CN214818233U

CN214818233U - Oil bag double-action pressing die

Info

Publication number: CN214818233U
Application number: CN202120054582.7U
Authority: CN
Inventors: 董强; 祝新荣
Original assignee: Hangzhou Dc Energy Equipment Co ltd
Current assignee: Hangzhou Dc Energy Equipment Co ltd
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2021-11-23
Anticipated expiration: 2031-01-08

Abstract

The utility model discloses an oil bag double-acting pressing die, which is used for pressing an oil bag in a machine barrel, and comprises a pre-pressing connecting plate and a pressing shaft fixed on the pre-pressing connecting plate, wherein the lower end of the pressing shaft is provided with an inner pressing die, the pressing shaft is also provided with an outer die sleeved outside the inner pressing die, the lower end of the outer die is provided with a horn mouth expanding downwards and outwards, the horn mouth is matched with the upper end of the oil bag, the outer die and a pressing shaft bracket are provided with a guide part, the guide part is fixedly arranged with the outer die, and the guide part is arranged with the pressing shaft in a sliding way; and a return spring is arranged between the outer die and the pre-pressing connecting plate. The utility model has the advantages that can accomplish the oil pocket forced lubrication, accomplish through interior moulding-die and external mold relative slip and send the oil pocket action, prevent that the card of oil pocket upper end is dead or damage, realize impressing smoothly of oil pocket, improve the efficiency of impressing of oil pocket.

Description

Oil bag double-action pressing die

Technical Field

The application relates to the technical field of deep-well pump oil bag presses, in particular to an oil bag re-acting pressing die.

Background

The oil bag is a device for adjusting the balance of internal and external pressure, and can ensure the normal operation of a motor in the submersible pump. For example, in chinese patent literature, the utility model discloses a special benefit of 7.7.7.2020 of granted bulletin No. CN 210949286U discloses an oil pocket structure of submersible deep-well pump, including motor casing, a pedestal, the bottom has oil pocket and the bearing frame of cavity, the base upper end is provided with first cyclic annular flange, its inner wall hugs closely in the outer wall of first cyclic annular flange after oil pocket cover locates first cyclic annular flange, the base lower extreme still is provided with the through-hole that accesss to the oil pocket cavity, there is the radial outside annular that sets up on the oil pocket lower extreme outer wall to keep off the seat, annular keeps off seat outer fringe department and is provided with the second cyclic annular flange, the bearing frame includes the bearing housing, the annular pedestal that is located the bearing housing below and is used for connecting the splice bar of the two, the annular groove has been seted up to the lower extreme of annular pedestal, after the annular pedestal cover was located on the oil pocket, the second cyclic annular flange inlays and locates in the annular groove.

In the prior art, an oil sac is pressed into a machine barrel usually by an integral single-block pressing die, but the opening of the machine barrel is narrowed, is relatively sharp and is not beneficial to assembly, the oil sac is soft, has tension and is difficult to be loaded into the machine barrel by simple actions, the oil sac is easy to be stuck on an acute angle due to overlarge pressure to damage, the existing oil sac pressing machine is low in working efficiency, and the qualified rate of finished products is low.

Disclosure of Invention

Based on above-mentioned not enough among the prior art, the utility model provides an oil pocket rerailing moulding-die can accomplish the oil pocket pressure feed, accomplishes the action of sending the oil pocket through interior moulding-die and external mold relative slip, prevents that the card of oil pocket upper end is dead or damage, realizes impressing smoothly of oil pocket, improves the efficiency of advancing of oil pocket.

In order to achieve the above object, the present application adopts the following technical solutions.

An oil sac double-acting pressing die is used for pressing an oil sac in a machine barrel and comprises a pre-pressing connecting plate and a pressing shaft fixed on the pre-pressing connecting plate, wherein an inner pressing die is arranged at the lower end of the pressing shaft, an outer die sleeved on the outer side of the inner pressing die is further arranged on the pressing shaft, a horn mouth expanding downwards and outwards is arranged at the lower end of the outer die, the horn mouth is matched with the upper end of the oil sac, guide parts are arranged on an outer die and a pressing shaft support, the guide parts are fixedly arranged with the outer die, and the guide parts are arranged with the pressing shaft in a sliding mode; and a return spring is arranged between the outer die and the pre-pressing connecting plate.

The outer die is used for pressing the oil sac downwards, when the oil sac stops descending, the bell mouth can force the oil sac to gather inwards, a part of the oil sac is separated from the outer wall to be pressed in conveniently, the part of the oil sac which can not descend can gather inside the outer die, the outer die stops descending after being fully contacted with the machine barrel, and meanwhile, the oil sac can gather to a proper position; the inner pressing die can slide downwards at the moment, the gathered oil sac is smoothly sent into the machine barrel, and the oil sac is smoothly pressed in; the reset spring is a compression spring, and in a natural state, the outer die is positioned at the lowest position which can be reached on the pressing shaft, so that the outer die is ensured to contact the oil bag earlier than the inner pressing die, a reliable gathering effect is achieved, and the pressing efficiency of the oil bag is improved.

Preferably, the guide part adopts a detachable structure, and further, the guide part adopts a guide sleeve. The guide sleeve plays a role in guiding and resisting abrasion, can be used as a shaft sleeve, and improves the structural reliability of the outer die; the guide sleeve can adopt a copper sleeve, a composite guide sleeve, a ball guide sleeve and the like.

Preferably, the lower end of the outer die can extend to the lower part of the inner pressing die, a limiting hole matched with the inner pressing die is formed in the outer die, and the bell mouth is located at the lower end of the limiting hole. The inner pressing die can slide in the limiting hole and is matched with the horn mouth, and reliable pressing of the oil bag is achieved.

Preferably, the bell mouth comprises three sections of continuously arranged round table surfaces, and the middle part of the round table surface at the middle section corresponds to the upper end of the oil sac; the cone angles of the round table tops at the two ends are equal, and the cone angle of the round table top at the middle section is larger than the cone angles of the round table tops at the two ends. The round table top can play reliable distance effect, especially the round table top cone angle of interlude is great, and when interlude round table top and the cooperation of oil pocket upper end, the round table top and the barrel cooperation of hypomere form the different distance cooperation effect of two gradients, guarantee that the oil pocket gathers together the reliability of pushing down.

Preferably, a transition fillet is arranged between the adjacent round table surfaces. Smooth and smooth transition between round table surfaces is realized by the arrangement of the transition fillets, the safety of the horn mouth during pressing of the oil sac is improved, and the upside of the oil sac is effectively prevented from being damaged.

Preferably, the two ends of the bell mouth are round table surfaces with equal cone angles, a limiting ring surface is arranged between the two round table surfaces, the cross section of the limiting ring surface is in the shape of an upward convex arc, and the limiting ring surface and the two round table surfaces are in smooth transition. By arranging the limiting ring surface, the smooth stress surface can be ensured after the outer die is contacted with the oil bag, the surface of the oil bag cannot be damaged, the pressing and gathering effects can be improved, and the pressing efficiency of the oil bag is improved; in addition, the outer pressing die can be matched with the machine barrel conveniently through the arrangement of the circular table top and the limiting ring surface, the upper end of the machine barrel is prevented from being in contact extrusion deformation, contact dead angles are eliminated, and the structural reliability of the upper end of the machine barrel is improved.

Preferably, a transition round angle is arranged between the lower end of the bell mouth and the outer die. The matching of the external mold, the machine barrel and the oil bag is convenient, and the balanced pressing and gathering capacity of the external mold is ensured.

Preferably, the upper end of the outer die is provided with a mounting table, the guide sleeve is embedded in the mounting table and the outer die, and the outer die is provided with a retaining shoulder matched with the guide sleeve. The stop shoulder improves the limiting capacity of the guide sleeve in the outer mold and the mounting table, and the size of the guide sleeve can be enlarged due to the mounting table, so that the sliding guiding capacity of the guide sleeve is improved, the reliability of relative sliding of the outer mold and the pressing shaft is ensured, and the pressing and gathering effects of the outer mold can be improved.

The utility model discloses following beneficial effect has: the oil bag pressing and conveying device can complete the pressing and conveying of the oil bag, and the oil bag conveying action is completed through the relative sliding of the inner pressing die and the outer die, so that the upper end of the oil bag is prevented from being clamped or damaged, the oil bag is smoothly pressed in, and the pressing efficiency of the oil bag is improved.

Drawings

Fig. 1 is a schematic structural view of the present invention in cooperation with an oil sac and a cylinder.

Fig. 2 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 3 is an enlarged schematic view at a in fig. 2.

Fig. 4 is a schematic structural diagram of a second embodiment of the present invention.

Fig. 5 is an enlarged schematic view at B in fig. 4.

In the figure: the horn mouth 31 of the outer die 3 of the oil sac 2 of the machine barrel 1 is provided with a circular table surface 32, a limit ring surface 33, a shoulder 34, a guide sleeve 4, a pressing die 5, a pressing shaft 6, a return spring 7 and a prepressing connecting plate 8.

Detailed Description

The invention is further illustrated with reference to the accompanying drawings and specific embodiments.

In the case of the example 1, the following examples are given,

an oil sac double-acting pressing die is used for pressing an oil sac 2 in a machine barrel 1 and comprises a pre-pressing connecting plate 8 and a pressing shaft 6 fixed on the pre-pressing connecting plate 8, an inner pressing die 5 is arranged at the lower end of the pressing shaft 6, the pre-pressing connecting plate 8 is fixed at the upper end of the pressing shaft 6 through screws, and the pre-pressing connecting plate 8 can be connected with a power pressing mechanism such as a pressing cylinder. The inner die 5 is fixed to the lower end of the pressing shaft 6 by screws. The pressing shaft 6 is further provided with an outer die 3 sleeved outside the inner pressing die 5, the lower end of the outer die 3 is provided with a horn mouth 31 expanding downwards and outwards, the horn mouth 31 is matched with the upper end of the oil bag 2, the outer die 3 and the pressing shaft 6 are provided with a guide piece, and the guide piece is a guide sleeve 4. The guide piece and the outer die 3 are fixedly arranged in a bonding mode, and the guide piece and the pressing shaft 6 are arranged in a sliding mode; the guide sleeve 4 is in clearance fit with the pressing shaft 6. The upper end of the outer die 3 is provided with a mounting table, the guide sleeve 4 is embedded in the mounting table and the outer die 3, and the outer die 3 is provided with a retaining shoulder 34 matched with the guide sleeve 4. A clearance exists between the shoulder 34 and the pressing shaft 6. And a return spring 7 is arranged between the outer die 3 and the prepressing connecting plate 8. The return spring 7 is a compression spring. The lower end of the outer die 3 can extend out of the lower part of the inner pressing die 5, a limiting hole matched with the inner pressing die 5 is formed in the outer die 3, and the bell mouth 31 is located at the lower end of the limiting hole. The upper end and the lower end of the bell mouth 31 are respectively provided with a circular table surface 32 with the same cone angle, and the circular table surface 32 at the upper end is positioned in a cone surface formed by extending the circular table surface 32 at the lower end; a limiting ring surface 33 is arranged between the two circular table surfaces 32, the cross section of the limiting ring surface 33 is in the shape of an upward convex circular arc, and the limiting ring surface 33 and the two circular table surfaces 32 are in smooth transition. A transition fillet is arranged between the lower end of the bell mouth 31 and the outer die 3.

In the case of the example 2, the following examples are given,

an oil sac 2 double-acting pressing die, wherein the difference between the embodiment 2 and the embodiment 1 is that: as shown in fig. 4 and 5, the bell mouth 31 includes three continuously arranged circular table surfaces 32, and the middle part of the circular table surface 32 in the middle section corresponds to the upper end of the oil bag 2; the cone angles of the round table tops 32 at the two ends are equal, and the cone angle of the round table top 32 at the middle section is larger than the cone angles of the round table tops 32 at the two ends. Transition fillets are arranged between the adjacent round table surfaces 32.

Taking the embodiment 1 as an example, when the oil bag pressing device is used, the outer die 3 presses the oil bag 2 downwards, when the oil bag 2 stops descending, the bell mouth 31 forces the oil bag 2 to gather inwards, so that a part of the upper end of the oil bag 2 is separated from the outer wall of the machine barrel 1 to be pressed in conveniently, the part, which cannot descend, of the oil bag 2 gathers inside the outer die 3, the outer die 3 stops descending after being in full contact with the machine barrel 1, and meanwhile, the oil bag 2 also gathers to a proper position; the inner pressing die 5 slides downwards at the moment, the gathered oil sac 2 is smoothly sent into the machine barrel 1, and the oil sac 2 is smoothly pressed in; the reset spring 7 is a compression spring, and in a natural state, the outer die 3 is positioned at the lowest position which can be reached on the pressing shaft 6, so that the outer die 3 is ensured to contact the oil bag 2 earlier than the inner pressing die 5, a reliable gathering effect is achieved, and the pressing efficiency of the oil bag 2 is improved.

Claims

1. An oil sac double-acting pressing die is characterized by being used for pressing an oil sac in a machine barrel and comprising a pre-pressing connecting plate and a pressing shaft fixed on the pre-pressing connecting plate, wherein an inner pressing die is arranged at the lower end of the pressing shaft, an outer die sleeved on the outer side of the inner pressing die is further arranged on the pressing shaft, a horn mouth expanding downwards and outwards is arranged at the lower end of the outer die, the horn mouth is matched with the upper end of the oil sac, guide parts are arranged on an outer die and a pressing shaft support, the guide parts are fixedly arranged with the outer die, and the guide parts are arranged with the pressing shaft in a sliding manner; and a return spring is arranged between the outer die and the pre-pressing connecting plate.

2. The oil sac double action die as claimed in claim 1, wherein said guide member is a guide bush.

3. The oil sac double acting press die as claimed in claim 1, wherein the lower end of the outer die can extend below the inner press die, a limiting hole matched with the inner press die is formed in the outer die, and the bell mouth is located at the lower end of the limiting hole.

4. The oil sac double acting press die according to claim 1 or 3, wherein the bell mouth comprises three continuously arranged circular table surfaces, and the middle part of the circular table surface at the middle section corresponds to the upper end of the oil sac; the cone angles of the round table tops at the two ends are equal, and the cone angle of the round table top at the middle section is larger than the cone angles of the round table tops at the two ends.

5. The oil sac re-acting press die of claim 4, wherein transition fillets are arranged between the adjacent round table surfaces.

6. The oil sac double acting press die as claimed in claim 1 or 3, wherein the two ends of the bell mouth are round table surfaces with equal cone angles, a limiting ring surface is arranged between the two round table surfaces, the cross section of the limiting ring surface is in the shape of an upward convex circular arc, and the limiting ring surface and the two round table surfaces are in smooth transition.

7. An oil sac re-acting press die as claimed in claim 1 or 3, wherein a transition fillet is provided between the lower end of the bell mouth and the outer die.