CN220049691U - Vertical expansion die for end ring of water pump - Google Patents

Abstract

The utility model belongs to the field of dies, and particularly relates to a vertical expansion die for a water pump end ring, which comprises: the device comprises a male die, a female die, a male die fixing device, a female die fixing device and a workpiece limiting mechanism, wherein the male die comprises a working part and a connecting part; the male die fixing device comprises an upper die seat, a male die connecting ring, a discharging assembly and a guiding assembly; the female die fixing device comprises a lower die holder and a connecting component for connecting the lower die holder with the female die; the utility model realizes the purpose of expanding the small-size end ring through the design of the mould, simultaneously considers the problems that the workpiece is offset possibly occurring in the expanding process and the workpiece is inconvenient to detach after the expansion is finished, embodies the practicability of the specific structure of the utility model, saves the manufacturing requirement of the multi-size mould, reduces the saturated casting process of the end ring with each size, and contributes to the environmental protection and the reasonable and effective utilization of resources.

Description

Vertical expansion die for end ring of water pump

Technical Field

The utility model belongs to the field of molds, and particularly relates to a vertical expansion mold for a water pump end ring.

Background

The end ring of the water pump has the function of causing a narrow and tortuous passage between the impeller and the pump shell to increase the flow resistance of liquid and fulfill the aim of reducing liquid leakage; the arrangement of the end ring of the water pump also plays a role in protecting the primary parts of the pump from being worn out, and after the end ring is worn out, the correct assembly clearance can be recovered by repairing or replacing a new ring, so that the end ring of the water pump continuously plays a role in protecting the primary parts of the water pump, and in this way, the end ring of the water pump is used as an important consumable for various water pumps.

The existing end ring of the water pump is usually manufactured in a casting mode, and the sizes of the water pump are various, so that the sizes of the end ring of the water pump are various correspondingly, various moulds with different sizes are required to be manufactured in the casting process of the end ring, and the manufacturing of various moulds is also a great resource consumption; in addition, because the demand and the demand time of the customer for the end rings with different sizes are uncertain, the factory performs saturated casting on the end rings with different sizes, the consumed speed of the end rings with different sizes is different after the end rings with different sizes are cast, even the end rings with different sizes are not needed for a long time, the end rings with different sizes are wasted due to the fact that the end rings with different sizes are not matched with water pumps, and finally, the resource is wasted, and when the end rings with different sizes are cast, serious pollution is caused to the environment due to the process characteristics of casting per se;

how to reduce the manufacturing of grinding tools for end rings and the casting of end rings with unusual dimensions in a form of reasonably utilizing end rings with various dimensions, so as to further realize the saving of resources and the protection of the environment is a problem to be solved in the technical field of the current mould.

Disclosure of Invention

In view of the above, the utility model aims to provide a vertical expansion die for a water pump end ring, which aims to solve the problem that the cast end ring in the prior art cannot be used in an intercommunication way, so that resource waste is caused.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

a vertical expansion die for a water pump end ring, comprising:

the lower part of the male die is provided with a stepped working part, the working part comprises a small-diameter part and a large-diameter part, the small-diameter part and the large-diameter part are excessively connected through an inclined plane, and the upper part of the male die is provided with a connecting part;

the female die is sleeved on the outer side of the large-diameter part of the male die, and the female die expands and pushes a workpiece which is arranged in the small-diameter part in advance to the large-diameter part through the matching of the female die and the large-diameter part, so that the expansion action of the workpiece is completed;

the male die fixing device comprises a male die connecting ring, and the male die connecting ring is detachably connected with the connecting part of the male die through a first cylindrical pin;

the die fixing device comprises a lower die holder, wherein the lower die holder is connected with the die through a connecting component, and is used for limiting the die and limiting the movement of the die in any direction;

and the workpiece limiting mechanisms are arranged on the female die and are used for limiting the workpieces in the whole working process of the vertical expansion die.

Preferably, the male die fixing device further comprises an upper die holder, a base plate is arranged below the upper die holder, a male die retainer ring is arranged below the base plate, meanwhile, the male die retainer ring is sleeved outside the male die connecting ring, the upper die holder, the base plate and the male die retainer ring are connected in a positioning mode through a plurality of second cylindrical pins, and on the basis, the male die retainer ring is matched with the male die connecting ring to realize synchronous movement of the male die and the male die fixing device;

in addition, the lower part of the male die fixing device is connected with a discharging assembly through a discharging screw, and the discharging assembly is used for conveniently taking the workpiece off the male die after the expansion action of the workpiece is completed.

Further, the unloading screw is an incomplete screw, namely a screw rod of the unloading screw is a smooth screw rod, one end of the screw rod is provided with partial threads, the other end of the screw rod is provided with a screw cap, and the smooth screw rod part of the unloading screw simultaneously and smoothly passes through the upper die holder, the base plate and the male die retainer ring from top to bottom; on the basis, a plurality of discharging screws are arranged and are uniformly distributed along the circumference of the male die retainer ring;

the discharging assembly further comprises a discharging gasket, the discharging gasket is in threaded connection with a part of the discharging screw through a threaded hole, a first spring is sleeved on the discharging screw, and the first spring is located between the male die retainer ring and the discharging gasket.

Preferably, the male die fixing device further comprises two groups of guide components, the two groups of guide components are symmetrically arranged on the upper die holder, each group of guide components comprises a guide column for connecting the upper die holder and the lower die holder, guide holes and receiving holes respectively arranged on the upper die holder and the lower die holder, and when the vertical expansion die works, the male die fixing device and the male die realize accurate pressing action under the limiting and guiding actions of the guide components.

Preferably, in the die fixing device, the connecting component includes a plurality of first screws and third cylindrical pins connecting the lower die holder with the die, and the plurality of first screws and the plurality of third cylindrical pins are uniformly arranged on the die.

Preferably, on the female die, a plurality of groups of workpiece limiting mechanisms are uniformly arranged on the outer circumferential end surface of the female die, wherein each group of workpiece limiting mechanisms comprises a positioning clamp, the lower part of the positioning clamp is connected with the female die through two second screws, and at the moment, the upper part of the positioning clamp is higher than the upper end surface of the female die in the horizontal position;

in addition, work piece stop gear still includes stop screw, stop screw is the incomplete screw equally, stop screw is located the upper portion of locator card, and follows the radial direction installation of terrace die, stop screw's smooth screw rod position is smooth to pass the locator card, stop screw's partial screw thread position is connected with the locating piece, on this basis, still the cover is equipped with the second spring on the stop screw, the second spring is located the locating piece with between the locator card.

Preferably, the male die is made of quenched T8 steel, and the female die is made of 45# steel.

The utility model has the beneficial effects that:

the utility model realizes the process of converting the small-size end ring into the large-size end ring by the mode of mutually matched extrusion of the male die and the female die, wherein the required end ring size is determined by the working part of the male die, namely the size of the final formed end ring is adjusted by manufacturing and adjusting the size of the working part of the male die, thereby embodying the practicability of the utility model;

the utility model sets up the fixing device for terrace die and die to realize spacing fixation to terrace die and die, on this basis, the utility model also has work piece spacing mechanism on die, used for the utility model carries on spacing to the work piece in carrying on the whole course from clamping to squeezing expansion shaping to the work piece, prevent it from because of squeezing the stress and taking place the position offset, thus cause the unsuccessful situation of work piece extrusion to take place;

the utility model provides a convenient detachment action for the workpiece sleeved on the large-diameter part of the working part of the male die after extrusion is finished through the unloading assembly arranged on the male die fixing device, thereby embodying the practicability of the utility model;

in general, the utility model realizes the purpose of expanding the small-size end ring through the specific design of the die structure, and simultaneously considers various situations possibly occurring in the expansion process, such as the offset of the workpiece and the problem that the workpiece is inconvenient to detach after the expansion is completed, thus embodying the practicability of the specific structure of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic elevational cut-away view of the present utility model;

FIG. 2 is a schematic top view of the die holder of the present utility model;

FIG. 3 is a schematic view of the diameter X and structure of the inner ring of the end ring workpiece of the original water pump in the utility model;

fig. 4 is a schematic diagram of the dimension and structure of the end ring workpiece of the water pump after expansion in the ideal state.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model; the terms "first," "second," "third," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally coupled, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The casting and the use of the end ring of the water pump in the prior art have the following defects: because the end ring of the water pump is used as a consumable part containing different sizes and is required by the water pump, most factories adopt a saturated casting method for the end rings with different sizes to meet the assault demands of clients, the consumed speeds of the end rings with different sizes are different, even the end rings with different sizes are not required for a long time, the end rings with different sizes in the cast end rings cannot be used in an intercommunicating way, and finally, the resource waste is caused; when the end rings with various sizes are cast, serious pollution to the environment can be caused due to the process characteristics of casting; the different-size end rings in the cast end rings cannot be used in an intercommunicating way, so that the problem of resource waste is caused.

In view of this, the utility model realizes the purposeful expansion of the small-sized end ring through the specific design of the mold structure, and simultaneously considers various situations possibly occurring in the expansion process, such as the offset of the workpiece and the inconvenience of disassembling the workpiece after the expansion is completed, thus embodying the practicability of the specific structure of the utility model.

The scheme provided by the utility model will be described in detail below with reference to the accompanying drawings.

In the technical scheme, as shown in fig. 1, a male die 1 is provided with a stepped working part at the lower part, wherein the working part comprises a small-diameter part 101 and a large-diameter part 102, the small-diameter part 101 and the large-diameter part 102 are excessively connected through an inclined plane, and a connecting part 103 is arranged at the upper part of the male die 1;

and the female die 2 is sleeved outside the large-diameter part 102 of the male die 1.

In this embodiment, the die 2 expands and pushes the workpiece previously placed on the small diameter portion 101 to the large diameter portion 102 according to the extrusion action of the punch 1 by being matched with the large diameter portion 102, so as to complete the expansion action of the workpiece; the male die 1 plays a vital role in the expansion process of the end ring of the water pump as a working part mainly providing expansion power, the quenched T8 steel material is adopted to enable the male die to have higher hardness and wear resistance, the female die 2 plays an important role in the expansion process of the end ring of the water pump as a limiting part playing a limiting and supporting role, and the 45# steel can effectively enable the male die to play a limiting role.

In the utility model, as the main core point of the die, the male die 1 can change the maximum size of the expansion end ring according to the change of the sizes of the small-diameter part 101 and the large-diameter part 102, and each size needs to be matched with one male die 1 and one female die 2.

In this technical solution, as shown in fig. 1, the punch fixing device 3 includes a punch connecting ring 301, where the punch connecting ring 301 and the connecting portion 103 of the punch 1 are detachably connected by a first cylindrical pin 302.

In this embodiment, no matter the size of the working part provided at the lower part of the male die 1, the connecting part at the upper part of the male die 1 is unchanged, and the male die 1 is installed on the male die connecting ring 301 through the cooperation of the first cylindrical pin 302 with the male die connecting ring 301 and the preset through hole on the connecting part and moves along with the male die connecting ring 301, so that when the end ring with other sizes is wanted, only the size of the working part of the male die 1 and the size of the female die 2 are required to be adjusted in a matching way, and the male die fixing device 3 is not required to be adjusted, thereby embodying the practicability of the utility model.

In addition, the male die fixing device 3 further comprises an upper die holder 303, a base plate 304 is arranged below the upper die holder 303, a male die retainer 305 is arranged below the base plate 304, meanwhile, the male die retainer 305 is further sleeved outside the male die connecting ring 301, and the upper die holder 303, the base plate 304 and the male die retainer 305 are in positioning connection through a plurality of second cylindrical pins 306.

It should be noted that the punch retainer 305 is configured to perform the synchronous movement of the punch 1 and the punch holder 3 by cooperating with the punch connecting ring 301, in this example, as shown in fig. 1, in such a way that the boss cooperates with the cavity to perform the synchronous movement of the punch 1 and the punch holder 3, and may also perform the synchronous movement of the punch 1 and the punch holder 3 according to other cooperating manners, such as a threaded connection or a keyed connection.

In addition, the lower part of the male die fixing device 3 is connected with a discharging assembly through a discharging screw 307, wherein the discharging screw 307 is an incomplete screw, namely, a screw rod of the discharging screw 307 is a smooth screw rod, one end of the screw rod is provided with partial threads, the other end of the screw rod is provided with a nut, and the smooth screw rod part of the discharging screw 307 simultaneously and smoothly passes through the upper die holder 303, the base plate 304 and the male die retainer ring 305 from top to bottom; on this basis, a plurality of discharging screws 307 are arranged and uniformly distributed along the circumference of the male die retainer 305;

the discharging assembly further comprises a discharging gasket 308, the discharging gasket 308 is in threaded connection with a part of the discharging screw 307 through a threaded hole, a first spring 309 is further sleeved on the discharging screw 307, and the first spring 309 is located between the male die retainer 305 and the discharging gasket 308.

In this embodiment, the unloading assembly is configured to facilitate removal of the workpiece from the punch 1 after completing the expansion action of the workpiece, where, when the unloading screw 307 is mounted on the punch fixing device 3 in a general state, the lower end surface of the nut abuts against the upper end surface of a preset connection hole in the upper die holder 303, and at this time, the nuts of the plurality of unloading screws 307 and the unloading washers 308 bear the own weights of the backing plate 304, the punch retainer 305, the punch connecting ring 301 and the punch 1 together, and then the first spring 309 is in a compressed state;

in addition, in order to ensure that the first spring 309 is in a slightly compressed state so that the parts cannot deviate from positioning and deviate, the weight of the male die 1 is reduced as much as possible on the basis that the first spring 309 selects a larger stiffness coefficient, so that the connecting portion 103 of the male die 1 only needs to ensure enough space to detachably connect the male die 1 with the male die connecting ring 301 through the first cylindrical pin 302, and the structural arrangement ensures that the vertical expansion die provided by the utility model has lighter overall weight, is convenient for operators to operate, can select a press with smaller nominal pressure to provide power for the vertical expansion die, saves the production cost, and represents the practicability of the utility model, and the expansion die needs to be matched with the press to use the conventional technical means of the existing die forming process, so the rest of the process is not explained in detail herein.

In this technical solution, as shown in fig. 1-2, the die fixing device 4 includes a lower die holder 401, where the lower die holder 401 is connected with the die 2 through a connection component.

The connecting assembly comprises a plurality of first bolts 402 and third cylindrical pins 403 which are used for connecting the lower die holder 401 with the female die 2, and the plurality of first bolts 402 and the plurality of third cylindrical pins 403 are uniformly distributed on the female die 2.

In this embodiment, after the female die 2 is connected with the female die fixing device 4 through the connecting component, the female die fixing device 4 limits the female die 2, so as to limit the movement of the female die 2 in any direction, and provide an accurate position basis for the expansion work of the male die 1.

In addition, the technical scheme provided by the utility model further comprises a plurality of groups of workpiece limiting mechanisms 5, wherein the plurality of groups of workpiece limiting mechanisms 5 are arranged on the female die 2 and are uniformly distributed on the outer circular end surface of the female die 2, each group of workpiece limiting mechanisms 5 comprises a positioning card 501, the lower part of each positioning card 501 is connected with the female die 2 through two second screws 502, and at the moment, the upper part of each positioning card 501 is higher than the upper end surface of the female die 2 in the horizontal position;

in addition, the workpiece limiting mechanism 5 further comprises a limiting screw 503, the limiting screw 503 is also an incomplete screw, the limiting screw 503 is arranged on the upper portion of the positioning card 501 and is installed along the radial direction of the male die 1, the smooth screw portion of the limiting screw 503 smoothly passes through the positioning card 501, a positioning block 504 is connected to a part of the threaded portion of the limiting screw 503, on the basis, a second spring 505 is further sleeved on the limiting screw 503, and the second spring 505 is located between the positioning block 504 and the positioning card 501.

In this embodiment, the workpiece limiting mechanisms 5 are configured to limit the workpiece in the whole working process of the vertical expansion mold, that is, when the original workpiece is sleeved on the outer wall of the small-diameter portion 101 of the male die 1, the positioning blocks 504 are attached to the circumferential side wall of the workpiece, and the second springs 505 are in a state of micro compression at this time, so that the workpiece is limited by the combined action of the male die 1 on the inner wall and the positioning blocks 504 on the outer wall, thereby preventing the original workpiece from being shifted in the whole process of being expanded, and further causing resource waste.

In this technical solution, the expansion action of the male die 1 requires guiding components in the direction of vertical movement thereof, the guiding components comprise two groups, and are symmetrically arranged on the upper die holder 303, each group of guiding components comprises a guiding column 404 connecting the upper die holder 303 with the lower die holder 401, and a guiding hole and a receiving hole respectively arranged on the upper die holder 303 and the lower die holder 401, and the guiding column 404 plays a guiding role in the guiding hole and the receiving hole.

In this embodiment, when the vertical expansion mold works, the punch fixing device 3 and the punch 1 realize accurate pressing action under the limit guiding action of the guiding component.

Specifically, when the vertical expansion die provided by the utility model is used for expanding the small-size water pump end ring, as shown in fig. 3, so that the large-size water pump end ring is formed to improve the utilization rate of the small-size water pump end ring, as shown in fig. 4, the expansion increment of the small-size water pump end ring is taken as an example of 4mm, firstly, a male die 1 is fixed on a male die fixing device 3, then the original small-size end ring is sleeved on a small-diameter part 101 of the male die 1, and the male die fixing device 3 and the male die 1 are moved according to a guide assembly to be arranged above a female die 2, at this time, the lower end face of the male die 1 is flush with the upper end face of the female die 2, and the lower end face of an end ring workpiece is attached to the upper end face of the female die 2;

at the same time, the positioning block 504 is attached to the circumferential side wall of the end ring workpiece, the lower end surface of the unloading washer 308 is attached to the upper end surface of the end ring workpiece, the first spring 309 is in a relaxed state, the second spring 505 is in a compressed state, and the second spring still has a further compression foundation; and at this point the guide post 404 may be removed;

then, a press is used to provide pressure for the expansion die on the upper end face of the upper die holder 303, the pressure is transmitted to the punch 1 through the punch fixing device 3, the punch 1 moves vertically downwards, since the die 2 prevents the end ring workpiece from following the punch 1 to move downwards, then it can only move to the large diameter part 102 according to the position basis provided by the slope in the working part of the punch 1, at this time, the diameter of the end ring workpiece is increased by 4mm, the second spring 505 is further compressed, the first spring 309 is also further compressed, and the newly increased compression distance is the height of the end ring workpiece;

then the press is controlled to vertically lift upwards, the punch fixing device 3, the punch 1 and the expanded end ring workpiece are lifted along with the press, and at the moment, a worker can detach the end ring workpiece from the large diameter part 102 of the punch 1 by knocking the nut part of the unloading screw 307 and releasing the end ring workpiece by matching with the elastic force of the first spring 309, so that the expansion process of the end ring workpiece is completed.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (7)

1. A vertical expansion die for a water pump end ring, comprising:

the lower part of the male die is provided with a stepped working part, the working part comprises a small-diameter part and a large-diameter part, the small-diameter part and the large-diameter part are excessively connected through an inclined plane, and the upper part of the male die is provided with a connecting part;

the female die is sleeved on the outer side of the large-diameter part of the male die, and the female die expands and pushes a workpiece which is arranged in the small-diameter part in advance to the large-diameter part through the matching of the female die and the large-diameter part, so that the expansion action of the workpiece is completed;

the male die fixing device comprises a male die connecting ring, and the male die connecting ring is detachably connected with the connecting part of the male die through a first cylindrical pin;

the die fixing device comprises a lower die holder, wherein the lower die holder is connected with the die through a connecting component, and is used for limiting the die and limiting the movement of the die in any direction;

and the workpiece limiting mechanisms are arranged on the female die and are used for limiting the workpieces in the whole working process of the vertical expansion die.

2. A vertical expansion die for a water pump end ring as claimed in claim 1, wherein: the male die fixing device further comprises an upper die holder, a base plate is arranged below the upper die holder, a male die retainer ring is arranged below the base plate, meanwhile, the male die retainer ring is sleeved outside the male die connecting ring, the upper die holder, the base plate and the male die retainer ring are connected in a positioning mode through a plurality of second cylindrical pins, and on the basis, the male die retainer ring is matched with the male die connecting ring to realize synchronous movement of the male die and the male die fixing device;

in addition, the lower part of the male die fixing device is connected with a discharging assembly through a discharging screw, and the discharging assembly is used for conveniently taking the workpiece off the male die after the expansion action of the workpiece is completed.

3. A vertical expansion die for a water pump end ring as claimed in claim 2, wherein:

the discharging screw is an incomplete screw, namely a screw rod of the discharging screw is a smooth screw rod, one end of the screw rod is provided with partial threads, the other end of the screw rod is provided with a screw cap, and the smooth screw rod part of the discharging screw simultaneously and smoothly passes through the upper die holder, the base plate and the male die retainer ring from top to bottom; on the basis, a plurality of discharging screws are arranged and are uniformly distributed along the circumference of the male die retainer ring;

the discharging assembly further comprises a discharging gasket, the discharging gasket is in threaded connection with a part of the discharging screw through a threaded hole, a first spring is sleeved on the discharging screw, and the first spring is located between the male die retainer ring and the discharging gasket.

4. A vertical expansion die for a water pump end ring as claimed in claim 3, wherein: the male die fixing device further comprises two groups of guide assemblies, the two groups of guide assemblies are symmetrically arranged on the upper die holder, each group of guide assemblies comprises guide columns for connecting the upper die holder and the lower die holder, guide holes and receiving holes respectively arranged on the upper die holder and the lower die holder, and when the vertical expansion die works, the male die fixing device and the male die realize accurate pressing action under the limiting and guiding actions of the guide assemblies.

5. A vertical expansion die for a water pump end ring as claimed in claim 1, wherein: in the die fixing device, the connecting component comprises a plurality of first bolts and third cylindrical pins which are used for connecting the lower die base with the die, and the first bolts and the third cylindrical pins are uniformly distributed on the die.

6. A vertical expansion die for a water pump end ring as claimed in claim 1, wherein:

the workpiece limiting mechanisms are uniformly distributed on the outer circular end face of the female die, wherein each workpiece limiting mechanism comprises a positioning clamp, the lower part of each positioning clamp is connected with the female die through two second screws, and at the moment, the upper part of each positioning clamp is higher than the upper end face of the female die in the horizontal position;

in addition, work piece stop gear still includes stop screw, stop screw is the incomplete screw equally, stop screw is located the upper portion of locator card, and follows the radial direction installation of terrace die, stop screw's smooth screw rod position is smooth to pass the locator card, stop screw's partial screw thread position is connected with the locating piece, on this basis, still the cover is equipped with the second spring on the stop screw, the second spring is located the locating piece with between the locator card.

7. A vertical expansion die for a water pump end ring as claimed in claim 1, wherein: the male die is made of quenched T8 steel, and the female die is made of 45# steel.