Double-screw pump spiral casing molded line forming and milling device

Abstract

The invention provides a double-screw pump helical casing molded line forming and milling device, which relates to the field of helical casing processing, and comprises a base, a driving screw, a fixed bracket and a movable table, a threaded cylinder is installed on the bottom side in the moving table, the driving screw is further in engaged connection with the threaded cylinder through threads, two sets of machining material driving shafts are rotationally clamped to the moving table, and supporting structures are further arranged on the lower sides of the foremost ends of the parts, with the large diameters, of the two sets of machining material driving shafts. Lifting structures are further arranged at the front ends of the small-diameter parts of the two sets of machining material driving shafts, the fixing support is fixed to the base, a double-end driving motor is installed at the rear end of the top of the fixing support, and two sets of milling cutter driving shafts are rotationally clamped to the inner side of the upper end of the fixing support; and the rear end of the milling cutter driving shaft is in transmission connection with a motor shaft at the rear end of the double-head driving motor. Two sets of spiral raw materials can be machined at the same time, the manufacturing cost is low, and the problems that an existing machining machine tool is high in investment and low in machining efficiency are solved.

Description

Technical Field

[0001] The invention relates to the technical field of spiral sleeve processing, in particular to a spiral sleeve profile forming milling processing device for a twin-screw pump. Background Art

[0002] As a highly efficient fluid delivery device, the core component of the twin-screw pump is a pair of precisely meshed spiral sleeves. The spiral structure forms a continuous sealed chamber through rotation, achieving low pulsation and high volumetric efficiency liquid delivery. It is widely used in complex media such as oils, aqueous solutions and high-viscosity emulsions. However, the following technical bottlenecks are common in the current spiral sleeve processing field: 1. The existing process relies on high-precision CNC machine tools to mill and shape the spiral sleeve blank piece by piece, and the equipment purchase and maintenance costs are high. Taking the five-axis linkage machining center as an example, the investment in a single equipment exceeds one million yuan, and it needs to be equipped with special tooling and fixtures, which further increases the overall production cost; 2. Traditional machine tools adopt a single-station operation mode of "one clamp and one installation". Each spiral sleeve needs to go through multiple process cycles such as clamping positioning, rough processing, fine processing, and testing. According to statistics, it takes an average of 4-6 hours to complete the processing of a single spiral sleeve, and the equipment utilization rate is less than 60%, which is difficult to meet the needs of large-scale production. Summary of the invention

[0003] In order to solve the problems in the background technology, the present invention provides a twin-screw pump spiral sleeve profile forming milling processing device, which can respectively drive the milling cutter drive shaft and two groups of processing material drive shafts to rotate through a double-head drive motor, and process two groups of spiral raw materials at the same time, and under the action of the transmission belt tensioning structure, even if the processing material drive shaft is lifted upward, it does not affect the transmission between the double-head drive motor and the processing material drive shaft. The overall structure of the present invention is relatively simple, and the cost is low compared to processing using machine tools.

[0004] The present invention provides a twin-screw pump spiral sleeve profile forming milling processing device, which specifically includes: a base, a driving screw, a fixed bracket and a moving platform; A first driving motor is installed at the rear end of the base, and the front end of the first driving motor is connected to a driving screw. The moving table is slidably installed on the base. A threaded cylinder is installed on the inner bottom side of the moving table, and the driving screw is also in threaded engagement with the threaded cylinder. Two groups of workpiece driving shafts are rotatably clamped on the moving table, and the two groups of workpiece driving shafts are of a structure with a thicker diameter at the front end and a thinner diameter at the rear end. A supporting structure is also provided on the lower side of the frontmost part of the thicker-diameter parts of the two groups of workpiece driving shafts, and a lifting structure is provided at the front end of the thinner-diameter parts of the two groups of workpiece driving shafts. The fixed bracket is of an overall U-shaped structure and is fixed on the base. A double-headed driving motor is installed at the rear end of the top of the fixed bracket. Two groups of milling cutter driving shafts are rotatably clamped inside the upper end of the fixed bracket. The two groups of milling cutter driving shafts are inclined with respect to the lower workpiece driving shafts respectively, and the rear end of the milling cutter driving shaft is in transmission connection with the motor shaft at the rear end of the double-headed driving motor. The front ends of the two groups of milling cutter driving shafts are respectively provided with clamping keys A, and milling cutters are respectively installed at the front ends of the milling cutter driving shafts through the clamping keys A.

[0005] Further, locking sleeves are respectively screwed on the front and rear sides of the clamping keys A on the two groups of milling cutter driving shafts, and six attaching plates are provided on the side of the locking sleeve close to the milling cutter.

[0006] Further, the supporting structure includes a front support frame, a guide post B and an electric push rod B; A workpiece driving shaft placement groove is provided at the top end of the front support frame. Guide posts B are respectively inserted through the two ends of the bottom, and the middle of the bottom is respectively connected to the telescopic end of the electric push rod B. The bottom ends of the guide posts B and the electric push rod B are respectively fixed at the inner bottom side of the moving table.

[0007] Further, manual adjustment screws are respectively installed at the two ends of the top side of the front support frame through internal threaded holes. Adjusting handwheels are respectively connected to the front ends of the manual adjustment screws, and retaining discs are respectively fixed at the rear ends. Six groups of balls are inlaid on the side of the retaining disc away from the front support frame.

[0008] Further, the lifting structure includes an inner support frame, a guide post A and an electric push rod A; The front ends of the thinner-diameter parts of the two groups of workpiece driving shafts are respectively rotatably inserted through the inner support frame. The bottom end of the inner support frame is attached to the moving table. Guide posts A are respectively inserted through the two ends of the bottom, and the middle of the bottom is respectively connected to the telescopic end of the electric push rod A.

[0009] Further, clamping keys B are respectively provided on the thicker-diameter ends of the two groups of workpiece driving shafts, and baffles are fixed. The thinner-diameter rear ends also pass through the sliding grooves of the moving table and then respectively pass through the moving table and are connected with limiting circular plates.

[0010] Furthermore, the motor shafts at the front ends of the double-headed drive motors are respectively connected to the two groups of processing material drive shafts through belt drives, and belt tensioning structures are respectively pressed on the belts.

[0011] Furthermore, the belt tensioning structure includes a tensioning wheel, a U-shaped adjusting frame and a spring; The tensioning wheels are respectively pressed on the upper sides of the two inclined rubber belts of the belt, and the tensioning wheels are respectively rotatably inserted on the U-shaped adjusting frame. Springs are respectively sleeved on the two vertical rods of the U-shaped adjusting frame and penetrate upward through the fixed bracket to be connected with a circular plate.

[0012] A double-screw pump spiral sleeve profile forming milling device provided by the present invention has the following beneficial effects: By means of the double-headed drive motor, the present invention can respectively drive the milling cutter drive shaft and the two groups of processing material drive shafts to rotate, process the two groups of spiral raw materials at the same time, and under the action of the belt tensioning structure, even if the processing material drive shaft is lifted upward, it does not affect the transmission between the double-headed drive motor and the processing material drive shaft. The overall structure of the present invention is relatively simple, and compared with processing by using a machine tool, the manufacturing cost is low.

[0013] In addition, by arranging the front support frame, after the spiral sleeve processing material is inserted onto the processing material drive shaft, under the drive of the electric push rod B, the front support frame can be lifted upward to support the front end of the processing material drive shaft, and the position of the stop disk is adjusted by manually adjusting the screw rod, and the spiral sleeve processing material is clamped by the stop disk and the ball.

[0014] In addition, by arranging the double-headed drive motor, it can drive the two groups of milling cutter drive shafts and the two groups of processing material drive shafts to rotate, and then drive the milling cutters on the two groups of milling cutter drive shafts and the spiral sleeve processing materials on the two groups of processing material drive shafts to rotate. And the first drive motor drives the drive screw to rotate, and under the meshing action of the drive screw and the threaded cylinder, drives the moving table to move backward, so as to mill the spiral sleeve processing material through the milling cutter.

[0015] In addition, by arranging the electric push rod A and the electric push rod B, by using the electric push rod A and the electric push rod B under the same processing material drive shaft, after the milling cutter processes the spiral sleeve processing material for one pass, the processing material drive shaft can be driven to lift upward by a certain distance, and under the action of the belt tensioning structure, the belt is always in a tensioned state, so that the profile of the spiral sleeve processing material is processed and formed after multiple processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0017] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0018] In the attached picture: Figure 1 A schematic diagram showing the overall structure of the present invention; Figure 2 The present invention shows Figure 1 The enlarged structural diagram at A in the middle; Figure 3 The present invention shows Figure 1 The schematic diagram of the structure is a side view on the left side of the middle; Figure 4 The present invention shows Figure 1 A schematic diagram of the structure after the upper end and the vertical end of the middle fixed bracket are cut away and the outer vertical plates inside and outside the moving platform are removed; Figure 5 The present invention shows Figure 4 The enlarged structural diagram at B in the middle; Figure 6 The present invention shows Figure 4 Middle right view structural diagram; Figure 7 The present invention shows Figure 4 Schematic diagram of the structure from top view; Figure 8 The present invention shows Figure 1 A schematic diagram of the structure when a set of milling cutters and spiral sleeves are removed from the workpiece; Figure 9 The present invention shows Figure 8 Enlarged structural diagram at point C in the middle.

[0019] Reference numerals list 1. Base; 101. First drive motor; 102. Drive screw; 2. Fixed bracket; 201. Double-head drive motor; 202. Milling cutter drive shaft; 2021. Positioning key A; 2022. Milling cutter; 2023. Locking sleeve; 20231. Paste plate; 3. Moving table; 301. Threaded barrel; 302. Processing material drive shaft; 3021. Positioning key B; 3022. Baffle plate; 303. Inner support frame; 3031. Guide column A; 3032. Electric push rod A; 304. Front support frame; 3041. Guide column B; 3042. Electric push rod B; 3043. Manual adjustment screw; 30431. Baffle plate; 305. Slide; 4. Tensioning wheel; 401. U-shaped adjustment frame; 402. Spring. DETAILED DESCRIPTION

[0020] In order to make the purpose, scheme and advantages of the technical solution of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present invention. Unless otherwise specified, the terms used herein have the usual meanings in the art. The same reference numerals in the drawings represent the same components.

[0021] Example 1: Please refer to Figures 1 to 9 : The present invention proposes a twin-screw pump spiral sleeve profile forming milling processing device, comprising: a base 1, a driving screw 102, a fixed bracket 2 and a moving platform 3; A first driving motor 101 is installed at the rear end of the base 1, and the front end of the first driving motor 101 is connected to the driving screw 102, the moving platform 3 is slidably installed on the base 1, a threaded barrel 301 is installed on the inner bottom side of the moving platform 3, and the driving screw 102 is also connected to the threaded barrel 301 through threaded engagement, two groups of processing material driving shafts 302 are rotatably mounted on the moving platform 3, and the two groups of processing material driving shafts 302 are generally of a structure with a thick front end diameter and a thin rear end diameter, a supporting structure is also provided at the lower side of the front end of the thick diameter part of the two groups of processing material driving shafts 302, and the thin diameter part of the two groups of processing material driving shafts 302 is at the front end of the thin diameter part. A lifting structure is also provided at the end. The fixed bracket 2 is a U-shaped structure as a whole and is fixed on the base 1. A double-headed driving motor 201 is installed at the top rear end of the fixed bracket 2. Two groups of milling cutter driving shafts 202 are rotatably mounted on the inner side of the upper end of the fixed bracket 2, and the two groups of milling cutter driving shafts 202 are respectively inclined to the lower processing material driving shaft 302, and the rear ends of the milling cutter driving shafts 202 are transmission-connected to the motor shaft at the rear end of the double-headed driving motor 201, and the front ends of the two groups of milling cutter driving shafts 202 are respectively provided with positioning keys A2021, and the front ends of the milling cutter driving shafts 202 are respectively installed with milling cutters 2022 through the positioning keys A2021.

[0022] In the embodiment of the present invention, Figure 8 and Figure 9 As shown, the front and rear sides of the locking keys A2021 on the two groups of milling cutter drive shafts 202 are respectively screwed with locking sleeves 2023 through threads, and the locking sleeves 2023 are provided with six groups of affixed plates 20231 on the side close to the milling cutter 2022, so that when the milling cutter 2022 is inserted into the milling cutter drive shaft 202, the milling cutter 2022 can be engaged with the milling cutter drive shaft 202 under the action of the locking keys A2021, and the locking sleeve 2023 on the rear side of the milling cutter 2022 can be rotated, and the affixed plates 20231 are attached to the rear side of the milling cutter 2022, and another group of locking sleeves 2023 is screwed into the front end of the milling cutter drive shaft 202, so that the affixed plates 20231 on the group of locking sleeves 2023 are attached to the front side of the milling cutter 2022, and the milling cutter 2022 is locked and locked.

[0023] In the embodiment of the present invention, Figure 2, Figure 8 As shown in Figure 9 , the support structure includes a front support frame 304, a guide post B3041 and an electric push rod B3042; a placement groove for the processing material drive shaft is provided at the top of the front support frame 304, the two ends of the bottom are respectively inserted with the guide post B3041, the middle of the bottom is respectively connected to the telescopic ends of the electric push rod B3042, and the bottom ends of the guide post B3041 and the electric push rod B3042 are respectively fixed to the inner bottom of the moving table 3. Manual adjustment screws 3043 are respectively installed at the two ends of the top side of the front support frame 304 through internal threaded holes. The front ends of the manual adjustment screws 3043 are respectively connected with adjustment handwheels, and the rear ends are respectively fixed with stop disks 30431. Six groups of balls are inlaid on the side of the stop disk 30431 away from the front support frame 304. After inserting the spiral sleeve processing material onto the processing material drive shaft 302 and engaging with the positioning key B3021, the front support frame 304 is lifted upward by the electric push rod B3042, so that the placement groove for the processing material drive shaft at the top of the front support frame 304 is engaged with the front end of the processing material drive shaft 302 to support the front end of the processing material drive shaft 302, and then the position of the stop disk 30431 is adjusted by the manual adjustment screw 3043, and the spiral sleeve processing material is positioned by using the stop disk 30431 and the balls.

[0024] In the embodiment of the present invention, as Figure 1 , Figure 4 and Figure 6 shown, the lifting structure includes an inner support frame 303, a guide post A3031 and an electric push rod A3032; the front ends of the thinner parts of the two processing material drive shafts 302 are respectively rotatably inserted into the inner support frame 303. The bottom end of the inner support frame 303 is attached to the moving table 3, the two ends of the bottom are respectively inserted with the guide post A3031, and the middle of the bottom is respectively connected to the telescopic ends of the electric push rod A3032, which is convenient for lifting the processing material drive shaft 302 upward by the electric push rod A3032 and the electric push rod B3042 under the same processing material drive shaft 302.

[0025] In the embodiment of the present invention, as Figure 2 , Figure 8 and Figure 9 shown, positioning keys B3021 are respectively provided on the thicker ends of the two processing material drive shafts 302, and baffles 3022 are fixed. The thinner rear ends also pass through the sliding grooves 305 of the moving table 3 and then pass through the moving table to be connected with limiting circular plates, which is convenient for inserting the spiral sleeve processing material onto the processing material drive shaft 302 and engaging with the positioning key B3021, and is also convenient for lifting the processing material drive shaft 302 upward by the electric push rod A3032 and the electric push rod B3042 under the same processing material drive shaft 302.

[0026] In the embodiment of the present invention, as Figure 4 and Figure 5As shown in the figure, the motor shafts at the front ends of the double-headed drive motors 201 are also respectively connected to two groups of processing material drive shafts 302 through belt drives, and belt tensioning structures are respectively pressed on the belts. The belt tensioning structures include tensioning wheels 4, U-shaped adjustment brackets 401 and springs 402; the tensioning wheels 4 are respectively pressed on the upper sides of the two inclined rubber belts of the belt, and the tensioning wheels 4 are respectively rotatably inserted into the U-shaped adjustment brackets 401. Springs 402 are respectively sleeved on the two vertical rods of the U-shaped adjustment bracket 401 and pass upward through the fixed bracket 2 to be connected with a round plate. When the electric push rods A3032 and electric push rods B3042 under the same processing material drive shaft 302 lift the processing material drive shaft 302 upward, under the action of the belt tensioning structure, the belt can always be in a tensioned state, thus not affecting the transmission between the double-headed drive motor 201 and the processing material drive shaft 302.

[0027] Specific usage and functions of this embodiment: In the present invention, Insert the spiral sleeve processing material onto the processing material drive shaft 302 and engage it with the positioning key B3021. Lift the front support 304 upward through the electric push rod B3042, so that the processing material drive shaft placement groove at the top of the front support 304 is engaged with the front end of the processing material drive shaft 302 to support the front end of the processing material drive shaft 302. Then, adjust the position of the retaining disc 30431 by manually adjusting the screw 3043, and use the retaining disc 30431 and the ball to position the spiral sleeve processing material; Insert the milling cutters 2022 into the front ends of the milling cutter drive shafts 202 respectively and engage them with the positioning key A2021. Adjust the position of the milling cutters 2022 so that the milling cutters 2022 are located on the top side of the rear end of the spiral sleeve processing material. Then rotate the locking sleeve 2023 at the rear of the milling cutter 2022, stick the attaching plate 20231 to the rear side of the milling cutter 2022, and screw another group of locking sleeves 2023 into the front end of the milling cutter drive shaft 202, so that the attaching plate 20231 on this group of locking sleeves 2023 is stuck to the front side of the milling cutter 2022 to lock and hold the milling cutter 2022; Drive the two groups of milling cutter drive shafts 202 and the two groups of processing material drive shafts 302 to rotate through the double-headed drive motor 201, thereby driving the milling cutters 2022 on the two groups of milling cutter drive shafts 202 and the spiral sleeve processing materials on the two groups of processing material drive shafts 302 to rotate. Drive the drive screw 102 to rotate through the first drive motor 101, and drive the moving table 3 to move backward under the meshing action of the drive screw 102 and the threaded barrel 301, so as to perform a first milling on the spiral sleeve processing material through the milling cutter 2022; Utilize the electric push rod A3032 and the electric push rod B3042 under the same processing material driving shaft 302. After the milling cutter 2022 processes the spiral sleeve processing material for one pass, drive the processing material driving shaft 302 to lift upward by a certain distance, and under the action of the belt tensioning structure, keep the belt always in a tensioned state, so as to process the profile of the spiral sleeve processing material into shape through multiple deep milling processes.

[0028] In this article, the following points need to be noted: 1. The attached drawings of the embodiments of the present invention only relate to the structures involved in the embodiments of the present invention, and other structures can refer to the general design.

[0029] 2. Without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0030] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. A spiral sleeve profile forming milling device for a twin-screw pump, comprising: A base (1), a drive screw (102), a fixed bracket (2) and a moving platform (3); The invention is characterized in that a first driving motor (101) is installed at the rear end of the base (1), and the front end of the first driving motor (101) is connected to a driving screw (102); the moving platform (3) is slidably installed on the base (1); a threaded barrel (301) is installed on the inner bottom side of the moving platform (3), and the driving screw (102) is also connected to the threaded barrel (301) through threaded meshing; two groups of processing material driving shafts (302) are rotatably mounted on the moving platform (3), and the two groups of processing material driving shafts (302) are generally of a structure with a thick front end diameter and a thin rear end diameter; a supporting structure is further provided at the lower side of the front end of the thick diameter portion of the two groups of processing material driving shafts (302); and the diameter of the two groups of processing material driving shafts (302) is The front end of the thin part is also provided with a lifting structure, the fixed bracket (2) is a U-shaped structure as a whole, and is fixed on the base (1), a double-headed driving motor (201) is installed at the top rear end of the fixed bracket (2), two groups of milling cutter driving shafts (202) are rotatably mounted on the inner side of the upper end of the fixed bracket (2), and the two groups of milling cutter driving shafts (202) are respectively inclined with the lower processing material driving shaft (302), and the rear ends of the milling cutter driving shafts (202) are drivingly connected with the motor shaft at the rear end of the double-headed driving motor (201), and the front ends of the two groups of milling cutter driving shafts (202) are respectively provided with a locking key A (2021), and the front ends of the milling cutter driving shafts (202) are respectively installed with milling cutters (222) through the locking key A (221).

2. The forming milling device for the spiral sleeve profile of a twin-screw pump according to claim 1, characterized in that: The front and rear sides of the locking keys A (2021) on the two sets of milling cutter drive shafts (202) are respectively screwed with locking sleeves (2023) via threads, and six sets of sticking plates (20231) are provided on one side of the locking sleeve (2023) close to the milling cutter (222).

3. A spiral sleeve profile forming milling device for a twin-screw pump according to claim 1, characterized in that: The support structure comprises a front support frame (304), a guide column B (3041) and an electric push rod B (3042); The top of the front support frame (304) is provided with a processing material drive shaft placement groove, and the two ends of the bottom are respectively inserted with guide columns B (3041), and the middle of the bottom is respectively connected to the telescopic end of the electric push rod B (3042), and the bottom ends of the guide column B (3041) and the electric push rod B (3042) are respectively fixed to the inner bottom of the moving platform (3).

4. A spiral sleeve profile forming milling device for a twin-screw pump according to claim 3, characterized in that: Manual adjustment screws (3043) are installed at both ends of the top side of the front support frame (304) through internal threaded holes, the front ends of the manual adjustment screws (3043) are connected to adjustment hand wheels, and the rear ends are fixed with baffle plates (30431), and six groups of balls are embedded on the side of the baffle plates (30431) away from the front support frame (304).

5. A spiral sleeve profile forming milling device for a twin-screw pump according to claim 1, characterized in that: The lifting structure comprises an inner support frame (303), a guide column A (3031) and an electric push rod A (3032); The front ends of the thinner parts of the two groups of the processing material driving shafts (302) are respectively rotatably inserted into the inner support frames (303). The bottom ends of the inner support frames (303) are attached to the moving table (3). The two ends of the bottom are respectively inserted with guide posts A (3031), and the middle of the bottom is respectively connected to the telescopic ends of the electric push rods A (3032).

6. The forming milling device for the spiral sleeve profile of a twin-screw pump according to claim 5, characterized in that: On the thicker ends of the two groups of the processing material driving shafts (302), clamping keys B (3021) are respectively provided, and baffles (3022) are fixed. The thinner rear ends also pass through the sliding grooves (305) of the moving table (3) and then respectively pass through the moving table and are connected with limiting circular plates.

7. A spiral sleeve profile forming milling device for a twin-screw pump according to claim 1, characterized in that: The motor shafts at the front ends of the double-headed drive motors (201) are also respectively connected to the two groups of processing material driving shafts (302) through belt transmissions, and belt tensioning structures are respectively pressed on the belts.

8. A forming milling device for the spiral sleeve profile of a twin-screw pump according to claim 7, characterized in that: The belt tensioning structure includes a tensioning wheel (4), a U-shaped adjusting frame (401) and a spring (402). The tensioning wheels (4) are respectively pressed on the upper sides of the two inclined rubber belts of the belt, and the tensioning wheels (4) are respectively rotatably inserted into the U-shaped adjusting frames (401). Springs (402) are respectively sleeved on the two vertical rods of the U-shaped adjusting frames (401), and upwardly pass through the fixed brackets (2) and are connected with circular plates.

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