Stamping device for middle-section tooth-shaped product

Abstract

The utility model discloses a stamping device for a middle-section tooth-shaped product, and relates to the technical field of stamping, the stamping device comprises a lower die assembly and an upper die assembly, the upper die assembly comprises an upper die base and a columnar forming punch fixedly assembled at the bottom of the upper die base; the lower die assembly comprises a lower die base, a female die fixedly assembled on the top of the lower die base and an inner supporting piece, a columnar forming groove coaxial with the columnar forming punch is formed in the female die, the inner supporting piece is assembled in the columnar forming groove in an axial sliding mode through an elastic assembly, and when the inner supporting piece is located at the uppermost end of the sliding stroke of the inner supporting piece, the columnar forming punch is inserted into the columnar forming groove. The top face of the inner supporting piece is flush with the top face of the columnar forming groove. The middle section tooth-shaped product stretching forming device can achieve stretching forming of a middle section tooth-shaped product so as to solve the technical problems which cannot be solved by a traditional stretching technology and meet the requirement of customers for higher product quality, and compared with a traditional machining mode and the like, the middle section tooth-shaped product stretching forming device is faster in production and saves more cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to punch technology field, concretely is a kind of punch device for middle segment tooth profile product. BACKGROUND

[0002] As Figure 2 The product shown in the figure, this type of product is produced by machining many times, and the middle region is a difficulty in stretch forming during mold development. Since the product is tooth-shaped, using traditional stretching process can cause local material accumulation, resulting in bruising and extrusion burr, which cannot meet the requirements. SUMMARY

[0003] The utility model discloses a kind of punch device for middle segment tooth profile product, to solve the problem raised in above background technology.

[0004] To achieve the above invention purposes, the utility model uses the following technical solutions:

[0005] The utility model provides a kind of punch device for middle segment tooth profile product, including lower die assembly and upper die assembly, the upper die assembly includes upper die holder and the columnar forming punch fixedly assembled in the bottom of upper die holder;The lower die assembly group includes lower die holder, female die fixedly assembled at the top of lower die holder and inner support, the inside of female die is formed with the columnar forming groove coaxial with columnar forming punch, and the inner support is slidably assembled in columnar forming groove by elastic component;When the inner support is at the uppermost end of its sliding stroke, the top surface of the inner support is flush with the top surface of columnar forming groove, and when the inner support is at the lowermost end of its sliding stroke, a forming section is formed in the columnar forming groove above the inner support.

[0006] The forming section includes upper forming channel, tooth forming channel and lower forming channel arranged in sequence from top to bottom, wherein the diameter of the upper forming channel is greater than the diameter of the tooth forming channel, which is greater than the diameter of the lower forming channel, and the inner wall of the tooth forming channel is uniformly provided with inwardly protruding teeth in the circumferential direction, and the diameter of the upper forming channel is equal to the outer diameter of the product to be punched.

[0007] Further, the bottom of the lower die holder is detachably mounted with an upper backing plate, and the bottom of the lower backing plate is detachably mounted with a fixed plate, a columnar mounting groove is formed at the center position of the fixed plate, an annular limiting groove is formed on the outside of the columnar forming punch, the annular limiting groove divides the columnar forming punch into a mounting portion and a punching portion, the mounting portion is fitted into the columnar mounting groove, and the fixed plate is provided with a punch press block corresponding to the annular limiting groove through bolts, and the punch press block has a limiting portion extending into the annular limiting groove.

[0008] Further, the top of the lower die seat is detachably provided with a lower base plate, and the top of the lower base plate is provided with a lower die plate, the center of the lower die plate is provided with a first through hole, the concave die comprises a concave die pad, a concave die fixing block, an inner tooth ring, a ring-shaped pad and a concave die clamping seat, the concave die pad is arranged at the position of the first through hole on the top of the lower die plate, the concave die pad is formed with a first convex through groove coaxial with the first through hole, the first convex through groove comprises a second through hole and a third through hole arranged in sequence from bottom to top, the concave die fixing block is arranged on the top of the concave die pad, and the concave die fixing block is provided with a second convex through groove coaxial with the first through hole, the second convex through groove comprises a fourth through hole and a fifth through hole arranged in sequence from bottom to top, the inner tooth ring and the ring-shaped pad are longitudinally stacked in the fourth through hole, and the concave die clamping seat is sleeved on the outer side of the concave die pad and the concave die fixing block, the inner side of the concave die clamping seat is downwardly protruded to form a limiting protrusion, and the concave die fixing block is formed with a limiting groove corresponding to the limiting protrusion.

[0009] The fifth through hole, the inner side of the inner tooth ring 35, the inner side of the ring-shaped pad, the second through hole, the third through hole and the first through hole form a columnar forming groove.

[0010] Further, the top of the concave die fixing block, the inner tooth ring and the ring-shaped inner side is provided with a circular arc surface.

[0011] Further, the bottom of the lower die seat is connected with a lower supporting plate through a plurality of supporting legs, the elastic assembly comprises a nitrogen gas spring, and the top rod of the nitrogen gas spring is fixedly connected with the bottom end of the inner supporting piece.

[0012] Further, the top of the lower die plate is provided with a discharging plate parallel to the lower die plate through a mounting piece, and the discharging plate has a spacing with the concave die.

[0013] Compared with the prior art, the above one or more technical solutions have the following beneficial effects:

[0014] The utility model discloses a stretch forming of middle section tooth profile product, to solve the technical difficulty that traditional stretch forming process cannot solve, satisfy the demand of higher product quality of customer, and this device is more fast production than traditional machining mode, and more cost -effective.

[0015] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings constituting a part of the utility model are used to provide further understanding of the utility model, and the illustrative embodiment of the utility model and the explanation thereof are used to explain the utility model, and do not constitute improper limitation to the utility model.

[0017] Figure 1It is the product structure schematic diagram of the utility model;

[0018] Figure 2 It is the product structure schematic diagram of the utility model;

[0019] Figure 3 It is the overall structure schematic diagram of the utility model;

[0020] Figure 4 It is Figure 3 The A place partial structure schematic diagram of the utility model;

[0021] Figure 5 It is Figure 4 Another state structure schematic diagram of the utility model;

[0022] Figure 6 It is the die split structure schematic diagram of the utility model;

[0023] Figure 7 It is the structure schematic diagram of the utility model when closing mold;

[0024] Figure 8 It is the structure schematic diagram of the utility model when opening mold.

[0025] In the drawing,

[0026] 11-upper columnar surface, 12-middle tooth-shaped surface, 13-lower columnar surface, 2-upper die assembly, 21-columnar forming punch, 211-annular limiting groove, 222-mounting part, 223-punching part, 22-upper die seat, 23-upper backing plate, 24-fixing plate, 25-punch pressing block, 26-pad foot, 27- support plate, 28-unloading plate, 3-lower die assembly, 31-lower die seat, 32-columnar forming groove, 321-upper forming channel, 322-tooth forming channel, 323-lower forming channel, 324-tooth, 33-die pad block, 331-second through hole, 332-third through hole, 34-die fixing block, 341-fourth through hole, 342-fifth through hole, 343-limiting groove, 35-inner tooth ring, 36-annular pad block, 37-die clamping seat, 371-limiting protrusion, 38-inner support, 39-lower die plate, 391-first through hole, 4-elastic assembly, 41-nitrogen gas spring, 42-ejector pin. DETAILED DESCRIPTION

[0027] In order to make the person skilled in the art better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.

[0028] Referring to Figures 1-8 The utility model provides a kind of stamping device for middle section tooth shape product, for the stamping product (such as Figure 1 As shown) to be stamped is stamped to form middle section tooth shape product (such as Figure 2 As shown), wherein the product to be stamped is overall tubular and one end is sealed, the outer wall of middle section tooth shape product includes upper cylindrical surface 11, middle section tooth surface 12 and lower cylindrical surface 13, the diameter of the upper cylindrical surface 11 is greater than middle section tooth surface 12 and greater than lower cylindrical surface 13, wherein the product to be stamped can be stretched by stamping equipment in conventional technology.

[0029] Specific stamping device for middle section tooth shape product includes lower die assembly 3 and upper die assembly 2, and the upper die assembly 2 includes upper die holder 22 and cylindrical forming punch 21 fixedly assembled at the bottom of upper die holder 22;The lower die assembly includes lower die holder 32, concave die fixedly assembled at the top of lower die holder 32, and inner support 38, the inside of the concave die is formed with cylindrical forming groove 32 coaxial with cylindrical forming punch 21, and the inner support 38 is axially slidably assembled in cylindrical forming groove 32 by elastic assembly 4;When the inner support 38 is at the uppermost end of its sliding stroke, the top surface of the inner support 38 is flush with the top surface of the cylindrical forming groove 32, and when the inner support 38 is at the lowermost end of its sliding stroke, a forming section is formed in the cylindrical forming groove 32 above the inner support 38;The forming section includes upper forming channel 321, tooth forming channel 322 and lower forming channel 323 arranged in order from top to bottom, wherein the diameter of the upper forming channel 321 is greater than the diameter of the tooth forming channel 322 and greater than the diameter of the lower forming channel 323, and the inner wall of the tooth forming channel 322 is uniformly provided with inwardly protruding teeth 324 in the circumferential direction, and the diameter of the upper forming channel 321 is equal to the outer diameter of the product to be stamped.

[0030] In use, the inner support 38 is at the uppermost end of its sliding stroke under the elastic force of the elastic assembly 4, at this time, the product to be stamped (such as Figure 1 As shown) is placed on the top of the inner support 38, and the product to be stamped is adjusted to keep coaxial with the cylindrical forming groove 32;

[0031] During operation, the upper die assembly 2 moves relative to the lower die assembly 3 under the drive of the driving device. During this process, the columnar forming punch 21 gradually extends into the interior of the product to be punched. When the bottom end of the columnar forming punch 21 contacts the sealing end of the product to be punched, it will push the product to be punched downward. At this time, the inner support 38 will compress the elastic component 4 and move downward together. During this process, when the bottom end of the product to be punched enters the tooth forming channel 322, the wall thickness of the product to be punched will be stretched and tooth grooves will be formed on its outside. When the bottom end of the product to be punched enters the lower forming channel 323, the wall thickness of the product to be punched will be stretched again and the tooth grooves will be eliminated. When the inner support 38 moves to the lower end of its sliding stroke, the upper die assembly 2 moves down to the lower end of its sliding stroke accordingly. At this time, the product to be punched passes through the upper forming channel 321, the tooth forming channel 322 and the lower forming channel 323 in sequence to complete the product forming (such as Figure 2 As shown), after molding, the upper mold assembly 2 is reset, and under the elastic action of the elastic assembly 4, the inner supporting member 38 can automatically eject the molded product from the columnar molding groove 32.

[0032] This device can realize the stretching forming of mid-section tooth-shaped products to solve the technical difficulties that cannot be solved by traditional stretching processes and meet customers' needs for higher product quality. In addition, this device is faster to produce and more cost-effective than traditional machining methods.

[0033] In this specific embodiment, the bottom of the lower die base 32 is detachably mounted with an upper pad 23, and the bottom of the lower pad is detachably mounted with a fixed plate 24, a columnar mounting groove is provided through the center position of the fixed plate 24, and an annular limiting groove 211 is provided on the outer side of the columnar forming punch 21, the annular limiting groove 211 divides the columnar forming punch 21 into a mounting portion 212 and a stamping portion 213, the mounting portion 212 is adapted in the columnar mounting groove, and a punch pressing block 25 is installed on the fixed plate 24 corresponding to the annular limiting groove 211 by bolts, and the punch pressing block 25 has a limiting portion extending into the annular limiting groove.

[0034] Based on the above design, it is convenient for staff to maintain and replace the columnar forming punch 21.

[0035] In this specific embodiment, a lower pad is detachably mounted on the top of the lower die base 32 , and a lower die plate 39 is mounted on the top of the lower pad. A first through hole 391 is formed through the center of the lower die plate 39 .

[0036] The concave die comprises a concave die pad 33, a concave die fixing block 34, an inner tooth ring 35, a ring-shaped pad 36 and a concave die clamping seat 37.

[0037] The concave die fixing block 34 is arranged on the top of the concave die pad 33, and a second convex through groove coaxial with the first through hole 391 is arranged through the concave die fixing block 34, wherein the second convex through groove comprises a fourth through hole 341 and a fifth through hole 342 arranged in sequence from bottom to top.

[0038] The inner tooth ring 35 and the ring-shaped pad 36 are longitudinally stacked in the fourth through hole 341, and the concave die clamping seat 37 is sleeved on the outer side of the concave die pad 33 and the concave die fixing block 34.

[0039] The inner side top end of the concave die clamping seat 37 is downwardly protruded to form a limiting protrusion 371, and the concave die fixing block 34 corresponds to the limiting protrusion 371 to form a limiting groove 343.

[0040] The fifth through hole 342, the inner side of the inner tooth ring 35, the inner side of the ring-shaped pad 36, the second through hole 331, the third through hole 332 and the first through hole 391 constitute a columnar forming groove 32.

[0041] In the embodiment, the top of the concave die fixing block 34, the inner tooth ring 35 and the ring-shaped pad 36 are all provided with a circular arc surface, so that the product material is prevented from being accumulated when the wall thickness of the product to be punched is stretched, and the product quality is affected.

[0042] In the embodiment, the bottom of the lower die seat 32 is connected with a lower supporting plate 27 through a plurality of supporting legs 26, and the elastic assembly 4 comprises a nitrogen spring 41, and the top rod 42 of the nitrogen spring 41 is fixedly connected with the bottom end of the inner supporting piece 38.

[0043] In the embodiment, the top of the lower die plate 39 is provided with a discharging plate 28 parallel to the lower die plate 39 through a mounting piece, and the discharging plate 28 has a spacing with the concave die.

[0044] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A punching device for a mid-section toothed product, comprising a lower die assembly and an upper die assembly, characterized in that: The upper die assembly includes an upper die base and a columnar forming punch fixedly assembled at the bottom of the upper die base; the lower die assembly includes a lower die base, a die fixedly assembled at the top of the lower die base, and an inner supporting member, wherein a columnar forming groove coaxial with the columnar forming punch is formed inside the die, and the inner supporting member is axially slidably assembled in the columnar forming groove by an elastic member; when the inner supporting member is at the uppermost end of its sliding stroke, the top surface of the inner supporting member is flush with the top surface of the columnar forming groove, and when the inner supporting member is at the lowermost end of its sliding stroke, a forming section is formed in the columnar forming groove above the inner supporting member; The forming section includes an upper forming channel, a tooth forming channel and a lower forming channel arranged in sequence from top to bottom, wherein the diameter of the upper forming channel is larger than the diameter of the tooth forming channel, which is larger than the diameter of the lower forming channel, and the inner wall of the tooth forming channel is evenly provided with inwardly protruding teeth along the circumferential direction, and the diameter of the upper forming channel is equal to the outer diameter of the product to be stamped.

2. The punching device for mid-segment toothed products according to claim 1, characterized in that: The bottom of the lower die base is detachably mounted with an upper pad, and the bottom of the lower pad is detachably mounted with a fixed plate, a columnar mounting groove is provided through the center position of the fixed plate, an annular limiting groove is provided on the outer side of the columnar forming punch, the annular limiting groove divides the columnar forming punch into a mounting portion and a stamping portion, the mounting portion is adapted in the columnar mounting groove, a punch pressing block is installed with bolts at the corresponding annular limiting groove of the fixed plate, and the punch pressing block has a limiting portion extending into the annular limiting groove.

3. The punching device for mid-segment toothed products according to claim 1, characterized in that: The top of the lower die base is detachably mounted on a lower pad, and the top of the lower pad is mounted on a lower template, and the center of the lower template is penetrated by a first through hole, and the die includes a die pad, a die fixing block, an inner gear ring, an annular pad and a die holder, and the die pad is arranged at the first through hole position on the top of the lower template, a first convex through groove coaxial with the first through hole is formed in the die pad, the first convex through groove includes a second through hole and a third through hole sequentially arranged from bottom to top, the die fixing block is arranged on the top of the die pad, and a second convex through groove coaxial with the first through hole is penetrated in the die fixing block, the second convex through groove includes a fourth through hole and a fifth through hole sequentially arranged from bottom to top, the inner gear ring and the annular pad are longitudinally stacked and adapted to be fitted in the fourth through hole, the die holder is sleeved on the outer sides of the die pad and the die fixing block, the inner top end of the die holder protrudes downward to form a limiting protrusion, and the die fixing block forms a limiting groove corresponding to the limiting protrusion; The fifth through hole, the inner side of the inner gear ring 35, the inner side of the annular spacer, the second through hole, the third through hole and the first through hole constitute a columnar forming groove.

4. The punching device for mid-segment toothed products according to claim 3, characterized in that: The die fixing block, the inner gear ring and the top of the inner ring are all provided with arc surfaces.

5. The punching device for mid-segment toothed products according to claim 1, characterized in that: The bottom of the lower die base is connected to a lower supporting plate through a plurality of pads. The elastic component includes a nitrogen spring. The top rod of the nitrogen spring extends and is fixedly connected to the bottom end of the inner supporting member.

6. The punching device for mid-segment toothed products according to claim 3, characterized in that: The top of the lower template is provided with a stripping plate parallel to the lower template through a mounting piece, and a distance is provided between the stripping plate and the concave mold.

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