Cutting device for producing metal pump body of double screw pump

Abstract

The application relates to the technical field of pump body cutting, and discloses a cutting device for double-screw pump metal pump body production, which comprises a cutting unit and a clamp module, the top of the clamp module is provided with a self-adaptive clamping assembly, the self-adaptive clamping assembly comprises a plurality of telescopic rods I fixedly connected to the top of the clamp module, the telescopic end of each telescopic rod I is fixedly connected with a driving block, the top of the clamp module is symmetrically connected with a matching block in a sliding mode, the side wall of each driving block is fixedly connected with a driving strip, and the side of each matching block close to the driving block is provided with a driven groove, when the pump body is pressed down, the driving block can drive the matching blocks on the two sides to move close to the pump body and clamp the pump body, the design realizes self-locking function by utilizing the gravity of the pump body, the traditional clamping mode of placing and locking by manual operation or the complex mode of adopting an additional driving source is abandoned, the operation process is extremely simple, the manpower and time cost are greatly saved, and the requirement for the skills of the operator is reduced.

Description

Technical Field

[0001] This invention relates to the field of pump body cutting technology, specifically a cutting device for the production of metal pump bodies for twin-screw pumps. Background Technology

[0002] The cutting device used in the production of metal pump bodies for twin-screw pumps is mainly applied after the metal pump body is cast. It can accurately remove excess parts such as gates, risers and flash from the pump body. It is a key production equipment to ensure the dimensional accuracy and surface quality of the pump body and improve product performance.

[0003] However, existing pump body production and cutting equipment still has some problems: First, the operation of clamping the pump body in existing pump body production and cutting equipment has many drawbacks. Traditional clamping methods often rely on manual operation for placement and locking. This process not only consumes a lot of manpower and time costs, but also requires high skills from the operators. Even if an additional drive source is used to achieve clamping, although it reduces manpower input to a certain extent, it brings a significant increase in equipment costs. This undoubtedly increases the company's total production cost and reduces the market competitiveness of the product.

[0004] More importantly, after casting, the surface of the metal pump body of the twin-screw pump inevitably has burrs, risers and other protruding impurities. During the placement of the pump body, these protrusions may affect the fit between the pump body and the clamping device, causing the actual placement position of the pump body to deviate from the expected coordinates. During the clamping process, due to the obstruction of these protrusions, the clamping device has difficulty in accurately positioning the pump body, further aggravating the inaccuracy of the pump body coordinates.

[0005] If the pump body is not positioned accurately, the cutting device will be unable to operate according to the preset cutting path when performing the cutting task. This may lead to over-cutting, causing some useful material of the pump body to be mistakenly removed. This not only wastes material but may also affect the overall structural strength and dimensional accuracy of the pump body.

[0006] Secondly, the generation of debris is inevitable during the pump body cutting process. However, the existing cutting devices are clearly inadequate in handling debris. When debris falls to the ground, it is relatively easy to clean it up with conventional cleaning tools, such as brooms and vacuum cleaners. However, cleaning debris from the clamps of the cutting device is extremely difficult.

[0007] As a key component for fixing the pump body, the fixture often has a complex structure with many gaps, grooves, and other difficult-to-clean areas. Cutting debris can easily get stuck in these areas and is difficult to remove by simple means. Over time, these debris can adversely affect the performance and accuracy of the fixture. On the one hand, the accumulation of debris may affect the clamping accuracy of the fixture on the pump body, because the debris may occupy a certain amount of space, causing the fixture to not fit tightly against the pump body surface, thus causing the pump body to shake during the cutting process and further affecting the cutting quality. On the other hand, some metal debris may rust in a humid environment, which will not only damage the surface of the fixture, but may also release rust particles, contaminating the surface of the pump body and reducing the surface quality of the product.

[0008] Therefore, this invention proposes a cutting device for the production of metal pump bodies for twin-screw pumps. Summary of the Invention

[0009] The purpose of this invention is to provide a cutting device for the production of metal pump bodies for twin-screw pumps, so as to solve the problems mentioned in the background art.

[0010] To achieve the above objectives, the present invention provides the following technical solution: a cutting device for producing metal pump bodies of twin-screw pumps, comprising a cutting unit and a clamping module, wherein an adaptive clamping assembly is provided above the clamping module, the adaptive clamping assembly comprising a plurality of telescopic rods fixedly connected to the top of the clamping module, an active block being fixedly connected to the telescopic end of the telescopic rod, a mating block being symmetrically slidably connected to the top of the clamping module, an active strip being fixedly connected to the sidewall of each active block, and a driven groove being provided on the side of each mating block near the active block; When the active block is pushed down by the pump body, the active block can drive the mating block to move toward its center through the inclined surface cooperation of the active bar and the driven groove, thereby clamping the pump body.

[0011] Preferably, each of the mating blocks has a number of telescopic rods fixedly connected to its top.

[0012] Preferably, each of the mating blocks has a magnetic block fixedly connected inside, and the top of the clamping module has a protective shell fixedly connected symmetrically. Each of the protective shells has a block-shaped electromagnet fixedly connected inside, and the block-shaped electromagnet is connected to the power supply of the device. When the block electromagnet is energized, it generates a magnetic field opposite to that of the magnetic block; when the block electromagnet is de-energized, it does not possess magnetism.

[0013] Preferably, a spring is symmetrically fixedly connected inside the active block, a sliding plate is fixedly connected to the outer surface of the spring, and an abutment block is fixedly connected to the top of the sliding plate.

[0014] Preferably, the side of the contact block closest to the center of the active block is arc-shaped.

[0015] Preferably, the sliding plate is slidably connected inside the active block, and an external displacement sensing module is installed on the side of the sliding plate away from the center of the active block.

[0016] Preferably, the cutting unit is equipped with a protective shell, the bottom of the clamping module is mounted on the inner surface of the protective shell, and a control box is mounted on the inner surface of the protective shell.

[0017] Preferably, the clamp module is provided with an adaptive cleaning component on its exterior. The adaptive cleaning component includes air nozzles symmetrically installed on the top of the clamp module. The bottom of each air nozzle is fixedly connected to a flexible hose, and the side of the flexible hose away from the air nozzle is connected to an external negative pressure device.

[0018] Preferably, the outer surface of each sliding plate is rotatably connected to a rotating seat, each air nozzle is rotatably connected to the outer surface of the clamp module, the outer surface of each air nozzle is rotatably connected to a sliding rod, the sliding rod is slidably connected inside the rotating seat, a lead screw is symmetrically rotatably connected to the side wall of the control box, a torsion spring is fixedly connected between the lead screw and the control box, and the flexible hose is wound around the outer surface of the lead screw.

[0019] Preferably, the outer surface of the clamp module is provided with a groove, and the side of the hose near the sliding rod is fixedly connected to the inside of the groove.

[0020] Preferably, the block electromagnet is linked to the start / stop signal of the cutting unit; the block electromagnet is de-energized when the cutting unit starts and energized when the cutting unit stops.

[0021] Preferably, the midpoint between the two external displacement sensing modules is defined as the positioning origin of the pump body.

[0022] Preferably, when the cutting unit approaches a certain side nozzle, that side nozzle switches to negative pressure suction mode, and the opposite side nozzle switches to blowing mode.

[0023] Preferably, an external robotic arm is installed on the inner surface of the protective shell, and the external robotic arm is used to clamp the pump body to the clamping module.

[0024] Compared with the prior art, the beneficial effects of the present invention are: 1. When the pump body is pressed down, the active block can drive the mating blocks on both sides to move closer to the pump body and clamp it. This design uses the pump body's own gravity to achieve a self-locking function, eliminating the traditional clamping method that relies on manual operation for placement and locking, or the complex mode of using an additional drive source. The operation process is therefore extremely simple, greatly saving manpower and time costs, and reducing the skill requirements for operators. At the same time, the telescopic rod 2 can be flexibly extended and adjusted. When facing burrs, risers, or other uneven areas on the pump body surface, the telescopic rod 2 can adaptively change its length to ensure that the mating blocks are fully in contact with the pump body surface, achieving stable clamping and avoiding the problem of unstable clamping caused by uneven pump body surface.

[0025] 2. When the cutting unit is turned off, the block electromagnet is energized, generating a magnetic field opposite to that of the magnetic block. The two attract each other, allowing the mating block to easily detach from the pump body and automatically release the lock on the pump body. This function avoids the cumbersome process of unlocking the lock that requires manual or additional operation in traditional devices, improves production efficiency, and reduces labor intensity.

[0026] 3. When the pump body presses down and the active block descends, the pump body contacts the abutting block, causing the spring to compress and the sliding plate to slide inside the active block. At this time, the external displacement sensing module will monitor the displacement in real time and define the midpoint between the two external displacement sensing modules as the positioning origin of the pump body. By analyzing and calculating the data from the two external displacement sensing modules, the center point of the pump body can be accurately determined. This allows the cutting device to operate precisely according to the preset cutting path when performing the cutting task, avoiding over-cutting or under-cutting caused by inaccurate pump body positioning, and ensuring the dimensional accuracy and surface quality of the pump body.

[0027] 4. When the coordinates of the pump body change due to various factors, the sliding plate will shift accordingly. Since the outer surface of the sliding plate is rotatably connected to the rotating seat, and the rotating seat is rotatably connected to the sliding rod, and the sliding rod is rotatably connected to the nozzle, the nozzle can respond to the displacement change of the sliding plate in real time and synchronously change its own angle. Furthermore, based on the negative pressure suction and blowing functions of the nozzles on both sides, during the cutting process, the nozzle on the side closer to the cutting unit switches to the negative pressure suction mode. The strong suction can quickly remove the debris generated by cutting and prevent it from splashing everywhere. The nozzle on the opposite side switches to the blowing mode. The airflow can blow away the debris that may drift towards the clamping module, thereby minimizing the possibility of debris falling onto the clamping module.

[0028] 5. When the clamp module rotates or moves, the lead screw will rotate accordingly. Since the hose is wrapped around the outer surface of the lead screw and the side of the hose near the sliding rod is fixedly connected to the inside of the slide groove, the rotation of the lead screw will cause the hose to release or shorten its length. The presence of the torsion spring ensures that the lead screw can maintain a certain initial state when it is not subjected to external force, making the hose length adjustment more stable and precise. This design ensures that the hose can always follow closely during the movement of the clamp module, without problems such as pulling or tangling, ensuring the normal operation of the nozzle and maintaining the stable operation of the entire cleaning system. Attached Figure Description

[0029] Figure 1 This is a frontal perspective three-dimensional schematic diagram of the main structure of the present invention; Figure 2 This is a cross-sectional perspective view of the adaptive clamping component of the present invention; Figure 3 For the present invention Figure 2 Enlarged 3D schematic diagram of the structure at point A in the middle; Figure 4 For the present invention Figure 2 Enlarged 3D schematic diagram of the structure at point B; Figure 5 For the present invention Figure 2 Enlarged 3D schematic diagram of the structure at point C; Figure 6 This is a three-dimensional cross-sectional view of the adaptive clamping component of the present invention from another angle; Figure 7 For the present invention Figure 6 Enlarged 3D schematic diagram of the structure at point D; Figure 8 This is a three-dimensional schematic diagram of the active block and the mating block of the present invention; Figure 9 This is a partial three-dimensional schematic diagram of the adaptive cleaning component of the present invention; Figure 10 For the present invention Figure 9 Enlarged 3D schematic diagram of the structure at point E in the middle; Figure 11 This is a partial three-dimensional schematic diagram of the adaptive cleaning component of the present invention from another angle.

[0030] In the picture: 11. Cutting unit; 12. Fixture module; 13. Control box; 14. Protective shell.

[0031] The adaptive clamping assembly includes: 21, telescopic rod one; 22, active block; 221, active bar; 23, mating block; 231, driven groove; 24, telescopic rod two; 25, magnetic block; 26, protective shell; 27, block-shaped electromagnet; 28, spring; 29, sliding plate; 210, abutment block.

[0032] The adaptive cleaning components include: 31, a chute; 32, a rotating seat; 33, an air nozzle; 34, a sliding rod; 35, a hose; 36, a lead screw; and 37, a torsion spring. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0034] It should be noted that the cutting unit 11 only provides the function of cutting the pump body, the clamping module 12 only provides the function of displacement and placing the pump body, the external displacement sensing module only provides the function of detecting the displacement amount, the external robot only provides the function of loading and unloading the pump body, and the external negative pressure device only provides the function of generating negative pressure and reverse blowing. The working principle and specific structure of the above structures are all existing technologies. Therefore, given the universality of the above structures, their specific principles will not be described in detail below.

[0035] Example 1, please refer to as follows Figures 1 to 8 As shown, a cutting device for producing metal pump bodies of twin-screw pumps includes a cutting unit 11 and a clamping module 12. An adaptive clamping assembly is provided above the clamping module 12. The adaptive clamping assembly includes several telescopic rods 21 fixedly connected to the top of the clamping module 12. An active block 22 is fixedly connected to the telescopic end of the telescopic rod 21. A mating block 23 is symmetrically slidably connected to the top of the clamping module 12. An active bar 221 is fixedly connected to the side wall of the active block 22. A driven groove 231 is opened on the side of the mating block 23 near the active block 22. When the driving block 22 is pushed down by the pump body, the driving block 22 can drive the mating block 23 to move towards its center through the inclined surface cooperation of the driving bar 221 and the driven groove 231, thereby clamping the pump body.

[0036] It should be noted that several telescopic rods 24 are fixedly connected to the top of each mating block 23, and a magnetic block 25 is fixedly connected inside each mating block 23. A protective shell 26 is symmetrically fixedly connected to the top of the clamp module 12, and a block-shaped electromagnet 27 is fixedly connected inside each protective shell 26. The block electromagnet 27 is connected to the power supply of the equipment. When the block electromagnet 27 is energized, it generates a magnetic field opposite to that of the magnetic block 25. When the block electromagnet 27 is de-energized, it has no magnetism. A spring 28 is symmetrically fixedly connected inside the active block 22. A sliding plate 29 is fixedly connected to the outer surface of the spring 28. A contact block 210 is fixedly connected to the top of the sliding plate 29. The side of the contact block 210 closest to the center of the active block 22 is arc-shaped. The sliding plate 29 is slidably connected inside the active block 22. An external displacement sensing module is installed on the side of the sliding plate 29 furthest from the center of the active block 22. (Cutting unit) The outer surface of the 11 is equipped with a protective shell 14. The bottom of the clamping module 12 is installed on the inner surface of the protective shell 14. The inner surface of the protective shell 14 is equipped with a control box 13. The block electromagnet 27 is linked with the start and stop signals of the cutting unit 11. When the cutting unit 11 starts, the block electromagnet 27 is de-energized. When the cutting unit 11 stops, the block electromagnet 27 is energized. The midpoint between the two external displacement sensing modules is defined as the positioning origin of the pump body. An external manipulator is installed on the inner surface of the protective shell 14. The external manipulator is used to clamp the pump body to the clamping module 12.

[0037] Specifically, after the cutting unit 11 is started, the entire cutting device begins to operate.

[0038] At this time, the external robotic arm installed on the inner surface of the protective shell 14 transports the pump body to the clamp module 12. At this time, the gravity of the pump body acts on the active block 22, causing the active block 22 to squeeze the telescopic rod 21. The telescopic rod 21 begins to compress, and the active block 22 descends synchronously with the telescopic rod 21.

[0039] Because the active bar 221 on the side wall of the active block 22 has an inclined engagement with the driven groove 231 on the mating block 23, when the active block 22 descends, this inclined engagement causes the mating block 23 to move closer to the pump body along the top of the clamping module 12. The telescopic rod 24 on the top of the mating block 23 plays an important adaptive role in the process of approaching the pump body.

[0040] Since the surface of the pump body inevitably has burrs, risers and other protruding impurities, and the surface is not flat, the telescopic rod 24 will compress or extend according to the shape of the pump body surface to ensure that the mating block 23 can fit tightly with the pump body surface and achieve stable clamping of the pump body. This self-locking clamping method that relies on the pump body's own gravity is not only simple to operate and saves manpower and time costs, but also reduces the skill requirements for operators. It has obvious advantages over traditional clamping methods.

[0041] During the process of the pump body descending and being clamped, the bottom of the pump body will come into contact with the abutment block 210. The side of the abutment block 210 near the middle of the active block 22 is arc-shaped, which can better contact the surface of the pump body. After the abutment block 210 is subjected to force, it drives the sliding plate 29 to slide inside the active block 22, while compressing the spring 28.

[0042] Due to the unevenness of the pump body surface and the possible deviations that may occur during the clamping process of the external robotic arm, the pump body is often difficult to be precisely positioned at the center of the clamping module 12. The deviation in the pump body position will cause different moving distances of the two contact blocks 210 on both sides. The external displacement sensing module installed on the side of the sliding plate 29 away from the center of the active block 22 can detect this displacement difference in real time. By accurately measuring the distance between the two external displacement sensing modules, the new center coordinates of the pump body can be accurately calculated.

[0043] After obtaining the new coordinates, the cutting unit 11 cuts the pump body, avoiding over-cutting or under-cutting caused by inaccurate pump body position, thus ensuring the dimensional accuracy and surface quality of the pump body.

[0044] It should be noted that after the pump body is cut, the cutting unit 11 is turned off. At this time, the block electromagnet 27, which is linked to the start and stop signal of the cutting unit 11, is energized and generates a magnetic field opposite to that of the magnetic block 25. Under the action of the magnetic force, the magnetic block 25 drives the mating block 23 away from the active block 22. The distance between the mating block 23 and the pump body increases, thereby releasing the clamping on the pump body. This automatic unlocking function avoids the cumbersome process of unlocking the pump body that requires manual or additional operation in traditional devices, improves production efficiency, and reduces labor intensity.

[0045] Subsequently, the external robotic arm can remove the cut pump body again and insert a new pump body to be cut, starting a new round of cutting operations.

[0046] Example 2, based on Example 1, please refer to the following... Figures 9 to 11 As shown, the clamp module 12 is provided with an adaptive cleaning component on its exterior. The adaptive cleaning component includes nozzles 33 symmetrically installed on the top of the clamp module 12. The bottom of each nozzle 33 is fixedly connected to a hose 35. The side of the hose 35 away from the nozzle 33 is connected to an external negative pressure device.

[0047] It should be noted that the outer surface of the sliding plate 29 is rotatably connected to the rotating seat 32, the nozzles 33 are rotatably connected to the outer surface of the clamp module 12, the outer surface of the nozzles 33 is rotatably connected to the sliding rod 34, the sliding rod 34 is slidably connected to the inside of the rotating seat 32, the side wall of the control box 13 is symmetrically rotatably connected to the lead screw 36, the lead screw 36 and the control box 13 are fixedly connected to the torsion spring 37, the hose 35 is wound around the outer surface of the lead screw 36, the outer surface of the clamp module 12 is provided with a sliding groove 31, the side of the hose 35 near the sliding rod 34 is fixedly connected to the inside of the sliding groove 31, when the cutting unit 11 approaches a certain side nozzle 33, the side nozzle 33 switches to negative pressure suction mode, and the opposite side nozzle 33 switches to blowing mode.

[0048] Specifically, in one embodiment, the sliding plate 29 in the adaptive clamping assembly will be displaced as the pump body is lowered. Since the outer surface of the sliding plate 29 is rotatably connected to the rotating seat 32, the displacement of the sliding plate 29 will drive the rotating seat 32 to move. The rotating seat 32 is slidably connected to the sliding rod 34, and the sliding rod 34 is rotatably connected to the nozzle 33. In this way, the movement of the rotating seat 32 will change the angle of the nozzle 33 through the sliding rod 34, thereby realizing that the nozzle 33 responds to the position change of the pump body in real time.

[0049] As the cutting unit 11 performs cutting operations on the pump body, a large amount of debris is generated. When the cutting unit 11 approaches a certain side nozzle 33, the control box 13 receives a corresponding signal and controls the external negative pressure device to switch the side nozzle 33 to negative pressure suction mode. The powerful suction can quickly remove the debris generated by cutting, preventing the debris from flying around and falling onto the clamping module 12. At the same time, the opposite side nozzle 33 switches to blowing mode, and the airflow blows away the debris that may drift toward the clamping module 12, keeping the clamping module 12 clean to the greatest extent.

[0050] When the clamp module 12 rotates or moves, the hose 35 is wrapped around the outer surface of the lead screw 36, and its side near the sliding rod 34 is fixed in the slide groove 31. Therefore, the movement or rotation of the clamp module 12 will drive the lead screw 36 to rotate, thereby releasing or shortening the length of the hose 35 through the rotation of the lead screw 36. The torsion spring 37 ensures that the lead screw 36 maintains a certain initial state when it is not subjected to external force, so that the length adjustment of the hose 35 is stable and accurate, avoiding the problems of pulling and tangling, and ensuring the normal operation of the nozzle 33.

[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cutting device for producing metal pump bodies of twin-screw pumps, comprising a cutting unit (11) and a clamping module (12), characterized in that: An adaptive clamping assembly is provided above the clamping module (12). The adaptive clamping assembly includes several telescopic rods (21) fixedly connected to the top of the clamping module (12). An active block (22) is fixedly connected to the telescopic end of the telescopic rod (21). A mating block (23) is symmetrically slidably connected to the top of the clamping module (12). An active bar (221) is fixedly connected to the side wall of the active block (22). A driven groove (231) is opened on the side of the mating block (23) near the active block (22). When the active block (22) is pushed down by the pump body, the active block (22) can drive the mating block (23) to move towards its center through the inclined surface cooperation of the active bar (221) and the driven groove (231), thereby clamping the pump body; Each of the mating blocks (23) is fixedly connected to a magnetic block (25), and the top of the clamp module (12) is symmetrically fixedly connected to a protective shell (26). Each of the protective shells (26) is fixedly connected to a block-shaped electromagnet (27), and the block-shaped electromagnet (27) is connected to the power supply of the device. When the block electromagnet (27) is energized, it generates a magnetic field opposite to that of the magnetic block (25). When the block electromagnet (27) is de-energized, it does not have magnetism. The active block (22) is symmetrically fixedly connected to a spring (28), the outer surface of the spring (28) is fixedly connected to a sliding plate (29), and the top of the sliding plate (29) is fixedly connected to an abutment block (210). The side of the contact block (210) near the center of the active block (22) is arc-shaped; the sliding plate (29) is slidably connected inside the active block (22), and an external displacement sensing module is installed on the side of the sliding plate (29) away from the center of the active block (22).

2. The cutting device for producing metal pump bodies of a twin-screw pump according to claim 1, characterized in that: Several telescopic rods (24) are fixedly connected to the top of each mating block (23).

3. A cutting device for producing metal pump bodies of a twin-screw pump according to any one of claims 1-2, characterized in that: The cutting unit (11) is equipped with a protective shell (14) on its exterior. The bottom of the clamping module (12) is mounted on the inner surface of the protective shell (14). The control box (13) is mounted on the inner surface of the protective shell (14).

4. The cutting device for producing metal pump bodies of a twin-screw pump according to claim 3, characterized in that: An adaptive cleaning component is provided on the outside of the clamp module (12). The adaptive cleaning component includes nozzles (33) symmetrically installed on the top of the clamp module (12). The bottom of each nozzle (33) is fixedly connected to a hose (35). The side of the hose (35) away from the nozzle (33) is connected to an external negative pressure device.

5. A cutting device for producing metal pump bodies of a twin-screw pump according to claim 4, characterized in that: The outer surface of the sliding plate (29) is rotatably connected to a rotating seat (32), the nozzles (33) are rotatably connected to the outer surface of the clamp module (12), the outer surface of the nozzles (33) is rotatably connected to a sliding rod (34), the sliding rod (34) is slidably connected inside the rotating seat (32), the side wall of the control box (13) is symmetrically rotatably connected to a lead screw (36), the lead screw (36) and the control box (13) are fixedly connected to a torsion spring (37), and the hose (35) is wound around the outer surface of the lead screw (36).

6. A cutting device for producing metal pump bodies of a twin-screw pump according to claim 5, characterized in that: The outer surface of the clamp module (12) is provided with a groove (31), and the side of the hose (35) near the sliding rod (34) is fixedly connected to the inside of the groove (31).

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