CN210387920U - Spot welding machine with low consumption of spot welding needle - Google Patents

Abstract

The utility model relates to the technical field of machinery, and a spot welding machine of low consume of spot welding needle is disclosed, including the base, the top fixed mounting of base has the support column, and the below of pressing the platform is connected with buffer spring, is connected with down the spot welding needle on the electrode holder down, is connected with the connecting rod on the aircraft nose connecting plate, is connected with first bevel gear on the connecting rod, and the overlap joint has second bevel gear on the first bevel gear, and the cross-under has the screw rod on the second bevel gear, is connected with the pressing plate on the screw rod. This spot welding machine of low consume of spot welding needle, when the aircraft nose pushed down, the aircraft nose also drove the connecting rod of being connected with it and pushed down in step, the first bevel gear of connecting on the connecting rod simultaneously with the second bevel gear overlap joint of below, the screw rod rotation of drive cross-under with it, the pressure board descends in step under the rotation of screw rod, with the contact gradually of pressing the platform for synchronous centre gripping spot welding spare when spot welding, through the cooperation of above device, realized the purpose of automatic centre gripping.

Description

Spot welding machine with low consumption of spot welding needle

Technical Field

The utility model relates to the technical field of machinery, specifically be a spot welder of low consume of spot welding needle.

Background

The spot welder adopts the principle of double-sided double-point over-current welding, when in work, two electrodes pressurize a workpiece to enable two layers of metals to form a certain contact resistance under the pressure of the two electrodes, when welding current flows from one electrode to the other electrode, instant thermal welding is formed at the two contact resistance points, and the welding current instantly flows from the other electrode to the electrode along the two workpieces to form a loop, and the internal structure of the workpiece to be welded is not damaged.

The last spot welding needle and the lower spot welding needle of traditional spot welder frame all adopt components of a whole that can function independently welding technique, and lower spot welding needle direct fixation is on welding the platform under, and upward spot welding needle is from the projection of last spot welding bench, has following defect in the use: due to the fact that the split welding technology of the upper spot welding needle and the lower spot welding needle is adopted, the problem that the upper spot welding needle and the lower spot welding needle are subjected to large rigid deformation under the condition of stress is caused inevitably from the mechanical point of view, the problem is not overcome easily, the upper spot welding needle and the lower spot welding needle can crack after a few welding devices are used for a long time, welding strength can be well grasped normally during manual spot welding, the consumption of the spot welding needles is not serious, the manual welding efficiency is too low, the spot welding is generally performed by a spot welding machine, the problem cannot be solved during welding of the spot welding machine, the consumption of the spot welding needles is too large, and therefore the spot welding machine with the low consumption of the spot welding needles is provided.

SUMMERY OF THE UTILITY MODEL

For the purpose of realizing above-mentioned low consume, the utility model provides a following technical scheme: a spot welding machine with a low loss of spot welding needles comprises a base, wherein a supporting column is fixedly installed above the base, the top end of the supporting column is connected with a C-shaped frame, a machine head connecting plate is connected onto the C-shaped frame, a machine head is connected onto the machine head connecting plate, an air cylinder is arranged on the machine head, an upper electrode base is connected below the machine head, an upper spot welding needle is connected onto the upper electrode base, the middle end of the supporting column is connected with a pressing platform, a buffer spring is connected below the pressing platform, a fixing platform is connected below the buffer spring, a lower electrode base is connected inside the pressing platform, a lower spot welding needle is connected onto the lower electrode base, a connecting rod is connected onto the machine head connecting plate, a first bevel gear is connected onto the connecting rod, a second bevel gear is lapped on the first bevel gear, and a screw rod is connected onto the second bevel gear in, the screw is connected with a pressing plate.

Preferably, the lower electrode holder is arranged in the pressing platform, and a slide way and a latch are arranged in the lower electrode holder, so that the lower electrode holder is a movable component and is used for moving in the pressing platform when being pressed.

Preferably, the joint of the machine head connecting plate and the C-shaped frame is provided with a slideway, and the connecting rod is connected to the slideway in a penetrating manner and used for moving up and down in the slideway.

Preferably, the C-shaped frame and the supporting column are both hollow and are used for the cross-connecting device.

Preferably, the upper spot welding needle and the lower spot welding needle are positioned on the same axis,

advantageous effects

Compared with the prior art, the utility model provides a spot welder of low consume of spot welding needle possesses following beneficial effect:

1. this spot welding machine of low consume of spot welding needle, when using, the cylinder begins work, promote the aircraft nose of its below and push down, the aircraft nose drives the last electrode holder and the last spot welding needle of its below and begins to push down, with the lower spot welding needle contact of below, be used for spot welding, in order to avoid taking place two spot welding needles and directly take place rigid contact, cause the loss of spot welding needle, lower spot welding needle is after contacting with last spot welding needle, because the reason of gravity, push down at once, drive electrode holder oppression buffer spring down, the reduction of very big degree two spot welding needle direct contact rigid damages that cause, the mesh of protection spot welding needle has been reached.

2. This spot welding machine of low consume of spot welding needle, when the aircraft nose pushed down, the aircraft nose also drove the connecting rod of being connected with it in step and pushed down, the first bevel gear of connecting on the connecting rod simultaneously with the second bevel gear overlap joint of below, second bevel gear rotates thereupon, the screw rod rotation of drive cross-under with it, the pressure plate descends in step under the rotation of screw rod, with pressing the platform and contact gradually for synchronous centre gripping spot welding spare when spot welding, through the cooperation of above device, the purpose of automatic centre gripping has been realized.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a general view of the driving structure of the present invention;

fig. 3 is the utility model discloses C type frame and depend on subassembly to disassemble structural schematic.

In the figure: the device comprises a base 1, a support column 2, a C-shaped frame 3, a nose connecting plate 4, a nose 5, a cylinder 6, an upper electrode holder 7, an upper spot welding needle 8, a pressing platform 9, a buffer spring 10, a fixing table 11, a lower electrode holder 12, a lower spot welding needle 13, a connecting rod 14, a first bevel gear 15, a second bevel gear 16, a screw rod 17, a pressing plate 18 and a slideway 19.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a spot welding machine with low consumption of spot welding needles comprises a base 1, a support pillar 2 is fixedly installed above the base 1, a C-shaped frame 3 is connected to the top end of the support pillar 2, a machine head connecting plate 4 is connected to the C-shaped frame 3, a machine head 5 is connected to the machine head connecting plate 4, an air cylinder 6 is arranged on the machine head 5, an upper electrode base 7 is connected to the lower portion of the machine head 5, an upper spot welding needle 8 is connected to the upper electrode base 7, a pressing platform 9 is connected to the middle end of the support pillar 2, a buffer spring 10 is connected to the lower portion of the pressing platform 9, a fixing platform 11 is connected to the lower portion of the buffer spring 10, a lower electrode base 12 is connected to the inside of the pressing platform 9, a lower spot welding needle 13 is connected to the lower electrode base 12, when in use, the air cylinder 6 starts to work to push the machine head 5 below the pressing, the machine, with the lower spot welding needle 13 contact of below for spot welding, in order to avoid taking place two spot welding needles and directly take place the rigidity contact, cause the loss of spot welding needle, lower spot welding needle 13 is after contacting with last spot welding needle 9, because the reason of gravity, pushes down at once, drives electrode holder 12 oppression buffer spring 10 down, the reduction of very big degree two spot welding needle direct contact rigid damage that cause has reached the purpose of protection spot welding needle. The connecting rod 14 is connected to the machine head connecting plate 4, the first bevel gear 15 is connected to the connecting rod 14, the second bevel gear 16 is lapped on the first bevel gear 15, the screw 17 is connected to the second bevel gear 16 in a penetrating mode, the pressing plate 18 is connected to the screw 17, when the machine head 5 presses down, the machine head 5 synchronously drives the connecting rod 14 connected with the machine head to press down, the first bevel gear 15 connected to the connecting rod 14 is lapped with the second bevel gear 16 below (the first bevel gear 15 keeps rotating when the device is started), the second bevel gear 16 rotates along with the first bevel gear, the screw 17 connected with the second bevel gear is driven to rotate, the pressing plate 18 synchronously descends under the rotation of the screw 17 and gradually contacts with the pressing platform 9, the point welding part is synchronously clamped during point welding, and the purpose of automatic clamping is achieved through the matching of the device.

The working principle is as follows: when the spot welding machine with the low consumption of the spot welding needles is used, the air cylinder 6 starts to work to push the machine head 5 below the air cylinder to press downwards, the machine head 5 drives the upper electrode base 7 and the upper spot welding needle 9 below the machine head to press downwards to be in contact with the lower spot welding needle 13 below the machine head for spot welding, in order to avoid the direct rigid contact of the two spot welding needles and the loss of the spot welding needles, the lower spot welding needle 13 is pressed downwards immediately after being in contact with the upper spot welding needle 9 due to gravity to drive the lower electrode base 12 to press the buffer spring 10, the rigid damage caused by the direct contact of the two spot welding needles is reduced to a great extent, and the purpose of protecting the spot welding needles is achieved; when the machine head 5 is pressed down, the machine head 5 also synchronously drives the connecting rod 14 connected with the machine head to be pressed down, the first bevel gear 15 connected with the connecting rod 14 is simultaneously lapped with the second bevel gear 16 below (the first bevel gear 15 keeps rotating when the device is started), the second bevel gear 16 rotates along with the first bevel gear to drive the screw 17 connected with the second bevel gear to rotate, the pressing plate 18 synchronously descends under the rotation of the screw 17 and is gradually contacted with the pressing platform 9 for synchronously clamping a spot welding part during spot welding, and the purpose of automatic clamping is realized through the matching of the devices.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. A spot welder of low loss of spot welding needle, includes base (1), its characterized in that: the upper end of the base (1) is fixedly provided with a support column (2), the top end of the support column (2) is connected with a C-shaped frame (3), the C-shaped frame (3) is connected with a machine head connecting plate (4), the machine head connecting plate (4) is connected with a machine head (5), the machine head (5) is provided with a cylinder (6), the lower part of the machine head (5) is connected with an upper electrode holder (7), the upper electrode holder (7) is connected with an upper spot welding needle (8), the middle end of the support column (2) is connected with a pressing platform (9), the lower part of the pressing platform (9) is connected with a buffer spring (10), the lower part of the buffer spring (10) is connected with a fixed platform (11), the inner part of the pressing platform (9) is connected with a lower electrode holder (12), the lower electrode holder (12) is connected with a lower spot welding needle (13), the machine head connecting plate (4) is connected with a connecting, the connecting rod (14) is connected with a first bevel gear (15), a second bevel gear (16) is lapped on the first bevel gear (15), a screw rod (17) penetrates through the second bevel gear (16), and a pressing plate (18) is connected onto the screw rod (17).

2. A spot welder with low loss of spot welding needles according to claim 1, characterized by: the lower electrode holder (12) is arranged in the pressing platform (9), and is internally provided with a slide way and a latch which are movable components.

3. A spot welder with low loss of spot welding needles according to claim 1, characterized by: a sliding way (19) is designed at the joint of the machine head connecting plate (4) and the C-shaped frame (3), and the connecting rod (14) is connected to the sliding way (19) in a penetrating mode.

4. A spot welder with low loss of spot welding needles according to claim 1, characterized by: the C-shaped frame (3) and the support column (2) are both hollow.

5. A spot welder with low loss of spot welding needles according to claim 1, characterized by: the upper spot welding needle (8) and the lower spot welding needle (13) are positioned on the same axis.

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