the lifting of the ejector rod 9, referring to Figures 2-4As shown, the upper die assembly is sequentially provided with an upper die fixed plate 3 and an upper die seat 4 from top to bottom, a setting hole 12 accommodating a pre-pressing insert 13 is penetrated through the top of the upper die seat 4 from top to bottom, the pre-pressing insert 13 is penetrated and connected in the setting hole 12 from top to bottom, the upper die fixed plate 3 is detachably installed on the top of the upper die seat 4, the top end of the through hole 17 penetrates the upper die fixed plate 3, the second spring 11 for automatic ejection is arranged between the upper die fixed plate 3 and the pre-pressing insert 13, and the spring hole 10 accommodating the bottom end of the second spring 11 is arranged on the top of the pre-pressing insert 13. The pre-pressing insert 13 can be elastically lifted in the setting hole 12 through the second spring 11, and the pre-pressing insert 13 is elastically pressed on the part when the upper die seat 4 is lowered, and meanwhile, the pre-pressing insert 13 is lifted in the setting hole 12 through the second spring 11 when the upper die seat 4 and the lower die seat 5 are closed.

[0031] In summary, the working principle of the device is as follows: the product is placed on the hydraulic machine workbench, the product is placed on the top of the orthopedic hole, the product is pressed by the hydraulic machine, the pre-pressing insert 13 first contacts the workpiece, the workpiece is pre-pressed and corrected, then the upper die seat 4 and the lower die seat 5 are contacted, then the thimble rod 9 is moved downward under the pressure of the upper die cover plate 1, the workpiece is pressed through the working area of the tungsten steel orthopedic core 15, finally, the workpiece is unloaded through the discharge hole 16 in the middle of the base 6; after the action is completed, the workpiece is reset under the elastic force of the spring; due to the precise fit of the internal insert, the workpiece can be corrected to the qualified size at one time.

[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A size-extrusion molding device for parts of a sighting instrument, characterized in that, The utility model relates to a kind of extrusion die sets, including: lower mould component and upper mould component installed above lower mould component by lifting, the bottom of the upper mould component is equipped with pre-pressing insert (13), the top of the lower mould component is equipped with detachable tungsten steel orthopedic core (15), the axial axial center of the tungsten steel orthopedic core (15) is equipped with orthopedic hole for the extrusion orthopedic of spare part, pre-pressing insert (13) is positioned above the orthopedic hole based on lifting.

2. The apparatus for size extrusion forming of a component of a sighting device according to claim 1, wherein: The top of the upper mould component is further equipped with ejector rod (9) for ejecting spare part, the pre-pressing insert (13) is vertically penetrated with through hole (17) for the passage of the ejector rod (9), the bottom of the lower mould component is penetrated with discharge hole (16) that is communicated with the bottom of orthopedic hole, and the ejector rod (9) pushes spare part out from the orthopedic hole and the discharge hole (16) based on lifting.

3. The apparatus according to claim 2, wherein: The upper mould component is sequentially equipped with upper mould fixed plate (3) and upper mould seat (4) from top to bottom, the top of the upper mould seat (4) is penetrated downward with inlay hole (12) for accommodating pre-pressing insert (13), the pre-pressing insert (13) is vertically inserted in inlay hole (12) from top to bottom, the upper mould fixed plate (3) is detachably installed on the top of the upper mould seat (4), and the top end of the through hole (17) is penetrated through the upper mould fixed plate (3).

4. The apparatus according to claim 3, wherein: Second spring (11) for automatic ejection is equipped between the upper mould fixed plate (3) and pre-pressing insert (13), and spring hole (10) for accommodating the bottom end of second spring (11) is formed in the top of the pre-pressing insert (13).

5. The apparatus for size extrusion of a component of a sighting device of claim 3, wherein: The top of the upper mould fixed plate (3) is further equipped with ejector fixed plate (2) and upper mould cover plate (1) for fixing ejector rod (9), the top end of the ejector rod (9) is detachably installed between ejector fixed plate (2) and upper mould cover plate (1), and first spring (8) is penetrated through the ejector fixed plate (2) and the upper mould fixed plate (3) between the upper mould cover plate (1) and the upper mould seat (4).

6. The apparatus for size extrusion forming of a component of a sighting device according to claim 5, wherein: The bottom of the upper mould cover plate (1) is longitudinally equipped with guide rod (7) in four corners, and the four guide rods (7) are penetrated through the ejector fixed plate (2), the upper mould fixed plate (3), the upper mould seat (4) and the lower mould component.

7. The apparatus for size extrusion of a component of a sighting device of claim 2, wherein: The lower mould component includes lower mould seat (5) and base (6) sequentially equipped from top to bottom, the discharge hole (16) is installed on the base (6) and penetrated, and the bottom of the lower mould seat (5) is penetrated upward with mounting hole (14) for accommodating tungsten steel orthopedic core (15).

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