Equal-wall-thickness single-screw pump stator forming device and method thereof

Abstract

The invention relates to the technical field of single-screw pump stator forming, in particular to an equal-wall-thickness single-screw pump stator forming device and a method thereof.The equal-wall-thickness single-screw pump stator forming device comprises a forming base table, a clamping module mounting cavity and a guide sliding groove, and the clamping module mounting cavity and the guide sliding groove are formed in the forming base table; a fixed rack is fixedly arranged on the top of the outer side of the forming base table, a rotary driving module is controlled to rotate reversely, and when the rotary driving module rotates reversely, a threaded driving rod on a telescopic module can be driven to rotate reversely through a transmission assembly to drive the telescopic module to contract. The spiral stator forming core rod can be automatically pulled out of a stator shell in the contraction process of the telescopic module, and in the process that the spiral stator forming core rod is pulled out of the stator shell, the rotary driving module can drive the rotary disc to rotate in a linkage mode, and the spiral stator forming core rod can be rotationally pulled out of the stator shell. Damage to a rubber layer in a stator shell when the spiral stator forming core rod is pulled out can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of single screw pump stator molding, and in particular to a single screw pump stator molding device with uniform wall thickness and a method thereof. Background Art

[0002] Uniform rubber expansion can improve the working stability of the pump. Due to the uniform thickness of the rubber layer, higher precision can be achieved. When the pump is working, the rubber expands evenly under the action of oil and thermal effects, making the stator and rotor more compatible.

[0003] The existing single-screw pump stator molding device generally prepares rubber materials with unequal inner wall thickness in a specific metal hollow cylindrical mold. The rubber expands unevenly during use, the stator can withstand limited pressure when the screw pump conveys the medium, and the working stability is poor. Moreover, after the glue injection is completed, the spiral stator molding core rod cannot be automatically pulled out of the stator shell, which is time-consuming and labor-intensive. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a uniform wall thickness single screw pump stator forming device.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: a uniform wall thickness single screw pump stator forming device, including a forming base, a clamping module installation cavity and a guide slide groove provided on the forming base, a stator shell clamping module is provided in the inner cavity of the clamping module installation cavity, and the stator shell can be quickly clamped and fixed by the stator shell clamping module, a fixed frame is fixedly provided on the top of the outer side of the forming base, a glue injection machine body is fixedly provided on the top of the fixed frame, and a glue outlet is symmetrically provided at the bottom of the glue injection machine body, and a conveying hose is fixedly connected to the end of the glue outlet, and a glue injection mechanism is fixedly connected to the end of the conveying hose away from the glue outlet, and the glue injection machine body is opened, and the glue injection machine body can inject glue into the stator shell through the glue injection mechanism;

[0006] A mounting plate is fixedly provided on the top of the forming base, a telescopic module is fixedly inserted on the mounting plate, one end of the telescopic module is rotatably connected to a turntable through a bearing, a spiral stator forming mandrel is fixedly provided on one side of the turntable, a rotation drive module and a transmission component are respectively provided on the outer side and one end of the telescopic module, and the transmission component is connected between the rotation drive module and the telescopic module. When the rotation drive module rotates, the turntable is driven to rotate and drive the telescopic module to extend through the transmission component. During the extension of the telescopic module, the spiral stator forming mandrel can be inserted into the stator housing for assembly, and the spiral stator forming mandrel is assembled. After completion, the glue injection mechanism is controlled to descend, and then the glue injection machine body is opened to inject glue into the stator shell. After injection molding, a stator rubber layer of equal wall thickness can be prepared on the inner wall of the stator shell. After the preparation of the stator rubber layer of equal wall thickness is completed, the rotary drive module is controlled to rotate in the opposite direction. When the rotary drive module rotates in the opposite direction, the telescopic module can be driven to contract. During the contraction of the telescopic module, the spiral stator forming core rod can be automatically pulled out of the stator shell. During the process of pulling out the spiral stator forming core rod from the stator shell, the rotary drive module is linked to drive the turntable to rotate, and the spiral stator forming core rod can be pulled out of the stator shell while rotating.

[0007] Preferably, the stator housing clamping module includes a driving motor fixedly mounted at one end of the forming base, the end portion of the driving motor output shaft is fixedly connected to a first screw rod, one end of the first screw rod is fixedly connected to a second screw rod through a coupling, the second screw rod and the outer side of the first screw rod are both threadedly connected to a driving screw sleeve, a connecting slide rod is fixedly provided on the top of the driving screw sleeve, a stator housing clamping plate is fixedly provided on the top of the connecting slide rod, and a forming mandrel plug hole is provided on a group of stator housing clamping plates connected to the second screw rod, when the driving motor drives the first screw rod and the second screw rod to rotate forward and reversely, the two groups of driving screw sleeves can be driven to move relative to or away from each other, and the stator housing can be quickly clamped and fixed by the stator housing clamping plate;

[0008] The first screw rod and the second screw rod are both rotatably arranged in the inner cavity of the clamping module installation cavity through bearings, and the thread direction on the first screw rod is opposite to the thread direction on the second screw rod.

[0009] Preferably, the glue injection mechanism includes a glue gun fixedly connected to the bottom end of the delivery hose, a lifting plate and a rectangular slide groove provided on the lifting plate, and the glue gun is movably inserted in the inner cavity of the rectangular slide groove, a limit baffle is fixedly sleeved on the outer side of the middle part of the glue gun, and a locking nut is threadedly connected to the outer side of the top end of the glue gun above the limit baffle, and an electric telescopic rod is fixedly connected between the top of the lifting plate and the glue injection machine body. After loosening the locking nut, the position of the glue gun can be adjusted so that the glue gun can correspond to the glue injection hole on the stator housing. After the spiral stator forming core rod is assembled, the glue gun on the glue injection mechanism is controlled to descend by the electric telescopic rod, so that the bottom end of the glue gun extends into the glue injection hole on the stator housing, and then the glue injection machine body is opened to inject glue into the stator housing, and after injection molding, a stator rubber layer of equal wall thickness can be obtained on the inner wall of the stator housing.

[0010] Preferably, the telescopic module includes a hollow sleeve rod fixedly inserted on the mounting plate and a threaded driving rod rotatably inserted in the hollow sleeve rod through a bearing. The outer side of the threaded driving rod is connected to a threaded cylinder by a thread. A guide assembly is provided between the outer side of the threaded cylinder and the hollow sleeve rod. When the rotary driving module rotates forward and reversely, the threaded driving rod on the telescopic module can be driven to rotate forward and reversely through the transmission assembly. The forward and reverse rotation of the threaded driving rod can drive the telescopic module to extend or contract, which is convenient for inserting and removing the spiral stator forming core rod.

[0011] Preferably, the guide assembly consists of a guide slide and a guide cam, and the guide slide and the guide cam are respectively arranged on the inner side of the hollow sleeve and the outer side of the threaded tube. The threaded tube can be guided and limited by the guide slide and the guide cam, so that the threaded tube can be extended and retracted smoothly.

[0012] Preferably, the rotary drive module includes a rotary motor fixedly mounted on the top of the forming base and a driven gear rotatably sleeved on the outside of the hollow sleeve rod, the end of the rotary motor output shaft is fixedly connected to a driving rod, one end of the driving rod passes through the mounting plate and is connected to a driving gear, and the driving gear is meshed with the driven gear, and a telescopic assembly is connected between the driven gear and the turntable. During the process of pulling out the spiral stator forming mandrel from the stator housing, the rotary motor on the rotary drive module can drive the spiral stator forming mandrel to rotate through the linkage of the driving gear and the driven gear, so that the spiral stator forming mandrel can be pulled out of the stator housing while rotating. After the spiral stator forming mandrel is pulled out of the stator housing, the stator housing clamping module is controlled to stop clamping the stator housing, and the stator housing can be removed.

[0013] Preferably, the telescopic assembly includes a hollow rod and a solid rod with one end inserted into the hollow rod, and the hollow rod and the solid rod are respectively fixedly connected to one side of the driving gear and one side of the turntable.

[0014] Preferably, the transmission assembly comprises a first pulley fixedly sleeved on the outside of the driving rod and a second pulley fixedly arranged at one end of the threaded driving rod, and a transmission belt is connected between the second pulley and the first pulley.

[0015] A method for molding a stator of a single screw pump with uniform wall thickness adopts the above-mentioned device for molding a stator of a single screw pump with uniform wall thickness, and comprises the following steps:

[0016] S1. The stator shell is made into a twist shape by special equipment, so that its pitch and spiral direction correspond to the parameters of the ordinary stator, and then the inner wall of the stator shell is derusted and degreased. After the derusting and degreasing treatment is completed, the stator shell is placed under the glue injection mechanism and then clamped and fixed by the stator shell clamping module;

[0017] S2. After the stator housing is clamped and fixed, the rotating drive module is opened. When the rotating drive module rotates, the threaded drive rod on the telescopic module is driven to rotate through the transmission component to drive the telescopic module to extend. During the extension of the telescopic module, the spiral stator forming mandrel is inserted into the stator housing for assembly. After the spiral stator forming mandrel is assembled, the glue injection mechanism is controlled to descend so that the bottom end of the glue gun on the glue injection mechanism extends into the glue injection hole on the stator housing. Then, the glue injection machine body is opened to inject glue into the stator housing. After injection molding, a stator rubber layer with equal wall thickness can be obtained on the inner wall of the stator housing;

[0018] S3. After the preparation of the stator rubber layer of equal wall thickness is completed, the rotary drive module is controlled to rotate in the opposite direction. When the rotary drive module rotates in the opposite direction, the threaded drive rod on the telescopic module is driven to rotate in the opposite direction through the transmission component to drive the telescopic module to contract. During the contraction of the telescopic module, the spiral stator forming core rod can be automatically pulled out of the stator shell. During the process of pulling out the spiral stator forming core rod from the stator shell, the rotary drive module is linked to drive the turntable to rotate, and the spiral stator forming core rod can be pulled out of the stator shell while rotating. After the spiral stator forming core rod is pulled out of the stator shell, the stator shell clamping module is controlled to stop clamping the stator shell, and the stator shell can be removed.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The stator housing can be quickly positioned and clamped through the stator housing clamping module. After the stator housing is clamped and fixed, the rotary drive module is turned on. The rotary drive module can drive the threaded drive rod on the telescopic module to rotate through the transmission assembly to drive the telescopic module to extend. During the extension of the telescopic module, the spiral stator forming mandrel can be inserted into the stator housing for automatic assembly, which saves time and effort and is easy to operate.

[0021] 2. After the spiral stator forming core rod is automatically assembled, the glue injection mechanism is controlled to descend so that the bottom end of the glue gun on the glue injection mechanism extends into the glue injection hole on the stator shell, and then the glue injection machine body is opened to inject glue into the stator shell. After injection molding, a stator rubber layer of equal wall thickness can be made on the inner wall of the stator shell. The stator rubber layer of equal wall thickness expands evenly during use, which can improve the working stability of the pump and make the stator and rotor more compatible.

[0022] 3. After the preparation of the stator rubber layer of equal wall thickness is completed, the rotary drive module is controlled to rotate in the opposite direction. When the rotary drive module rotates in the opposite direction, the threaded drive rod on the telescopic module can be driven to rotate in the opposite direction through the transmission component to drive the telescopic module to contract. During the contraction of the telescopic module, the spiral stator forming mandrel can be automatically pulled out of the stator shell. During the process of pulling out the spiral stator forming mandrel from the stator shell, the rotary drive module can drive the turntable to rotate in a linked manner, and the spiral stator forming mandrel can be pulled out of the stator shell while rotating, so as to avoid damage to the rubber layer in the stator shell when the spiral stator forming mandrel is pulled out. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a partial structural diagram of one end of the present invention;

[0025] Figure 3 It is a cross-sectional structural diagram of the telescopic module of the present invention;

[0026] Figure 4 The stator housing clamping module structure of the present invention;

[0027] Figure 5 For the present invention Figure 3 A schematic diagram of the structure enlargement at point A;

[0028] Figure 6 For the present invention Figure 4 A magnified schematic diagram of the structure at point B in FIG.

[0029] In the figure: 1. Forming base; 2. Clamping module installation cavity; 3. Guide slide; 4. Stator housing clamping module; 5. Fixed frame; 6. Glue injection machine body; 7. Glue outlet; 8. Delivery hose; 9. Glue injection mechanism; 10. Mounting plate; 11. Telescopic module; 12. Turntable; 13. Spiral stator forming mandrel; 14. Rotary drive module; 15. Transmission assembly;

[0030] 401, driving motor; 402, first screw rod; 403, second screw rod; 404, driving screw sleeve; 405, connecting slide rod; 406, stator housing clamping plate; 407, forming mandrel plug hole;

[0031] 901, lifting plate; 902, rectangular slide; 903, glue gun; 904, limit baffle; 905, locking nut; 906, electric telescopic rod;

[0032] 1101, hollow sleeve rod; 1102, threaded driving rod; 1103, threaded cylinder; 1104, guide assembly;

[0033] 1401, rotating motor; 1402, driven gear; 1403, driving rod; 1404, driving gear; 1405, telescopic assembly; 14051, hollow rod; 14052, solid rod;

[0034] 1501, first pulley; 1502, second pulley; 1503, transmission belt. DETAILED DESCRIPTION

[0035] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0036] like Figures 1 to 6 The stator forming device of a single screw pump with uniform wall thickness shown in the figure comprises a forming base 1, a clamping module installation cavity 2 and a guide slide groove 3 provided on the forming base 1, a stator shell clamping module 4 is provided in the inner cavity of the clamping module installation cavity 2, and the stator shell can be quickly clamped and fixed by the stator shell clamping module 4, a fixed frame 5 is fixedly provided on the top of the outer side of the forming base 1, a glue injection machine body 6 is fixedly provided on the top of the fixed frame 5, and a glue outlet 7 (such as Figure 6 As shown), the end of the glue outlet 7 is fixedly connected to a delivery hose 8, and the end of the delivery hose 8 away from the glue outlet 7 is fixedly connected to a glue injection mechanism 9. The glue injection machine body 6 is opened, and the glue injection machine body 6 can inject glue into the stator housing through the glue injection mechanism 9;

[0037] A mounting plate 10 is fixedly provided on the top of the forming base 1, and a telescopic module 11 is fixedly inserted on the mounting plate 10. One end of the telescopic module 11 is rotatably connected to a turntable 12 through a bearing, and a spiral stator forming core rod 13 is fixedly provided on one side of the turntable 12. A rotation drive module 14 and a transmission assembly 15 are respectively provided on the outer side and one end of the telescopic module 11, and the transmission assembly 15 is connected between the rotation drive module 14 and the telescopic module 11. When the rotation drive module 14 rotates, the turntable 12 is driven to rotate and drive the telescopic module 11 to extend through the transmission assembly 15. During the extension process of the telescopic module 11, the spiral stator forming core rod 13 can be inserted into the stator housing for assembly, and the spiral stator forming core rod 13 can be inserted into the stator housing for assembly. After the rod 13 is assembled, the glue injection mechanism 9 is controlled to descend, and then the glue injection machine body 6 is opened to inject glue into the stator shell. After injection molding, a stator rubber layer of equal wall thickness can be prepared on the inner wall of the stator shell. After the preparation of the stator rubber layer of equal wall thickness is completed, the rotary drive module 14 is controlled to rotate in the opposite direction. When the rotary drive module 14 rotates in the opposite direction, the telescopic module 11 can be driven to contract. During the contraction of the telescopic module 11, the spiral stator forming core rod 13 can be automatically pulled out of the stator shell. During the process of pulling out the spiral stator forming core rod 13 from the stator shell, the rotary drive module 14 drives the turntable 12 to rotate, so that the spiral stator forming core rod 13 can be pulled out of the stator shell while rotating.

[0038] As a further embodiment of the present invention, the stator housing clamping module 4 includes a driving motor 401 fixedly installed at one end of the forming base 1, the end of the output shaft of the driving motor 401 is fixedly connected to the first screw rod 402, one end of the first screw rod 402 is fixedly connected to the second screw rod 403 through a coupling, the second screw rod 403 and the outer side of the first screw rod 402 are both threadedly connected to a driving screw sleeve 404, a connecting slide rod 405 is fixedly provided on the top of the driving screw sleeve 404, a stator housing clamping plate 406 is fixedly provided on the top of the connecting slide rod 405, and a forming core rod jack 407 is provided on a group of stator housing clamping plates 406 connected to the second screw rod 403, when the driving motor 401 drives the first screw rod 402 and the second screw rod 403 to rotate forward and reversely, the two groups of driving screw sleeves 404 can be driven to move relative to each other or move away from each other, and the stator housing can be quickly clamped and fixed by the stator housing clamping plate 406;

[0039] The first screw rod 402 and the second screw rod 403 are both rotatably disposed in the inner cavity of the clamping module installation cavity 2 through bearings, and the thread direction on the first screw rod 402 is opposite to the thread direction on the second screw rod 403 .

[0040] As a further embodiment of the present invention, the glue injection mechanism 9 includes a glue gun 903 fixedly connected to the bottom end of the delivery hose 8, a lifting plate 901 and a rectangular slide 902 opened on the lifting plate 901, and the glue gun 903 is movably inserted into the inner cavity of the rectangular slide 902, a limit baffle 904 is fixedly sleeved on the outer side of the middle part of the glue gun 903, and a locking nut 905 is threadedly connected to the outer side of the top of the glue gun 903 above the limit baffle 904, and an electric screw is fixedly connected between the top of the lifting plate 901 and the glue injection machine body 6. The position of the glue gun 903 can be adjusted by moving the telescopic rod 906 and loosening the locking nut 905, so that the glue gun 903 can correspond to the glue injection hole on the stator shell. The spiral stator forming core rod 13 is assembled. The glue gun 903 on the glue injection mechanism 9 is controlled to descend by the electric telescopic rod 906, so that the bottom end of the glue gun 903 extends into the glue injection hole on the stator shell, and then the glue injection machine body 6 is opened to inject glue into the stator shell. After injection molding, a stator rubber layer of equal wall thickness can be obtained on the inner wall of the stator shell.

[0041] As a further embodiment of the present invention, the telescopic module 11 includes a hollow sleeve rod 1101 fixedly inserted on the mounting plate 10 and a threaded drive rod 1102 rotatably inserted in the hollow sleeve rod 1101 through a bearing. The outer side of the threaded drive rod 1102 is connected to a threaded cylinder 1103 through a thread. A guide assembly 1104 is provided between the outer side of the threaded cylinder 1103 and the hollow sleeve rod 1101. When the rotating drive module 14 rotates forward and reverse, the threaded drive rod 1102 on the telescopic module 11 can be driven to rotate forward and reverse through the transmission assembly 15. The forward and reverse rotation of the threaded drive rod 1102 can drive the telescopic module 11 to extend or contract, which is convenient for inserting and removing the spiral stator forming core rod 13.

[0042] As a further embodiment of the present invention, the guide assembly 1104 is composed of a guide slide and a guide cam, and the guide slide and the guide cam are respectively arranged on the inner side of the hollow sleeve 1101 and the outer side of the threaded cylinder 1103. The threaded cylinder 1103 can be guided and limited by the guide slide and the guide cam, so that the threaded cylinder 1103 can be smoothly extended and retracted.

[0043] As a further embodiment of the present invention, the rotary drive module 14 includes a rotary motor 1401 fixedly mounted on the top of the forming base 1 and a driven gear 1402 rotatably sleeved on the outside of the hollow sleeve rod 1101, the end of the output shaft of the rotary motor 1401 is fixedly connected to a driving rod 1403, one end of the driving rod 1403 passes through the mounting plate 10 and is connected to a driving gear 1404, and the driving gear 1404 is meshedly connected to the driven gear 1402, and a telescopic assembly 1405 is connected between the driven gear 1402 and the turntable 12. During the process of pulling out the spiral stator forming mandrel 13 from the stator housing, the rotary motor 1401 on the rotary drive module 14 can be pulled out by the driving gear 1404 and the driven gear 1402 are linked to drive the spiral stator forming mandrel 13 to rotate, and the spiral stator forming mandrel 13 can be pulled out of the stator shell while rotating. Because the inner wall of the molded rubber layer will have a spiral conveying cavity, directly pulling out the spiral stator forming mandrel 13 is likely to cause deformation and damage to the spiral conveying cavity on the inner wall of the rubber layer. The spiral stator forming mandrel 13 is pulled out while rotating along the spiral conveying cavity on the inner wall of the rubber layer, which can avoid damage to the rubber layer in the stator shell when the spiral stator forming mandrel 13 is pulled out. After the spiral stator forming mandrel 13 is pulled out from the stator shell, the stator shell clamping module 4 is controlled to stop clamping the stator shell, and the stator shell can be removed.

[0044] As a further embodiment of the present invention, the telescopic component 1405 includes a hollow rod 14051 and a solid rod 14052 with one end inserted into the hollow rod 14051, and the hollow rod 14051 and the solid rod 14052 are respectively fixedly connected to one side of the driving gear 1404 and one side of the turntable 12. The telescopic component 1405 can drive the turntable 12 to rotate without affecting the telescopic module 11.

[0045] As a further embodiment of the present invention, the transmission assembly 15 includes a first pulley 1501 fixedly mounted on the outside of the driving rod 1403 and a second pulley 1502 fixedly arranged at one end of the threaded driving rod 1102, and a transmission belt 1503 is connected between the second pulley 1502 and the first pulley 1501.

[0046] refer to Figure 1 - Figure 6 As shown, a method for forming a stator of a single screw pump with uniform wall thickness comprises the following steps:

[0047] S1. The stator housing is made into a twist shape by special equipment, so that its pitch and spiral direction correspond to the parameters of the ordinary stator, and then the inner wall of the stator housing is derusted and degreased. After the derusting and degreasing treatment is completed, the stator housing is placed under the glue injection mechanism 9 and then clamped and fixed by the stator housing clamping module 4;

[0048] S2. After the stator housing is clamped and fixed, the rotation drive module 14 is opened. When the rotation drive module 14 rotates, the threaded drive rod 1102 on the telescopic module 11 is driven to rotate through the transmission assembly 15, and the telescopic module 11 is driven to extend. During the extension process of the telescopic module 11, the spiral stator forming mandrel 13 is inserted into the stator housing for assembly. After the spiral stator forming mandrel 13 is assembled, the glue injection mechanism 9 is controlled to descend, so that the bottom end of the glue gun 903 on the glue injection mechanism 9 extends into the glue injection hole on the stator housing, and then the glue injection machine body 6 is opened to inject glue into the stator housing. After injection molding, a stator rubber layer with equal wall thickness can be obtained on the inner wall of the stator housing;

[0049] S3. After the preparation of the stator rubber layer of equal wall thickness is completed, the rotary drive module 14 is controlled to rotate in the opposite direction. When the rotary drive module 14 rotates in the opposite direction, the threaded drive rod 1102 on the telescopic module 11 is driven to rotate in the opposite direction through the transmission assembly 15, so as to drive the telescopic module 11 to contract. During the contraction of the telescopic module 11, the spiral stator forming core rod 13 can be automatically pulled out from the stator shell. During the process of pulling out the spiral stator forming core rod 13 from the stator shell, the rotary drive module 14 drives the turntable 12 to rotate, so that the spiral stator forming core rod 13 can be pulled out from the stator shell while rotating. After the spiral stator forming core rod 13 is pulled out from the stator shell, the stator shell clamping module 4 is controlled to stop clamping the stator shell, and the stator shell can be removed.

[0050] Working principle of the present invention:

[0051] During installation and use, the stator housing is placed under the glue injection mechanism 9 and then the stator housing is clamped and fixed by the stator housing clamping module 4. After the stator housing is clamped and fixed, the rotation drive module 14 is opened. When the rotation drive module 14 rotates, the threaded drive rod 1102 on the telescopic module 11 is driven to rotate through the transmission assembly 15, and the telescopic module 11 is driven to extend. During the extension process of the telescopic module 11, the spiral stator forming mandrel 13 can be inserted into the stator housing for assembly. After the spiral stator forming mandrel 13 is assembled, the glue injection mechanism 9 is controlled to descend so that the bottom end of the glue gun 903 on the glue injection mechanism 9 extends into the glue injection hole on the stator housing, and then the glue injection machine body 6 is opened to inject glue into the stator housing for wall preparation, etc. A thick stator rubber layer is prepared. After the preparation of the thick stator rubber layer is completed, the rotary drive module 14 is controlled to rotate in the opposite direction. When the rotary drive module 14 rotates in the opposite direction, the threaded drive rod 1102 on the telescopic module 11 can be driven to rotate in the opposite direction through the transmission component 15 to drive the telescopic module 11 to contract. During the contraction of the telescopic module 11, the spiral stator forming core rod 13 can be automatically pulled out of the stator housing. During the process of pulling out the spiral stator forming core rod 13 from the stator housing, the rotary motor 1401 on the rotary drive module 14 can drive the spiral stator forming core rod 13 to rotate through the driving gear 1404 and the driven gear 1402, so that the spiral stator forming core rod 13 can be pulled out of the stator housing while rotating.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may have various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention to be protected, and the scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A uniform wall thickness single screw pump stator molding device, comprising a molding base (1), a clamping module installation cavity (2) and a guide slot (3) provided on the molding base (1), characterized in that: The inner cavity of the clamping module installation cavity (2) is provided with a stator housing clamping module (4); a fixed frame (5) is fixedly provided on the outer top of the molding base (1); a glue injection machine body (6) is fixedly provided on the top of the fixed frame (5); a glue outlet (7) is symmetrically provided at the bottom of the glue injection machine body (6); a delivery hose (8) is fixedly connected to the end of the glue outlet (7); and a glue injection mechanism (9) is fixedly connected to the end of the delivery hose (8) away from the glue outlet (7); A mounting plate (10) is fixedly provided on the top of the forming base (1), a telescopic module (11) is fixedly inserted on the mounting plate (10), one end of the telescopic module (11) is rotatably connected to a turntable (12) via a bearing, one side of the turntable (12) is fixedly provided with a spiral stator forming mandrel (13), a rotation drive module (14) and a transmission assembly (15) are respectively provided on the outer side and one end of the telescopic module (11), and the transmission assembly (15) is connected between the rotation drive module (14) and the telescopic module (11).

2. The device for forming a stator of a single screw pump with uniform wall thickness according to claim 1, characterized in that: The stator housing clamping module (4) comprises a driving motor (401) fixedly mounted on one end of a forming base (1); a first screw rod (402) is fixedly connected to the end of an output shaft of the driving motor (401); one end of the first screw rod (402) is fixedly connected to a second screw rod (403) via a coupling; the second screw rod (403) and the outer side of the first screw rod (402) are both connected to a driving screw sleeve (404) via threads; a connecting slide rod (405) is fixedly provided on the top of the driving screw sleeve (404); a stator housing clamping plate (406) is fixedly provided on the top of the connecting slide rod (405); and a forming mandrel insertion hole (407) is provided on a group of stator housing clamping plates (406) connected to the second screw rod (403); The first screw rod (402) and the second screw rod (403) are both rotatably arranged in the inner cavity of the clamping module installation cavity (2) via bearings, and the thread direction on the first screw rod (402) is opposite to the thread direction on the second screw rod (403).

3. The device for forming a stator of a single screw pump with uniform wall thickness according to claim 1, characterized in that: The glue injection mechanism (9) comprises a glue gun (903) fixedly connected to the bottom end of the conveying hose (8), a lifting plate (901) and a rectangular slide groove (902) provided on the lifting plate (901), and the glue gun (903) is movably inserted into the inner cavity of the rectangular slide groove (902), a limit baffle (904) is fixedly sleeved on the outer side of the middle part of the glue gun (903), and a locking nut (905) is threadedly connected to the outer side of the top end of the glue gun (903) above the limit baffle (904), and an electric telescopic rod (906) is fixedly connected between the top of the lifting plate (901) and the glue injection machine body (6).

4. The device for forming a stator of a single screw pump with uniform wall thickness according to claim 1, characterized in that: The telescopic module (11) comprises a hollow sleeve rod (1101) fixedly inserted on the mounting plate (10) and a threaded driving rod (1102) rotatably inserted in the hollow sleeve rod (1101) via a bearing, the outer side of the threaded driving rod (1102) being connected to a threaded cylinder (1103) via a thread, and a guide assembly (1104) is provided between the outer side of the threaded cylinder (1103) and the hollow sleeve rod (1101).

5. The device for forming a stator of a single screw pump with uniform wall thickness according to claim 4, characterized in that: The guide assembly (1104) is composed of a guide slide and a guide convex rail, and the guide slide and the guide convex rail are respectively arranged on the inner side of the hollow sleeve rod (1101) and the outer side of the threaded cylinder (1103).

6. The device for forming a stator of a single screw pump with uniform wall thickness according to claim 5, characterized in that: The rotary drive module (14) comprises a rotary motor (1401) fixedly mounted on the top of the molding base (1) and a driven gear (1402) rotatably sleeved on the outside of a hollow sleeve rod (1101); the end of the output shaft of the rotary motor (1401) is fixedly connected to a driving rod (1403); one end of the driving rod (1403) passes through the mounting plate (10) and is connected to a driving gear (1404); the driving gear (1404) and the driven gear (1402) are meshedly connected; and a telescopic assembly (1405) is connected between the driven gear (1402) and the rotating disk (12).

7. The device for forming a stator of a single screw pump with uniform wall thickness according to claim 6, characterized in that: The telescopic assembly (1405) comprises a hollow rod (14051) and a solid rod (14052) with one end inserted into the hollow rod (14051), and the hollow rod (14051) and the solid rod (14052) are respectively fixedly connected to one side of the driving gear (1404) and one side of the rotating disk (12).

8. The device for forming a stator of a single screw pump with uniform wall thickness according to claim 7, characterized in that: The transmission assembly (15) comprises a first pulley (1501) fixedly sleeved on the outside of the driving rod (1403) and a second pulley (1502) fixedly arranged at one end of the threaded driving rod (1102), and a transmission belt (1503) is connected between the second pulley (1502) and the first pulley (1501).

9. A method for forming a single screw pump stator with uniform wall thickness, characterized in that: The device for forming a stator of a single screw pump with uniform wall thickness as claimed in any one of claims 1 to 8 comprises the following steps: S1. The stator housing is made into a twisted shape by special equipment so that its pitch and spiral direction correspond to the parameters of an ordinary stator, and then the inner wall of the stator housing is derusted and degreased. After the derusting and degreasing treatment is completed, the stator housing is placed under the glue injection mechanism (9) and then clamped and fixed by the stator housing clamping module (4); S2, after the stator shell is clamped and fixed, the rotating drive module (14) is opened. When the rotating drive module (14) rotates, the threaded drive rod (1102) on the telescopic module (11) is driven to rotate through the transmission component (15), driving the telescopic module (11) to extend. During the extension of the telescopic module (11), the spiral stator forming core rod (13) is inserted into the stator shell for assembly. After the assembly of the spiral stator forming core rod (13) is completed, the glue injection mechanism (9) is controlled to descend so that the bottom end of the glue gun (903) on the glue injection mechanism (9) extends into the glue injection hole on the stator shell, and then the glue injection machine body (6) is opened to inject glue into the stator shell. After injection molding, a stator rubber layer with equal wall thickness can be obtained on the inner wall of the stator shell; S3. After the stator rubber layer of equal wall thickness is prepared, the rotary drive module (14) is controlled to rotate in the opposite direction. When the rotary drive module (14) rotates in the opposite direction, the transmission assembly (15) drives the threaded drive rod (1102) on the telescopic module (11) to rotate in the opposite direction, thereby driving the telescopic module (11) to contract. During the contraction of the telescopic module (11), the spiral stator forming core rod (13) can be automatically pulled out from the stator shell. During the process of pulling out the spiral stator forming core rod (13) from the stator shell, the rotary drive module (14) drives the turntable (12) to rotate, thereby pulling out the spiral stator forming core rod (13) from the stator shell while rotating. After the spiral stator forming core rod (13) is pulled out from the stator shell, the stator shell clamping module (4) is controlled to stop clamping the stator shell, and the stator shell can be removed.

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