Double-station water expansion forming machine

Abstract

The utility model relates to a double-station water swelling forming machine which comprises a rack, a bulging device arranged on the rack and used for bulging a product and a pressurizing device used for providing high-pressure liquid into the bulging device. The bulging device comprises a movable cross beam, an upper mold, a lower mold and a mold locking device; the movable cross beam, the upper mold and the lower mold are arranged on the rack; the mold locking device is used for driving the upper mold to move downwards so as to realize mold locking when the upper mold and the lower mold are closed; the rack is provided with a moving platform and a transverse driving mechanism used for driving the moving platform to move transversely. A plurality of high-pressure water outlets are formed in the movable platform, the water outlets are arranged in the moving direction of the movable platform, the number of the lower dies is multiple, and the multiple sets of lower dies are arranged in the moving direction of the movable platform. By means of the arrangement, the double-station water expansion forming machine can complete a plurality of different expansion working procedures on a workpiece, and machining cost can be saved.

Description

Technical Field

[0001] The utility model relates to mechanical processing equipment, in particular to a double-station water expansion forming machine. Background Art

[0002] The water bulging forming machine is an advanced manufacturing technology for manufacturing hollow integral components by internal high pressure forming. Its principle is to use the pipe as the blank, water as the transmission medium, seal both ends of the pipe, and fill the pipe with ultra-high pressure water to generate pressure on the inner wall of the pipe, so that the outer wall of the pipe is completely close to the mold cavity, thereby obtaining the desired shape of the part. For example, the invention patent application with application publication number CN107052122A discloses "a hydraulic water expansion molding machine", in which the lower mold of the water expansion mold in the hydraulic water expansion molding machine is installed on a movable workbench, and the upper mold is installed on a movable crossbeam. After the mold is opened, the movable workbench drives the lower mold of the water expansion mold to slide out of the inner frame of the movable crossbeam. Because the lower mold is outside the inner frame of the movable crossbeam at this time, workers take out or put products in the lower mold without worrying about whether the movable crossbeam will suddenly slide down and cause danger, thereby improving the operational safety of the machine; secondly, the maximum closed height of the vertical hydraulic water expansion machine equipped with a movable workbench is greater than the total height of the water expansion mold plus the height of the product after it is higher than the lower mold, and the minimum closed height is less than the total height of the water expansion mold. The maximum closed height of the vertical water expansion machine with a fixed workbench needs to be greater than the total height of the water expansion mold plus the product height, and the minimum closed height is less than the total height of the water expansion mold. Therefore, the vertical hydraulic water expansion machine equipped with a movable workbench has a smaller maximum closed height than the vertical hydraulic water expansion machine with a fixed workbench, thereby reducing costs.

[0003] However, although a plurality of high-pressure water outlets are arranged on the mobile platform of the above-mentioned hydraulic bulging forming machine, the arrangement direction of the plurality of high-pressure water outlets is perpendicular to the movement direction of the mobile platform, and therefore the plurality of high-pressure water outlets are moved to the processing station at the same time; although a plurality of sets of lower molds can be arranged on the mobile platform, the plurality of lower molds are distributed on both sides of the clamping cylinder, i.e. not at its center position, which may lead to the defect that the clamping force of the clamping cylinder may be overloaded; in addition, the clamping cylinder needs to lock a plurality of sets of molds, and the required clamping force must also be increased accordingly, which will increase the tonnage and cost of the equipment. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a double-station water expansion molding machine, which can complete a plurality of different expansion processes for a workpiece, thereby saving processing costs.

[0005] The technical solution of the utility model to solve the above technical problems is:

[0006] A double-station water expansion molding machine comprises a frame, a bulging device arranged on the frame for bulging a product, and a pressurizing device for providing high-pressure liquid into the bulging device, wherein the bulging device comprises a movable crossbeam arranged on the frame, an upper mold, a lower mold, and a clamping device for driving the upper mold to move downward so as to achieve clamping when the upper mold and the lower mold are closed; wherein a mobile platform and a lateral driving mechanism for driving the mobile platform to move lateral are arranged on the frame, wherein a plurality of high-pressure water outlets are arranged on the mobile platform, and the plurality of water outlets are arranged along the movement direction of the mobile platform, and the lower molds are multiple groups, and the multiple groups of lower molds are arranged along the movement direction of the mobile platform.

[0007] Preferably, there are multiple groups of boosting devices, and the outlet end of each group of boosting devices is respectively connected to one or more high-pressure water outlets, and a control valve for controlling the opening and closing of the connecting pipeline is provided on the connecting pipeline between the boosting device and the high-pressure water outlet.

[0008] By setting up multiple sets of boosting devices, compared with the water expansion forming machine with a single set of boosting device, it has the following advantages:

[0009] Each booster device is connected to one or more high-pressure water outlets, and a control valve is arranged on the connecting pipeline to control the on-off of the connecting branch, so as to realize water supply to one high-pressure water outlet through multiple booster devices. When a large-capacity product is expanded, under the premise of ensuring that the internal water pressure of the workpiece meets the preset value, multiple sets of small-capacity booster cylinders are set to increase the pressure under the same boosting parameters. The method of replacing the large-capacity booster cylinder can effectively shorten the stroke of the booster cylinder in the booster device, so that the device has the advantages of expanding both large-capacity products and small-capacity products, and can effectively improve the defects of too short boosting stroke and difficulty in accurately controlling the stroke when a large-capacity booster cylinder is used to expand a small-capacity product.

[0010] Preferably, the number of the lower molds and the high-pressure water outlets is consistent, and each group of lower molds is connected to one high-pressure water outlet.

[0011] Preferably, there are two high-pressure water outlets, which are arranged in parallel, namely the first high-pressure water outlet and the second high-pressure water outlet; correspondingly, there are also two groups of boosting devices, namely the first boosting device and the second boosting device.

[0012] Preferably, the outlet end of the first boosting device is communicated with the first high-pressure water outlet; the outlet end of the second boosting device is communicated with the second high-pressure water outlet.

[0013] Preferably, the outlet end of the first boosting device is connected to the first high-pressure water outlet and the second high-pressure water outlet respectively; the outlet end of the second boosting device is connected to the first high-pressure water outlet and the second high-pressure water outlet respectively, wherein control valves are respectively provided between the outlet end of the first boosting device and the first high-pressure water outlet and the second high-pressure water outlet, and between the outlet end of the second boosting device and the first high-pressure water outlet and the second high-pressure water outlet.

[0014] Preferably, a guiding mechanism is arranged between the mobile platform and the machine platform of the rack, and the guiding mechanism includes a slide groove arranged on the machine platform of the rack and a slider arranged on the mobile platform, wherein the slide groove is arranged on both sides of the machine platform of the rack, and the slider is arranged on both sides of the mobile platform, and the slider cooperates with the corresponding slide groove.

[0015] Preferably, the lateral driving mechanism is an electric push rod or a hydraulic cylinder.

[0016] Preferably, the two groups of boosting devices are arranged in parallel and vertically.

[0017] Preferably, the boosting device comprises a bracket, an injection cylinder and a boosting cylinder arranged on the bracket, wherein filling liquid is stored in the injection cylinder, and the outlet end of the injection cylinder is connected to the high-pressure water outlet through a connecting pipe.

[0018] Preferably, the clamping device is a clamping cylinder arranged on the movable crossbeam.

[0019] Preferably, the two supercharging devices are driven by one power system, or are driven by two or more power systems respectively.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] (1) The mobile platform in the utility model is provided with a plurality of high-pressure water outlets, and the plurality of water outlets are arranged along the movement direction of the mobile platform. The lower molds are divided into a plurality of groups, and the plurality of groups of lower molds are arranged along the movement direction of the mobile platform. For example, two lower molds are provided on the mobile platform, and the two lower molds can be the same molds or different molds. When they are two different molds, the first lower mold can complete the first process of the workpiece, and the second lower mold can complete the second process of the workpiece, that is, the workpiece to be processed is first placed in the first lower mold, and the first lower mold is sent to the processing station through the mobile platform. After the workpiece completes the initial bulging, the workpiece is taken out and placed in the second lower mold, and the second lower mold is sent to the processing station through the mobile platform to complete the re-bulging of the workpiece. In this way, multiple processing steps can be completed by one device, which is beneficial to reduce the processing cost.

[0022] (2) The multiple lower molds in the utility model enter the processing station separately, so the appropriate clamping force can be adjusted according to the needs of each processing step.

[0023] (3) In the present invention, the mobile platform is driven to move by a lateral driving mechanism. When one set of lower molds and upper molds are combined to form a workpiece, the worker can install the workpiece on the other set of lower molds or remove the formed workpiece. This ensures that during the loading and unloading process of the double-station water expansion molding machine of the present invention, there is always a station in the processing state, which is conducive to improving the processing efficiency.

[0024] (4) The lower mold on the mobile platform of the utility model is located at the center of the clamping device. The clamping device only needs to lock one set of molds at a time, so that the clamping force will not be unevenly loaded. In addition, the clamping device only needs to lock one set of molds at a time, so the required clamping force will not be too large, and the tonnage of the equipment will not increase, thereby not increasing the cost of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1-Figure 2 The three-dimensional structure diagrams of the double-station water expansion forming machine of the utility model are shown in two different perspectives.

[0026] Figure 3 and Figure 4 Schematic diagram of the three-dimensional structure of the mobile platform and the lateral driving mechanism from two different perspectives.

[0027] Figure 5 This is a schematic diagram of the first type of connecting pipelines between two sets of boosting devices and two high-pressure water outlets.

[0028] Figure 6 This is a schematic diagram of the second connection pipeline between two sets of boosting devices and two high-pressure water outlets. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0030] See also Figure 1-Figure 6The double-station water expansion molding machine of the utility model comprises a frame, a bulging device for bulging a product arranged on the frame, and a booster device 1 for providing high-pressure liquid into the bulging device, wherein the bulging device comprises a movable crossbeam 4, an upper mold, a lower mold, and a clamping device for driving the upper mold to move downward to achieve clamping when the upper mold and the lower mold are clamped; wherein the upper mold is installed on the movable crossbeam 4, and the clamping device is a clamping cylinder 5; a mobile platform 2 and a lateral driving mechanism 3 for driving the mobile platform 2 to move horizontally are arranged on the frame, wherein the lower mold is multiple, and multiple lower molds are installed on the mobile platform 2, and the mobile platform 2 is provided with multiple high-pressure water outlets 8; the booster device 1 is multiple groups, and the outlet end of each group of the booster device 1 is respectively connected to one or more of the high-pressure water outlets 8, and the connecting pipeline between the booster device 1 and the high-pressure water outlet 8 is provided with a control valve 9 for controlling the on-off of the connecting pipeline.

[0031] In this embodiment, there are two high-pressure water outlets 8, which are arranged in parallel, namely, a first high-pressure water outlet and a second high-pressure water outlet; correspondingly, the boosting device 1 also has two groups, namely, a first boosting device and a second boosting device; wherein, there are two specific pipe connection methods:

[0032] (i) The outlet end of the first boosting device is connected to the first high-pressure water outlet; the outlet end of the second boosting device is connected to the second high-pressure water outlet;

[0033] (ii) The outlet end of the first boosting device is connected to the first high-pressure water outlet and the second high-pressure water outlet respectively; the outlet end of the second boosting device is connected to the first high-pressure water outlet and the second high-pressure water outlet respectively, wherein a control valve 9 is provided between the outlet end of the first boosting device and the first high-pressure water outlet and the second high-pressure water outlet respectively, and between the outlet end of the second boosting device and the first high-pressure water outlet and the second high-pressure water outlet respectively.

[0034] The above settings have the following benefits:

[0035] (1) By setting two high-pressure water outlets on the mobile platform 2, a single group or two groups of lower molds can be set on the mobile platform 2; wherein, when a single group of lower molds is set on the mobile platform 2, one or two groups of boosting devices 1 can be selected for boosting. For example, when the product to be bulged is a small-capacity product, a single group of boosting devices 1 can be used for boosting, so as to better control the boosting stroke and ensure product quality; for example, when the product to be bulged is a large-capacity product, two groups of boosting devices 1 can be used for boosting, which can effectively shorten the stroke of the boosting cylinder in the boosting device 1;

[0036] (2) When two groups of lower molds are provided, a hydraulic valve can be provided to realize that the two groups of boosting devices 1 supply liquid to one high-pressure water outlet 8 alone, or supply liquid to two groups of high-pressure water outlets 8 respectively. In addition, the lateral driving mechanism 3 is cooperated to drive the moving platform 2 to move. When one group of lower molds is combined with the upper mold to form the workpiece, the staff can install the workpiece on the other group of lower molds or remove the formed workpiece. In this way, it can be ensured that during the loading and unloading process of the double-station water expansion molding machine of the utility model, there is always a station in the processing state, which is conducive to improving work efficiency.

[0037] (3) When two different lower molds are set, that is, the first lower mold can complete the first process of the workpiece, and the second lower mold can complete the second process of the workpiece, the workpiece to be processed is first placed in the first lower mold, and the first lower mold is sent to the processing station through the mobile platform 2. After the workpiece completes the initial bulging, the workpiece is taken out and placed in the second lower mold, and the second lower mold is sent to the processing station through the mobile platform 2 to complete the re-bulging of the workpiece; in this way, multiple processing steps can be completed by one device; and because the multiple lower molds enter the processing station separately, the appropriate clamping force can be adjusted according to the needs of each processing step.

[0038] See also Figure 1-Figure 6 A guiding mechanism for guiding the lateral movement of the mobile platform 2 is arranged between the mobile platform 2 and the machine table 6 of the frame, and the guiding mechanism includes a slide groove arranged on the machine table 6 of the frame and a slider 7 arranged on the mobile platform 2, wherein the slide groove is arranged on both sides of the machine table 6 of the frame, and the slider 7 is arranged on both sides of the mobile platform 2, and the slider 7 cooperates with the corresponding slide groove; the lateral driving mechanism is an electric push rod or a hydraulic cylinder.

[0039] See also Figure 1-Figure 6 , two groups of boosting devices 1 are arranged in parallel and both are arranged vertically, each group of boosting devices 1 includes a bracket, an injection cylinder and a boosting cylinder arranged on the bracket, wherein the injection cylinder stores a filling liquid, and the outlet end of the injection cylinder is connected to the high-pressure water outlet through a connecting pipe; in this embodiment, the specific structure of the boosting cylinder and the injection cylinder can refer to the boosting cylinder and the injection cylinder in the invention patent application with application publication number CN107052122A disclosed in "A hydraulic water expansion molding machine".

[0040] In addition, the two boosting devices 1 are driven by one power system, or by two or more power systems. By being driven by two or more power systems, the high-pressure water outlet 8 can obtain different expansion speeds and expansion water pressures.

[0041] The above is a preferred implementation mode of the present invention, but the implementation mode of the present invention is not limited by the above content. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A double-station water expansion forming machine, characterized in that: It includes a frame, a bulging device arranged on the frame for bulging the product, and a booster device for providing high-pressure liquid into the bulging device, wherein the bulging device includes a movable crossbeam arranged on the frame, an upper mold, a lower mold, and a locking device for driving the upper mold to move downward to achieve locking when the upper mold and the lower mold are closed; wherein a mobile platform and a lateral driving mechanism for driving the mobile platform to move lateral are arranged on the frame, wherein a plurality of high-pressure water outlets are arranged on the mobile platform, and the plurality of water outlets are arranged along the movement direction of the mobile platform, and the lower molds are multiple groups, and the multiple groups of lower molds are arranged along the movement direction of the mobile platform.

2. The double-station water expansion forming machine according to claim 1, characterized in that: There are multiple groups of boosting devices, and the outlet end of each group of boosting devices is respectively connected to one or more high-pressure water outlets. A control valve for controlling the opening and closing of the connecting pipeline is provided on the connecting pipeline between the boosting device and the high-pressure water outlet.

3. The double-station water expansion forming machine according to claim 1, characterized in that: The number of the lower molds is consistent with the number of the high-pressure water outlets, and each group of lower molds is connected to one high-pressure water outlet.

4. The double-station water expansion forming machine according to claim 1, characterized in that: There are two high-pressure water outlets, which are arranged in parallel, namely the first high-pressure water outlet and the second high-pressure water outlet; correspondingly, there are two groups of boosting devices, namely the first boosting device and the second boosting device, wherein: The outlet end of the first boosting device is in communication with the first high-pressure water outlet; the outlet end of the second boosting device is in communication with the second high-pressure water outlet; Alternatively, the outlet end of the first boosting device is connected to the first high-pressure water outlet and the second high-pressure water outlet respectively; the outlet end of the second boosting device is connected to the first high-pressure water outlet and the second high-pressure water outlet respectively, wherein control valves are respectively provided between the outlet end of the first boosting device and the first high-pressure water outlet and the second high-pressure water outlet, and between the outlet end of the second boosting device and the first high-pressure water outlet and the second high-pressure water outlet.

5. The double-station water expansion forming machine according to claim 2, characterized in that: A guiding mechanism is arranged between the mobile platform and the machine platform of the rack, and the guiding mechanism includes a slide groove arranged on the machine platform of the rack and a slider arranged on the mobile platform, wherein the slide groove is arranged on both sides of the machine platform of the rack, and the slider is arranged on both sides of the mobile platform, and the slider cooperates with the corresponding slide groove.

6. The double-station water expansion forming machine according to claim 5, characterized in that: The lateral driving mechanism is an electric push rod or a hydraulic cylinder.

7. The double-station water expansion forming machine according to claim 2, characterized in that: The two sets of boosting devices are arranged in parallel and vertically.

8. The double-station water expansion forming machine according to claim 1, characterized in that: The boosting device comprises a bracket, an injection cylinder and a boosting cylinder arranged on the bracket, wherein the injection cylinder stores filling liquid, and the outlet end of the injection cylinder is connected to the high-pressure water outlet through a connecting pipeline.

9. The double-station water expansion forming machine according to claim 2, characterized in that: The clamping device is a clamping cylinder arranged on the movable crossbeam.

10. The double-station water expansion forming machine according to claim 2, characterized in that: The two supercharging devices are driven by one power system, or are driven by two or more power systems respectively.

Images