CN212947561U - Piston type drawing tool - Google Patents

Abstract

The utility model discloses a piston drawing tool, include: the clamping head is arranged at the bottom of the sleeve, and the top of the sleeve is fixedly connected with a stress block; the piston assembly comprises a piston head and a drawing handle, the piston head is arranged in the sleeve and can move along the wall surface of the sleeve, the drawing handle is fixedly connected with the piston head and penetrates through the stress block to extend out of the sleeve, and the drawing handle can pull the piston head to upwards collide with the stress block so as to push the sleeve. The utility model discloses outwards stimulate piston assembly, piston head collision atress piece transmits the impact force to the sleeve in, and the sleeve is outwards extracted at the lower driving workpiece of continuous striking, has reduced the arm-tie degree of difficulty, improves and draws the ability, reaches the effect of drawing fast.

Description

Piston type drawing tool

Technical Field

The utility model relates to a machinery dismouting technical field, in particular to piston instrument of drawing.

Background

In the field of machine manufacturing, interference fit pin-like components or other components insertedly connected to equipment or large equipment are commonly used, such as valve cores in hot runners of injection molding machines, pins in injection molding machines, and the like. The existing method is that workers usually remove the parts through pliers or wrenches, so that labor is wasted, the labor strength of the workers is tested, time and labor are consumed, and the parts are inconvenient to remove.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a piston type drawing tool can realize the quick drawing process of part.

According to the utility model discloses a piston drawing tool of first aspect embodiment includes: the clamping head is arranged at the bottom of the sleeve, and the top of the sleeve is fixedly connected with a stress block; the piston assembly comprises a piston head and a drawing handle, the piston head is arranged in the sleeve and can move along the wall surface of the sleeve, the drawing handle is fixedly connected with the piston head and penetrates through the stress block to extend out of the sleeve, and the drawing handle can pull the piston head to upwards collide with the stress block so as to push the sleeve.

According to the utility model discloses piston drawing tool has following beneficial effect at least: the piston assembly is pulled outwards, the impact force is transmitted to the sleeve by the piston head collision stress block, the sleeve pulls the workpiece outwards under continuous impact, the pulling plate difficulty is reduced, the pulling capacity is improved, and the effect of quick pulling is achieved.

According to some embodiments of the present invention, the side wall of the sleeve is provided with a guide groove arranged along the moving direction of the piston head, and the piston head is provided with a guide head arranged in the guide groove and capable of moving along the guide head.

According to some embodiments of the utility model, draw the handle and include the connecting rod and draw the head, the connecting rod along piston head direction of motion stretches out to outside the sleeve, draw the head setting to be in the connecting rod stretches out telescopic one end, the connection can be dismantled to the piston head the connecting rod stretches into to telescopic bottom.

According to some embodiments of the utility model, be equipped with positioning groove on the atress piece, the bottom of drawing head is equipped with the locating piece with positioning groove matched with.

According to some embodiments of the invention, the connecting rod is a threaded rod, the drawing head and the piston head are all threaded on the connecting rod.

According to some embodiments of the invention, the drawing head is a hexagon nut arranged on the connecting rod.

According to some embodiments of the utility model, the bottom of chuck is equipped with presss from both sides tight hole, it is equipped with the internal thread to press from both sides tight hole.

According to some embodiments of the invention, the force-bearing block is threaded on the sleeve top.

According to some embodiments of the invention, the collet is secured to the sleeve bottom by a rivet.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view of the piston assembly shown in FIG. 1;

FIG. 3 is an internal structural view of the overall structure shown in FIG. 1;

fig. 4 is a bottom view of the overall structure shown in fig. 1.

Reference numerals:

sleeve 100, guide groove 110;

the drawing handle 200, the drawing head 210, the positioning block 211 and the connecting rod 220;

a piston head 300, a guide head 310;

a chuck 400, a workpiece port 410, an inner cavity 420;

a force block 500.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the present number, and the terms greater than, less than, within, etc. are understood as including the present number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

Referring to fig. 1 to 4 together, a piston-type drawing tool according to an embodiment of the present invention will be described below.

As shown in fig. 1 to 4, a piston type drawing tool comprises a sleeve 100 and a piston assembly arranged in the sleeve 100, wherein the piston assembly comprises a piston head 300 and a drawing handle 200, the bottom of the sleeve 100 is provided with a connector for clamping or clamping a workpiece to be drawn, the top of the sleeve 100 is provided with a stress block 500, the stress block 500 is fixedly connected to the sleeve 100 and can bear the impact force caused by the piston head 300, the stress block 500 is tightly connected with the sleeve 100, and the connection mode can be threaded connection, pin connection, riveting or welding. The piston block is arranged inside the sleeve 100 and can move along the wall surface of the sleeve 100, the drawing handle 200 is fixedly connected with the piston head 300 and extends out of the sleeve 100 after penetrating through the stress block 500, the drawing handle 200 is used for drawing the piston head 300 to perform piston movement in the sleeve 100, the impact stress block 500 is collided, the sleeve 100 is pushed to move towards the drawing direction, and a workpiece to be drawn is drawn out.

The middle part of the force bearing block 500 is provided with a guide hole which can receive the pulling handle 200 to pass through, wherein the diameter of the guide hole is smaller than that of the piston head 300, and the piston head 300 cannot jump out of the sleeve 100 from the sleeve 100, so that the piston head 300 is limited in the sleeve 100. The whole device can be made of metal materials such as cast iron and steel, and the stress block 500 can be made of impact-resistant materials which are more impact-resistant, so that the drawing function is realized, and the service life is prolonged.

In some embodiments of the present invention, the side wall of the sleeve 100 is provided with the guide groove 110, the guide groove 110 is disposed along the axial direction of the sleeve 100, i.e., the moving direction of the piston head 300, and the guide groove 110 may be formed by a punching or cutting process. The piston head 300 is provided with a guide head 310, the guide head 310 is arranged in the guide groove 110 and can move along the guide groove 110, and the guide head 310 is used for limiting the circumferential position of the piston head 300 in the sleeve 100, so that the problem of poor drawing effect caused by free rotation is avoided, and the function of guiding the drawing direction of the piston head 300 is achieved. The guide 310 may be a dowel pin mounted on the piston head 300.

In some embodiments of the present invention, the pulling handle 200 includes a connecting rod 220 and a pulling head 210, the upper end of the connecting rod 220 extends out of the sleeve 100, the pulling head 210 is disposed at the upper end of the connecting rod 220 extending out of the sleeve 100, the piston head 300 can be detachably connected at the bottom of the connecting rod 220, the piston head 300 can be detachably connected on the connecting rod 220 to facilitate the replacement process, when the piston head 300 is damaged, the piston assembly can realize the quick replacement process only by replacing the piston head 300, because the piston head 300 and the connecting rod 220 are easily damaged parts, the parts can be replaced in a targeted manner. The drawing head 210 of the connecting rod 220 should leave a drawing interval with the piston head 300, which limits the drawable depth of the connecting rod 220.

Specifically, the connecting rod 220 is a screw rod, the drawing head 210 and the piston head 300 are both in threaded connection with the connecting rod 220, a threaded hole is formed in the piston head 300 and is matched with the connecting rod 220, the drawing head 210 can be a nut arranged on the connecting rod 220, the nut is a hexagon nut, the position of the drawing head on the connecting rod 220 can be adjusted, the distance between the drawing head 210 and the piston head 300 is further adjusted, and the drawing depth can be adjusted.

The utility model discloses a some embodiments are equipped with positioning groove on the atress piece 500, and the bottom of drawing head 210 is equipped with the locating piece 211 with positioning groove matched with, and when piston head 300 recovered to minimum degree of depth in sleeve 100, drawing head 210 butt was at the top surface of atress piece 500, and positioning groove and locating piece 211's cooperation structure was when idle fixed a position shrink piston assembly, protection piston assembly.

In some embodiments of the present invention, the bottom of the clamping head 400 is provided with a clamping hole, the clamping hole is provided with an internal thread capable of being connected with the belt-drawing workpiece, and the clamping head 400 can be fixed or clamped by a threaded connection. In addition, the chuck 400 may be other mechanical clamping or securing devices commercially available for clamping workpieces. In this embodiment, an inner cavity 420 is formed inside the chuck 400, a workpiece opening 420 is formed in the bottom of the chuck 400, the workpiece can be inserted into the workpiece, a convex edge or a convex structure is formed on the workpiece, and the workpiece is inserted into the inner cavity 420 from the workpiece opening 420 and clamped by the inner cavity 420.

In some embodiments of the present invention, the collet 400 may be fixedly connected to the bottom of the sleeve 100 by a rivet, i.e., a riveting manner, or may be fixedly connected to the bottom of the sleeve 100 by a screw connection or a welding manner.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (9)

1. A piston pulling tool, comprising:

the clamp comprises a sleeve (100), wherein a clamping head (400) is arranged at the bottom of the sleeve (100), and a stress block (500) is fixedly connected to the top of the sleeve (100);

the piston assembly comprises a piston head (300) and a drawing handle (200), wherein the piston head (300) is arranged in the sleeve (100) and can move along the wall surface of the sleeve (100), the drawing handle (200) is fixedly connected with the piston head (300) and penetrates through the stress block (500) to extend out of the sleeve (100), and the drawing handle (200) can pull the piston head (300) to upwards collide with the stress block (500) so as to push the sleeve (100).

2. The piston pulling tool according to claim 1, wherein the side wall of the sleeve (100) is provided with a guide groove (110) arranged in the direction of movement of the piston head (300), and the piston head (300) is provided with a guide head (310) arranged in the guide groove (110) and movable along the guide head (310).

3. The piston-type drawing tool according to claim 1, wherein the drawing handle (200) comprises a connecting rod (220) and a drawing head (210), the connecting rod (220) extends out of the sleeve (100) along the movement direction of the piston head (300), the drawing head (210) is arranged at one end of the connecting rod (220) extending out of the sleeve (100), and the piston head (300) is detachably connected at the bottom end of the connecting rod (220) extending into the sleeve (100).

4. The piston-type drawing tool according to claim 3, wherein the force-receiving block (500) is provided with a positioning groove, and the bottom of the drawing head (210) is provided with a positioning block (211) which is matched with the positioning groove.

5. The piston drawing tool according to claim 3, wherein the connecting rod (220) is a screw, the drawing head (210) and the piston head (300) both being threaded on the connecting rod (220).

6. The piston drawing tool according to claim 5, wherein the drawing head (210) is a hexagonal nut provided on a connecting rod (220).

7. The piston pulling tool according to claim 1, wherein the collet (400) is provided with a clamping hole at its bottom, the clamping hole being provided with an internal thread.

8. The piston drawing tool according to claim 1, wherein the force block (500) is threaded on top of the sleeve (100).

9. The piston pulling tool according to claim 1, wherein the collet (400) is secured to the bottom of the sleeve (100) by a rivet.

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