WO2020238104A1

WO2020238104A1 - Riveting gun and riveting connection method

Info

Publication number: WO2020238104A1
Application number: PCT/CN2019/121369
Authority: WO
Inventors: 曹璨; 姚峰
Original assignee: 苏州斯旺西机电有限公司
Priority date: 2019-05-29
Filing date: 2019-11-27
Publication date: 2020-12-03
Also published as: CN110038994A

Abstract

Disclosed is a riveting gun (100), comprising a body (10), a punching mechanism (20), a driving mechanism (30) and a control switch (40), wherein the punching mechanism is connected to the body and comprises a machining head (210) and a machining die (202) which is used in cooperation with the machining head, the machining die is used for positioning a workpiece to be subjected to riveting connection, and the machining head is used for loading a rivet; the driving mechanism is arranged on the body and is connected to the machining head to drive the machining head to move relative to the machining die so as to punch the rivet into the workpiece; and the control switch is arranged on the body and is connected to the driving mechanism, and the control switch controls the driving mechanism to drive the machining head to pre-press the rivet before the driving mechanism is controlled to drive the machining head to punch the rivet into the workpiece. A riveting connection method using the riveting gun for riveting a workpiece is disclosed. According to the riveting gun, the control switch is used to pre-press the rivet before the rivet is subjected to riveting connection, such that the rivet can vertically penetrate the workpiece, thereby guaranteeing the riveting connection quality and fully fixing the workpiece.

Description

Nail gun and riveting method

Technical field

The invention relates to the technical field of connector threading, and in particular to a nail piercing gun and a riveting method for riveting workpieces using the nail piercing gun.

Background technique

The pressure riveting of sheet metal is mainly carried out by drilling with rivets. The traditional riveting method is mainly carried out by pressure riveting machinery. However, this type of pressure riveting machine is only suitable for pressure riveting of small plates. For large plates, a rivet gun is usually used for riveting.

However, during the process of implementing the traditional technology, the inventor found that the riveting gun in the traditional technology is easy to be riveted and inclined, so that the riveting quality is not high, and the metal plate cannot be sufficiently fixed.

Summary of the invention

Based on this, it is necessary to provide an improved nail piercing gun to solve the problem of the inclination of the riveting gun in the traditional technology.

A nail gun, including:

Ontology

A punching mechanism, connected to the body, including a processing head and a processing die used in cooperation with the processing head, the processing die is used for positioning the workpiece to be riveted, and the processing head is used for loading rivets;

A driving mechanism is provided on the body and connected with the processing head to drive the processing head to move relative to the processing die so that the rivets can penetrate the workpiece; and,

A control switch is provided in the body and connected to the drive mechanism. The control switch controls the drive mechanism to drive the drive mechanism before the processing head drives the rivet into the workpiece. The processing head pre-presses the rivet.

The above-mentioned nail piercing gun uses a control switch to pre-press the rivet before the rivet is riveted, so that the rivet can penetrate the work piece vertically, ensure the riveting quality, and fully fix the work piece.

In one of the embodiments, the control switch includes:

Inching mechanism, movably connected to the body, used to control the driving mechanism to work or stop working;

During preloading, the inching mechanism controls the driving mechanism to stop working when the rivet on the processing head is in contact with the workpiece;

After the pre-compression is completed, the inching mechanism controls the operation of the driving mechanism.

In one of the embodiments, a return spring is provided between the end of the body close to the processing head and the end of the driving mechanism away from the processing head;

The control switch also includes a transmission mechanism connected with the inching mechanism. When nails are inserted, the transmission mechanism is driven by the inching mechanism to prevent the processing head from resetting.

In one of the embodiments, the driving mechanism includes:

The first driving device is connected to the inching mechanism, and the inching mechanism controls the first driving device to work or stop working; and,

A second driving device is connected to the transmission mechanism, and the second driving device is driven by the first driving device and cooperates with the transmission mechanism to drive the processing head to move relative to the processing die.

In one of the embodiments, the first driving device includes a motor, and the motor is connected to the inching mechanism;

The second driving device includes a hydraulic driving mechanism that includes an oil pack, a piston cylinder connected to the oil pack, and a hydraulic control mechanism, and the hydraulic control mechanism is located in a piston rod in the cylinder barrel of the piston cylinder The processing head is mounted on the piston rod and the return spring is arranged on the end of the piston rod away from the processing head and the piston cylinder barrel close to the processing head. Between one end

Wherein, the hydraulic control mechanism includes an oil inlet valve, a piston push rod, and an oil return valve. The oil inlet valve communicates with the oil bag and the piston cylinder through an oil inlet passage, and the piston push rod and the motor The power output end is connected, the oil return valve communicates with the piston cylinder and the oil bag through an oil return passage, and the transmission mechanism is connected with the oil return valve to control the opening or closing of the oil return valve.

In one of the embodiments, the punching mechanism further includes a pliers body, the pliers body has a first part and a second part spaced apart, the first part is connected to the body, and the second part is installed with The processing mold is provided with punching holes.

In one of the embodiments, the processing mold is detachably mounted on the second part.

In one of the embodiments, the body is further provided with a hand-held part, the control switch is arranged in the hand-held part, the hand-held part includes a base, and a battery is installed in the base to provide the driving mechanism powered by.

The invention also provides a riveting method.

A riveting method, using the nail piercing gun as described above to riveting a workpiece, includes the steps:

Loading rivets into the processing head;

Placing the part to be riveted of the workpiece between the rivet and the processing die;

Using a control switch to control the driving mechanism to drive the processing head to pre-press the rivet, so that the rivet contacts the part to be riveted of the workpiece;

Using a control switch to control the driving mechanism to drive the processing head to punch the rivet, so that the rivet penetrates the part to be riveted of the workpiece;

Evacuate the workpiece.

In the above riveting method, by pre-pressing the rivet before the rivet is riveted, the rivet can be vertically penetrated into the workpiece, the riveting quality of the workpiece is improved, and the workpiece is fully fixed.

In one of the embodiments, in the step of using a control switch to control the driving mechanism to drive the processing head to pre-press the rivet, the control switch is when the end of the rivet away from the processing head is in contact with the workpiece Control the driving mechanism to stop working.

Description of the drawings

Figure 1 is a schematic structural diagram of a nail piercing gun according to an embodiment of the present invention;

Figure 2 is a structural diagram (with partial cross-section) of a stamping mechanism, a driving mechanism and a control switch according to an embodiment of the invention.

Detailed ways

In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is for a more thorough and comprehensive understanding of the disclosure of the present invention.

It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or a central element may also exist. When an element is considered to be "connected" to another element, it can be directly connected to the other element or an intermediate element may be present at the same time. The terms "vertical", "horizontal", "left", "right", "upper", "lower", "front", "rear", "circumferential" and similar expressions used herein are based on the attached The orientation or positional relationship shown in the figure is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a reference to the present invention. Limitations of the invention.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field of the present invention. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The term "and/or" as used herein includes any and all combinations of one or more related listed items.

Please refer to FIG. 1 and FIG. 2, the present invention provides a nail piercing gun 100, which can be used to better pierce rivets so that the workpiece can be fully fixed. The nail piercing gun 100 includes a main body 10, a punching mechanism 20 connected to the main body 10, and a driving mechanism 30 and a control switch 40 provided on the main body 10.

For the body 10, in order to facilitate the removal and movement of the nail piercing gun 100, the size of the body 10 should be appropriate, and the material strength of the body 10 is relatively high to withstand the vibration when the rivet is punched.

The punching mechanism 20 includes a processing head 201 and a processing die 202 used in conjunction with the processing head 201. The processing head 201 is facing the center of the processing die 202. The processing die 202 is used for positioning the workpiece to be riveted, and the processing head 201 is used for loading rivets. Specifically, a magnet is provided in the processing head 201 to absorb the rivet to be punched, and the size of the processing head 201 should be adapted to the size of the rivet to be punched; the processing die 202 is provided with punching holes to facilitate the pressing of rivets, and the punching holes The diameter of the hole can be appropriately larger than the diameter of the end of the rivet away from the processing head 201, so that the waste can be discharged from the punching hole.

The driving mechanism 30 is connected with the processing head 201 to drive the processing head 201 to move relative to the processing die 202. Preferably, the driving mechanism 30 with a relatively large driving force can be used to press the rivet into the workpiece after one punching action.

The control switch 40 is connected with the driving mechanism 30. The control switch 40 controls the driving mechanism 30 to drive the processing head 201 to pre-press the rivets before the driving mechanism 30 drives the processing head 201 to fill the rivets into the workpiece. Specifically, after the rivets are loaded on the processing head 201, the drive mechanism 30 has two working strokes under the action of the control switch 40. The control switch 40 controls the drive mechanism 30 to drive the processing head 201 to move in the direction close to the processing die 202. The first working stroke of the contact between the rivet and the workpiece. At the moment of contact, the control switch 40 controls the drive mechanism 30 to stop working. Preferably, after the end of the rivet away from the processing head smoothly abuts the workpiece, the control switch 40 controls the drive mechanism 30 stops working; after the pre-compression is completed, the control switch 40 controls the driving mechanism 30 to drive the processing head 201 to punch the rivet into the workpiece, which is the second working stroke of the driving mechanism 30.

In the nail piercing gun 100 of the present invention, the control switch 40 is used to preload the rivet before the rivet is riveted, so that the rivet can penetrate the workpiece vertically, and the riveting position is flat, ensuring the riveting quality, and thus the workpiece is fully fixed.

According to some embodiments of the present invention, as shown in FIG. 2, the control switch 40 includes an inching mechanism 401, and the inching mechanism 401 is movably connected to the main body 10 for controlling the driving mechanism 30 to work or stop working. During preloading, that is, during the first working stroke of the driving mechanism 30, the inching mechanism 401 controls the driving mechanism 30 to stop working when the rivet on the processing head 201 contacts the workpiece; after the preloading is completed, the inching mechanism 401 controls the drive Agency 30 works.

By providing the inching mechanism 401, the driving mechanism 30 can be controlled conveniently and quickly. Specifically, first, the inching mechanism 401 can be used to connect the working circuit of the driving mechanism 30 to drive the processing head 201 to move toward the processing die 202. When the rivet on the processing head 201 is in contact with the workpiece, the inching mechanism 401 disconnects the working circuit of the driving mechanism 30 to stop working. Preferably, the disconnection time can be appropriately delayed at the moment of contact, so that the end of the rivet away from the processing head is smoothly abutted with the workpiece, and then the jog is used again The mechanism 401 connects the working circuit of the driving mechanism 30, so that the driving mechanism 30 drives the processing head 201 to punch the rivet into the workpiece.

Further, referring to FIG. 2 continuously, a return spring 30233 is provided between the end of the body 10 close to the processing head 201 and the end of the driving mechanism 30 far away from the processing head 201. The control switch 40 also includes a transmission mechanism 402 connected to the inching mechanism 401, When nailing, the transmission mechanism 402 is driven by the inching mechanism 401 to prevent the processing head 201 from resetting.

By setting the return spring 30233, the processing head can be reset by the reaction force of spring compression after the nail penetration is completed. Therefore, in order to prevent the processing head 201 from resetting under the action of the return spring 30233 during nail penetration, the transmission connected to the inching mechanism 401 is used. The mechanism 402 is driven by the inching mechanism 401 to apply a force opposite to the spring force to the driving mechanism 30, thereby preventing the processing head 201 from resetting.

Further, the driving mechanism 30 includes a first driving device 301 connected to the inching mechanism 401, and a second driving device 302 connected to the transmission mechanism 402. The inching mechanism 401 controls the first driving device 301 to work or stop working, and the second The driving device 302 is driven by the first driving device 301 and cooperates with the transmission mechanism 402 to drive the processing head 201 to move relative to the processing die 202.

During preloading, the inching mechanism 401 is used to control the first driving device 301 to work, and at the same time to drive the second driving device 302 to work, and the transmission structure 402 makes the processing head move in the direction close to the processing die 202; the rivets on the processing head 201 and When the workpiece is in contact, the inching mechanism 401 is used to control the first driving device 301 to stop working. At this time, the transmission structure 402 is still driven by the inching mechanism 401 to prevent the processing head 201 from resetting and to ensure the preload; after the preload is completed, use the inching again The mechanism 401 controls the operation of the first driving device 301 and drives the second driving device 302 to punch the rivet into the workpiece. This arrangement can facilitate the operation of the driving mechanism 30 and improve the nail penetration efficiency.

Further, as shown in FIG. 2, the first driving device 301 includes a motor, and the motor is connected to the inching mechanism 401. Specifically, the inching mechanism 401 includes an inching switch and a plate rod connected to the inching switch. The switch is electrically connected. The second driving device 302 includes a hydraulic driving mechanism. The hydraulic driving mechanism includes an oil pack 3021, a piston cylinder 3023 communicating with the oil pack 3021, and a hydraulic control mechanism 3022. The hydraulic control mechanism 3022 is located in the piston rod 30232 and the oil in the piston cylinder cylinder 30231. Between the packages 3021, the processing head 201 is detachably mounted on the piston rod 30232, and the return spring 30233 is arranged between the end of the piston rod 30232 away from the processing head 201 and the end of the piston cylinder 30231 close to the processing head 201.

Specifically, the hydraulic control mechanism 3022 includes an oil inlet valve 30221, a piston push rod 30222, and an oil return valve 30223. The oil inlet valve 30221 communicates with the oil bag 3021 and the piston cylinder 3023 through the oil inlet channel; the piston push rod 30222 is connected to the power output end of the motor. More specifically, the power output end of the motor is provided with an eccentric wheel (not shown in the figure), The piston push rod 30222 is in contact with the periphery of the eccentric wheel and can move up and down under the action of the eccentric wheel. This can increase the oil pressure in the oil bag 3021, so that the oil in the oil bag 3021 flows through the oil inlet valve 30221 and the oil inlet channel. Into the piston cylinder 3023, so as to push the piston rod 30232 to move in the direction close to the processing die 202; the oil return valve 30223 connects the piston cylinder 3023 and the oil bag 3021 through the oil return passage, and the transmission mechanism 402 is connected with the oil return valve 30223 to control the return The oil valve 30223 is opened or closed.

Taking Figure 2 as an example, the transmission mechanism 402 includes a push rod connected to the plate rod of the inching mechanism 401. One end of the push rod is connected to the return valve valve through a rotating block. When the nail is inserted, the plate rod is gently moved , The push rod is driven to drive the rotating block to rotate, the valve of the oil return valve is lifted, and the oil return valve is closed. At this time, the inching switch has not been closed. You need to continue to press the plate lever to close the inching switch. To trigger the motor to work. During the pre-compression process, when the rivet is in contact with the workpiece, gently open the plate lever (not all loosened), the inching switch is immediately disconnected, and the push rod is still driven by the plate lever, so the oil return valve 30223 is still closed Therefore, oil is still stored in the cylinder 30231 and has a certain oil pressure, which can prevent the processing head 201 from resetting. The light pressing here can be half-pressing, and lightly opening can be half-loose, which can be set according to actual operation requirements.

According to some embodiments of the present invention, the punching mechanism 20 further includes a pliers body 203. The pliers body 203 has a first part and a second part spaced apart. The first part is connected to the body 10, and the second part is equipped with a processing mold 202. Yes, the processing mold 202 is detachably mounted on the second part, so that the processing mold 202 can be replaced with nails of different specifications. In addition, the pliers body 203 has a high strength to withstand the greater force during nail penetration. Of course, the pliers body 203 is also provided with jaws, and the pliers body 203 with a corresponding throat depth can be replaced according to the size of the workpiece. To ensure the nail penetration operation.

According to some embodiments of the present invention, the main body 10 is further provided with a hand-held part 50, and the control switch 40 is provided in the hand-held part 50. The hand-held part 50 includes a base 501 in which a battery is installed to supply power to the driving mechanism 30.

The handle 50 is provided to facilitate the taking and moving of the riveting gun, and the battery is not limited by the length of the power cord, thereby expanding the nail penetration range of the nail piercing gun.

The embodiment of the present invention also provides a riveting method, which uses the nail piercing gun as described above to rivet a workpiece. The following takes the nail piercing gun 100 as an example for specific description.

The riveting method for riveting workpieces by using the nail gun 100 includes steps:

S1. Load the rivets to the processing head 201;

Specifically, one end of the rivet is adsorbed on the magnet of the processing head 201, and the other end faces the center of the processing die 202;

S2. Place the part to be riveted of the workpiece between the rivet and the processing die 202;

S3, using the control switch 40 to control the driving mechanism 30 to drive the processing head 201 to pre-press the rivets so that the rivets contact the part to be riveted of the workpiece;

Specifically, the control switch 40 is used to control the driving mechanism 30 to stop working when the end of the rivet away from the processing head 201 contacts the workpiece. Preferably, the control switch 40 is used to control the driving mechanism 30 to stop working when the end of the rivet away from the processing head smoothly abuts against the workpiece.

S4. Use the control switch 40 to control the driving mechanism 30 to drive the processing head 201 to punch the rivet, so that the rivet penetrates the part to be riveted of the workpiece;

S5. Evacuate the workpiece.

In the above riveting method, by pre-pressing the rivet before the rivet is riveted, the rivet can be vertically penetrated into the workpiece, thereby improving the riveting quality of the workpiece and making the workpiece fully fixed.

The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, All should be considered as the scope of this specification.

The above-mentioned embodiments only express several embodiments of the present invention, and the descriptions are more specific and detailed, but they should not be understood as limiting the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

A nail piercing gun, characterized in that it comprises:

Ontology

A punching mechanism, connected to the body, including a processing head and a processing die used in cooperation with the processing head, the processing die is used for positioning the workpiece to be riveted, and the processing head is used for loading rivets;

A driving mechanism is provided on the body and connected with the processing head to drive the processing head to move relative to the processing die so that the rivets can penetrate the workpiece; and,

A control switch is provided in the body and connected to the drive mechanism. The control switch controls the drive mechanism to drive the drive mechanism before the processing head drives the rivet into the workpiece. The processing head pre-presses the rivet.
The nail piercing gun according to claim 1, wherein the control switch comprises:

Inching mechanism, movably connected to the body, used to control the driving mechanism to work or stop working;

During preloading, the inching mechanism controls the driving mechanism to stop working when the rivet on the processing head is in contact with the workpiece;

After the pre-compression is completed, the inching mechanism controls the operation of the driving mechanism.
The nail piercing gun according to claim 2, wherein:

A return spring is provided between the end of the body close to the processing head and the end of the drive mechanism away from the processing head;

The control switch also includes a transmission mechanism connected with the inching mechanism. When nails are inserted, the transmission mechanism is driven by the inching mechanism to prevent the processing head from resetting.
The nail piercing gun according to claim 3, wherein the driving mechanism comprises:

The first driving device is connected to the inching mechanism, and the inching mechanism controls the first driving device to work or stop working; and,

A second driving device is connected to the transmission mechanism, and the second driving device is driven by the first driving device and cooperates with the transmission mechanism to drive the processing head to move relative to the processing die.
The nail piercing gun according to claim 4, wherein:

The first driving device includes a motor, and the motor is connected to the inching mechanism;

The second driving device includes a hydraulic driving mechanism that includes an oil pack, a piston cylinder connected to the oil pack, and a hydraulic control mechanism, and the hydraulic control mechanism is located in a piston rod in the cylinder barrel of the piston cylinder The processing head is mounted on the piston rod and the return spring is arranged on the end of the piston rod away from the processing head and the piston cylinder barrel close to the processing head. Between one end

Wherein, the hydraulic control mechanism includes an oil inlet valve, a piston push rod, and an oil return valve. The oil inlet valve communicates with the oil bag and the piston cylinder through an oil inlet passage, and the piston push rod and the motor The power output end is connected, the oil return valve communicates with the piston cylinder and the oil bag through an oil return passage, and the transmission mechanism is connected with the oil return valve to control the opening or closing of the oil return valve.
The nail piercing gun according to claim 1, wherein the punching mechanism further comprises a pliers body, the pliers body has a first part and a second part spaced apart, the first part is connected to the body , The second part is installed with the processing mold, and the processing mold is provided with punching holes.
The nail piercing gun according to claim 6, wherein the processing mold is detachably mounted on the second part.
The nail piercing gun according to claim 1, wherein the body is further provided with a hand-held part, the control switch is arranged in the hand-held part, the hand-held part includes a base, and the base is installed Battery to power the driving mechanism.
A riveting method, characterized in that using the nail piercing gun according to any one of claims 1 to 8 to riveting a workpiece, comprising the steps of:

Loading rivets into the processing head;

Placing the part to be riveted of the workpiece between the rivet and the processing die;

Using a control switch to control the driving mechanism to drive the processing head to pre-press the rivet, so that the rivet contacts the part to be riveted of the workpiece;

Using a control switch to control the driving mechanism to drive the processing head to punch the rivet, so that the rivet penetrates vertically into the part to be riveted of the workpiece;

Evacuate the workpiece.
The riveting method according to claim 9, wherein in the step of using a control switch to control the driving mechanism to drive the processing head to pre-compress the rivet, the control switch is used when the rivet is away from the processing head. When one end is in contact with the workpiece, the driving mechanism is controlled to stop working.