CN216369864U

CN216369864U - Device for pressing hoop screw of CPU bracket

Info

Publication number: CN216369864U
Application number: CN202123232218.4U
Authority: CN
Inventors: 卢凯; 卢玄烨; 彭松; 高寿兵; 田锋利
Original assignee: Chongqing Jingshangtong Electronic Technology Co ltd
Current assignee: Chongqing Jingshangtong Electronic Technology Co ltd
Priority date: 2021-12-21
Filing date: 2021-12-21
Publication date: 2022-04-26
Anticipated expiration: 2031-12-21

Abstract

The utility model discloses a device for clamping screws by a CPU (Central processing Unit) bracket, which comprises a workbench (1), wherein a bottom plate (15) and four screw machines (3) are arranged on the workbench (1), a fixed frame (11) is arranged on one side of the workbench (1), a horizontally extending discharging frame (31) is arranged at the discharging position of each screw machine (3), a placing block (4) is arranged on the workbench (1) at the discharging position corresponding to the discharging frame (31), a yielding device is arranged on one side of the placing block (4), a punch (12) is arranged on the fixed frame (11), and an ejector rod (131) is arranged at the lower end of the workbench (1). The utility model is provided with the guide groove, the mounting groove, the stop groove, the punch, the ejector rod and the abdicating device, realizes the processing of the pressing hoop riveting screw on the premise of meeting the requirement of automatically feeding the screw, reduces the processing period and improves the production efficiency.

Description

Device for pressing hoop screw of CPU bracket

Technical Field

The utility model relates to the field of computer accessory manufacturing, in particular to a device for pressing hoop screws of a CPU bracket.

Background

The assembly direction of computer accessories requires accuracy, particularly the assembly and positioning of CPU parts are important, and the installation of the CPU needs to be fixed by corresponding brackets, so that the assembly and positioning accuracy of the brackets is more important, and the installation interference of other components cannot be caused by the fixed positions of the brackets and the case and the positions of the CPU fixed on the brackets; the existing CPU support is mainly produced by a single-piece independent hoop pressing screw which is a connecting screw with a threaded hole, and the two working procedures are respectively and independently processed, so that the positions of combined screws are more, the processing period is longer, and the production efficiency is lower.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a device for pressing hoop screws of a CPU bracket, which can automatically feed screws at a plurality of positions and can simultaneously press hoop screws at a plurality of positions.

The technical scheme of the utility model is as follows:

a device for pressing a hoop screw of a CPU bracket comprises a workbench, wherein a bottom plate is arranged on the workbench, four screw machines are arranged on the workbench, a fixed frame is arranged on one side of the workbench, a horizontally extending discharging frame is arranged at the discharging position of each screw machine, a placing block is arranged on the workbench corresponding to the discharging position of the discharging frame, a placing groove in sleeve joint with one side of the discharging frame is arranged on the placing block, a guide groove communicated with the placing groove is also arranged on the placing block, a first air cylinder is arranged on one side of the guide groove, an air nozzle is arranged on the other side of the guide groove, a push rod is arranged at the output end of the first air cylinder, the push rod horizontally extends into the guide groove, a mounting groove communicated with the guide groove is arranged at the position of the bottom plate corresponding to the air nozzle, a abdicating device is arranged at the discharging end of the mounting groove in communication, and a stopping groove is arranged on the abdicating device, a punch connected with a third cylinder is arranged at a position on the fixed frame corresponding to the stop groove, and a mandril connected with a second cylinder is arranged at a position on the lower end of the workbench corresponding to the stop groove; the bottom plate is connected with a positioning pin in a threaded mode, and the first cylinder, the second cylinder and the third cylinder are all connected with the PLC.

By adopting the structure, the positioning holes are preset on the processed and formed material belt, the positioning holes are sleeved on the positioning pins of the screw connection by manually moving the material belt, the PLC is started and the screw machine is started, the screws are moved to the corresponding positions in the guide groove one by one in sequence, the PLC starts the first air cylinder, the screw is moved to the position of the air nozzle by the push rod, the air pump connected with the air nozzle is started by the PLC, the screws are blown into the mounting groove by high-pressure airflow, the push rod moves back, the air nozzle continues to blow the screws to move to the position right above the mounting position through the abdication groove, the next screw enters the corresponding position in the guide groove for standby, at the moment, the PLC starts the second air cylinder to drive the push rod to move upwards and prop against the screws, then, the third air cylinder is started and drives the punch to move downwards, the punch props against the corresponding position of the abdication device and props against the upper end surface of the screws, at the moment, the screw is separated from the corresponding position of the abdicating device, the upper end and the lower end of the screw are simultaneously abutted by the punch and the ejector rod, the second cylinder is started to move back, namely the punch and the ejector rod clamp the screw to move down together at the same speed, the lower end surface of the screw is abutted with the riveting position corresponding to the upper end surface of the material belt, the ejector rod continues to move down, the punch continues to apply force to abut against the screw, the mounting of the screw for pressing and riveting the screw on the material belt is realized, after the mounting is in place, the third cylinder drives the punch to move up, and after the moving material belt reaches the position of the next part, the related steps are repeated, so that the assembly operation of pressing and riveting the screw can be continuously carried out.

In order to facilitate simultaneous processing of the hoop-pressing and riveting screws at a plurality of positions, preferably, four screw machines are arranged on the workbench, every two screw machines form a group, and the two screw machines in each group are symmetrically arranged leftwards and rightwards along the feeding direction.

For the convenience of the removal of screw, as preferred be equipped with in proper order along the propelling movement direction on the push rod and connect silo and air channel the position department that corresponds the air nozzle on the bottom plate is equipped with the guide block is equipped with the mounting groove, the mounting groove is including forming horizontal segment and the vertical section that the cross-section is "T" shape structure, mounting groove and guide groove intercommunication, the tank bottom that connects silo and air channel all flushes with the tank bottom of the vertical section of mounting groove.

In order to facilitate the removal screw, avoid processing to interfere simultaneously, as preferred, the device of stepping down includes two fixed blocks that the symmetry set up on the guide block, every all be connected with the pressure spring on the fixed block, the one end of pressure spring is connected with the installation piece, every all be equipped with a breach, two on the installation piece the breach surrounds and forms the groove of stepping down, and the position department that corresponds the breach on every this installation piece all is equipped with one section along the ejection of compact direction of screw and ends the groove, two end the groove symmetry set up and all communicate with the horizontal segment of mounting groove, and the lower extreme cell wall in two sections this end groove all flushes with the lower extreme cell wall of mounting groove horizontal segment.

In order to simplify the structure, preferably, a third cylinder is arranged on the fixed frame, a first connecting plate is arranged at the output end of the third cylinder, a punch vertically extending downwards is arranged at the position of the lower end face of the first connecting plate corresponding to the stop positions of the two stop grooves, and a yielding through hole is arranged at the position of the guide block corresponding to the punch; the lower extreme of workstation is equipped with the second cylinder of being connected fixedly with the workstation, the output of second cylinder is equipped with the second connecting plate the up end of second connecting plate is equipped with the vertical ejector pin that upwards stretches out to the position department that ends that corresponds two groove of ending the position department of corresponding the ejector pin is equipped with the through-hole on the workstation.

In order to simplify the structure and ensure that the screws move in place, preferably, one side of the upper ends of the two mounting blocks is provided with a section of transition inclined plane, the punch is provided with a conical inclined plane, the inclination of the conical inclined plane is matched with that of the transition inclined plane, and when the punch moves downwards, the conical inclined plane is abutted against the two transition inclined planes and simultaneously pushes the two mounting blocks to move and respectively extrude the pressure springs at the corresponding ends.

In order to facilitate observation of the moving state of the screw and prevent the screw from falling out, preferably, an opening is formed in the position, corresponding to the mounting groove, of the upper end face of the guide block, a cover plate is arranged at the opening, a positioning block is arranged on the cover plate, the positioning block stretches into the yielding groove, and the lower end face of the cover plate is abutted to the corresponding position of the upper end face of the guide block.

In order to avoid damaging the screw, the ejector rod is preferably provided with a section of conical rod with a small upper part and a large lower part.

Has the advantages that: the utility model is provided with the guide groove, the mounting groove, the stop groove, the punch, the ejector rod and the abdicating device, realizes the processing of the pressing hoop riveting screw on the premise of meeting the requirement of automatically feeding the screw, reduces the processing period and improves the production efficiency.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the lower die holder.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is a schematic view of an installation structure of the screw machine and the workbench.

Fig. 5 is an enlarged view of fig. 4 at B.

Fig. 6 is a schematic structural diagram of the abdicating device.

FIG. 7 is a schematic view of the mounting structure of the mounting groove and the stop groove.

FIG. 8 is a schematic structural diagram of a guide block and a abdicating device

Fig. 9 is a diagram showing a state of use of the punch and the carrier rod.

Detailed Description

The utility model will be further explained with reference to the drawings.

As shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8 and fig. 9, the present invention includes a working table 1, four screw machines 3 are provided on the working table 1, every two screw machines 3 are in one group, and the two screw machines 3 of each group are symmetrically provided left and right along a feeding direction; a fixed frame 11 is arranged on one side of the workbench 1, a horizontally extending discharging frame 31 is arranged at the discharging position of each screw machine 3, a placing block 4 is arranged at the discharging position of the corresponding discharging frame 31 on the workbench 1, a placing groove 41 which is sleeved with one side of the discharging frame 31 is arranged on the placing block 4, a guide groove 42 which is communicated with the placing groove 41 is also arranged on the placing block 4, a first air cylinder 43 is arranged on one side of the guide groove 42, an air nozzle 44 is arranged on the other side of the guide groove 42, a push rod 44 is arranged at the output end of the first air cylinder 43, and the push rod 44 horizontally extends into the guide groove 42; be equipped with in proper order along propelling movement direction on the push rod 44 and connect silo 441 and air channel 442 be equipped with bottom plate 15 on the workstation 1 the position department that corresponds air nozzle 46 on the bottom plate 15 is equipped with guide block 45 is equipped with mounting groove 451, mounting groove 451 is including forming horizontal segment and the vertical section that the cross-section is "T" shape structure, mounting groove 451 and guide way 42 intercommunication, the tank bottom that connects silo 441 and air channel 442 all flushes with the tank bottom of the vertical section of mounting groove 451.

The discharge end intercommunication of mounting groove 451 is equipped with the device of stepping down, the device of stepping down includes two fixed blocks 24 that the symmetry set up on guide block 45, every all be connected with pressure spring 241 on the fixed block 24, the one end of pressure spring 241 is connected with installation piece 242, every all be equipped with a breach, two on the installation piece 242 the breach surrounds and forms the groove of stepping down, and the discharge direction that corresponds the breach on every this installation piece 242 all is equipped with one section along the screw and ends groove 243, two end the groove 243 symmetry set up and all communicate with the horizontal segment of mounting groove 451, and two sections should end the lower extreme cell walls of groove 243 and all flush with the lower extreme cell wall of mounting groove 451 horizontal segment.

A third air cylinder 14 is arranged on the fixed frame 11, a first connecting plate 141 is arranged at the output end of the third air cylinder 14, a punch 12 which vertically extends downwards is arranged at the position of the lower end face of the first connecting plate 141 corresponding to the stop positions of the two stop grooves 243, and a yielding through hole is arranged at the position of the guide block 45 corresponding to the punch 12; the lower extreme of workstation 1 is equipped with and is connected fixed second cylinder 13 with workstation 1, the output of second cylinder 13 is equipped with second connecting plate 132 the up end of second connecting plate 132 corresponds the end position department of ending of two end position grooves 243 and is equipped with the vertical ejector pin 131 that upwards stretches out the position department that corresponds ejector pin 131 on workstation 1 is equipped with the through-hole, be equipped with one section big end down's toper pole on the ejector pin 131.

One side of the upper end of each of the two mounting blocks 242 is provided with a section of transition inclined surface, the punch 12 is provided with a conical inclined surface, the inclination of the conical inclined surface is matched with the inclination of the transition inclined surface, when the punch 12 moves downwards, the conical inclined surface abuts against the two transition inclined surfaces, and the two mounting blocks 242 are simultaneously pushed to move and respectively extrude the pressure springs 241 at the corresponding ends.

An opening is formed in the upper end face of the guide block 45 at a position corresponding to the mounting groove 451, a cover plate 452 is arranged at the opening, a positioning block 453 is arranged on the cover plate 452, the positioning block 453 extends into the observation groove, and the lower end face of the cover plate 452 is abutted to the corresponding position of the upper end face of the guide block 45.

The bottom plate 15 is screwed with a positioning pin 2, and the first cylinder 43, the second cylinder 13 and the third cylinder 14 are all connected with a PLC (not shown).

The using method of the utility model is as follows:

as shown in fig. 1 to 9, related processing parameters are set on the PLC controller, positioning holes (as shown in the material strip style in fig. 2) are preset on the formed material strip, positioning pins 2 are screwed on the bottom plate 15 at positions corresponding to the two positioning holes, the positioning holes on the material strip are sleeved on the positioning pins 2, when processing is performed, the material strip is manually moved to sleeve the positioning holes on the screwed positioning pins 2, the PLC controller is started and four screw machines are simultaneously started, the screws are sequentially moved into the receiving groove 441 of the push rod 44 one by the screw machines 3, the push rod 44 is located in the guide groove 42, the PLC controller starts the first cylinder 43, so the push rod 44 drives the screws to move in the guide groove 42, and moves the screws to the position of the air nozzle 46, the PLC controller starts the air pump connected with the air nozzle 46, and blows the screws into the mounting groove 451 by high-pressure air flow, then the push rod 44 moves back, the next screw enters the material receiving groove 441 again, at this time, the vent groove 442 is located at the position of the air nozzle 46, the high-pressure air flow is continuously blown into the installation groove 451 through the vent groove 442, and the screw is finally moved to the stop end position surrounded by the two stop grooves, namely, right above the installation position, in the process, the nut position of the screw is moved to the stop groove 243 along the horizontal section of the installation groove 451, and the vertical section of the screw is in a suspended state in the stop groove.

Then, the PLC controller starts the second cylinder 13 to drive the mandril 131 to move upwards to penetrate through the workbench 23 and push the lower end of the screw by the position of the conical rod, at the moment, the upper end groove wall of the stop groove 243 vertically abuts and limits the nut of the screw, the screw is not moved, then, the punch press is started and the upper die holder 1 is moved downwards, namely, the punch 12 is driven to move downwards, the conical inclined surface of the punch 12 abuts against the transitional inclined surface on the mounting block 242, the mounting block 242 is pushed to move to extrude the pressure spring 241, the relief groove is opened, the nut of the screw is separated from the stop groove 243 when the punch 12 is attached to the upper end surface of the screw and the nut, at the moment, the upper end and the lower end of the screw are simultaneously abutted against the punch 12 and the mandril 131, then the second cylinder 13 is started to move backwards, namely, the punch 12 and the mandril 131 clamp the screw together to move downwards at the same speed, the lower end surface of the screw is abutted against the riveting position corresponding to the upper end surface of the material belt, the mandril 131 continuously moves downwards and is separated from the screw, the drift 12 continues application of force butt screw, realize the installation of riveting tightly to the clamp of screw on the material area, finally, upper die base 1 drives drift 12 and moves up, installation piece 242 moves back under the elastic force effect of pressure spring 241, the groove of stepping down resumes the width when awaiting the ready, the processing of clamp screw is accomplished in four positions simultaneously, after the position of next part on the material area targets in place, repeat above-mentioned relevant step, can continuously carry out the assembly operation of clamp riveting screw, moreover, the steam generator is simple and compact in structure, the labor intensity is reduced, and the production efficiency is improved.

It should be noted that, because the handheld material strap is not long, the number of the processed parts is small, and on the premise of the positioning pin 2, the intensity of manual operation is not large and the processing safety can be ensured.

The apron 452 that sets up surrounds with mounting groove 451 simultaneously and forms a direction cavity structure in the open-ended position in mounting groove 451, except that can prevent that the screw from being blown out mounting groove 451 by high-pressure draught and the condition that drops, can also be when having the screw not blown in place, is convenient for take up apron 452 and inspects the reason, and simultaneously, locating piece 453 stretches into and lets the inslot place, is convenient for fix apron 452 in the horizontal direction.

The product in the embodiment needs to be riveted at four positions, so that the inspection is convenient, and the condition of processing omission can be well avoided; if position missing processing is found, after timely feeding, the corresponding screw machine 3 is independently started on the PLC to feed screws, and the corresponding second air cylinder 13 and the corresponding third air cylinder 14 are started to perform supplementary processing.

Claims

1. The utility model provides a device of CPU support clamp screw which characterized in that: comprises a workbench (1), a bottom plate (15) is arranged on the workbench (1), four screw machines (3) are arranged on the workbench (1), a fixing frame (11) is arranged on one side of the workbench (1), a discharge frame (31) horizontally extending is arranged at the discharge position of each screw machine (3), a placing block (4) is arranged on the workbench (1) corresponding to the discharge position of the discharge frame (31), a placing groove (41) sleeved with one side of the discharge frame (31) is arranged on the placing block (4), a guide groove (42) communicated with the placing groove (41) is further arranged on the placing block (4), a first air cylinder (43) is arranged on one side of the guide groove (42), an air nozzle (46) is arranged on the other side of the guide groove, a push rod (44) is arranged at the output end of the first air cylinder (43), and the push rod (44) horizontally extends into the guide groove (42), a mounting groove (451) communicated with the guide groove (42) is formed in the position, corresponding to the air nozzle (46), of the bottom plate (15), a yielding device is communicated with the discharge end of the mounting groove (451), a stopping groove (243) is formed in the yielding device, a punch (12) connected with a third air cylinder (14) is arranged in the position, corresponding to the stopping groove (243), of the fixing frame (11), and a push rod (131) connected with a second air cylinder (13) is arranged in the position, corresponding to the stopping groove (243), of the lower end of the workbench (1); the bottom plate (15) is connected with a positioning pin (2) in a threaded mode, and the first air cylinder (43), the second air cylinder (13) and the third air cylinder (14) are all connected with a PLC.

2. The device for clamping the screw of the CPU bracket according to claim 1, wherein: four screw machines (3) are arranged on the workbench (1), every two screw machines (3) are in a group, and the two screw machines (3) in each group are symmetrically arranged leftwards and rightwards along the feeding direction.

3. The device for clamping the screw of the CPU bracket according to claim 1, wherein: be equipped with in proper order along the propelling movement direction on push rod (44) and connect silo (441) and air channel (442) bottom plate (15) is last to correspond air nozzle (46) position department and is equipped with guide block (45) are equipped with mounting groove (451), mounting groove (451) are including forming horizontal segment and the vertical section that the cross-section is "T" shape structure, mounting groove (451) and guide groove (42) intercommunication, the tank bottom that connects silo (441) and air channel (442) all flushes with the tank bottom of the vertical section of mounting groove (451).

4. The device for clamping the screw of the CPU bracket according to claim 1, wherein: the device of stepping down includes two fixed blocks (24) that the symmetry set up on guide block (45), every all be connected with pressure spring (241) on fixed block (24), the one end of pressure spring (241) is connected with installation piece (242), every all be equipped with a breach on installation piece (242), two the breach surrounds and forms the groove of stepping down, and the position department that corresponds the breach on every this installation piece (242) all is equipped with one section along the ejection of compact direction of screw and ends groove (243), two end groove (243) symmetry set up and all communicate with the horizontal segment of mounting groove (451), and the lower extreme cell wall of two sections this groove of stopping (243) all flushes with the lower extreme cell wall of mounting groove (451) horizontal segment.

5. The device for clamping the screw of the CPU bracket according to claim 4, wherein: a third air cylinder (14) is arranged on the fixed frame (11), a first connecting plate (141) is arranged at the output end of the third air cylinder (14), a punch (12) which vertically extends downwards is arranged at the position of the lower end face of the first connecting plate (141) corresponding to the stop positions of the two stop grooves (243), and a yielding through hole is arranged at the position of the guide block (45) corresponding to the punch (12); the lower extreme of workstation (1) is equipped with and is connected fixed second cylinder (13) with workstation (1), the output of second cylinder (13) is equipped with second connecting plate (132) the up end of second connecting plate (132) corresponds the position department of ending of two groove of ending (243) and is equipped with vertical ejector pin (131) that upwards stretches out the position department of corresponding ejector pin (131) is equipped with the through-hole on workstation (1).

6. The device for clamping the screw of the CPU bracket according to claim 4, wherein: one side of the upper end of each of the two mounting blocks (242) is provided with a transition inclined surface, the punch head (12) is provided with a conical inclined surface, the inclination of the conical inclined surface is matched with that of the transition inclined surface, when the punch head (12) moves downwards, the conical inclined surfaces abut against the two transition inclined surfaces, and the two mounting blocks (242) are pushed to move simultaneously and respectively extrude the pressure springs (241) at the corresponding ends.

7. The device for clamping the screw of the CPU bracket according to claim 3, wherein: an opening is formed in the position, corresponding to the installation groove (451), of the upper end face of the guide block (45), a cover plate (452) is arranged at the opening, a positioning block (453) is arranged on the cover plate (452), the positioning block (453) extends into the observation groove, and the lower end face of the cover plate (452) is abutted to the corresponding position of the upper end face of the guide block (45).

8. The device for clamping the screw of the CPU bracket according to claim 1, wherein: the ejector rod (131) is provided with a section of conical rod with a small upper part and a large lower part.