CN223368026U - A tubing punching and compression die - Google Patents

Abstract

The utility model relates to an oil pipe punching necking mould which comprises a lower mould unit and a moving mechanism penetrating through the lower mould unit, wherein the moving mechanism positioned above the lower mould unit is connected with a power device through a shrinkage die shank, an upper running space and a lower running space of the mould are respectively formed above and below the lower mould unit by taking the lower mould unit as boundaries, an oil pipe is installed in the upper running space above the lower mould unit, the moving mechanism is driven to move up and down under the power action of the power device so as to realize necking punching of the oil pipe, the original end machine working procedure is converted into a punching necking working procedure by utilizing the mould, the structure principle of the necking mode is simple, the operation is easy, the working difficulty can be reduced, the positioning stability of a product is ensured in the processing process, the surface roughness of the processed product can be ensured, the parts of the mould are convenient to replace, the whole loss of the mould is reduced, the service life of the mould is prolonged, and the processing efficiency of the product is improved.

Description

Oil pipe punching press throat mould

Technical Field

The utility model relates to pipe diameter reducing equipment for pipe products, in particular to an oil pipe stamping necking mould, and belongs to the field of pipe fitting production.

Background

In the process of automobile production and manufacture, an oil pipe joint is a key component, the quality and the stability of the oil pipe joint are directly related to the performance and the safety of an automobile, and in the process of production, the oil pipe joint needs to be subjected to reducing and necking treatment. The existing oil pipe necking mode adopts a necking mould to carry out end necking forming for end machine working, and the mode has the defects of high working difficulty, inconvenient mould replacement operation, low machining efficiency and the like, the surface roughness of a machined product cannot be ensured, the machining size of the product is unstable in the machining process, and finally the production cost is increased.

Disclosure of utility model

In view of various technical problems existing in oil pipe necking work in the prior art, the utility model aims to provide an oil pipe stamping necking mould, which is used for converting an original end machine process into a stamping necking process, so that the working difficulty is greatly reduced, and the processing efficiency is improved.

The oil pipe punching necking mould comprises a lower mould unit and a moving mechanism penetrating through the lower mould unit, wherein the moving mechanism positioned above the lower mould unit is connected with a power device through a shrinkage mould handle, an upper running space and a lower running space of the mould are respectively formed above and below the lower mould unit by taking the lower mould unit as a boundary, and an oil pipe is arranged in the upper running space positioned above the lower mould unit;

Further, the power device adopts a press machine which is matched and connected with the top of the shrinkage pipe die shank;

further, a positioning rod unit is arranged in the upper running space of the clamping fixture;

The lower die unit comprises a lower die with a circular boss structure and a female die embedded in the lower die, wherein the female die is of a T-shaped cross section structure, the outer diameter of the female die is matched with the inner diameter of the lower die, the female die is matched and clamped in the lower die, so that the body part of the female die is embedded in the cavity of the lower die, the T-shaped extension table of the female die is erected on the upper surface of the edge of the cavity of the lower die, the center of the female die is provided with a reducing channel, the reducing channel penetrates through the whole height of the female die from top to bottom, the upper part of the reducing channel is a large-diameter area section, the lower part of the reducing channel is a small-diameter area section, and an inclined plane transition area is formed at the joint of the large-diameter area section to the small-diameter area section;

further, a concave die clamped on the lower die is erected and provided with a convex part relative to the upper surface of the lower die;

The moving mechanism comprises an upper plate, a pushing plate, a positioning pushing rod, a guide rod and a nut, wherein the upper plate is connected with a shrinkage die shank through a bolt, a plurality of guide rod connecting holes are formed in the upper plate on the periphery of the shrinkage die shank, a lower die corresponding to the guide rod connecting holes is provided with a lower die guide rod connecting hole with the same number, a pushing plate corresponding to the lower die guide rod connecting hole is formed in a pushing plate corresponding to the lower die guide rod connecting hole, the guide rod sequentially penetrates through the pushing plate, the lower die and the upper plate and is fixed above the upper plate through the nut, so that the moving mechanism is connected with a lower die unit into a whole, the center of the pushing plate is connected with the positioning pushing rod which extends upwards through the bolt, the pushing plate is arranged below the lower die, the upper end face of the pushing plate is abutted against the lower end face of the lower die when the moving mechanism is installed, and the top end of the positioning pushing rod stretches into a variable-diameter channel of the female die;

Further, in the motion mechanism, the upper plate is fixed with the guide rod, the pushing plate is fixed with the guide rod, and the guide rod slides in the connecting hole of the guide rod of the lower die;

Further, the limit height of the positioning pushing rod extending into the concave die reducing channel is slightly lower than the integral height of the concave die reducing channel;

Further, the positioning pushing rod is a straight rod body with the same upper and lower diameters, the lower section of the positioning pushing rod is in clearance fit with the small-diameter area section of the female die reducing channel, the upper section of the positioning pushing rod and the large-diameter area section of the female die reducing channel form an annular accommodating gap, and the accommodating gap is used for accommodating an oil pipe;

Further, the female die and the lower die in the lower die unit are in a combined embedded design;

further, the positioning pushing rod and the pushing plate are of a detachable combined structure, the bottom of the positioning pushing rod is of a T-shaped structure and is provided with a bolt connecting hole, a T-shaped groove matched with the T-shaped structure at the bottom of the positioning pushing rod is formed in the pushing plate, and a through hole for the penetration of a bolt is formed in the T-shaped groove corresponding to the position of the bolt hole at the bottom of the positioning pushing rod;

Further, the locating rod units are two locating rods which are arranged horizontally by 180 degrees, and the setting positions of the two locating rods on the lower die and the guide rods are distributed in a staggered mode and are fixedly connected on the lower die through bolts.

The core of the scheme is that the positioning pushing rod in the mould movement mechanism is skillfully designed, the positioning pushing rod is in different movement states in the loading process and the unloading process of a product (oil pipe) to realize different effects, namely, a product accommodating space is formed by the positioning pushing rod and a female die during product loading, the positioning pushing rod in the process plays the roles of guiding and positioning the product, and a positioning rod is formed at the moment, and the positioning pushing rod plays the role of unloading in the unloading process, and at the moment, the unloading rod is formed.

The beneficial effect of adopting this scheme's oil pipe throat mould is:

The original end machine working procedure is converted into the punching necking working procedure by utilizing the clamping fixture, the clamping fixture in the necking mode has the advantages of simple structural principle, easiness in operation, capability of reducing the working difficulty, capability of ensuring stable product positioning in the processing process, capability of ensuring the surface roughness of the processed product, convenience in replacing the clamping fixture parts, capability of reducing the overall loss of the clamping fixture and prolonging the service life of the clamping fixture, thereby improving the processing efficiency of the product.

Drawings

FIG. 1 is a block diagram of an embodiment of a tubing punch necking die of the present utility model (uninstalled product).

Fig. 2 is a partial cross-sectional view of fig. 1.

Fig. 3 is a schematic diagram of a state in which a female die is put into a product according to an embodiment of the present utility model.

Fig. 4 is a cross-sectional view of a state in which the female die is put into a product.

Fig. 5 is a schematic diagram of a punching state according to an embodiment of the present utility model.

Fig. 6 is a cross-sectional view of a punched state.

Fig. 7 is a schematic diagram of a material returning state according to an embodiment of the utility model.

Fig. 8 is a cross-sectional view of the reject state.

Fig. 9 is a schematic diagram of a finished product taking state of oil pipe necking processing according to an embodiment of the present utility model.

Fig. 10 is a sectional view of the oil pipe in a finished product state after necking.

FIG. 11 is a schematic view of the assembly structure of the mold and the table of the present utility model.

In the figure, 1, a shrinkage pipe die handle, 2, an upper running space, 3, a lower running space, 4, a pipe fitting, 5, a positioning rod, 6, a lower die, 7 and a female die;

71. a T-shaped extension table of the female die, a large-diameter area section, a small-diameter area section and a bevel transition area;

8. The device comprises an upper plate, 9, a pushing plate, 10, a positioning pushing rod, 11, a guide rod, 12, nuts, 13, an upper opening position of an accommodating space, 14, a workbench, 15, a pressing plate, 16 and bolts.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

The structure of the oil pipe punching necking mould comprises a lower mould unit and a movement mechanism penetrating through the lower mould unit, wherein the movement mechanism positioned above the lower mould unit is connected with a power device through a shrinkage die handle 1, an upper operation space 2 and a lower operation space 3 of the mould are respectively formed above and below the lower mould unit by taking the lower mould unit as a boundary, a pipe fitting 4 is arranged in the upper operation space 2 positioned above the lower mould unit, and the movement mechanism is driven to move up and down under the power action of the power device so as to realize necking punching of the pipe fitting 4 (oil pipe);

The power device adopts a press machine which is matched and connected with the top of the shrinkage die shank 1, and the specific connection mode is that the structure of the part is omitted in the conventional connection drawing;

The upper running space 2 of the clamping fixture is internally provided with a positioning rod unit, the positioning rod unit is two positioning rods 5 which are horizontally arranged at 180 degrees, the arrangement positions of the two positioning rods 5 on the lower die 6 are staggered with the guide rods 11 of the moving mechanism and are fixedly connected to the lower die 6 through bolts;

The lower die unit comprises a lower die 6 with a circular boss structure and a female die 7 embedded in the lower die 6, wherein the female die 7 is of a T-shaped cross section structure, the outer diameter of the female die 7 is matched with the inner diameter of the lower die 6, the female die 7 is matched and clamped in the lower die 6, the body part of the female die 7 is embedded in the cavity of the lower die 6, a T-shaped extension table 71 of the female die is arranged on the upper surface of the edge of the cavity of the lower die 6, a reducing channel is arranged in the center of the female die 7, the reducing channel penetrates through the whole height of the female die 7 from top to bottom, the upper part of the reducing channel is a large-diameter area section 72, the lower part of the reducing channel is a small-diameter area section 73, an inclined surface transition area 74 is formed at the joint of the large-diameter area section 72 to the small-diameter area section 73, and the inner shape of the reducing channel of the female die 7 is used for forming the outer contour of an oil pipe necking product;

The female die 7 which is arranged on the lower die 6 in a clamped manner is provided with a protruding part relative to the upper surface of the lower die 6;

The motion mechanism comprises an upper plate 8, a pushing plate 9, a positioning pushing rod 10, a guide rod 11 and a nut 12, wherein the upper plate 8 is connected with a shrinkage die shank 1 through bolts, a plurality of guide rod connecting holes are formed in the upper plate 8 at the periphery of the shrinkage die shank 1, a lower die 6 corresponding to the positions of the guide rod connecting holes is provided with a same number of lower die guide rod connecting holes, a pushing plate 9 corresponding to the positions of the lower die guide rod connecting holes is provided with a corresponding number of pushing plate guide rod connecting holes, the guide rod 11 sequentially penetrates through the pushing plate 9, the lower die 6 and the upper plate 8 and is fixed above the upper plate 8 through the nut 12, so that the motion mechanism is connected with a lower die unit into a whole, the center of the pushing plate 9 is connected with the positioning pushing rod 10 extending upwards through bolts, the pushing plate 9 is arranged below the lower die 6, the upper end surface of the pushing plate 9 is abutted against the lower end surface of the lower die 6, and the top end of the positioning pushing rod 10 extends into a variable-diameter channel of a female die 7 when the lower die is installed;

based on the scheme, the lower die unit is used as a fixed reference, and is fixedly connected to the workbench 14 through the lower die 6, the workbench 14 is provided with a mounting hole matched with the bottom specification of the lower die 6, the lower die 6 is arranged in the mounting hole, the lower surface of a circular boss at the upper part of the lower die 6 is clamped on the upper surface of the workbench 14, the upper surface of the circular boss of the lower die is fixedly connected with the workbench 14 through a pressing plate 15 and a bolt 16, the specific structure is shown in fig. 11, the guide rod 11 slides up and down in the guide rod connecting hole of the lower die, and synchronously moves together with the upper plate 8 at the upper end and the pushing plate 9 at the lower end of the guide rod 11, and simultaneously, the upper and lower movement of the pushing plate 9 enables the positioning pushing rod 10 connected to the pushing plate 9 to move along with the upper and lower movement of the pushing rod 10;

The limit height of the positioning pushing rod 10 extending into the reducing channel of the female die is slightly lower than the integral height of the reducing channel of the female die 7;

The positioning pushing rod 10 is a straight rod body with the same upper and lower diameters, the lower section of the positioning pushing rod 10 is in clearance fit with the small-diameter area section 73 of the reducing channel of the female die 7, and the upper section of the positioning pushing rod 10 and the large-diameter area section 72 of the reducing channel of the female die 7 form an annular accommodating gap which is used for accommodating the pipe fitting 4 (oil pipe);

Based on the scheme, the wall thickness of the oil pipe which is not reduced initially can be just contained in a containing space between the positioning pushing rod 10 and the female die 7 and is filled in from the upper opening position 13 of the containing space, so that the oil pipe is sleeved on the positioning pushing rod 10, and the positioning pushing rod 10 plays a role in positioning and guiding in the process of filling the pipe fitting 4, so that the oil pipe is ensured to be in a vertical state in the stamping process, and the oil pipe is prevented from deflecting;

In this embodiment, the number of the guide rods 11 in the motion mechanism is set to be 4 and is uniformly distributed in the whole mould, so as to ensure the overall stability of the mould;

Preferably, the number of bolts for fixedly connecting the shrinkage die shank 1 with the upper plate 8 is set to be 4;

the female die 7 and the lower die 6 in the lower die unit are in combined embedded design, so that the female die 7 is convenient to replace, and the female die 7 is convenient to consume or needs to process oil pipes with different specifications to replace female die specifications matched with the female die 7, so that the female die has certain universality;

The positioning pushing rod 10 and the pushing plate 9 are of a detachable combined structure, the bottom of the positioning pushing rod 10 is of a T-shaped structure and is provided with a bolt connecting hole, a T-shaped groove matched with the T-shaped structure at the bottom of the positioning pushing rod 10 is formed in the pushing plate 9, a through hole for penetrating a bolt is formed in the T-shaped groove corresponding to the bolt hole at the bottom of the positioning pushing rod 10, during installation, the bottom of the positioning pushing rod 10 is embedded into the T-shaped groove of the pushing plate 9, and the positioning pushing rod 10 is screwed into and connected to the bolt connecting hole at the bottom of the positioning pushing rod 10 through the bolt, so that the installation of the pushing plate 9 and the positioning pushing rod 10 is realized, and the positioning pushing rod 10 is convenient to replace at any time based on the combined assembly design of the positioning pushing rod 10 and the pushing plate 9.

The specific stamping method based on the structural mold comprises the following steps:

1) Product installation

The punch connected with the mould top shrinkage die shank 1 drives a moving mechanism to move upwards, the moving mechanism moves upwards to enable an upper plate 8, each guide rod 11 and a pushing plate 9 connected with the guide rods 11 to move upwards, and the moving mechanism moves upwards relative to a lower die unit in the moving process so as to enlarge the upper running space 2 of the mould and enlarge the space of the mould;

The height of the upper running space 2 is based on that the pipe 4 can be placed into the die 7 at least from the height position of the surface of the protruding part formed on the lower die 6 by the die 7, and at the same time, the positioning pushing rod 10 in the moving mechanism moves along with the pushing plate 9 to enable the pushing plate to be in a state of extending into the reducing channel of the die 7, so as to form an accommodating space of the pipe 4;

the state of the pipe fitting 4 after being put into the concave die reducing channel is that the lower end part of the pipe fitting 4 extends to the position of the large-diameter area section 72 of the concave die reducing channel close to the inclined plane transition area 74 and can only reach the position, so that the pipe fitting 4 is sleeved at the upper end of the positioning pushing rod 10;

2) Stamping

The punching machine drives the moving mechanism to move downwards to punch the pipe 4, and in the moving mechanism moving downwards, the upper running space 2 of the mould is gradually reduced, the lower running space 3 of the mould is gradually increased, the material pushing plate 9 is gradually far away from the lower mould unit, and finally the pipe 4 is pressed and formed in the reducing channel of the female mould 7, so that the shrinkage of the pipe 4 is realized;

it should be noted that, in a period of travel in which the movement mechanism starts to press down, the upper plate 8 does not generate a pressing force on the pipe 4, but in the period of travel in which the movement mechanism moves down, the pushing plate 9 moves down and the positioning pushing rod 10 moves down together, so that the positioning pushing rod 10 moves to a large diameter area 72 of the reducing channel of the die 7, where the top end of the positioning pushing rod is separated from the small diameter area 73 of the reducing channel, that is, when the upper plate 8 of the movement mechanism presses down to generate a force on the pipe 4, the positioning pushing rod 10 is moved to the small diameter area 73 of the reducing channel of the die 7;

3) Material returning

The lower end of the punched pipe fitting 4 is pressed into a small-diameter section 73 of the reducing channel of the female die 7, the diameter of the lower part of the pipe fitting 4 in the state is the same as that of the positioning pushing rod 10, and the moving mechanism is driven to move upwards by the upward movement of the punching machine, so that the top end face of the positioning pushing rod 10 is propped against the lower end face of the pipe fitting 4 in the small-diameter section 73 of the reducing channel of the female die 7, and the pipe fitting 4 is propped upwards.

4) Taking a finished product

When the pipe 4 in the step 3) is propped up to the end face of the lower end, leaves the small diameter area 73 of the reducing channel of the female die 7 and is positioned in the large diameter area 72 of the reducing channel of the female die 7, the pipe 4 is continuously moved upwards to a proper position by manually supporting the pipe 9, the pipe 4 is taken out of the female die 7 preferably at the height of the upper running space of the clamping fixture, the whole oil pipe punching necking work is completed, the pipe 4 is taken out, the pipe 9 to be pushed up to the extreme limit is moved up, the moving mechanism of the clamping fixture is restored to the original state when the upper end face of the pushing plate 9 is completely attached to the lower end face of the lower die unit, the next oil pipe can be processed at the moment, and the processing mode is repeated.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interaction relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Claims (8)

1. The oil pipe punching necking mould is characterized by comprising a lower mould unit and a movement mechanism penetrating through the lower mould unit, wherein the movement mechanism positioned above the lower mould unit is connected with a power device through a shrinkage mould handle, an upper operation space and a lower operation space of the mould are respectively formed above and below the lower mould unit by taking the lower mould unit as a boundary, and a pipe fitting is arranged in the upper operation space positioned above the lower mould unit;

The lower die unit comprises a lower die with a circular boss structure and a female die embedded in the lower die, wherein the female die is of a T-shaped cross section structure, the outer diameter of the female die is matched with the inner diameter of the lower die, the female die is matched and clamped in the lower die, the body part of the female die is embedded in the cavity of the lower die, the T-shaped extension table of the female die is erected on the upper surface of the edge of the cavity of the lower die, the center of the female die is provided with a reducing channel, the reducing channel penetrates through the whole height of the female die from top to bottom, the upper part of the reducing channel is a large-diameter area section, the lower part of the reducing channel is a small-diameter area section, and an inclined plane transition area is formed at the joint of the large-diameter area section to the small-diameter area section;

the motion mechanism comprises an upper plate, a pushing plate, a positioning pushing rod, a guide rod and a nut;

The guide rod sequentially penetrates through the material pushing plate, the lower die and the upper plate and is fixed above the upper plate through nuts, so that the movement mechanism is connected with the lower die unit into a whole, the center of the material pushing plate is connected with a positioning material pushing rod which extends upwards through bolts, the material pushing plate is arranged below the lower die, the upper end face of the material pushing plate is abutted against the lower end face of the lower die when the guide rod is installed, the top end of the positioning material pushing rod extends into a reducing channel of the female die, the positioning material pushing rod is a straight rod body with the same upper and lower diameters, the lower section of the positioning material pushing rod is in clearance fit with the small-diameter area section of the reducing channel of the female die, and the upper section of the positioning material pushing rod and the large-diameter area section of the reducing channel of the female die form an annular accommodating gap;

The positioning pushing rod forms a product accommodating space with the female die when the product is loaded, so that the positioning pushing rod becomes a positioning rod, and the positioning pushing rod forms a material returning rod in the material returning process of the product.

2. The oil pipe stamping necking mould of claim 1, wherein the power device is a press, and the press is matched and connected with the top of the shrinkage die shank.

3. The oil pipe stamping necking die of claim 1, wherein the female die which is clamped on the lower die is provided with a protruding portion relative to the upper surface of the lower die.

4. The oil pipe stamping necking mould of claim 1, wherein the upper plate is connected with the shrinkage die shank through bolts, a plurality of guide rod connecting holes are formed in the upper plate on the periphery of the shrinkage die shank, the lower dies corresponding to the guide rod connecting holes are provided with the same number of lower die guide rod connecting holes, and the pushing plates corresponding to the lower die guide rod connecting holes are provided with the corresponding number of pushing plate guide rod connecting holes.

5. The oil pipe stamping necking die of claim 4, wherein in the moving mechanism, an upper plate and a guide rod are fixed, a pushing plate and the guide rod are fixed, and the guide rod slides in a connecting hole of a guide rod of a lower die.

6. The oil pipe stamping necking die of claim 1 wherein the limiting height of the positioning pushing rod extending into the die reducing channel is lower than the integral height of the die reducing channel.

7. The oil pipe stamping necking die of claim 1, wherein the female die and the lower die in the lower die unit are of a combined embedded design.

8. The oil pipe stamping necking mould of claim 1, wherein the positioning pushing rod and the pushing plate are of a detachable combined structure, the bottom of the positioning pushing rod is of a T-shaped structure and provided with a bolt connecting hole, the pushing plate is provided with a T-shaped groove matched with the T-shaped structure at the bottom of the positioning pushing rod, and the T-shaped groove is provided with a through hole for a bolt to penetrate through corresponding to the position of a bolt hole at the bottom of the positioning pushing rod.