阅读说明：本技术 一种自锁紧式焊钉拉拔器 (Self-locking type welding nail puller ) 是由 吴元斌 于 2020-06-08 设计创作，主要内容包括：一种自锁紧式焊钉拉拔器,属于汽车钣金凹陷修复用装置领域。其包括锤杆,特征在于：锤杆的前端安装自锁紧夹具,锤杆的后端安装握把,在锤杆上套装筒形滑移块；所述自锁紧夹具能够自动钳紧固定杆状焊钉。本发明能够自动钳紧直杆形焊钉,方便对其进行拉拽施力,固定紧实,即便是普通技术人员稍加练习即可熟练掌握安装操作技巧,有效保障了工作效率和使用安全。(A self-locking welding nail puller belongs to the field of devices for repairing automobile metal plate depressions. It includes the hammer stem, characterized in that: the front end of the hammer rod is provided with a self-locking clamp, the rear end of the hammer rod is provided with a handle, and the hammer rod is sleeved with a cylindrical sliding block; the self-locking clamp can automatically clamp and fix the rod-shaped welding nail. The straight rod-shaped welding nail can be automatically clamped, the straight rod-shaped welding nail is convenient to pull and apply force, the straight rod-shaped welding nail is firmly fixed, even if a common technician can skillfully master the installation and operation skills by slightly practicing, and the working efficiency and the use safety are effectively guaranteed.)

1. The utility model provides a self-locking type welding nail puller, includes the hammer stem, its characterized in that: the front end of the hammer rod is provided with a self-locking clamp, the rear end of the hammer rod is provided with a handle, and the hammer rod is sleeved with a cylindrical sliding block; the self-locking clamp can clamp the fixed rod-shaped welding nail.

2. The self-locking weld nail puller according to claim 1, wherein: the self-locking clamp comprises a return spring base, wherein the front end of the return spring base is provided with a return spring mounting column, a return spring is sleeved outside the return spring mounting column, and the rear end of the return spring abuts against the return spring base;

the front end of the reset spring mounting column is provided with a mounting column, the front end of the mounting column is provided with a mounting hole, the rear end of the tightening spring base is inserted into the mounting hole, the front end of the tightening spring base is provided with a tightening spring mounting column, a tightening spring is sleeved outside the tightening spring mounting column, and the rear end of the tightening spring abuts against the tightening spring base;

the jaw fixing device is characterized by further comprising a jaw mounting sleeve, wherein the jaw mounting sleeve is cylindrical, a propping ring is arranged at an opening at the front end of the jaw mounting sleeve, a jaw is arranged on the propping ring, an opening at the rear end of the jaw mounting sleeve is fixedly sleeved on the insertion column, and the propping spring is arranged in the jaw mounting sleeve; a frustum-shaped tong group is arranged between the abutting ring and the abutting spring, the tong group comprises more than two tong blocks, the large-diameter end of the tong group is abutted by the abutting spring, and the small-diameter end of the tong group can be inserted into a tong mouth of the abutting ring;

the outer sleeve is cylindrical, a mounting ring is arranged at an opening at the front end of the outer sleeve, a mounting opening is formed in the mounting ring, the middle part of the ejector block is fixed in the mounting opening, the front end of the ejector block extends out of the outer sleeve, and the rear end of the ejector block is positioned in the outer sleeve; a through hole is formed in the top block; the outer sleeve is sleeved at the front end of the reset spring mounting column;

when the outer sleeve is moved backwards, the rear end of the outer sleeve compresses the return spring, meanwhile, the jacking block can push the clamp block group to retreat by overcoming the elasticity of the jacking spring, the front end of each clamp block of the clamp block group is opened outwards after being withdrawn from the jaw, and at the moment, the rod-shaped welding nails can be directly inserted between the clamp blocks from the through holes of the jacking block; and (3) loosening the outer sleeve, moving the outer sleeve forwards under the elastic force of the return spring, pushing the front end of each clamp block by the jacking spring to be clamped by the jaw again, and clamping the rod-shaped welding nail by each clamp block at the moment.

3. The self-locking weld nail puller according to claim 2, wherein: the outer side of the clamp block is provided with a smooth inclined plane, and the inner side of the clamp block is provided with clamp teeth.

4. The self-locking weld nail puller according to claim 3, wherein: the self-locking clamp further comprises a connecting base, the rear end of the connecting base is connected with the front end of the hammer rod, and the front end of the connecting base is connected with the rear end of the return spring base.

5. The self-locking weld nail puller according to claim 4, wherein: the anti-skid sleeve is characterized by further comprising a pull-back sleeve, the pull-back sleeve is sleeved on the outer wall of the rear end of the outer sleeve through threads, and the outer peripheral wall of the pull-back sleeve is provided with threads or punctiform anti-skid protrusions.

Technical Field

The invention belongs to the field of devices for repairing sunken parts of automobile metal plates, and particularly relates to a welding nail pull hammer.

Background

When the automobile receives the striking, the panel beating on automobile body surface can take place to warp, and little to a pit, big to a valley all can influence the pleasing to the eye of automobile body. Two methods are generally used for repairing such sheet metal parts: one is the traditional repairing method, the depression is pried back, and then the depression is repaired by using a hammer and a sizing block; the other method is to use a sheet metal reshaping device to restore the sheet metal.

The first method principle is simple, but the operation technique that needs the workman is very consummate, and because many planks receive the restriction of structures such as welded-together inside plate and door window, be difficult to touch their inside, or can't utilize ready-made hole to use the sled pick to prize, or because the damage is lighter and only confine the metal planking to, inside does not damage, if dismantle the inner panel according to traditional repair technology or dismantle relevant structure and repair the planking sunkenly of automobile body, to automobile body maintenance work load can increase a lot among the intangible, production efficiency also can reduce greatly, whole rest and finish the process and waste time and energy, the effect still is difficult to guarantee.

The second repair method is to use the welding nail shown in fig. 1, weld and fix the front end of the welding nail at the concave position of the automobile metal plate according to the mode shown in fig. 2, then lock the rear end of the welding nail through a puller and pull the welding nail outwards until the concave position is leveled. Due to different concave shapes, the used welding nails are various in shapes, and the welding nails with complex shapes are often easily fixed by the pull hammer, but are smooth straight rod-shaped welding nails, so that the welding nails are easily separated from the pull hammer in the outward pulling process and are difficult to fix and compact. The front end of a general rod-shaped welding nail for welding is a spherical body or a conical body with different sizes so as to adapt to the repair of circular or conical depressions, the use frequency is extremely high, and the structure of the pull hammer adopted by the straight rod-shaped welding nail is more urgently needed to be transformed and upgraded. .

In view of this, the applicant has devised the present device to effectively solve the above technical problem. This device can clinch the rear end of straight bar shape welding nail automatically, conveniently draws the operation to it.

Disclosure of Invention

The invention aims to provide a self-locking type welding nail puller which can automatically clamp the rear end of a straight rod-shaped meson and is convenient to pull.

In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a self-locking type welding nail puller, including the hammer stem, its characterized in that: the front end of the hammer rod is provided with a self-locking clamp, the rear end of the hammer rod is provided with a handle, and the hammer rod is sleeved with a cylindrical sliding block; the self-locking clamp can clamp the fixed rod-shaped meson tightly.

Preferably, the self-locking clamp further comprises a return spring base, the front end of the return spring base is provided with a return spring mounting column, a return spring is sleeved outside the return spring mounting column, and the rear end of the return spring abuts against the return spring base;

the front end of the reset spring mounting column is provided with a mounting column, the front end of the mounting column is provided with a mounting hole, the rear end of the tightening spring base is inserted into the mounting hole, the front end of the tightening spring base is provided with a tightening spring mounting column, a tightening spring is sleeved outside the tightening spring mounting column, and the rear end of the tightening spring abuts against the tightening spring base;

the jaw fixing device is characterized by further comprising a jaw mounting sleeve, wherein the jaw mounting sleeve is cylindrical, a propping ring is arranged at an opening at the front end of the jaw mounting sleeve, a jaw is arranged on the propping ring, an opening at the rear end of the jaw mounting sleeve is fixedly sleeved on the insertion column, and the propping spring is arranged in the jaw mounting sleeve; a frustum-shaped tong group is arranged between the abutting ring and the abutting spring, the tong group comprises more than two tong blocks, the large-diameter end of the tong group is abutted by the abutting spring, and the small-diameter end of the tong group can be inserted into a tong mouth of the abutting ring;

the outer sleeve is cylindrical, a mounting ring is arranged at an opening at the front end of the outer sleeve, a mounting opening is formed in the mounting ring, the middle part of the ejector block is fixed in the mounting opening, the front end of the ejector block extends out of the outer sleeve, and the rear end of the ejector block is positioned in the outer sleeve; a through hole is formed in the top block; the outer sleeve is sleeved at the front end of the reset spring mounting column;

when the outer sleeve is moved backwards, the rear end of the outer sleeve compresses the return spring, meanwhile, the jacking block can push the clamping block group to retreat by overcoming the elasticity of the jacking spring, the front end of each clamping block of the clamping block group is opened outwards after being withdrawn from the jaw, and at the moment, the rod-shaped meson can be directly inserted between the clamping blocks from the through hole of the jacking block; and the outer sleeve is loosened, moves forwards under the elastic force of the return spring, the jacking spring pushes the front end of each clamp block to be clamped by the jaw again, and at the moment, each clamp block can clamp the rod-shaped meson.

At this time, the worker can hold the grip with one hand and pull back the cylindrical sliding block along the hammer rod with the other hand repeatedly until the front end of the rod-shaped meson flattens the recessed part.

Preferably, the outer side of the clamp block is provided with a smooth inclined plane, and the inner side of the clamp block is provided with clamp teeth.

Preferably, the self-locking clamp further comprises a connecting base, the rear end of the connecting base is connected with the front end of the hammer rod, and the front end of the connecting base is connected with the rear end of the return spring base.

Preferably, the anti-skid device further comprises a pull-back sleeve, the pull-back sleeve is sleeved on the outer wall of the rear end of the outer sleeve through threads, and the outer peripheral wall of the pull-back sleeve is provided with threads or punctiform anti-skid protrusions.

Compared with the prior art, the invention has the beneficial effects that:

the straight rod-shaped welding nail meson can be automatically clamped, the straight rod-shaped welding nail meson can be conveniently pulled and applied with force, the straight rod-shaped welding nail meson is firmly fixed, even if a common technician can skillfully master the installation operation skill by slightly exercising, and the working efficiency and the use safety are effectively ensured.

Drawings

FIG. 1 is a schematic view of a straight bar-shaped weld nail;

FIG. 2 is a schematic structural diagram of a straight rod-shaped welding nail in use;

FIG. 3 is a schematic structural view of the present invention;

FIG. 4 is a sectional view taken along line A-A of FIG. 3;

FIG. 5 is a schematic structural view of the self-locking clamp (the clamp block set is in a closed state);

FIG. 6 is a schematic structural view of the self-locking clamp (the clamp block set is in an open state);

FIG. 7 is a schematic structural diagram of a self-locking fixture for fixing a straight rod-shaped implement;

FIG. 8 is a schematic structural view of a closed state of the jaw set;

FIG. 9 is a schematic view of the B-direction structure of FIG. 8;

FIG. 10 is a schematic structural view of the jaw set in an open state;

FIG. 11 is a schematic view of the C-direction structure of FIG. 10;

in the figure: 1. a straight bar-shaped meson; 2. a recessed portion;

3. self-locking clamp: 3.1, connecting a base; 3.2, pulling back the sleeve; 3.3, a return spring; 3.4, mounting a column by using a return spring; 3.5, inserting holes; 3.6, inserting a column; 3.7, a jaw mounting sleeve; 3.8, a clamp block; 3.9, clamp teeth; 3.10, a top block; 3.11, mounting ports; 3.12, mounting a ring; 3.13, through holes; 3.14, jaws; 3.15, abutting against the ring; 3.16, tightly pushing the spring; 3.17, tightly pushing the spring mounting column; 3.18, tightly pushing the spring base; 3.19, a return spring base;

4. a hammer lever; 5. a cylindrical sliding block; 6. a handle.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

The invention relates to a self-locking welding nail puller which comprises a hammer rod, wherein a self-locking clamp is arranged at the front end of the hammer rod, a handle is arranged at the rear end of the hammer rod, and a cylindrical sliding block is sleeved on the hammer rod; the self-locking clamp can clamp the fixed rod-shaped meson tightly. In the present invention, the side facing the grip is defined as the rear, and vice versa as the front.

The self-locking clamp comprises a connecting base, the rear end of the connecting base is connected with the front end of the hammer rod, and the front end of the connecting base is connected with the rear end of the return spring base. The front end of the reset spring base is provided with a reset spring mounting column, a reset spring is sleeved outside the reset spring mounting column, and the rear end of the reset spring is propped against the reset spring base;

the front end of the reset spring mounting column is provided with a mounting column, the front end of the mounting column is provided with a mounting hole, the rear end of the tightening spring base is inserted into the mounting hole, the front end of the tightening spring base is provided with a tightening spring mounting column, a tightening spring is sleeved outside the tightening spring mounting column, and the rear end of the tightening spring abuts against the tightening spring base;

the jaw fixing device is characterized by further comprising a jaw mounting sleeve, wherein the jaw mounting sleeve is cylindrical, a propping ring is arranged at an opening at the front end of the jaw mounting sleeve, a jaw is arranged on the propping ring, an opening at the rear end of the jaw mounting sleeve is fixedly sleeved on the insertion column, and the propping spring is arranged in the jaw mounting sleeve; a frustum-shaped tong group is arranged between the abutting ring and the abutting spring, the tong group comprises more than two tong blocks, the large-diameter end of the tong group is abutted by the abutting spring, and the small-diameter end of the tong group can be inserted into a tong mouth of the abutting ring; the outer side of the clamp block is provided with a smooth inclined plane, and the inner side of the clamp block is provided with clamp teeth.

The outer sleeve is cylindrical, a mounting ring is arranged at an opening at the front end of the outer sleeve, a mounting opening is formed in the mounting ring, the middle part of the ejector block is fixed in the mounting opening, the front end of the ejector block extends out of the outer sleeve, and the rear end of the ejector block is positioned in the outer sleeve; a through hole is formed in the top block; the outer sleeve is sleeved at the front end of the reset spring mounting column.

The anti-skid sleeve is characterized by further comprising a pull-back sleeve, the pull-back sleeve is sleeved on the outer wall of the rear end of the outer sleeve through threads, and the outer peripheral wall of the pull-back sleeve is provided with threads or punctiform anti-skid protrusions.

When the sleeve and the outer sleeve are pulled back, the rear end of the outer sleeve compresses the return spring, meanwhile, the jacking block can push the clamp block group to retreat by overcoming the elasticity of the jacking spring, the front end of each clamp block of the clamp block group is opened outwards after being withdrawn from the jaw, and at the moment, the rod-shaped meson can be directly inserted between the clamp blocks from the through hole of the jacking block; the outer sleeve is loosened, the outer sleeve moves forwards under the elastic force of the return spring, the jacking spring pushes the front end of each pliers block to be hooped by the pliers mouth again, and at the moment, the pliers teeth on the inner wall of each pliers block clamp the rod-shaped meson. At this time, the worker can hold the grip with one hand and pull back the cylindrical sliding block along the hammer rod with the other hand repeatedly until the front end of the rod-shaped meson flattens the recessed part.

The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention, without departing from the technical solution of the present invention, still belong to the protection scope of the technical solution of the present invention.