CN210475212U - Riveting die on bridge - Google Patents
Riveting die on bridge Download PDFInfo
- Publication number
- CN210475212U CN210475212U CN201920266928.2U CN201920266928U CN210475212U CN 210475212 U CN210475212 U CN 210475212U CN 201920266928 U CN201920266928 U CN 201920266928U CN 210475212 U CN210475212 U CN 210475212U
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- riveting
- die
- bridge
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- female die
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- 238000005452 bending Methods 0.000 claims abstract description 58
- 239000000463 material Substances 0.000 claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 239000000725 suspension Substances 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000007493 shaping process Methods 0.000 description 10
- 230000006872 improvement Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000005253 cladding Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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Abstract
The utility model discloses a riveting die on bridge, which comprises an upper die, a lower die and a feeding mechanism, wherein the feeding mechanism can realize intermittent feeding of a material belt, a first, a second, a three-fold bending punch and a riveting punch are arranged on the upper die at intervals along the feeding sequence of the material belt, a horizontally extending bridge structure is fixedly arranged in a forming concave die of the lower die, the bridge structure is in a suspension state along the tail end of the feeding direction of the material belt, a first, a second, a three-fold bending concave die and a riveting concave die which are communicated are sequentially formed between the outer side wall of the bridge structure and the inner side wall of the forming concave die along the feeding direction of the material belt, a product to be formed just can be coated outside the bridge structure, the first, the second and the three-fold bending punches can be correspondingly inserted in the first, the second and the three-fold bending concave dies respectively, a riveting head which can vertically lift on the bridge structure just can be inserted into a riveting hole of the product to be riveted to carry out riveting, the riveting punch of the upper die can drive the riveting punch to vertically, the production efficiency and the product precision of the product are improved.
Description
Technical Field
The utility model relates to a hardware mould, in particular to riveting mould on bridge.
Background
Hardware in process of production, all be earlier through the punching press, bend behind processes such as shaping, connect through the riveting tool to the product riveting, weld or connect through the connecting piece and form stable structure, this kind of production mode needs a large amount of manual operation, and production efficiency is low, consumes the manual work, the defective products still appears easily, high in production cost.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects, the utility model provides a riveting mould on bridge, this riveting mould on bridge can realize product punching press, bending shaping and riveting and connect, saves cost of labor and manufacturing cost, and production efficiency is high.
The utility model discloses a solve the technical scheme that its technical problem adopted and be: a riveting die on a bridge comprises an upper die, a lower die and a feeding mechanism, wherein the upper die can be vertically positioned right above the lower die in a lifting manner, the feeding mechanism can realize intermittent feeding of a material belt on the lower die, the upper die is provided with a first bending punch, a second bending punch, a third bending punch and a riveting punch which are arranged at intervals along the material belt feeding sequence, an inward concave forming female die is formed on the lower die, a horizontally extending bridge structure is arranged in the forming female die, the starting end of the bridge structure along the material belt feeding direction is fixedly connected with the forming female die, the tail end of the bridge structure along the material belt feeding direction is arranged in a suspension state, a first bending female die, a second bending female die, a third bending female die and a riveting female die which are communicated are sequentially formed between the outer side wall of the bridge structure and the inner side wall of the forming female die along the material belt feeding direction, and a product to be formed can be coated, the first bending punch, the second bending punch and the third bending punch can be correspondingly inserted into the first bending die, the second bending die and the third bending die respectively, the bridge structure is provided with a vertical riveting head capable of lifting, the riveting head can be just inserted into a riveting hole of a product to be riveted for riveting, and the riveting punch of the upper die can just drive the riveting head to move vertically.
As a further improvement of the utility model, the upper die is also provided with a preliminary buckling punch which is positioned between the third bending punch and the riveting punch, a preliminary buckling female die is also formed between the forming female die and the bridge structure of the lower die, the preliminary buckling female die is positioned between the third bending female die and the riveting female die, a preliminary buckling slider which is fed along the horizontal direction perpendicular to the feeding direction of the material strip is arranged in the preliminary buckling female die, a preliminary buckling elastic part is also arranged, the preliminary buckling elastic part provides the preliminary buckling slider with elastic retaining force moving towards the direction far away from the workpiece to be riveted, the lower end of the preliminary buckling punch on the upper die is contacted with the preliminary buckling slider through an inclined plane, one side wall of the preliminary buckling slider can tightly support the outer surface of the longitudinal side wall of the product to be riveted, a product limiting part is also fixedly arranged in the preliminary buckling female die, the product locating part can tightly support the surface of the side wall of the product which backs to the preliminary buckling sliding block.
As a further improvement, be equipped with linear slide in the preliminary lock die, linear slide is located to preliminary lock slider cover that can slide.
As a further improvement, preliminary lock slider orientation is treated riveting product one side and is formed the closed angle structure that thickness reduces gradually, and this closed angle structure is convex structure with the edge of product contact, and this edge just with treat the riveting product vertical side wall root in close contact with of bending.
As a further improvement, the structural riveting slider and the elastic component that can longitudinally slide and set for the distance that are equipped with of bridge, the elastic component provides the elasticity holding power of upward movement for the riveting slider, and riveting head fixed mounting is on the riveting slider downside.
As a further improvement, the riveting die is fixed respectively in the mould and is equipped with preceding spacing insert, back spacing insert, left spacing insert and right spacing insert, preceding, back, left and right spacing insert just the backstop on treating riveting product lateral wall all around.
As the utility model discloses a further improvement, preceding, back spacing is inserted and is extended the setting along material area feed direction, and left and right spacing is inserted and is extended the setting along perpendicular material area feed direction, preceding, back spacing is inserted and is equipped with the direction inclined plane on the initiating terminal along material area feed direction, controls spacing insert and is located shaping die bottom surface, treats that the riveting product can withdraw from about along with the riveting slider spacing top of inserting.
As the utility model discloses a further improvement, still be equipped with prepressing mechanism on the riveting slider, prepressing mechanism includes ejector pin and elastomer, and the ejector pin can vertically slide to set for inserting of distance and locate in the riveting slider, and the ejector pin lower extreme can stretch out the riveting slider lower extreme outside, and the elastomer provides the elasticity holding power that stretches out the riveting slider outside for the ejector pin, and the ejector pin lower extreme can tightly support the riveting face surface of treating the riveting product.
As a further improvement, still be equipped with the guide post on the riveting slider, be equipped with the guiding hole that matches with the guide post on the shaping die bottom surface of lower mould, the guide post can be inserted and locate in the guiding hole.
As a further improvement, the structural T shape slide that is formed with of bridge, riveting slider are T shape structure, and riveting slider can be gliding insert locate the structural T shape slide of bridge in, the structural spacing post that still is equipped with horizontal bulge of bridge, is formed with along longitudinal extension's rectangular shape hole on the riveting slider, spacing post can be relative gliding insert locate rectangular shape downthehole.
The utility model has the advantages that: the utility model discloses a set up the shaping die in five metals stamping die, set up the bridge structure in the shaping die, realize the frame structure of product and bend the shaping and move and carry out riveting connection in the mould, avoided artifical follow-up riveting work, save artifically, improved the production efficiency of product, reduced manufacturing cost, improved product production precision.
Drawings
FIG. 1 is a perspective view of the product of the present invention;
fig. 2 is a front view of the material belt of the present invention;
fig. 3 is a top view of the material belt of the present invention;
fig. 4 is a right side view of the material belt of the present invention;
fig. 5 is a perspective view of the present invention;
fig. 6 is a front view of the present invention;
fig. 7 is a right side view of the present invention;
fig. 8 is a first three-dimensional structure diagram of the forming structure of the present invention;
fig. 9 is a second three-dimensional structure diagram of the molding structure of the present invention;
FIG. 10 is a front view of the forming structure of the present invention;
fig. 11 is a top view of the forming structure of the present invention;
fig. 12 is a perspective view of the bridge structure of the present invention;
fig. 13 is a schematic view of bending and forming of the present invention;
FIG. 14 is a perspective view of the primary snap-fit structure of the present invention;
fig. 15 is a schematic view of the riveting structure of the present invention;
FIG. 16 is a schematic diagram of the left and right limiting structures of the riveting process of the present invention;
FIG. 17 is a schematic view of the front and rear limiting structures of the riveting process of the present invention;
FIG. 18 is a schematic view of a pre-pressing and riveting pilot structure of the present invention;
fig. 19 is a perspective view of the riveting structure of the present invention.
Detailed Description
Example (b): a riveting die on a bridge comprises an upper die, a lower die and a feeding mechanism, wherein the upper die can be vertically positioned above the lower die in a lifting manner, the feeding mechanism can realize intermittent feeding of a material belt 34 on the lower die, the upper die is provided with a first bending punch 10, a second bending punch 11, a third bending punch 12 and a riveting punch 13 which are arranged at intervals along the feeding sequence of the material belt 34, an inward concave forming female die 14 is formed on the lower die, a horizontally extending bridge structure 15 is arranged in the forming female die 14, the starting end of the bridge structure 15 along the feeding direction of the material belt 34 is fixedly connected with the forming female die 14, the tail end of the bridge structure 15 along the feeding direction of the material belt 34 is arranged in a suspension state, and a first bending female die, a second bending female die, a third bending female die and a riveting female die which are communicated are sequentially formed between the outer side wall of the bridge structure 15 and the inner side wall of the forming female die, waiting that the shaping product just can cladding in the bridge structure 15 outside, first drift 10, the second drift 11 and the third drift 12 of bending can be correspondingly inserted respectively and locate first die, the second die and the third die of bending, be equipped with vertically can the lift riveting head (16) on the bridge structure 15, this riveting head just can insert the downthehole riveting of waiting to rivet product (17) and carry out the riveting, and the riveting drift 13 of going up the mould just can drive the vertical motion of riveting head.
Wherein the upper die comprises an upper die base 1, an upper padding plate 2, an upper clamping plate 3, a stripping back plate 4 and a stripping plate 5, the lower die comprises a foot pad 6, a lower die base 7, a lower padding plate 8 and a lower die plate 9, a planar long strip-shaped structure is formed by three times of bending through a first bending punch 10, a second bending punch 11 and a third bending punch 12, the lower side surface of the square frame-shaped structure is in an overlapped state, hole sites for riveting and stretching tapping structures are correspondingly formed on two horizontal walls in the overlapped state respectively, the stretching tapping structures are just inserted into the hole sites in the bending process, finally, a riveting punch 13 drives a riveting head to rivet and connect the stretching tapping structures with the hole sites, so that the square frame-shaped structure is fixedly connected to form an integrated structure, the bending can be performed in each bending process through a bending step-by-step mode, if the horizontal walls are bent into inclined walls firstly, then continue to bend and form the vertical wall again, every lateral wall is through bending the shaping many times like this, be favorable to improving the precision of bending, when bending, set up on bridge structure 15 with wait to bend the product and bend the bulge structure 35 of fillet corresponding in the interior angle, the assurance of interior angle when realizing the product and bending, through avoiding bridge structure 15 lateral walls to influence the product and bend and target in place, this mould can realize in step in the product stamping forming mould bending and riveting shaping, follow-up work has been avoided, product production efficiency is greatly improved, production cost and cost of labor have been reduced, product production quality has been improved.
The upper die is further provided with a primary buckling punch 18, the primary buckling punch 18 is positioned between a third bending punch 12 and a riveting punch 13, a primary buckling female die is further formed between a forming female die 14 and a bridge structure 15 of the lower die, the primary buckling female die is positioned between the third bending female die and the riveting female die, a primary buckling slider 19 which feeds along a horizontal direction perpendicular to the feeding direction of the material belt 34 is arranged in the primary buckling female die, a primary buckling elastic part is further arranged, the primary buckling elastic part provides elastic retaining force for the primary buckling slider 19 to move towards a direction far away from a workpiece to be riveted, the lower end of the primary buckling punch 18 on the upper die is in inclined surface contact with the primary buckling slider 19, one side wall of the primary buckling slider 19 can tightly abut against the outer side surface of the longitudinal side wall of a product to be riveted, and a product limiting part 36 is further fixedly arranged in the primary buckling female die, the product stop 36 can be pressed against the surface of the product sidewall facing away from the primary snap slider 19. The preliminary gully punch is matched with the preliminary buckling sliding block 19 to drive the preliminary buckling sliding block 19 to slide to press the root part of the longitudinal side wall which is bent to form a frame-shaped structure, so that the stretching and tooth drawing structure on a product to be riveted is aligned with the hole position, the stretching and tooth drawing structure is ensured to be inserted into the hole position, preliminary buckling connection is realized, the stretching and tooth drawing structure is prevented from being misaligned with the hole position during riveting, and the subsequent riveting strength is ensured.
The primary buckling female die is internally provided with a linear slide rail 20, and the primary buckling sliding block 19 can be sleeved on the linear guide rail in a sliding manner. The linear slide rail 20 is used for ensuring the motion precision of the primary buckling sliding block 19.
The preliminary buckling slider 19 forms a sharp-angled structure with gradually reduced thickness towards one side of the product to be riveted, the edge of the sharp-angled structure contacting with the product is in a circular arc-shaped structure, and the edge is just in close contact with the bent root of the longitudinal side wall of the product to be riveted.
The bridge structure 15 is provided with a riveting sliding block 21 and an elastic part 22 which can longitudinally slide for a set distance, the elastic part 22 provides an elastic retaining force for the riveting sliding block 21 to move upwards, and the riveting head is fixedly arranged on the lower side surface of the riveting sliding block 21. The riveting sliding block 21 is pressed downwards through the riveting punch head to overcome the elasticity of the elastic piece 22, so that the riveting sliding block 21 descends, the riveting head is driven to descend to be riveted, after riveting is completed, the upper die ascends, and the riveting head automatically breaks away from a product under the action of the elasticity of the elastic piece 22, and interference is avoided when the material belt 34 moves in a feeding mode.
The riveting die is internally and respectively and fixedly provided with a front limiting insert 23, a rear limiting insert 24, a left limiting insert 25 and a right limiting insert 26, and the front, rear, left and right limiting inserts 26 are just stopped on the peripheral side walls of a product to be riveted. The front, rear, left and right limiting inserts 26 are installed in the lower template, are positioned by using the template frame opening, are in contact with the product at a side gap of a single side plus 0.01, play a role in limiting the front, rear, left and right positions of the product, and prevent the front, rear, left and right inclination of the product from influencing.
The front limiting insert 24 and the rear limiting insert 24 extend along the feeding direction of the material belt 34, the left limiting insert 26 and the right limiting insert 26 extend along the direction perpendicular to the feeding direction of the material belt 34, guide inclined planes are arranged at the starting ends of the front limiting insert 24 and the rear limiting insert 24 along the feeding direction of the material belt 34, the left limiting insert 26 and the right limiting insert 26 are located on the bottom surface of the forming female die 14, and a product to be riveted can exit to the upper portions of the left limiting insert 26 and the right limiting insert 26 along with the riveting. The structure can realize that the workpiece enters the position limiting insert 26 to limit front, back, left and right, and meanwhile, the product after riveting can smoothly leave, and the structure is simple and the limiting precision is high.
The riveting slide block 21 is further provided with a prepressing mechanism, the prepressing mechanism comprises an ejector rod 27 and an elastic body 28, the ejector rod 27 can be inserted into the riveting slide block 21 in a longitudinally sliding mode for a set distance, the lower end of the ejector rod 27 can extend out of the outer side of the lower end of the riveting slide block 21, the elastic body 28 provides elastic retaining force for the ejector rod 27 to extend out of the outer side of the riveting slide block 21, and the lower end of the ejector rod 27 can tightly abut against the surface of a riveting surface of a product to be riveted. During installation, a through hole can be formed in the riveting sliding block 21, a stop screw 29 is arranged at the top end of the through hole to form a blind hole structure, the elastic body 28 can be a spring, the spring and the ejector rod 27 are arranged in the through hole, one end of the spring is connected with the ejector rod 27, the other end of the spring is connected with the stop screw, and the structure enables the sprouting side of a product to be automatically guided into the round hole side under the action of the spring force.
The riveting slider 21 is further provided with a guide post 30, the bottom surface of the forming female die 14 of the lower die is provided with a guide hole 31 matched with the guide post 30, and the guide post 30 can be inserted into the guide hole 31. The optimum cylinder that is two CNC processing of guide post 30, the riveting bottom surface sets up inserts, the parallel cut guiding hole 31, directly mill two cylindrical guide posts 30 on riveting slider 21 through CNC, guide post 30 and riveting slider 21 up-and-down motion simultaneously, realize riveting slider 21 longitudinal movement riveted direction with the cooperation of guiding hole 31, this structure treats the riveting both sides to the product and leads, the riveting in-process, it is spacing to carry out the internal orifice, prevent that the material from entering the internal orifice side, guarantee the quality of proving the riveting, prevent to rivet partially.
The riveting device is characterized in that a T-shaped slide way is formed on the bridge structure 15, the riveting slide block 21 is of a T-shaped structure, the riveting slide block 21 can be inserted into the T-shaped slide way on the bridge structure 15 in a sliding mode, a horizontally raised limiting column 32 is further arranged on the bridge structure 15, a long strip-shaped hole 33 extending along the longitudinal direction is formed in the riveting slide block 21, and the limiting column 32 can be inserted into the long strip-shaped hole 33 in a relative sliding mode. Through the cooperation of the riveting sliding block 21 adopting the T-shaped slide way and the T shape, the front side, the rear side, the left side and the right side of the riveting sliding block 21 are limited and positioned, and the up-and-down limitation and positioning of the riveting sliding block 21 are realized through the adoption of the strip-shaped hole 33 on the bridge and the limiting column 32 on the riveting sliding block 21.
Claims (10)
1. The utility model provides a riveting mould on bridge which characterized in that: the device comprises an upper die, a lower die and a feeding mechanism, wherein the upper die can be vertically positioned right above the lower die in a lifting manner, the feeding mechanism can realize intermittent feeding and feeding of a material belt on the lower die, a first bending punch head (10), a second bending punch head (11), a third bending punch head (12) and a riveting punch head (13) are arranged on the upper die at intervals along the material belt feeding sequence, an inward concave forming female die (14) is formed on the lower die, a horizontally extending bridge structure (15) is arranged in the forming female die, the bridge structure is fixedly connected with the forming female die along the initial end of the material belt (34) feeding direction, the bridge structure is arranged in a suspension state along the tail end of the material belt feeding direction, a first bending female die, a second bending female die, a third bending female die and a riveting female die which are communicated with one another are sequentially formed between the outer side wall of the bridge structure and the inner side wall of the forming female die along the material, the first bending punch, the second bending punch and the third bending punch can be correspondingly inserted into the first bending female die, the second bending female die and the third bending female die respectively, a riveting head (16) capable of vertically lifting is arranged on the bridge structure, the riveting head can be inserted into a riveting hole of a product (17) to be riveted for riveting, and the riveting punch of the upper die can drive the riveting head to move longitudinally.
2. The bridge riveting die of claim 1, wherein: a preliminary buckling punch (18) is also arranged on the upper die, the preliminary buckling punch is positioned between the third bending punch and the riveting punch, a preliminary buckling female die is also formed between the forming female die of the lower die and the bridge structure, the preliminary buckling female die is positioned between the third bending female die and the riveting female die, a preliminary buckling sliding block (19) which feeds along the horizontal direction vertical to the feeding direction of the material belt is arranged in the preliminary buckling female die, and a preliminary buckling elastic part is also arranged, this preliminary lock elastomeric element provides the elasticity retentivity towards keeping away from treating the motion of riveting work piece direction for preliminary lock slider, goes up preliminary lock drift lower extreme on the mould and passes through the inclined plane contact with preliminary lock slider, and preliminary lock slider lateral wall can tightly support treat on the riveting product longitudinal side lateral wall outside surface, still fixed be equipped with a product locating part (36) in the preliminary lock die, the product locating part can tightly support on the product lateral wall surface of preliminary lock slider dorsad.
3. The bridge riveting die of claim 2, wherein: a linear slide rail (20) is arranged in the primary buckling female die, and the primary buckling sliding block can be sleeved on the linear guide rail in a sliding manner.
4. The bridge riveting die of claim 2, wherein: the preliminary buckling sliding block forms a sharp-angled structure with gradually reduced thickness towards one side of the product to be riveted, the edge of the sharp-angled structure, which is in contact with the product, is of a circular arc-shaped structure, and the edge is just in close contact with the bent root of the longitudinal side wall of the product to be riveted.
5. The bridge riveting die of claim 1, wherein: the bridge structure is provided with a riveting sliding block (21) and an elastic piece (22) which can longitudinally slide for a set distance, the elastic piece provides elastic retaining force for the riveting sliding block to move upwards, and the riveting head is fixedly arranged on the lower side face of the riveting sliding block.
6. The bridge riveting die of claim 5, wherein: the riveting die is internally and respectively and fixedly provided with a front limiting insert (23), a rear limiting insert (24), a left limiting insert (25) and a right limiting insert (26), and the front, rear, left and right limiting inserts are just stopped on the peripheral side walls of a product to be riveted.
7. The bridge riveting die of claim 6, wherein: the front limiting insert and the rear limiting insert are arranged in an extending mode along the material belt feeding direction, the left limiting insert and the right limiting insert are arranged in an extending mode perpendicular to the material belt feeding direction, guide inclined planes are arranged at the starting ends of the front limiting insert and the rear limiting insert along the material belt feeding direction, the left limiting insert and the right limiting insert are located on the bottom surface of the forming female die, and a product to be riveted can exit from the upper portion of the left limiting insert and the right limiting insert along with the riveting sliding block.
8. The bridge riveting die of claim 5, wherein: the riveting sliding block is also provided with a prepressing mechanism, the prepressing mechanism comprises an ejector rod (27) and an elastic body (28), the ejector rod can longitudinally slide for a set distance and is inserted into the riveting sliding block, the lower end of the ejector rod can extend out of the outer side of the lower end of the riveting sliding block, the elastic body provides elastic retaining force for the ejector rod, the elastic retaining force extends out of the outer side of the riveting sliding block, and the lower end of the ejector rod can tightly abut against the surface of a riveting surface of a product to be riveted.
9. The bridge riveting die of claim 5, wherein: the riveting die is characterized in that the riveting sliding block is also provided with a guide post (30), the bottom surface of the forming female die of the lower die is provided with a guide hole (31) matched with the guide post, and the guide post can be inserted into the guide hole.
10. The bridge riveting die of claim 5, wherein: the riveting sliding block is characterized in that a T-shaped slide way is formed in the bridge structure, the riveting sliding block is of a T-shaped structure, the riveting sliding block can be inserted into the T-shaped slide way on the bridge structure in a sliding mode, a horizontally protruding limiting column (32) is further arranged on the bridge structure, a long strip-shaped hole (33) extending along the longitudinal direction is formed in the riveting sliding block, and the limiting column can be inserted into the long strip-shaped hole in a relative sliding mode.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201920266928.2U CN210475212U (en) | 2019-03-04 | 2019-03-04 | Riveting die on bridge |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201920266928.2U CN210475212U (en) | 2019-03-04 | 2019-03-04 | Riveting die on bridge |
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CN210475212U true CN210475212U (en) | 2020-05-08 |
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CN201920266928.2U Expired - Fee Related CN210475212U (en) | 2019-03-04 | 2019-03-04 | Riveting die on bridge |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109967614A (en) * | 2019-03-04 | 2019-07-05 | 昆山金群力精密组件有限公司 | Riveting die on bridge |
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2019
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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CN109967614A (en) * | 2019-03-04 | 2019-07-05 | 昆山金群力精密组件有限公司 | Riveting die on bridge |
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Granted publication date: 20200508 |