Pump body machining fixing mould with multiple layers of steps

Abstract

The utility model relates to the technical field of multi-layer step pump body machining, in particular to a multi-layer step pump body machining fixing mould which comprises a bottom plate, outer lead screws are vertically arranged at the four corners of the bottom plate, and the outer lead screws are detachably and fixedly connected with the bottom plate. The outer lead screw is sequentially sleeved with a first pressing plate, a second pressing plate and a third pressing plate which are in threaded fit with the outer lead screw from top to bottom, the diameter of the first pressing plate, the diameter of the second pressing plate and the diameter of the third pressing plate are sequentially reduced, and corresponding steps on the die are pressed through the corresponding first pressing plate, the corresponding second pressing plate and the corresponding third pressing plate respectively. By means of the pressing device, all the step faces of an upper mold with the step faces can be pressed through the first pressing plate, the second pressing plate and the third pressing plate, thin-wall step deformation caused by the fact that clamping force is concentrated on a single plane is avoided, meanwhile, the movable connecting plate can be arranged to drive the outer lead screw to move, molds of different sizes are pressed, and the pressing efficiency is improved. And the application range is further expanded.

Description

Technical Field

[0001] This utility model belongs to the field of multi-step pump body processing technology, specifically a multi-step pump body processing fixing jig. Background Technology

[0002] Multi-step pump bodies (such as centrifugal pump housings) have an axially stacked annular step structure. When manufacturing them, the molds often need to be equipped with corresponding annular step structures. In order to ensure the clamping of the mold, a clamping fixture is required. However, traditional general-purpose clamping fixtures often use clamping plates to clamp only the center of the top of the upper mold. This method will cause the clamping force to be concentrated on a single plane, which can easily cause deformation of the thin-walled steps. Utility Model Content

[0003] This invention provides a multi-step pump body machining and fixing jig to overcome the defects in the prior art.

[0004] This utility model is achieved through the following technical solution:

[0005] A multi-step pump body machining and fixing jig includes a base plate, with external threaded rods vertically arranged at the four corners of the base plate. The external threaded rods are detachably and fixedly connected to the base plate. A first pressure plate, a second pressure plate, and a third pressure plate that are threadedly engaged with the external threaded rods are sequentially fitted on the external threaded rods from top to bottom. The diameters of the first pressure plate, the second pressure plate, and the third pressure plate decrease sequentially. The corresponding steps on the mold are pressed by the corresponding first pressure plate, second pressure plate, and third pressure plate.

[0006] In use, the lower mold is first placed on the base plate, and then the upper mold with multiple steps is fastened onto the upper mold. Then, the corresponding first pressure plate, second pressure plate and third pressure plate are rotated so that the first pressure plate, second pressure plate and third pressure plate press against the top surface of the corresponding step. Since the external screw is distributed around the base plate, it can not only achieve clamping at each step, but also make the pressure even, effectively avoiding the clamping force from concentrating on a single plane and causing deformation of the thin-walled step.

[0007] Preferably, the bottom surfaces of the first, second, and third pressure plates are fixedly connected to a support platform. The support platform has a tapered structure that is wider at the top and narrower at the bottom, and a through hole is provided on the support platform to mate with the corresponding external threaded rod. The support platform can support the corresponding first, second, and third pressure plates, effectively preventing tilting when one side of the first, second, and third pressure plates presses against the corresponding step surface.

[0008] Preferably, annular rubber pads are fixedly connected to the bottom surfaces of the first, second, and third pressure plates, extending to the outer edges of the corresponding first, second, and third pressure plates. The annular rubber pads prevent the first, second, and third pressure plates from directly contacting the corresponding step surfaces, thereby avoiding compression damage to the step surfaces.

[0009] Preferably, the base plate has a strip groove, and the inner walls of both sides of the strip groove have sliding grooves. A slider is installed within the sliding groove, and the two sliders are fixedly connected by a connecting plate. The connecting plate has a screw hole, and an external lead screw is threaded into the screw hole. The connecting plate is driven to move and remain stationary by a driving device. Driven by the driving device and limited by the slider, the connecting plate moves, causing the screw hole to move, which in turn moves the external lead screw, thus enabling the movement of the first, second, and third pressure plates, thereby satisfying the clamping of upper molds of different sizes.

[0010] Preferably, the driving device includes a screw, a screw hole on the connecting plate, the screw passing through the screw hole and threaded into the screw hole, and a through hole on the strip groove through which the screw passes out of the base plate. Rotating the screw drives the connecting plate to move according to the principle of a lead screw drive slide, while simultaneously ensuring the fixed position of the connecting plate when the screw is not rotating.

[0011] Preferably, a central lead screw is threaded at the center of the base plate, and a lower pressure plate is fitted on the central lead screw. The lower pressure plate and the central lead screw are threaded together, and the central lead screw can be used for annular molds. This allows the central lead screw to pass through the inner ring of the annular mold and to be squeezed by the lower pressure plate, further increasing the applicability of the equipment.

[0012] The beneficial effects of this utility model are as follows: The use of this application can achieve the pressing of each step surface of the upper mold with stepped surfaces through the first pressure plate, the second pressure plate and the third pressure plate, avoiding the clamping force concentrated on a single plane and causing deformation of thin-walled steps. At the same time, by setting a movable connecting plate to drive the external screw to move, it can achieve the pressing of molds of different sizes, further increasing its applicability. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a top view of the base plate.

[0016] As shown in the figure:

[0017] 1. Base plate, 2. External lead screw, 3. First pressure plate, 4. Second pressure plate, 5. Third pressure plate, 6. Support platform, 7. Annular rubber pad, 8. Strip groove, 9. Slide groove, 10. Slider, 11. Connecting plate, 12. Intermediate lead screw, 13. Lower pressure plate. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] A multi-step pump body machining and fixing fixture, such as Figure 1 and Figure 2 As shown, the mold includes a base plate 1, with external threaded rods 2 vertically mounted at its four corners. The external threaded rods 2 are detachably and fixedly connected to the base plate 1. From top to bottom, a first pressure plate 3, a second pressure plate 4, and a third pressure plate 5 are sequentially fitted onto the external threaded rods 2, with their diameters decreasing sequentially. Corresponding steps on the mold are pressed down by the corresponding first pressure plate 3, second pressure plate 4, and third pressure plate 5. When a four-step surface is provided, a fourth pressure plate is threadedly connected to the corresponding external threaded rod 2. Similarly, when a two-step surface is provided, a useless first pressure plate 3, second pressure plate 4, or third pressure plate 5 is rotated out from the corresponding external threaded rod 2.

[0020] In use, the lower mold is first placed on the base plate 1, and then the upper mold with multiple steps is fastened on the upper mold. Then, the corresponding first pressure plate 3, second pressure plate 4 and third pressure plate 5 are rotated so that the first pressure plate 3, second pressure plate 4 and third pressure plate 5 press against the top surface of the corresponding step. Since the external screw 2 is distributed around the base plate 1, it can not only achieve clamping at each step, but also make the pressure even, effectively avoiding the clamping force from concentrating on a single plane and causing deformation of the thin-walled step.

[0021] A support platform 6 is fixedly connected to the bottom surface of the first pressure plate 3, the second pressure plate 4, and the third pressure plate 5. The support platform 6 has a tapered structure that is wider at the top and narrower at the bottom, and a through hole is provided on the support platform 6 to engage with the corresponding external lead screw 2. The support platform 6 can support the corresponding first pressure plate 3, second pressure plate 4, and third pressure plate 5, effectively preventing tilting when one side of the first pressure plate 3, second pressure plate 4, and third pressure plate 5 presses against the corresponding step surface.

[0022] An annular rubber pad 7 is fixedly connected to the bottom surface of the first pressure plate 3, the second pressure plate 4, and the third pressure plate 5. The annular rubber pad 7 extends to the outer edge of the corresponding first pressure plate 3, the second pressure plate 4, and the third pressure plate 5. The annular rubber pad 7 can prevent the first pressure plate 3, the second pressure plate 4, and the third pressure plate 5 from directly contacting the corresponding step surface, thereby avoiding squeezing damage to the step surface.

[0023] A strip groove 8 is provided on the base plate 1. Sliding grooves 9 are provided on the inner walls of both sides of the strip groove 8. A slider 10 is provided in the sliding groove 9. The two sliders 10 are fixedly connected by a connecting plate 11. A screw hole is provided on the connecting plate 11. An external screw rod 2 is threaded into the screw hole. The connecting plate 11 is driven to move and stay still by a driving device. The driving device includes a screw rod. A screw hole is provided on the connecting plate 11. The screw rod passes through the screw hole and is threaded into the screw hole. A through hole is provided on the strip groove 8. The screw rod passes through the through hole and exits the base plate 1.

[0024] The rotating screw drives the connecting plate 11 to move according to the principle of the lead screw 12 transmission slide. At the same time, when the screw is not rotating, the position of the connecting plate 11 is fixed. The moving connecting plate 11 and the movement under the limitation of the slider 10 drive the position of the screw hole to move, which in turn drives the position of the outer lead screw 2 to move. This enables the movement of the positions of the first pressure plate 3, the second pressure plate 4 and the third pressure plate 5, thereby satisfying the clamping of upper molds of different sizes.

[0025] A central lead screw 12 is threadedly connected to the center of the base plate 1. A lower pressure plate 13 is fitted on the central lead screw 12. The lower pressure plate 13 and the central lead screw 12 are threadedly engaged. The central lead screw 12 can be used for annular molds, allowing the central lead screw 12 to pass through the inner ring of the annular mold and to be squeezed by the lower pressure plate 13, thus further increasing the applicability of the equipment.

[0026] The use of this application can achieve the clamping of each step surface of the upper mold with stepped surfaces through the first pressure plate 3, the second pressure plate 4 and the third pressure plate 5, so as to avoid the clamping force being concentrated on a single plane and causing deformation of the thin-walled steps. At the same time, by setting a movable connecting plate 11 to drive the external screw 2 to move, it can achieve the clamping of molds of different sizes, further increasing its applicability.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A multi-step pump body machining and fixing jig, characterized in that: The mold includes a base plate, on which external threaded rods are vertically arranged at the four corners. The external threaded rods are detachably and fixedly connected to the base plate. From top to bottom, a first pressure plate, a second pressure plate, and a third pressure plate are sequentially fitted on the external threaded rods, with the diameters of the first pressure plate, the second pressure plate, and the third pressure plate decreasing sequentially. The corresponding steps on the mold are pressed by the corresponding first pressure plate, the second pressure plate, and the third pressure plate.

2. The multi-step pump block machining fixture according to claim 1, wherein: The bottom surfaces of the first pressure plate, the second pressure plate, and the third pressure plate are fixedly connected to a support platform. The support platform has a tapered structure that is wider at the top and narrower at the bottom, and a through hole is provided on the support platform to mate with the corresponding external screw thread.

3. The multi-step pump block machining fixture according to claim 2, wherein: An annular rubber pad is fixedly connected to the bottom surface of the first pressure plate, the second pressure plate and the third pressure plate, and the annular rubber pad extends to the outer edge of the corresponding first pressure plate, the second pressure plate and the third pressure plate.

4. The multi-step pump block machining fixture according to claim 1, wherein: The base plate has a strip groove, and the inner walls of both sides of the strip groove have sliding grooves. A slider is installed in the sliding groove, and the two sliders are fixedly connected by a connecting plate. The connecting plate has a screw hole, and the external screw rod is threaded into the screw hole. The connecting plate is driven to move and stay still by a driving device.

5. The multi-step pump block machining fixture according to claim 4, wherein: The driving device includes a screw, a screw hole is provided on the connecting plate, the screw passes through the screw hole and is threaded into the screw hole, and a through hole is provided on the strip groove, through which the screw passes out of the base plate.

6. The multi-step pump block machining fixture according to claim 1, wherein: A central threaded rod is connected to the center of the base plate, and a lower pressure plate is fitted on the central threaded rod. The lower pressure plate is threadedly engaged with the central threaded rod.

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