CN212495033U - Forming die of screw with multiple steps on rod part - Google Patents
Forming die of screw with multiple steps on rod part Download PDFInfo
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- CN212495033U CN212495033U CN202021051325.XU CN202021051325U CN212495033U CN 212495033 U CN212495033 U CN 212495033U CN 202021051325 U CN202021051325 U CN 202021051325U CN 212495033 U CN212495033 U CN 212495033U
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Abstract
A forming die for a rod part multi-step screw comprises an upper die and a lower die. The upper die comprises an upper die main body, an upper die core, a punching rod and a cushion block. The upper die main body comprises a cushion block accommodating cavity and a punch rod accommodating cavity. The upper die core comprises an upper die core main body and a first step-shaped rod part forming hole. The lower die comprises a lower die shell, an inner die, a locking tooth and an ejector rod. The lower die shell comprises a lower die shell main body, a first mounting hole and a second mounting hole. The inner die comprises a sleeve sheet and a combined die. The nest plate comprises a nest plate main body, a nest plate mold core and a first rod body forming hole. The combined die sequentially comprises a first internal die, a second internal die and a third internal die. According to the forming die for the rod part multi-step screw, the Mat-point screw blank is formed at one time, so that the precision of the die is improved, the quality of a product is improved, the die is convenient to maintain, and the maintenance cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of the mould, especially a forming die of many steps of pole portion screw.
Background
The industrial production of the die is used for obtaining various dies and tools of required products by methods such as injection molding, blow molding, extrusion, die casting or forging forming, smelting, stamping and the like. In short, a mold is a tool used to make a shaped article, the tool being made up of various parts, different molds being made up of different parts. The processing of the appearance of an article is realized mainly through the change of the physical state of a formed material. The element has the name of "industrial mother".
At present, a die is used for punching Mat-point screws, the Mat-point screws are step screws, and the simple understanding is that the non-standard screws with more than two steps are provided. However, the existing die for producing the Mat-point screw is of an integrated structure, when the die is used for machining the step-shaped forming hole, the operation is difficult, the step-shaped forming hole is difficult to machine, the precision of the step-shaped forming hole is low, and in addition, the whole die needs to be replaced when the die is damaged, so that the maintenance cost is increased.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a forming die of pole portion multi-step screw convenient to processing to satisfy the industrial demand.
A forming die for a rod part multi-step screw comprises an upper die and a lower die which is arranged at one end of the upper die and used for accommodating a Mat-point screw blank. The upper die comprises an upper die main body, an upper die core fixedly connected to one end of the upper die main body, a punching rod inserted into the upper die main body, and a cushion block arranged in the upper die main body and abutted to one end of the punching rod. The upper die main body comprises a cushion block accommodating cavity and a punching rod accommodating cavity which is arranged at one end of the cushion block accommodating cavity and leads to the upper die core. The upper die core comprises an upper die core main body and a first step-shaped rod part forming hole arranged on the upper die core main body. The punch rod accommodating cavity is communicated with the first step-shaped rod part forming hole. The lower die comprises a lower die shell, an inner die arranged on the lower die shell, a locking tooth arranged at one end of the lower die shell, and a mandril inserted in the inner die. The lower die shell comprises a lower die shell main body, a first mounting hole formed in the lower die shell main body, and a second mounting hole formed in one end of the first mounting hole. The inner die comprises a sleeve sheet accommodated in the first mounting hole and a combined die accommodated in the second mounting hole. The bushing comprises a bushing main body, a bushing mold core arranged on the bushing main body and a first rod body forming hole arranged on the bushing mold core. The combined die sequentially comprises a first internal die, a second internal die and a third internal die. The first inner mold comprises a first inner mold body, a first mold core arranged on the first inner mold body, and a second rod body forming hole arranged on the first mold core. The second inner die comprises a second inner die body, a second die core arranged on the second inner die body, a second step-shaped rod part forming hole arranged on the second die core, and a first ejector rod containing hole arranged on the second die core and at one end of the second step-shaped rod part forming hole. The third inner die comprises a third inner die body and a second ejector rod containing hole arranged on the third inner die body. The central shafts of the first rod body forming hole, the second step rod part forming hole, the first ejector rod containing hole and the second ejector rod containing hole are on the same straight line and are mutually communicated, so that the Mat-point screw blank is contained in the upper die and the lower die and is subjected to punch forming.
Furthermore, the first inner die body comprises a first inner die main body and a first connecting groove arranged at one end of the first inner die main body close to the second inner die.
Furthermore, the second inner die body comprises a second inner die main body, a first connecting piece arranged at one end, close to the first inner die, of the second inner die main body, and a second connecting groove arranged at one end, close to the third inner die, of the second inner die main body, the diameter of the first connecting piece is smaller than that of the second inner die main body, and the first connecting piece is accommodated in the first connecting groove.
Further, the third inner die body comprises a third inner die main body, a second connecting piece arranged at one end, close to the second inner die, of the third inner die main body, and a third connecting piece arranged at one end, opposite to the second inner die, of the third inner die main body, the diameters of the second connecting piece and the third connecting piece are smaller than the diameter of the third inner die main body, and the second connecting piece is accommodated in a second connecting groove.
Furthermore, the locking teeth are sleeved on the third connecting piece, and the outer diameter of the locking teeth is larger than the diameter of the second mounting hole.
Further, the first mounting hole and the outer profile of the shim main body are tapered in a cross section along the center axis of the lower die.
Further, the first shaft molding hole is a hexagonal hole.
Further, the upper mold core, the nest plate mold core, the first mold core and the second mold core are all made of tungsten steel.
Compared with the prior art, the utility model provides a forming die of many steps of pole portion screw passes through go up the mould and the lower mould becomes many steps of pole portion screw with Mat-point screw blank punching press. And the upper die processes and forms one end of the Mat-point screw blank through the first step-shaped rod part forming hole of the upper die core. And the lower die processes and forms the other end of the Mat-point screw blank through the second step rod part forming hole. And the inner die of the lower die comprises a sleeve sheet accommodated in the first mounting hole and a combined die accommodated in the second mounting hole. The composite mold becomes multistage structure, its the composite mold includes a first centre form in proper order, a second centre form, a third centre form, is convenient for process on the first centre form second pole body shaping hole process on the second centre form second step pole portion shaping hole with first ejector pin holding hole, and third centre form processing second ejector pin holding hole, thereby promoted second pole body shaping hole second step pole portion shaping hole first ejector pin holding hole and the machining precision in second ejector pin holding hole. According to the forming die for the rod part multi-step screw, the Mat-point screw blank is formed at one time, so that the precision of the die is improved, the quality of a product is improved, the die is convenient to maintain, and the maintenance cost is reduced.
Drawings
Fig. 1 is the utility model provides a section structure schematic diagram of forming die of pole portion multi-step screw.
Detailed Description
Specific examples of the present invention will be described in further detail below. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.
As shown in fig. 1, it is a schematic structural diagram of a forming mold for a rod multi-step screw provided by the present invention. The forming mold for the rod multi-step screw comprises an upper mold 10 and a lower mold 20 which is arranged at one end of the upper mold 10 and is used for accommodating a Mat-point screw blank (not shown). The forming mold for the multi-step screw with a shaft further includes other functional modules, such as assembling components, etc., which should be known to those skilled in the art, and will not be described in detail herein.
The upper die 10 comprises an upper die main body 11, an upper die core 12 fixedly connected to one end of the upper die main body 11, a punching rod 13 inserted into the upper die main body 11, and a cushion block 14 arranged in the upper die main body 11 and abutted to one end of the punching rod 13.
The upper die main body 11 includes a cushion block accommodating cavity 111 and a punch rod accommodating cavity 112 disposed at one end of the cushion block accommodating cavity 111 and leading to the upper die core 12.
The upper core 12 includes an upper core main body 121, and a first stepped rod portion forming hole 122 provided in the upper core main body 121. During stamping, the end of one end of the Mat-point screw blank 1 is accommodated in the first step rod part forming hole 122, so that the end of one end of the Mat-point screw blank 1 is stamped into a step shape.
The punch 13 is accommodated in the punch accommodating chamber 112, and the punch accommodating chamber 112 and the first stepped rod portion forming hole 122 communicate with each other. During stamping, the connecting position of the stamping rod accommodating cavity 112 and the first stepped rod part forming hole 122 coincides with one end of the stamping rod 13, and the stamping rod 13 is a prior art and is not described herein again.
The pad 14 abuts against one end of the punch 13 to limit the position of the punch 13. The spacer 14 is a prior art and will not be described in detail herein.
The lower mold 20 includes a lower mold shell 21, an inner mold 22 disposed on the lower mold shell 21, a locking tooth 23 disposed on one end of the lower mold shell 21, and a mandrel 24 inserted into the inner mold 22.
The lower mold shell 21 includes a lower mold shell body 211, a first mounting hole 212 formed in the lower mold shell body 211, and a second mounting hole 213 formed at an end of the first mounting hole 212. The first mounting hole 212 and the second mounting hole 213 are both used for receiving the inner mold 22, so that the lower mold shell main body 211 protects the inner mold 22, and thus the first mounting hole 212 and the second mounting hole 213 are both combined with the inner mold 22 for detailed description.
The inner mold 22 includes a sleeve 221 received in the first mounting hole 212, and a split mold 222 received in the second mounting hole 213.
The sleeve 221 includes a sleeve main body 2211, a sleeve core 2212 disposed on the sleeve main body 2211, and a first shaft forming hole 2213 disposed on the sleeve core 2212. In a cross section along the central axis of the lower mold 20, the outer contours of the first mounting hole 212 and the sleeve sheet main body 2211 are tapered to facilitate the installation of the sleeve sheet 221 into the first mounting hole 212. In this embodiment, the first shaft forming hole 2213 is a hexagonal hole so that the shaft of the Mat-point screw blank 1 is punched into a hexagonal prism.
The combined die 222 includes a first internal die 2221, a second internal die 2222, and a third internal die 2223 in sequence.
The first inner mold 2221 includes a first inner mold 2221a, a first core 2221b provided on the first inner mold 2221a, and a second shaft-forming hole 2221c provided on the first core 2221 b. The first inner mold 2221a includes a first inner mold main body 2221d, and a first connecting groove 2221e disposed at one end of the first inner mold main body 2221d close to the second inner mold 2222.
The second inner mold 2222 includes a second inner mold 2222a, a second core 2222b provided on the second core 2222b, a second stepped rod portion forming hole 2222c provided on the second core 2222b, and a first knock-out rod receiving hole 2222d provided on the second core 2222b and at an end of the second stepped rod portion forming hole 2222 c. The second inner mold body 2222a includes a second inner mold body 2222e, a first connecting member 2222f provided at an end of the second inner mold body 2222e close to the first inner mold 2221, and a second connecting groove 2222g provided at an end of the second inner mold body 2222e close to the third inner mold 2223.
The third inner mold 2223 includes a third inner mold body 2223a, and a second knock-pin receiving hole 2223b provided in the third inner mold body 2223 a. The third inner mold body 2223a includes a third inner mold body 2223c, a second connecting member 2223d disposed at an end of the third inner mold body 2223c close to the second inner mold 2222, and a third connecting member 2223e disposed at an end of the third inner mold body 2223c opposite to the second inner mold 2222.
The first connecting part 2222f is received in the first connecting groove 2221e, and the second connecting part 2223d is received in the second connecting groove 2222 g. The diameter of the first connecting part 2222f is smaller than that of the second inner mold body 2222e, and the diameters of the second connecting part 2223d and the third connecting part 2223e are both smaller than that of the third inner mold body 2223c, so that the second inner mold 2222 and the third inner mold body 2223a are stepped, so that the connection among the first inner mold 2221, the second inner mold 2222, and the third inner mold 2223 is stabilized. And the central axes of the first rod body forming hole 2213, the second rod body forming hole 2221c, the second step rod part forming hole 2222c, the first ejector rod containing hole 2222d, and the second ejector rod containing hole 2223b are on the same straight line and are mutually communicated, so that the Mat-point screw blank 1 is contained in the upper die 10 and the lower die 20 and is subjected to punch forming. The upper mold core 12, the insert mold core 2212, the first mold core 2212, and the second mold core 2222b are made of tungsten steel.
The combined dies 222 are connected in a segmented manner, so that the first inner die 2221, the second inner die 2222, and the third inner die 2223 can be conveniently machined, and further, the machining accuracy of the second shaft forming hole 2221c, the second stepped rod part forming hole 2222c, the first ejector rod receiving hole 2222d, and the second ejector rod receiving hole 2223b can be enhanced. When the inner die 22 is damaged, only the damaged part needs to be replaced, so that the maintenance cost is saved.
The locking teeth 23 are sleeved on the third connecting part 2223e, and the outer diameter of the locking teeth 23 is larger than the diameter of the second mounting hole 213, so that the locking teeth 23 and the second mounting hole 213 are in interference fit, the position of the inner mold 22 in the lower mold shell 21 is limited by the locking teeth 23, and the locking teeth 23 are in the prior art.
The ejector rod 24 is accommodated in the first ejector rod accommodating hole 2222d and the second ejector rod accommodating hole 2223b, and the Mat-point screw blank 1 is ejected out through the ejector rod 24 when in use, which is a prior art and is not described herein again.
Compared with the prior art, the utility model provides a forming die of pole portion multi-step screw passes through go up mould 10 and lower mould 20 will Mat-point screw blank 1 punching press becomes pole portion multi-step screw. The upper die 10 processes and forms one end of the Mat-point screw blank 1 through the first step-shaped rod part forming hole 122 of the upper die core 12. The lower die 20 processes and forms the other end of the Mat-point screw blank 1 through the second step-shaped rod forming hole 2222 c. And the inner mold 22 of the lower mold 20 includes a sleeve 221 received in the first mounting hole 212, and a split mold 222 received in the second mounting hole 213. The combined die 222 is a multi-segment structure, and the combined die 222 sequentially includes a first inner die 2221, a second inner die 2222, and a third inner die 2223, so as to machine the second rod-forming hole 2221c in the first inner die 2221, machine the second stepped rod-forming hole 2222c and the first ejector rod-receiving hole 2222d in the second inner die 2222, and machine the second ejector rod-receiving hole 2223b in the third inner die 2223, thereby improving the machining accuracy of the second rod-forming hole 2221c, the second stepped rod-forming hole 2222c, the first ejector rod-receiving hole 2222d, and the second ejector rod-receiving hole 2223 b. According to the forming die for the rod part multi-step screw, the Mat-point screw blank 1 is formed in one step, so that the precision of the die is improved, the quality of a product is improved, the die is convenient to maintain, and the maintenance cost is reduced.
The above description is only for the preferred embodiment of the present invention and should not be construed as limiting the scope of the present invention, and any modification, equivalent replacement or improvement within the spirit of the present invention is encompassed by the claims of the present invention.
Claims (8)
1. The utility model provides a forming die of pole portion multi-step screw which characterized in that: the forming die for the rod multi-step screw comprises an upper die, a lower die, a punch rod and a cushion block, wherein the lower die is arranged at one end of the upper die and used for containing a Mat-point screw blank, the upper die comprises an upper die main body, an upper die core fixedly connected to one end of the upper die main body, the punch rod is inserted into the upper die main body, the cushion block is arranged in the upper die main body and abutted to one end of the punch rod, the upper die main body comprises a cushion block containing cavity and a punch rod containing cavity, the punch rod containing cavity is arranged at one end of the cushion block containing cavity and communicated with the upper die core, the upper die core comprises an upper die core main body and a first step rod part forming hole arranged on the upper die core main body, the punch rod containing cavity is communicated with the first step rod part forming hole, and the lower die comprises a lower die shell, the lower die shell comprises a lower die shell main body, a first mounting hole arranged on the lower die shell main body and a second mounting hole arranged at one end of the first mounting hole, the inner die comprises a sleeve sheet accommodated in the first mounting hole, and a combined die accommodated in the second mounting hole, the sleeve sheet comprises a sleeve sheet main body, a sleeve sheet die core arranged on the sleeve sheet main body and a first rod body forming hole arranged on the sleeve sheet die core, the combined die sequentially comprises a first inner die, a second inner die and a third inner die, the first inner die comprises a first inner die body and a first die core arranged on the first inner die body, a second rod body forming hole arranged on the first mold core, the second inner mold comprises a second inner mold body, a second mold core arranged on the second inner mold body, and a second step type rod part forming hole arranged on the second mold core, and a first ejector pin accommodating hole provided in the second mold core and at one end of the second stepped rod portion forming hole, the third inner mold including a third inner mold body, and a second ejector pin containing hole provided in the third inner mold body, the central axes of the first pin body forming hole, the second stepped pin part forming hole, the first ejector pin containing hole, and the second ejector pin containing hole being in the same straight line and being communicated with each other, so that the Mat-point screw blank is accommodated in the upper die and the lower die and is subjected to punch forming.
2. The mold for molding a multi-step screw having a shank according to claim 1, wherein: the first inner die body comprises a first inner die main body and a first connecting groove arranged at one end of the first inner die main body close to the second inner die.
3. The mold for molding a multi-step screw having a shank according to claim 2, wherein: the second inner die body comprises a second inner die main body, a first connecting piece and a second connecting groove, the first connecting piece is arranged at one end, close to the first inner die, of the second inner die main body, the second connecting groove is arranged at one end, close to the third inner die, of the second inner die main body, the diameter of the first connecting piece is smaller than that of the second inner die main body, and the first connecting piece is contained in the first connecting groove.
4. The mold for molding a multi-step screw having a shank according to claim 3, wherein: the third inner die body comprises a third inner die main body, a second connecting piece and a third connecting piece, the second connecting piece is arranged at one end, close to the second inner die, of the third inner die main body, the third connecting piece is arranged at one end, back to the second inner die, of the third inner die main body, the diameters of the second connecting piece and the third connecting piece are smaller than the diameter of the third inner die main body, and the second connecting piece is contained in a second connecting groove.
5. The mold for molding a multi-step screw having a shank according to claim 4, wherein: the locking teeth are sleeved on the third connecting piece, and the outer diameter of each locking tooth is larger than the diameter of the corresponding second mounting hole.
6. The mold for molding a multi-step screw having a shank according to claim 1, wherein: the first mounting hole and the outer profile of the shim main body are tapered in a cross section along the central axis of the lower die.
7. The mold for molding a multi-step screw having a shank according to claim 1, wherein: the first rod body forming hole is a hexagonal hole.
8. The mold for molding a multi-step screw having a shank according to claim 1, wherein: the upper mold core, the nest plate mold core, the first mold core and the second mold core are all made of tungsten steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021051325.XU CN212495033U (en) | 2020-06-09 | 2020-06-09 | Forming die of screw with multiple steps on rod part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021051325.XU CN212495033U (en) | 2020-06-09 | 2020-06-09 | Forming die of screw with multiple steps on rod part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212495033U true CN212495033U (en) | 2021-02-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021051325.XU Active CN212495033U (en) | 2020-06-09 | 2020-06-09 | Forming die of screw with multiple steps on rod part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212495033U (en) |
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2020
- 2020-06-09 CN CN202021051325.XU patent/CN212495033U/en active Active
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