CN209986120U - Cover shell rolling riveting equipment - Google Patents

Cover shell rolling riveting equipment Download PDF

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Publication number
CN209986120U
CN209986120U CN201920356914.XU CN201920356914U CN209986120U CN 209986120 U CN209986120 U CN 209986120U CN 201920356914 U CN201920356914 U CN 201920356914U CN 209986120 U CN209986120 U CN 209986120U
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China
Prior art keywords
riveting
cover shell
nuts
roller
fixing jig
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CN201920356914.XU
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Chinese (zh)
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汪浩
钟奋书
曾毅飞
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Dongguan Yi Yi Hardware Mould Co Ltd
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Dongguan Yi Yi Hardware Mould Co Ltd
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Abstract

The utility model discloses a cover plate cover shell roll riveting device, which comprises a frame, an adjusting inclined block, a fixed inclined block, a riveting roller, a product fixing jig, a fixed plate, a movable plate, a separation and combination driving assembly, a linear driving device, a mounting seat, a limit switch, a starting switch and a controller; the second workpiece is placed on the first workpiece, the riveting opening in the second workpiece is aligned with the riveting convex point in the first workpiece and clamped, the linear driving device pushes the product fixing jig to move towards the riveting roller, the upper end of the riveting convex point is riveted through the riveting convex line on the outer peripheral surface of the riveting roller, the upper end of the riveting convex point is pressed, deformed and expanded to be tightly riveted on the riveting opening, the riveting effect is good, in addition, the riveting roller is correspondingly adjusted to the required rolling riveting working height by controlling the two adjusting inclined blocks to do relative action by interference or separate action, the flexibility is high, the consistency of the riveting effect can be ensured, the operation is simple and convenient, and the working efficiency is high.

Description

Cover shell rolling riveting equipment
Technical Field
The utility model relates to a roll and rivet technical field, concretely relates to cover shell rolls and rivets equipment.
Background
RBC is the abbreviation for Rllo-Bond-Card, herein called the "inflation plate". One side of RBC is equipped with the pipeline that bloatees, and the inside filling medium of pipeline to promote heat dispersion.
In some application fields, the RBC heat dissipation plate and the shutter cover plate need to be riveted, and the traditional process comprises the following steps: flatly placing and positioning the RBC heat dissipation plate on the workbench, then placing the shutter cover plate on the RBC heat dissipation plate for superposition, and enabling the riveting salient points on the RBC heat dissipation plate to penetrate out of the riveting openings on the cover plate; then, an operator holds the hammer to beat the riveting convex point, so that the upper end of the riveting convex point is pressed, deformed, expanded and riveted on the riveting opening, and the purpose of fixed connection is achieved. The riveting convex points are more in number, so that hands are required to knock one by one during batch production and assembly, the working efficiency is low, the labor intensity is high, the fatigue of people is easily caused, and in addition, the knocking force is totally controlled and judged by individuals subjectively, so that the consistency of riveting effects is difficult to ensure.
SUMMERY OF THE UTILITY MODEL
Not enough to the aforesaid, the utility model aims to provide a structural design is ingenious, reasonable, easy operation, and riveting effect's lid shell rolls rivets equipment.
In order to achieve the above purpose, the utility model provides a technical scheme is: a cover shell roll riveting device comprises a rack, an adjusting inclined block, a fixing inclined block, a riveting roller, a product fixing jig, a fixing plate, a movable plate, a separation and combination driving assembly, a linear driving device, a mounting seat, a limit switch, a starting switch and a controller, wherein the product fixing jig is movably arranged on a working table surface of the rack, and the linear driving device is arranged on the rack and can drive the product fixing jig to linearly reciprocate on the working table surface of the rack; two groups of support columns are arranged on a working table surface of the rack corresponding to two sides of the movement track of the product fixing jig, the fixed plate is arranged at the upper ends of the two groups of support columns, the movable plate is movably arranged in the middle of the two groups of support columns through the guide sleeve, the fixed inclined block is arranged at the bottom surface of the fixed plate, and lower inclined planes are symmetrically arranged on two sides of the lower part of the fixed inclined block; the mounting seat is arranged on the movable plate, pressing seats extending downwards are arranged on two sides of the mounting seat, two ends of the riveting roller are movably arranged on the pressing seats corresponding to the riveting roller respectively, the two adjusting inclined blocks correspond to the two lower inclined surfaces of the fixed inclined blocks and are movably arranged on the top surface of the mounting seat through linear sliding rails, upper inclined surfaces matched with the corresponding lower inclined surfaces of the two adjusting inclined blocks are arranged on the two adjusting inclined blocks, the opening and closing driving assembly is arranged on the movable plate and can drive the two adjusting inclined blocks to do relative action of leaning on or separating from each other, the motion track of the limit switch corresponding to the product fixing jig is arranged on the rack, and the controller is connected with the linear driving device, the limit switch and the starting switch respectively.
As an improvement of the utility model, deciliter drive assembly includes adjusting hand wheel, two-way screw rod and two and the nut of this two-way screw rod looks adaptation, and two nut correspondences set up on two regulation sloping blocks, two-way screw rod passes through the bearing frame setting on the fly leaf, and cooperatees with two nuts, adjusting hand wheel sets up the one end at two-way screw rod.
As an improvement of the utility model, deciliter drive assembly includes driving motor, two-way screw rod and two nuts with this two-way screw rod looks adaptation, and two nut correspondences set up on two regulation sloping blocks, two-way screw rod passes through the bearing frame setting on the fly leaf, and cooperatees with two nuts, driving motor sets up at the fly leaf, and can drive two-way screw rod is rotatory.
As an improvement of the utility model, deciliter drive assembly includes that the biax stretches motor and two nuts, and two nut correspondences set up on two regulation sloping blocks, and the biax is stretched and is equipped with the first screw thread that revolves to with nut looks adaptation on the first output shaft of motor, be equipped with on the second output shaft with another nut looks adaptation, and revolve to revolving to the screw thread to the first second that revolves to the opposite screw thread.
As an improvement of the utility model, the linear driving device is an oil cylinder, an air cylinder or a linear motor.
As an improvement of the utility model, the utility model also comprises a push plate, guide shafts and a support, wherein the two guide shafts are symmetrically and movably arranged at the two sides of the support through guide sleeves respectively, the back surface of the push plate is connected with the two guide shafts, and the front surface of the push plate is connected with a product fixing jig; the linear driving device is arranged in the middle of the support, and a driving part of the linear driving device is connected to the middle of the back of the push plate.
As an improvement of the utility model, it still includes strutting arrangement, and this strutting arrangement sets up on the mount pad and can the roof pressure be in on the riveting gyro wheel.
As an improvement of the utility model, strutting arrangement includes briquetting, spring and bolt, the bottom surface of mount pad is equipped with the flexible cavity of confession briquetting, and the briquetting is located the cavity, the lower terminal surface of this briquetting be equipped with the arc pressure face of riveting gyro wheel looks adaptation, the bolt runs through the mount pad and is connected with the briquetting, the spring housing is established on the bolt, and the upper end roof pressure is on the inner wall of cavity, and the lower extreme roof pressure is on the briquetting.
As an improvement of the utility model, strutting arrangement includes briquetting and bolt, the bottom surface of mount pad is equipped with the cavity, and the briquetting passes through the bolt fastening on the cavity, the lower terminal surface of this briquetting be equipped with the arc pressure surface of riveting gyro wheel looks adaptation.
The utility model has the advantages that: the utility model discloses a structural design is ingenious, reasonable, fixes a position work piece one on the fixed tool of product, places work piece two on work piece one to make the riveting opening on the work piece two align well and the card is gone into with the riveting bump on the work piece one, then linear drive device promotes the fixed tool of product and removes to riveting gyro wheel direction, carries out the riveting through the riveting sand grip on the riveting gyro wheel outer peripheral face to the upper end of riveting bump, makes the upper end of this riveting bump stressed deformation extension tightly the riveting is in on the riveting opening, and the cooperation is inseparable, and the riveting is effectual, does in addition to just corresponding adjustment riveting gyro wheel to required roll riveting work height and locking by disturbing or separately moving through controlling two regulation sloping blocks relatively, and the flexibility is high, also can ensure the uniformity of riveting effect simultaneously, easy operation, convenience, work efficiency is high.
The present invention will be further explained with reference to the drawings and the embodiments.
Drawings
Fig. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a schematic top view of the present invention.
Fig. 3 is a schematic side view of the present invention.
Fig. 4 is a partially enlarged structural view of a-a of fig. 2.
Detailed Description
Referring to fig. 1 to 4, the cover shell roll riveting device provided in this embodiment includes a frame 1, an adjusting inclined block 2, a fixed inclined block 3, a riveting roller 4, a product fixing jig 5, a fixed plate 6, a movable plate 7, a separation and combination driving assembly 8, a linear driving device 9, a mounting seat 10, a limit switch 11, a starting switch 12, and a controller 13. The controller 13 is respectively connected with the linear driving device 9, the limit switch 11 and the starting switch 12. Preferably, an emergency stop switch 14 connected to the controller 13 is also included, and the operator can cut off the power supply by quickly pressing the button to stop the operation of protecting people or things in case of emergency.
The product fixing jig 5 is movably arranged on the working table surface of the rack 1, and the linear driving device 9 is arranged on the rack 1 and can drive the product fixing jig 5 to do linear reciprocating motion on the working table surface of the rack 1; in this embodiment, the linear driving device 9 is preferably an oil cylinder, and in other embodiments, the linear driving device 9 may also be an air cylinder or a linear motor.
Preferably, in order to improve the working stability of the linear driving device 9, the cover shell roll riveting device of the present invention further comprises a push plate 15, guide shafts 16 and a support 17, wherein the two guide shafts 16 are symmetrically and movably arranged on two sides of the support 17 through guide sleeves respectively, the back surface of the push plate 15 is connected with the two guide shafts 16, and the front surface of the push plate 15 is connected with the product fixing jig 5; the linear driving device 9 is installed at the middle of the support 17, and the driving part of the linear driving device 9 is connected to the middle position of the back of the push plate 15.
Two groups of supporting columns 18 are arranged on the working table surface of the frame 1 corresponding to the two sides of the movement track of the product fixing jig 5, the fixed plate 6 is arranged at the upper ends of the two groups of supporting columns 18, the movable plate 7 is movably arranged in the middle of the two groups of supporting columns 18 through guide sleeves, the fixed inclined block 3 is arranged at the bottom surface of the fixed plate 6, and lower inclined planes are symmetrically arranged on the two sides of the lower part of the fixed inclined block 3; the mounting seat 10 is arranged on the movable plate 7, the two sides of the mounting seat 10 are provided with pressing seats 19 extending downwards, two ends of the riveting roller 4 are respectively movably arranged on the pressing seats 19 corresponding to the two ends, and the two lower inclined surfaces of the two adjusting inclined blocks 2 corresponding to the fixed inclined blocks 3 are movably arranged on the top surface of the mounting seat 10 through linear sliding rails. The fixed oblique block 3 can be composed of two small right-angled triangular blocks or a large isosceles triangular block. The large isosceles triangle here is relative to the volume of the two small right-angled triangles.
The two adjusting oblique blocks 2 are provided with upper oblique surfaces matched with the corresponding lower oblique surfaces, in order to improve the matching effect of the lower oblique surfaces and the upper oblique surfaces, the upper oblique surfaces are provided with sliding strips with round cross sections, the lower oblique surfaces are provided with O-shaped grooves matched with the sliding strips, and the sliding strips are clamped into the O-shaped grooves, so that the matching stability of the upper oblique surfaces and the lower oblique surfaces is effectively improved. A sliding strip with a T-shaped cross section can be arranged on the upper inclined plane, a T-shaped groove matched with the sliding strip is arranged on the lower inclined plane, and the sliding strip is clamped into the T-shaped groove. Preferably, the inclination angle a of the upper inclined plane is preferably 30 degrees, and the inclination angle of the lower inclined plane is preferably 60 degrees.
The separation and combination driving assembly 8 is arranged on the movable plate 7 and can drive the two adjusting inclined blocks 2 to do relative interference or separate actions, specifically, the separation and combination driving assembly 8 comprises an adjusting hand wheel 81, a bidirectional screw 82 and two nuts 83 matched with the bidirectional screw 82, the two nuts 83 are correspondingly arranged on the two adjusting inclined blocks 2, the bidirectional screw 82 is arranged on the movable plate 7 through a bearing seat and matched with the two nuts 83, and the adjusting hand wheel 81 is arranged at one end of the bidirectional screw 82. The operator rotates the adjusting handwheel 81 to correspondingly drive the bidirectional screw 82 to rotate, so as to drive the two adjusting inclined blocks 2 to do relative interference or separation action.
For promoting automation, the opening and closing driving component 8 comprises a driving motor, a two-way screw and two nuts matched with the two-way screw, the two nuts are correspondingly arranged on the two adjusting inclined blocks 2, the two-way screw is arranged on the movable plate 7 through a bearing seat and matched with the two nuts, the driving motor is arranged on the movable plate 7 and drives the two-way screw to rotate through belt transmission or gear transmission. The controller 13 controls the driving motor to rotate forward and backward, so that the bidirectional screw rod can be driven to rotate, and the two adjusting inclined blocks 2 are driven to move relatively to lean against or separate from each other.
Of course, the separation and combination driving assembly 8 may also adopt other structures capable of driving the two adjusting swash blocks 2 to relatively operate by interference or separate, for example, the separation and combination driving assembly 8 includes a dual-shaft extension motor and two nuts, the two nuts are correspondingly arranged on the two adjusting swash blocks 2, a first rotating direction thread adapted to the nut is arranged on a first output shaft of the dual-shaft extension motor, a second rotating direction thread adapted to another nut is arranged on a second output shaft, and the rotating direction of the second rotating direction thread is opposite to the first rotating direction thread. Or the clutch driving component 8 can be directly a bidirectional cylinder. Two piston rods of the bidirectional cylinder are respectively connected with the two adjusting inclined blocks 2, and the two adjusting inclined blocks 2 are driven to move relatively to lean against or separate from each other by the extension and retraction of the two piston rods of the bidirectional cylinder.
The limit switch 11 is arranged on the machine frame 1 corresponding to the movement track of the product fixing jig 5. The position of the limit switch 11 can be determined according to the riveting position of the RBC heat dissipation plate on the product fixing jig 5, specifically, after the riveting convex point at the last position is completely riveted, the position where the product fixing jig 5 is located is just the installation position of the limit switch 11, thus, after the riveting process is completed, the product fixing jig 5 just triggers the limit switch 11, the limit switch 11 feeds back a signal to the controller 13, and the controller 13 controls the linear driving device 9 to pull the product fixing jig 5 to return to the initial position, so that the riveting product can be conveniently taken down.
Preferably, the utility model discloses the cover shell rolls rivets equipment still includes strutting arrangement 19, and this strutting arrangement 19 sets up on mount pad 10 and can the roof pressure be in on the riveting gyro wheel 4. When the riveting roller 4 rivets the riveting salient points, the supporting device 19 provides supporting force for the riveting roller 4 to prevent the riveting roller from upwardly arching and deforming. Specifically, the supporting device 19 includes a pressing block 191, a spring 192 and a bolt 193, a concave cavity for the pressing block 191 to stretch is formed in the bottom surface of the mounting seat 10, the pressing block 191 is located in the concave cavity, an arc-shaped pressing surface matched with the riveting roller 4 is formed in the lower end surface of the pressing block 191, the bolt 193 penetrates through the mounting seat 10 to be connected with the pressing block 191, the spring 192 is sleeved on the bolt 193, the upper end of the spring abuts against the inner wall of the concave cavity, and the lower end of the spring abuts against the pressing block 191. In other embodiments, the spring 192 may be replaced by an elastic rubber sleeve. In addition, the supporting device 19 may also adopt other structures, for example, the supporting device 19 includes a pressing block and a bolt, the bottom surface of the mounting seat 10 is provided with a concave cavity, the pressing block is fixed on the concave cavity through the bolt, and the lower end surface of the pressing block is provided with an arc-shaped pressing surface matched with the riveting roller 4. When in work, the arc pressing surface is contacted with the riveting rolling wheel 4.
In this embodiment, the RBC heat sink plate and the cover plate are riveted, that is, the first workpiece is the RBC heat sink plate, and the second workpiece is the cover plate. The blind holes are formed in the cover plate, so that the heat dissipation effect is effectively improved.
During operation, the utility model discloses working method as follows:
(1) according to the riveting effect, an operator rotates the adjusting hand wheel 81 to correspondingly drive the bidirectional screw rod to rotate, so that the two adjusting inclined blocks 2 are driven to move in a leaning or separating manner relatively, the heights of the two adjusting inclined blocks 2 in the vertical direction are correspondingly adjusted through the matching of the upper inclined planes of the two adjusting inclined blocks 2 and the lower inclined planes of the fixed inclined blocks 3, and then the riveting roller 4 is driven to move up and down, so that the riveting roller 4 is adjusted to the required rolling riveting working height; and after the riveting roller 4 is adjusted to the required rolling riveting working height, the bidirectional screw is locked, so that the circumferential rotation of the bidirectional screw is avoided. The locking handle 84 can be used for locking, and the purpose of locking can be realized by radially screwing in and pressing on the bidirectional screw; after the rolling riveting height is adjusted to the required rolling riveting working height, the riveting pressure applied to all the riveting salient points is ensured to be uniform, so that the consistency of riveting effect is ensured, and the product quality is ensured;
(2) placing the cover plate on the RBC heat dissipation plate, and aligning and clamping the riveting opening on the cover plate with the riveting convex point on the RBC heat dissipation plate;
(3) pre-riveting one or more riveting salient points to form a semi-finished product; specifically, the riveting convex points can be knocked by hands or a mechanical hand hammer, and two or three riveting convex points can be knocked generally, so that the cover plate and the RBC heat dissipation plate can be positioned relatively to form a semi-finished product, the displacement phenomenon in the carrying process is avoided, and the riveting accuracy is ensured;
(4) moving the semi-finished product to a product fixing jig 5;
(5) pressing the starting switch 12, controlling the linear driving device 9 to push the product fixing jig 5 to move towards the riveting roller 4 by the controller 13, and riveting convex strips corresponding to the riveting convex points are arranged on the outer peripheral surface of the riveting roller 4; meanwhile, when the riveting roller 4 rivets the riveting salient points, the support device 19 provides support force for the riveting roller 4 to prevent the riveting roller from upwardly arching and deforming;
(6) after the riveting process is completed on the riveting salient point located at the last position, the limit switch 11 feeds back a signal to the controller 13, the controller 13 controls the linear driving device 9 to pull the product fixing jig 5 to return to the initial position so as to conveniently take down the riveting product, and after the riveting process is completed, the RBC heat dissipation plate and the cover plate are riveted and fixed to obtain the riveting product;
(7) the linear driving device pulls the product fixing jig to return to the initial position, and the riveted product is taken down, so that the operation is simple and convenient, and the working efficiency is high.
Variations and modifications to the above-described embodiments may occur to those skilled in the art, in light of the above teachings and teachings. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. In addition, although specific terms are used in the specification, the terms are used for convenience of description and do not limit the present invention, and other devices obtained by using the same or similar structures as those of the above-described embodiments of the present invention are within the protection scope of the present invention.

Claims (9)

1. The utility model provides a cover shell rolls rivets equipment which characterized in that: the riveting device comprises a rack, an adjusting inclined block, a fixing inclined block, a riveting roller, a product fixing jig, a fixing plate, a movable plate, a separation and combination driving assembly, a linear driving device, a mounting seat, a limit switch, a starting switch and a controller, wherein the product fixing jig is movably arranged on a working table surface of the rack, and the linear driving device is arranged on the rack and can drive the product fixing jig to do linear reciprocating motion on the working table surface of the rack; two groups of support columns are arranged on a working table surface of the rack corresponding to two sides of the movement track of the product fixing jig, the fixed plate is arranged at the upper ends of the two groups of support columns, the movable plate is movably arranged in the middle of the two groups of support columns through the guide sleeve, the fixed inclined block is arranged at the bottom surface of the fixed plate, and lower inclined planes are symmetrically arranged on two sides of the lower part of the fixed inclined block; the mounting seat is arranged on the movable plate, pressing seats extending downwards are arranged on two sides of the mounting seat, two ends of the riveting roller are movably arranged on the pressing seats corresponding to the riveting roller respectively, the two adjusting inclined blocks correspond to the two lower inclined surfaces of the fixed inclined blocks and are movably arranged on the top surface of the mounting seat through linear sliding rails, upper inclined surfaces matched with the corresponding lower inclined surfaces of the two adjusting inclined blocks are arranged on the two adjusting inclined blocks, the opening and closing driving assembly is arranged on the movable plate and can drive the two adjusting inclined blocks to do relative action of leaning on or separating from each other, the motion track of the limit switch corresponding to the product fixing jig is arranged on the rack, and the controller is connected with the linear driving device, the limit switch and the starting switch respectively.
2. The cover shell roll riveting device according to claim 1, wherein the separation and combination driving assembly comprises an adjusting hand wheel, a bidirectional screw rod and two nuts matched with the bidirectional screw rod, the two nuts are correspondingly arranged on the two adjusting inclined blocks, the bidirectional screw rod is arranged on the movable plate through a bearing seat and matched with the two nuts, and the adjusting hand wheel is arranged at one end of the bidirectional screw rod.
3. The cover shell roll riveting device according to claim 1, wherein the separation and combination driving assembly comprises a driving motor, a two-way screw and two nuts matched with the two-way screw, the two nuts are correspondingly arranged on the two adjusting inclined blocks, the two-way screw is arranged on the movable plate through a bearing seat and matched with the two nuts, and the driving motor is arranged on the movable plate and can drive the two-way screw to rotate.
4. The cover shell roll riveting device according to claim 1, wherein the separation and combination driving assembly comprises a double-shaft extension motor and two nuts, the two nuts are correspondingly arranged on the two adjusting inclined blocks, a first rotating direction thread matched with the nuts is arranged on a first output shaft of the double-shaft extension motor, and a second rotating direction thread matched with the other nut and having a rotating direction opposite to the first rotating direction thread is arranged on a second output shaft of the double-shaft extension motor.
5. The cover shell roll riveting apparatus according to claim 1, wherein the linear driving device is an oil cylinder, an air cylinder or a linear motor.
6. The cover shell roll riveting equipment according to claim 1 or 5, characterized by further comprising a push plate, guide shafts and a support, wherein the two guide shafts are symmetrically and movably arranged on two sides of the support through guide sleeves respectively, the back surface of the push plate is connected with the two guide shafts, and the front surface of the push plate is connected with a product fixing jig; the linear driving device is arranged in the middle of the support, and a driving part of the linear driving device is connected to the middle of the back of the push plate.
7. The cover shell roll riveting apparatus according to claim 1, further comprising a support device disposed on the mounting base and capable of pressing against the riveting roller.
8. The cover shell roll riveting device according to claim 7, wherein the supporting device comprises a pressing block, a spring and a bolt, a concave cavity for the pressing block to stretch is formed in the bottom surface of the mounting seat, the pressing block is located in the concave cavity, an arc-shaped pressing surface matched with the riveting roller is formed in the lower end surface of the pressing block, the bolt penetrates through the mounting seat and is connected with the pressing block, the spring is sleeved on the bolt, the upper end of the spring abuts against the inner wall of the concave cavity, and the lower end of the spring abuts against the pressing block.
9. The cover shell roll riveting device according to claim 7, wherein the supporting device comprises a pressing block and a bolt, a concave cavity is formed in the bottom surface of the mounting seat, the pressing block is fixed on the concave cavity through the bolt, and an arc-shaped pressing surface matched with the riveting roller is formed in the lower end surface of the pressing block.
CN201920356914.XU 2019-03-20 2019-03-20 Cover shell rolling riveting equipment Active CN209986120U (en)

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Application Number Priority Date Filing Date Title
CN201920356914.XU CN209986120U (en) 2019-03-20 2019-03-20 Cover shell rolling riveting equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920356914.XU CN209986120U (en) 2019-03-20 2019-03-20 Cover shell rolling riveting equipment

Publications (1)

Publication Number Publication Date
CN209986120U true CN209986120U (en) 2020-01-24

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Application Number Title Priority Date Filing Date
CN201920356914.XU Active CN209986120U (en) 2019-03-20 2019-03-20 Cover shell rolling riveting equipment

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110026490A (en) * 2019-03-20 2019-07-19 东莞市毅帆五金模具有限公司 Cover board roll riveting method and its roll riveting device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110026490A (en) * 2019-03-20 2019-07-19 东莞市毅帆五金模具有限公司 Cover board roll riveting method and its roll riveting device

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