CN108637159B - Special riveting die for pawl pin and wallboard for hand hoist - Google Patents
Special riveting die for pawl pin and wallboard for hand hoist Download PDFInfo
- Publication number
- CN108637159B CN108637159B CN201810535121.4A CN201810535121A CN108637159B CN 108637159 B CN108637159 B CN 108637159B CN 201810535121 A CN201810535121 A CN 201810535121A CN 108637159 B CN108637159 B CN 108637159B
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- 238000003825 pressing Methods 0.000 claims abstract description 61
- 238000001125 extrusion Methods 0.000 claims abstract description 15
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 230000006835 compression Effects 0.000 claims description 24
- 238000007906 compression Methods 0.000 claims description 24
- 238000012797 qualification Methods 0.000 abstract description 4
- 238000007723 die pressing method Methods 0.000 abstract 4
- 238000005056 compaction Methods 0.000 description 16
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/10—Riveting machines
- B21J15/14—Riveting machines specially adapted for riveting specific articles, e.g. brake lining machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J15/00—Riveting
- B21J15/38—Accessories for use in connection with riveting, e.g. pliers for upsetting; Hand tools for riveting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Insertion Pins And Rivets (AREA)
Abstract
The invention discloses a special riveting die for a pawl pin and a wallboard for a hand-operated block, and belongs to the technical field of hand-operated block part assembly. The die comprises a die pressing and riveting base, an elastic extrusion block, an auxiliary pressing plate fixed on the bottom end face of the elastic extrusion block, a core die base, a core die, a pressing nut and a pressing and positioning die with steps at the periphery, wherein the upper section of the die pressing and riveting base is fixed in a mounting hole of the die pressing and riveting base, the lower section of the die pressing and positioning die is hooped in a central through hole of the elastic extrusion block, the core die base is provided with a chassis part, a necking section axially extending from the top end face of the chassis part, a threaded section is formed on the outer peripheral face of the necking section, a cavity is formed in the necking section, the core die and the pressing and positioning die are sequentially placed in the cavity, the pressing nut is screwed on the necking section, and the pressing end ring part tightly abuts against the steps, so that the central through hole of the pressing and positioning die and the central through hole of the core die are jointly formed into a step hole for inserting and positioning a ratchet pin. The pawl pin after the die is used for riveting is not deformed and has high qualification rate.
Description
[ Field of technology ]
The invention relates to a special riveting die for a pawl pin and a wallboard for a hand-operated block, and belongs to the technical field of hand-operated block part assembly.
[ Background Art ]
The detent pin is a standard part of a known manual hoist, and the detent pin, the detent, the torsion spring and the shaft end check ring jointly form a detent assembly. The pawl pin consists of a middle section with the thickest shaft diameter for the torsion spring to be sleeved, a rivet pressing head end part axially extending from two ends of the middle section and respectively used for being riveted and installed in a wallboard through hole and a tail section for the pawl to be sleeved, a rivet pressing guide blind hole is formed in the rivet pressing head end part, a rivet pressing flanging fixedly connected with the wallboard is formed in the rivet pressing head end part after the rivet pressing guide blind hole is riveted, and two ends of the torsion spring are clamped in clamping holes respectively formed in the pawl and the wallboard.
In the prior art, the riveting technology of the detent pin and the wallboard has the following problems: the middle section is easy to deform, the assembly of the torsion spring is influenced, the tail section is also easy to deform, the assembly of the shaft end check ring and the pawl is influenced, the deformation of any section can lead to the defects of low product qualification rate and poor consistency of pawl parts, and the smooth assembly of the pawl assembly is finally influenced.
[ Invention ]
The invention aims to provide a special riveting die for a pawl pin and a wallboard for a manual hoist, which has reliable positioning of the pawl pin before riveting and no deformation of the pawl pin after riveting, and has high qualification rate.
Therefore, the invention provides the following technical scheme:
The utility model provides a special pressure riveting die of pawl round pin and wallboard for hand block, rivet the die holder including the bottom center is offered to the pressure of mounting hole, the bottom has the pressure of pressure riveting head, set up the elastic extrusion piece of center through-hole, set up the auxiliary pressure strip of center through-hole, arrange the mandrel base of auxiliary pressure strip below, set up the mandrel of center through-hole, the gland nut of end ring portion and set up the compression positioning die of center through-hole, the compression positioning die has the step at its periphery, the upper segment of riveting die is put into and is fixed in the mounting hole of riveting the die holder, and its lower segment is by the staple bolt in the center through-hole of elastic extrusion piece, the auxiliary pressure strip is fixed in on the bottom terminal surface of elastic extrusion piece, and the diameter of the central through-hole of auxiliary pressure strip and pressure riveting die its lower segment suits, the mandrel base has chassis portion, the screw thread section of its top axial extension of chassis portion, and the outer peripheral face of this necking down section has a shape and size, the holding die of holding down positioning die adaptation, hold down the mandrel, hold down and place in proper shaping cavity into this end ring in proper shape and pressing positioning die, hold down cavity in proper shape, holding down cavity, holding down end ring in proper shape, holding down end ring, and holding down end ring in proper shape, holding down end ring, and holding down end ring.
The center through holes of the pressing rivet head, the pressing positioning die and the core die are collinear.
The invention has the following advantages and positive effects:
Before the compaction riveting is prepared, a compaction nut screwed on the core die base performs compaction on the step of the compaction positioning die through the compaction end ring part, so that a gap between the compaction positioning die and the core die can be eliminated, and the compaction positioning die and the core die are jointly and reliably compacted and fixed in the cavity of the core die base without loosening and running; after the detent pin is inserted, the step hole formed by the central through hole of the pressing positioning die and the central through hole of the core die can reliably position the detent pin consistently, the riveting part of the detent pin is stably riveted on the wallboard in the whole riveting process, the part of the detent pin which is not riveted is not deformed disadvantageously due to riveting operation, and the detent pin before and after riveting has good dimensional consistency, high qualification rate of the detent pin and smooth assembly of torsion springs, pawls and shaft end check rings after the detent pin is riveted.
In addition, when the core mold with the center through hole of other specifications and the compression positioning mold with the center through hole of other specifications are required to be replaced, the core mold and the compression positioning mold with the required specifications are only required to be replaced after the compression nut is unscrewed, and the method is convenient and quick.
[ Description of the drawings ]
FIG. 1 is a schematic view of the structure of the present invention (click pins have been press fit into wallboard through holes);
FIG. 2 is a schematic view of the pawl pin in place of the wallboard in FIG. 1 in use;
FIG. 3 is a plan view of a wall plate of the lever block;
FIG. 4 is a schematic diagram of the lever block after the wallboard and the pawl pin are fixed by riveting;
FIG. 5 is a schematic view of the structure of the detent pin of the lever block;
FIG. 6 is a plan view of the wall panel of the chain block;
fig. 7 is a schematic diagram of the wall plate of the chain block after being riveted with the pawl pin.
[ Detailed description ] of the invention
Referring to fig. 1-7, the special riveting die for the pawl pin and wallboard for the hand hoist comprises a riveting die holder 1 with a mounting hole 10 at the center of the bottom, a riveting die 2 with a riveting head 21 at the bottom, an elastic extrusion block 3 with a central through hole 30, an auxiliary compaction plate 4 with a central through hole 40, a mandrel base 8 arranged below the auxiliary compaction plate 4, a mandrel 7 with a central through hole 70, a compaction nut 5 with a compaction end ring part 51 and a compaction positioning die 6 with a central through hole 60, wherein the compaction positioning die 6 is provided with a step 61 at the periphery, the upper section of the riveting die 2 is placed and fixed in the mounting hole 10 of the riveting die holder 1, the lower section of the riveting die is hooped in the central through hole 30 of the elastic extrusion block 3, the auxiliary compaction plate 4 is fixed on the bottom end face of the elastic extrusion block 3, the central through hole 40 of the auxiliary compaction plate is matched with the diameter of the lower section of the riveting die 2, the mandrel base 8 is provided with a chassis part 81, a necking neck part 82 axially extending from the top end face of the chassis part 81, the neck end ring part 82 is provided with a large end ring 5 for being connected with the outer circumferential surface of the neck end ring part and the mandrel 6, the neck ring part is tightly pressed by the step 6 is matched with the large thread part 6, the small end ring part 6 is screwed into the step 6, the step 6 is screwed into the step 6 is matched with the step 6, and the step 6 is screwed into the step 6 is positioned in the step 6, and is screwed into the step 6 is positioned in the step 6.
The upper section of the riveting die 2 is fixed through a jacking bolt S1 after being placed into the mounting hole 10; after the lower section of the anchor ear riveting die 2 of the elastic extrusion block 3, the top surface of the elastic extrusion block 3 is contacted with the bottom surface of the riveting die holder 1: the auxiliary pressing plate 4 is fixed on the bottom surface of the elastic pressing block 3 by a countersunk self-tapping screw S2.
The auxiliary pressing plate 4 is made of hard materials, the die holder 1 is made of hard materials, the pressing nut 5 is made of 40Cr steel, the elastic pressing block 3 is made of polyurethane, and the pressing die 2, the auxiliary pressing plate 4 and the core die 7 are made of Cr12 alloy steel.
The holding cavity is a cylindrical cavity, the flat top surface 62 of the compression positioning die 6 is used for holding the wallboard B, and the bottom surface of the wall board B which is held on the holding cavity is contacted with the flat top surface 62; the axis of the rivet head 21 is in the same straight line with the center line of the center through hole 60 of the pressing positioning die 6 and the center line of the center through hole 70 of the core die 7.
After the assembly of the core mold 7, the pressing positioning mold 6, the pressing nut 5 and the core mold base 8, and the assembly of the pressing riveting mold 2 and the pressing riveting mold base 1, the mold can be started to be mounted on a press machine with the existing structure, the top end of the pressing riveting mold base 1 is firstly fixed on the press machine, the axis of the pressing riveting head 21 is ensured to be in a same line with the central through hole 60 of the pressing positioning mold 6 and the central through hole 70 of the core mold 7 by means of a mold bar (known tool is not shown), finally, the chassis part 81 is horizontally pressed and fastened on a workbench of the press machine, and the elastic pressing block 3 is mounted and the auxiliary pressing plate 4 is fixed after the molding is finished. The press riveting die holder 1 is driven by a press machine, and can vertically move up and down during press riveting operation.
As shown in fig. 5, the pawl pin K is composed of a middle section K2, a press rivet head end K1 and a tail section K3 extending axially from two ends of the middle section K2, wherein the press rivet head end K1 is provided with a press rivet guiding blind hole K10.
The specific press mounting steps are as follows: firstly, a detent pin K is directly inserted into a central through hole 60 of a compression positioning die 6 and a central through hole 70 of a core die 7, wherein the end part K1 of a pressing rivet head is exposed out of the compression positioning die 6; then, placing the wallboard B on the compaction positioning die 6, aligning the wallboard through hole B0 with the rivet pressing end K1, starting the press after the preparation work is finished, driving the rivet pressing die holder 1 to move downwards, enabling the auxiliary pressing plate 4 to tightly abut against the wallboard B until the wallboard through hole B0 is pressed into the rivet pressing end K1 as shown in fig. 1, continuously moving downwards the rivet pressing die holder 1, enabling the elastic extrusion block 3 to deform in a compression mode, and enabling the rivet pressing head 21 of the central through hole 40 of the auxiliary pressing plate 4 to smoothly enter the rivet pressing guide blind hole K10 due to the fact that the rivet pressing head 2, the central through hole 60 and the central through hole 70 are collinear, and forming a rivet pressing flange K11 riveted with the wallboard B at the rivet pressing end K1 along with the stamping effect of the rivet pressing head 21.
The secondary riveting operation can be performed firstly and secondly to finish the riveting of the two detent pins and one wallboard, and the special die can ensure that the middle section and the tail section of the two detent pins are not deformed.
Fig. 3 and 5 are respectively a wallboard B and a pawl pin K used by the lever block, two wallboard through holes B0 are formed on the wallboard, the wallboard and the pawl pin of the lever block in fig. 4 are riveted, wherein a press riveting flanging K11 is formed at the end part of the press riveting head of the pawl pin; fig. 6 is a wall board B for a chain block, wherein two wall board through holes B0 are formed in the wall board, and in fig. 7, the wall board of the chain block and a pawl pin K are riveted, wherein a press riveting flanging K11 is formed at the end part of a press riveting head of the pawl pin; the pawl pin of the lever block is only different in specification and completely identical in structure, and the wallboard through hole of the lever block is round with the wallboard through hole of the lever block, so that the apertures are slightly different.
After the wallboard and the pawl pin for the lever block are riveted, the wallboard and the pawl pin for the lever block are required to be riveted, and the compression positioning die and the core die matched with the central through hole are required to be replaced at the moment, and only the compression nut is required to be unscrewed upwards rapidly, so that the new compression positioning die and core die are replaced, and the special die has the characteristics of convenience and quickness in replacing the compression positioning die and the core die.
Claims (1)
1. The utility model provides a special pressure of pawl round pin and wallboard is riveted mould for hand hoist which characterized in that: comprises a press riveting die holder with a mounting hole at the center of the bottom, a press riveting die with a press riveting head at the bottom, an elastic extrusion block with a central through hole, an auxiliary pressing plate with a central through hole, a mandrel base arranged below the auxiliary pressing plate, a mandrel with a central through hole, a pressing nut with a pressing end ring part and a pressing positioning die with a central through hole, wherein the periphery of the pressing positioning die is provided with a step, the upper section of the press riveting die is placed in and fixed in the mounting hole of the press riveting die holder, the lower section of the press riveting die is hooped in the central through hole of the elastic extrusion block, the auxiliary pressing plate is fixed on the bottom end surface of the elastic extrusion block, the central through hole of the auxiliary pressing plate is matched with the diameter of the lower section of the press riveting die,
The core mold base is provided with a base plate part and a necking section axially extending from the top end surface of the base plate part, the outer peripheral surface of the necking section is provided with a threaded section for the threaded connection of a compression nut, the inside of the necking section is provided with a cavity with a shape and a size matched with the core mold and the compression positioning mold, the core mold and the compression positioning mold are sequentially placed in the cavity, the compression positioning mold is superposed on the core mold,
The compression nut is screwed on the necking section, the compression end ring part is tightly abutted against the step, so that the central through hole of the compression positioning die and the central through hole of the core die are formed into a step hole for inserting and positioning the detent pin, the compression rivet head, the central through hole of the compression positioning die and the central through hole of the core die are in a common straight line, the flat top surface of the compression positioning die is higher than the top surface of the compression end ring part,
The detent pin comprises a middle section, a pressing rivet head end part and a tail section, wherein the pressing rivet head end part axially extends from two ends of the middle section, a pressing rivet guide blind hole is formed in the pressing rivet head end part, the pressing rivet head end part is exposed out of the pressing positioning die, and the middle section and the tail section are inserted into and positioned in the step hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810535121.4A CN108637159B (en) | 2018-05-27 | 2018-05-27 | Special riveting die for pawl pin and wallboard for hand hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810535121.4A CN108637159B (en) | 2018-05-27 | 2018-05-27 | Special riveting die for pawl pin and wallboard for hand hoist |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108637159A CN108637159A (en) | 2018-10-12 |
| CN108637159B true CN108637159B (en) | 2024-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810535121.4A Active CN108637159B (en) | 2018-05-27 | 2018-05-27 | Special riveting die for pawl pin and wallboard for hand hoist |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108637159B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111195686B (en) * | 2019-12-28 | 2021-07-13 | 河北成华机械制造有限公司 | Riveting method of inner plate of lever block wrench and brake cover |
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| CN201625759U (en) * | 2009-12-21 | 2010-11-10 | 深南电路有限公司 | Knife stamping holder of riveting machine |
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| CN208288917U (en) * | 2018-05-27 | 2018-12-28 | 浙江双鸟机械有限公司 | The dedicated riveting die of bottle gouard moved by hands detent pin and wallboard |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6279371B1 (en) * | 2000-04-24 | 2001-08-28 | Robert Brewer | Hand-held riveting tool |
| CN101745598B (en) * | 2008-12-18 | 2013-01-16 | 珠海格力电器股份有限公司 | Rivet press mold and automatic rivet press equipment with the same |
| CN201644700U (en) * | 2010-04-27 | 2010-11-24 | 长沙胜通汽配科技发展有限公司 | One-time forming and riveting device for steel plate spring clamp |
| DE102015109244A1 (en) * | 2015-06-11 | 2016-12-15 | Profil Verbindungstechnik Gmbh & Co. Kg | Method for fastening a rivet element and corresponding fastening system therefor |
| CN106217863A (en) * | 2016-08-26 | 2016-12-14 | 中航工业哈尔滨轴承有限公司 | A kind of copper rivet bearing flexible riveting tool and technique |
| CN205996097U (en) * | 2016-08-31 | 2017-03-08 | 四川长虹技佳精工有限公司 | Press frock |
| CN107186069B (en) * | 2017-05-31 | 2020-01-21 | 张家港幸运金属工艺品有限公司 | Flower cover expansion type film |
| CN207043263U (en) * | 2017-06-13 | 2018-02-27 | 苏州和自兴智能科技有限公司 | It is a kind of full-automatic to press and take off riveting device |
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2018
- 2018-05-27 CN CN201810535121.4A patent/CN108637159B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201625759U (en) * | 2009-12-21 | 2010-11-10 | 深南电路有限公司 | Knife stamping holder of riveting machine |
| CN203711642U (en) * | 2014-03-05 | 2014-07-16 | 连云港泰诚钢结构有限公司 | Punch die device |
| CN206912075U (en) * | 2017-07-27 | 2018-01-23 | 航天科工哈尔滨风华有限公司 | A kind of mould for the riveting molding that pressed for metal thin-wall Sheet Metal Part matrix |
| CN208288917U (en) * | 2018-05-27 | 2018-12-28 | 浙江双鸟机械有限公司 | The dedicated riveting die of bottle gouard moved by hands detent pin and wallboard |
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| Publication number | Publication date |
|---|---|
| CN108637159A (en) | 2018-10-12 |
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