Core rod mounting structure and machining clamp

Abstract

The utility model discloses a core rod installation structure and a machining clamp, and relates to the technical field of hose manufacturing, the core rod installation structure comprises a core rod base, a rotating shaft, a clamping piece and a core rod; one end of the rotating shaft is in transmission connection with the core rod base; a mounting position is arranged at the other end of the rotating shaft; the clamping piece is mounted at the mounting position; the clamping piece is connected with one end of the core rod in a clamping mode. According to the technical scheme provided by the utility model, the replacement efficiency of the core rod is improved by improving the mounting and fixing modes of the core rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hose manufacturing, particularly to a mandrel mounting structure and processing fixture. BACKGROUND

[0002] In the hose production process, the installation and replacement of the mandrel is a key step, which directly affects the production efficiency and product quality. Due to the soft and deformable characteristics of the hose body, the mandrel needs to be inserted into the hose in multiple production processes to maintain the shape. The mandrel base is fixed on the turntable, and the mandrel is installed on the mandrel base. The turntable realizes continuous production through accurate indexing and intermittent motion. In order to ensure the quality of the produced hose, the installation of the mandrel on the turntable must have high position accuracy and low runout, and considering the variety of hose diameter specifications and small batch production scale, the rapid replacement of the mandrel is also necessary.

[0003] However, the mandrel and the shaft of the prior art are usually connected by threads, and the entire nut or screw needs to be disassembled when replacing the mandrel, which is time-consuming and inefficient, resulting in low efficiency of mandrel replacement. SUMMARY

[0004] The main purpose of the utility model is to provide a mandrel mounting structure and processing fixture, which aims to improve the efficiency of mandrel replacement by improving the installation and fixing method of the mandrel.

[0005] To achieve the above purpose, the utility model provides a mandrel mounting structure, which comprises:

[0006] a mandrel base;

[0007] a shaft, one end of the shaft being in transmission connection with the mandrel base; the other end of the shaft being provided with a mounting position; and

[0008] a clamping piece, the clamping piece being installed on the mounting position, and the clamping piece being used for clamping the mandrel.

[0009] In an embodiment, the clamping piece comprises:

[0010] a resilient chuck, the resilient chuck being installed on the mounting position, the resilient chuck having a plurality of clamping claws, the plurality of clamping claws being enclosed to form a clamping hole, the clamping hole being used for inserting the mandrel to clamp the mandrel; and

[0011] a chuck adjusting part, the chuck adjusting part being movably connected to the outer wall of the shaft and the outer wall of the resilient chuck, the chuck adjusting part being used for controlling the clamping force of the resilient chuck on the mandrel.

[0012] In an embodiment, the outer wall of the rotating shaft is provided with an external thread, and the chuck adjusting part is a nut and is threadedly connected to the external thread.

[0013] In an embodiment, the elastic chuck is a conical body, and the elastic chuck has a first conical wall and a second conical wall, and the first conical wall and the second conical wall are arranged at an angle; the first conical wall abuts against the inner wall of the mounting site, and the second conical wall abuts against the inner wall of the chuck adjusting part.

[0014] In an embodiment, the mandrel mounting structure further comprises a driving member, which is mounted at an end of the mandrel base away from the chucking member and is in transmission connection with the rotating shaft.

[0015] In an embodiment, the mandrel base is provided with a mounting groove, and an end of the rotating shaft away from the chucking member is in transmission connection with the mounting groove.

[0016] The driving member comprises:

[0017] a speed reducer, which is connected to an end of the mandrel base away from the chucking member, and an output shaft of the speed reducer extends into the mounting groove and is connected with the rotating shaft; and

[0018] a first motor, an output shaft of which is connected with an input shaft of the speed reducer.

[0019] In an embodiment, the driving member comprises:

[0020] a locking part, one end of which is connected to an end of the mandrel base away from the chucking member; and

[0021] a second motor, an output shaft of which is connected with one end of the locking part; the locking part is used for connecting the rotating shaft and the second motor.

[0022] In an embodiment, the locking part is an electromagnetic clutch, which comprises:

[0023] at least one brake pad, which is connected with the mandrel base and is sleeved on the rotating shaft;

[0024] a friction plate, which is connectable with the brake pad;

[0025] an elastic member, which is connected with an end of the friction plate away from the brake pad; and

[0026] An electromagnetic coil is connected with one end of the elastic member away from the friction plate, and the other end of the electromagnetic coil is connected with the output shaft of the second motor; the electromagnetic coil is used to adsorb the friction plate and the brake pad to separate in the energized state, so that the second motor is connected with the rotating shaft and drives the rotating shaft to rotate.

[0027] The utility model discloses still provide a processing clamp, the processing clamp includes:

[0028] A core rod and

[0029] The core rod mounting structure as described above, the clamping member of the core rod mounting structure clamps the core rod.

[0030] In an embodiment, the core rod base of the core rod mounting structure is provided with an air inlet, the core rod is provided with an inner cavity, an air inlet, an air outlet and an air outlet, and the air inlet is communicated with the inner cavity;

[0031] The air outlet and the air inlet are located at two ends of the core rod, and the air outlet and the air inlet are located at the same end of the core rod.

[0032] The core rod mounting structure of the technical scheme of the utility model includes a core rod base, a rotating shaft and a clamping member; one end of the rotating shaft is drivingly connected with the core rod base; the other end of the rotating shaft is provided with a mounting position; the clamping member is installed in the mounting position, and the clamping member is used for clamping the core rod. The core rod mounting structure is improved by introducing the clamping member, so that the installation and fixing mode of the core rod is improved, the installation and disassembly of the core rod become simple and fast, complex threaded connections are not needed, the replacement time is greatly shortened, and the efficiency of core rod replacement is improved. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings according to the structures shown in the drawings without creating creative labor.

[0034] Figure 1 The structure schematic view of the first embodiment of the core rod mounting structure provided by the utility model is shown in the figure.

[0035] Figure 2 The structure schematic view of the second embodiment of the core rod mounting structure provided by the utility model is shown in the figure.

[0036] Explanation of reference numerals:

[0037] 10, mandrel base; 10a, mounting groove; 10b, air inlet; 20, rotating shaft; 20a, mounting position; 30, clamping piece; 31, elastic chuck; 32, chuck adjusting part; 40, driving piece; 41, speed reducer; 42, first motor; 50, shaft coupling; 43, locking part; 431, brake pad; 432, friction plate; 1, mandrel; 1a, inner cavity; 1b, air inlet; 1c, exhaust inlet; 1d, exhaust outlet.

[0038] The realization, functional features and advantages of the utility model will be further described in combination with embodiments with reference to the drawings. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0040] It should be noted that if the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0041] In addition, if the embodiments of the utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously satisfy the scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skill in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0042] The utility model provides a kind of mandrel mounting structure.

[0043] Please refer to Figure 1 And Figure 2In an embodiment of the present application, the mandrel mounting structure includes a mandrel base 10, a rotating shaft 20, and a clamping piece 30. One end of the rotating shaft 20 is drivingly connected to the mandrel base 10. The other end of the rotating shaft 20 is provided with a mounting position 20a. The clamping piece 30 is installed on the mounting position 20a, and the clamping piece 30 is used to clamp the mandrel 1.

[0044] The mandrel base 10 is the supporting part of the entire mounting structure, which is fixed on the turntable to provide a stable mounting platform for the rotating shaft 20 and the clamping piece 30. The design of the mandrel base 10 takes into account the accurate indexing and intermittent motion of the turntable, ensuring stability and accuracy during continuous production. The base is usually made of high-strength material to withstand various stresses and loads during production. The rotating shaft 20 is a key component that connects the mandrel base 10 and the clamping piece 30. One end of the rotating shaft 20 is drivingly connected to the mandrel base 10, and the other end is provided with a mounting position 20a. The design of the rotating shaft 20 allows it to rotate freely within the mandrel base 10, while ensuring its rotation stability and accuracy through a precise bearing system. The material selection and heat treatment process of the rotating shaft 20 ensure its wear resistance and durability under high-speed rotation. The clamping piece 30 is one of the innovations of the present application, which is installed on the mounting position 20a at the other end of the rotating shaft 20. The design of the clamping piece 30 allows it to be clamped and connected to one end of the mandrel 1, and it can be quickly clamped and released through elastic or mechanical means. The mandrel 1 is a core component in hose production, and one end of the mandrel 1 is clamped and connected to the clamping piece 30.

[0045] During production, the mandrel base 10 is fixed on the turntable, one end of the rotating shaft 20 is drivingly connected to the mandrel base 10, and the clamping piece 30 is installed on the mounting position 20a at the other end. When it is necessary to replace the mandrel 1, the operator only needs to loosen the clamping piece 30, and then the old mandrel 1 can be quickly pulled out and the new mandrel 1 can be inserted. The clamping piece 30 can quickly and stably clamp the new mandrel 1 through its elastic or mechanical clamping mechanism, without the need for complicated threaded connection or locking operations, greatly shortening the replacement time.

[0046] During production, the rotating shaft 20 drives the mandrel 1 to rotate, and the clamping piece 30 ensures the stability of the mandrel 1 under high-speed rotation. Because the design of the clamping piece 30 allows for a certain size error, even if there is fluctuation in the inner diameter of the hose, the clamping piece 30 can be adjusted to adapt to it, ensuring that the quality of the produced hose is uniform and consistent.

[0047] The core rod mounting structure of the utility model introduces the clamping piece 30, improves the installation and fixing mode of the core rod 1, makes the installation and dismounting of the core rod 1 become simple and fast, does not need complex threaded connection, greatly shortens the replacement time, thereby improves the efficiency of the core rod 1 replacement. In addition, the precise cooperation of the rotating shaft 20 and the clamping piece 30 ensures the stability of the core rod 1 under high-speed rotation, effectively reduces the jumping of the head of the core rod 1, improves the machining precision of the hose and product quality. More importantly, the close cooperation of the clamping piece 30 and the core rod 1 and the stable support of the rotating shaft 20 effectively prevent the relative rotation and running of the hose and the core rod 1 in the production process, significantly reduce the waste rate.

[0048] In an embodiment, referring to Figure 1 And Figure 2 The clamping piece 30 includes the elastic chuck 31 and the chuck adjusting part 32, the elastic chuck 31 is installed in the installation position 20a, the elastic chuck 31 has a plurality of clamping claws, the plurality of clamping claws are surrounded to form a clamping hole, the clamping hole is used for inserting the core rod 1 to clamp the core rod 1, and the chuck adjusting part 32 is movably connected to the outer wall of the rotating shaft 20 and the outer wall of the elastic chuck 31, and the chuck adjusting part 32 is used for controlling the clamping force of the elastic chuck 31 on the core rod 1.

[0049] In the utility model, the clamping piece 30 is the key component of the core rod mounting structure, and is specially designed to improve the stability and replacement efficiency of the core rod 1 in the hose production process. The clamping piece 30 includes the elastic chuck 31 and the chuck adjusting part 32, and the two components work together to realize the rapid and accurate clamping of the core rod 1.

[0050] The elastic chuck 31 is the main executive component of the clamping piece 30, which directly contacts the core rod 1 and is responsible for clamping. The elastic chuck 31 is designed with a plurality of clamping claws, which are arranged around the central axis and surrounded to form a clamping hole. The size of the clamping hole is slightly larger than the diameter of the core rod 1, so that the core rod 1 can be smoothly inserted. When the core rod 1 is inserted into the clamping hole, the clamping claws of the elastic chuck 31 automatically contract due to their elastic properties, tightly clamping the core rod 1 to prevent it from rotating or moving axially during production. The material selection of the elastic chuck 31 is crucial, it needs to have enough elasticity to achieve reliable clamping, and also has enough strength and wear resistance to withstand the stress and friction in the production process. Usually, the elastic chuck 31 is made of high-strength alloy steel or engineering plastic to meet these requirements.

[0051] The chuck adjusting part 32 is a control component of the clamping part 30, which is movably connected to the outer wall of the rotating shaft 20 and the outer wall of the elastic chuck 31. The main function of the chuck adjusting part 32 is to control the clamping force of the elastic chuck 31 on the mandrel 1. By adjusting the position or state of the chuck adjusting part 32, the clamping force of the clamping jaw can be adjusted, so as to adapt to mandrels 1 of different diameters or materials. The chuck adjusting part 32 can include a threaded rod, an adjusting nut or other mechanical adjusting devices. The operator can increase or decrease the clamping force by rotating the adjusting nut or operating other adjusting mechanisms. This design allows quick adjustment of the clamping force to adapt to different production needs, while ensuring that the mandrel 1 can still maintain stability when rotating at high speed or bearing a larger axial force.

[0052] In actual production, the mandrel 1 is first inserted into the clamping hole of the elastic chuck 31. The clamping jaw of the elastic chuck 31 automatically shrinks due to the elastic effect, clamping the mandrel 1. At this time, the chuck adjusting part 32 can further adjust the clamping force to ensure the stability of the mandrel 1 during production. If it is necessary to replace the mandrel 1, the operator can release the clamping force of the elastic chuck 31 by loosening the chuck adjusting part 32, so as to quickly pull out the old mandrel 1 and insert a new mandrel 1.

[0053] The clamping part 30 of the utility model realizes the quick replacement and accurate clamping of the mandrel 1 through its unique design, which significantly improves the efficiency and product quality of hose production. The automatic clamping mechanism of the elastic chuck 31 and the accurate control of the chuck adjusting part 32 ensure the stable positioning of the mandrel 1 during production, reduce the jumping of the head of the mandrel 1, and improve the machining precision. The design of the clamping part 30 allows the clamping force to be adjusted, and the chuck adjusting part 32 is loosened by about 60 degrees, so that the mandrel can be pulled out, and after replacing the mandrel of a new specification, the chuck adjusting part 32 is tightened again; the mandrel 1 is clamped by the elastic chuck 31, the elastic chuck 31 has good centering, the clamping can eliminate the fitting gap, and high-precision assembly can be obtained.

[0054] In an embodiment, referring to Figure 1 and Figure 2 , the outer wall of the rotating shaft 20 is provided with external threads, and the chuck adjusting part 32 is a nut and is threadedly connected to the external threads.

[0055] In the utility model, the outer wall of the rotating shaft 20 is designed with external threads, which allows the chuck adjusting part 32 to be fixed on the outer wall of the rotating shaft 20 through threaded connection. The design of the external threads allows the nut to move axially along the rotating shaft 20, so as to adjust the clamping force of the elastic chuck 31 on the mandrel 1.

[0056] When increased clamping force is required, this can be achieved by rotating the nut so that it moves along the threads in the direction of the elastic chuck 31, thereby compressing the elastic chuck 31 and increasing its grip on the mandrel 1. Conversely, to reduce the clamping force, the nut can be rotated in the opposite direction, thereby relaxing the grip on the mandrel 1.

[0057] In one embodiment, referring to Figure 1 and Figure 2 the elastic chuck 31 is a conical body, and the elastic chuck 31 has a first conical wall 31a and a second conical wall 31b, and the first conical wall 31a and the second conical wall 31b are arranged at an angle; the first conical wall 31a abuts against the inner wall of the mounting position 20a, and the second conical wall 31b abuts against the inner wall of the chuck adjusting part 32.

[0058] The first conical wall 31a abuts against the inner wall of the mounting position 20a, which is designed to provide initial positioning and support when the mandrel is inserted. The conical design of the first conical wall 31a helps guide the mandrel smoothly into the clamping hole and provides a certain clamping force during clamping. The second conical wall 31b abuts against the inner wall of the chuck adjusting part 32, which is designed to provide additional support and clamping force during mandrel clamping. The conical design of the second conical wall 31b can limit the elastic chuck 31 from disengaging from the mounting position 20a, ensuring the tightness and stability of the clamping.

[0059] The elastic chuck 31 of the utility model realizes self-adaptive clamping of the mandrel through its conical body structure. The angle design of the first conical wall 31a and the second conical wall 31b enables the elastic chuck 31 to automatically adjust the clamping force when the mandrel is inserted, to adapt to the diameter change of the mandrel. This self-adaptive clamping mechanism not only improves the clamping stability of the mandrel, but also reduces the production waste caused by the diameter fluctuation of the mandrel.

[0060] In addition, the conical design of the elastic chuck 31 also helps to reduce the wear of the mandrel during clamping, because the conical structure can evenly distribute the clamping force, avoiding excessive local pressure on the mandrel. This design also simplifies the replacement process of the mandrel, because the operator can more easily insert or pull out the mandrel from the elastic chuck 31.

[0061] The clamping hole has a diameter smaller than the outer diameter of the mandrel 1, but before the chuck adjusting part 32 is tightened on the rotating shaft 20, the diameter of the clamping hole is larger than the diameter of the mounting position 20a. The clamping jaws of the elastic chuck 31 are arranged around the central axis to form a clamping hole with a diameter slightly smaller than the outer diameter of the mandrel 1. This design enables the mandrel 1 to form a tight contact with the inner wall of the elastic chuck 31 when inserted into the clamping hole, thereby achieving a firm clamping. After the mandrel 1 is inserted into the clamping hole, the clamping jaws of the elastic chuck 31 automatically contract due to their elastic properties, tightly clamping the mandrel 1 and preventing it from rotating or moving axially during production.

[0062] In an embodiment, referring to Figure 1 and Figure 2 , the mandrel mounting structure further comprises a driving member 40 mounted at an end of the mandrel base 10 away from the clamping member 30 and in transmission connection with the rotating shaft 20.

[0063] In the mandrel mounting structure of the present application, in addition to the elastic chuck 31 and the chuck adjusting part 32, there is a key component, the driving member 40. The driving member 40 is mounted at an end of the mandrel base 10 away from the clamping member 30 and in transmission connection with the rotating shaft 20. Its main function is to provide power to drive the rotating shaft 20 and the mandrel 1 to rotate, thereby realizing the processing of the hose.

[0064] The introduction of the driving member 40 makes the rotation of the mandrel 1 more stable and controllable, improving the precision and efficiency of hose processing. By precisely controlling the speed of the motor, different production speeds and process requirements can be adapted to ensure the quality of the hose. At the same time, the design of the driving member 40 also helps to reduce errors caused by manual operation, improving the automation level of production.

[0065] In the first embodiment, referring to Figure 1 , the mandrel base 10 is provided with a mounting slot 10a, and an end of the rotating shaft 20 away from the clamping member 30 is in transmission connection within the mounting slot 10a; the driving member 40 comprises a speed reducer 41 and a first motor 42, the speed reducer 41 is connected to an end of the mandrel base 10 away from the clamping member 30, and the output shaft of the speed reducer 41 extends into the mounting slot 10a and is connected with the rotating shaft 20; the output shaft of the first motor 42 is connected with the input shaft of the speed reducer 41.

[0066] The driving member 40 is the core power source in the mandrel mounting structure, which is composed of a speed reducer 41 and a first motor 42. The speed reducer 41 is connected to an end of the mandrel base 10 away from the clamping member 30, and its output shaft is designed to extend into the mounting slot 10a and be directly connected with the rotating shaft 20. This layout allows the speed reducer 41 to convert the high-speed low-torque rotary motion provided by the first motor 42 into low-speed high-torque rotary motion, thereby driving the rotating shaft 20 and the mandrel 1 to rotate at a speed suitable for hose processing. The selection and configuration of the first motor 42 should take into account the torque and speed required by the entire system. The output shaft of the motor is connected with the input shaft of the speed reducer 41 to ensure efficient power transmission. In addition, the design of the first motor 42 should also consider energy efficiency and noise control to achieve energy saving and reduce noise in the working environment.

[0067] The mandrel mounting structure realizes stable transmission and precise control of the rotating shaft 20 through the carefully designed mounting slot 10a and driving member 40. The use of the speed reducer 41 not only improves the torque, but also allows precise adjustment of the rotating speed to adapt to different production requirements and process parameters.

[0068] In the first embodiment, please refer to Figure 1 The mandrel mounting structure further comprises a coupling 50 mounted within the mounting slot 10a, with both ends of the coupling 50 connected to the end of the rotating shaft 20 away from the clamp 30 and the output shaft of the speed reducer 41, so that the rotating shaft 20 is drivingly connected to the mandrel base 10.

[0069] In the mandrel mounting structure of the present application, the coupling 50, as a mechanical transmission element, mainly functions to connect the rotating shaft 20 and the output shaft of the speed reducer 41 and transmit torque, ensuring that the rotational movement of the rotating shaft 20 can be transmitted without loss. The design of the coupling 50 takes into account various factors, including but not limited to transmission efficiency, the ability to compensate for axial, radial, and angular deviations, and the ability to absorb vibrations and cushion impacts. These characteristics are crucial to ensuring the stable rotation of the mandrel 1 during the production process of the hose.

[0070] One end of the coupling 50 is connected to the rotating shaft 20 through precise fitting, and the other end is connected to the output shaft of the speed reducer 41. The speed reducer 41 converts the high-speed low-torque rotational movement provided by the first motor 42 into low-speed high-torque rotational movement to meet the needs of hose processing. The design of the coupling 50 allows for a certain degree of axial, radial, and angular deviation, which means that even if there is a slight centering error during installation, the coupling 50 can ensure the smoothness and reliability of the transmission.

[0071] The use of the coupling 50 not only simplifies the transmission structure and reduces maintenance costs, but also improves transmission efficiency and reduces energy consumption. In addition, the flexible connection characteristics of the coupling 50 help to absorb and isolate vibrations from the motor and the speed reducer 41, thereby reducing the impact on the mandrel 1 and the entire transmission system, prolonging the service life of the equipment.

[0072] In the second embodiment, please refer to Figure 2 The driving member 40 comprises a locking portion 43 and a second motor, one end of the locking portion 43 is connected to the end of the mandrel base 10 away from the clamp 30, and the output shaft of the second motor is connected to one end of the locking portion 43; the locking portion 43 is used to connect the rotating shaft 20 and the second motor.

[0073] The locking portion 43 is a key component of the driving member 40, and one end of the locking portion 43 is connected to the end of the mandrel base 10 away from the clamp 30. The locking portion 43 can drive the rotating shaft 20 to rotate, ensuring the stability of the mandrel 1 during processing. The design of the locking portion 43 takes into account various factors, including the selection of materials, the strength and durability of the structure, and the connection method with the mandrel base 10. Generally, the locking portion 43 will be made of high-strength alloy materials to withstand high loads and impacts during production. At the same time, the locking portion 43 can control the rotating shaft 20 to stop moving when the rotating shaft 20 needs to be braked.

[0074] The second motor is another important component of the driving member 40, and its output shaft is connected to one end of the locking part 43. The selection of the second motor should be based on the load requirements and working conditions of the locking part 43, including parameters such as power, speed and torque of the motor. The design of the second motor should ensure that it can provide sufficient power to drive the locking part 43 and the rotating shaft 20 to rotate. The control mode of the second motor is also an important consideration in the design.

[0075] During the production of the hose, the stability of the mandrel 1 is crucial to ensure product quality. The locking part 43 ensures the stability of the mandrel 1 under high-speed rotation or under the action of a large axial force, thereby preventing the hose and the mandrel 1 from rotating and running out of position. This stable positioning is crucial to improve the processing accuracy and consistency of the hose.

[0076] In addition, the design of the locking part 43 also takes into account the need for easy maintenance and replacement, which helps to reduce production downtime and improve production efficiency. By regularly maintaining and replacing worn parts, the locking part 43 can always maintain good working condition, further reducing the risk of hose and mandrel 1 running out of position.

[0077] In the second embodiment, please refer to Figure 2 , the locking part 43 is an electromagnetic clutch, which includes at least one brake pad 431, a friction plate 432, a spring and an electromagnetic coil. The brake pad 431 is connected to the mandrel base 10 and is sleeved on the rotating shaft 20. The friction plate 432 is connected to the brake pad 431. The spring is connected to the end of the friction plate 432 away from the brake pad 431. The electromagnetic coil is connected to the end of the spring away from the friction plate 432. The end of the electromagnetic coil away from the spring is connected to the output shaft of the second motor. The electromagnetic coil is used to attract the friction plate 432 away from the brake pad 431 in the energized state, so that the second motor is connected to the rotating shaft 20 and drives the rotating shaft 20 to rotate.

[0078] The electromagnetic clutch includes at least one brake pad 431, a friction plate 432, a spring, and an electromagnetic coil. These components work together to achieve effective locking and release of the rotating shaft 20. The brake pad 431 is connected to the core rod base 10 and is sleeved on the rotating shaft 20. The function of the brake pad 431 is to prevent the rotation of the rotating shaft 20 by contacting the friction plate 432 when the electromagnetic coil is not powered, ensuring that the core rod 1 remains stationary when needed. The friction plate 432 is connected to the brake pad 431, and its surface is designed with special friction material to provide sufficient friction. When the electromagnetic coil is powered, the friction plate 432 separates from the brake pad 431, allowing the rotating shaft 20 to rotate. The spring is connected to the end of the friction plate 432 away from the brake pad 431. The function of the spring is to provide the necessary restoring force to make the friction plate 432 quickly press against the brake pad 431 when the electromagnetic coil is powered off, thereby achieving rapid locking of the rotating shaft 20. The electromagnetic coil is connected to the end of the spring away from the friction plate 432, and the end away from the spring is connected to the output shaft of the second motor.

[0079] The core rod mounting structure achieves precise control of the rotation of the rotating shaft 20 by using an electromagnetic clutch as the locking part 43. The design of the electromagnetic clutch allows the rotation of the rotating shaft 20 to be quickly started or stopped when needed, and the electromagnetic clutch can accurately control the rotational position of the core rod 1, eliminating the deviation caused by rotational inertia. By precisely controlling the rotation of the rotating shaft 20, it can ensure that the hose is uniformly formed on the core rod 1, improving product quality. In addition, the use of the electromagnetic clutch also improves the automation level of the production process. Since the electromagnetic clutch can be remotely controlled, the operator can control the start and stop of the rotating shaft 20 through programming or manual operation, thereby improving production efficiency and flexibility. The fast response characteristics of the electromagnetic clutch also help to reduce energy consumption and wear during the production process, prolonging the service life of the equipment.

[0080] In the second embodiment, please refer to Figure 2 , the core rod base 10 is provided with an assembly slot, and the end of the rotating shaft 20 away from the clamping piece 30 extends into the assembly slot; the driving part 40 further includes a bearing, which is arranged between the rotating shaft 20 and the slot wall of the assembly slot, so that the rotating shaft 20 is rotationally connected in the assembly slot.

[0081] The design of the core rod base 10 includes an assembly slot, which is a key structure for supporting and guiding the rotating shaft 20. The end of the rotating shaft 20, away from the clamping piece 30, is stably installed by extending into the assembly slot. In order to ensure that the rotating shaft 20 can rotate smoothly in the assembly slot, the driving part 40 further includes a bearing, which is arranged between the rotating shaft 20 and the slot wall of the assembly slot, thereby allowing the rotating shaft 20 to be rotationally connected in the assembly slot.

[0082] The introduction of bearings is to reduce the friction and wear of the rotating shaft 20 during rotation, improve the transmission efficiency and accuracy. Bearings usually adopt high-precision ball bearings or sliding bearings, which can effectively support the rotating shaft 20 while allowing it to rotate freely with low friction. The design and selection of bearings need to consider the load, rotating speed and working environment of the rotating shaft 20, to ensure its stable performance in long-time operation.

[0083] The use of bearings not only reduces the vibration and noise of the rotating shaft 20 during high-speed rotation, but also improves the efficiency of the entire transmission system. In addition, the precise positioning and support capacity of the bearing ensure the correct alignment between the rotating shaft 20 and the mandrel base 10, which is crucial for maintaining the accuracy and quality of the hose production.

[0084] The utility model discloses still propose a kind of machining fixture, please refer to Figure 1 And Figure 2 , machining fixture includes mandrel 1 and mandrel mounting structure, and the clamping piece 30 of mandrel mounting structure clamps mandrel 1. The mandrel mounting structure described here is as described above.

[0085] Mandrel 1 as the core component of hose forming, its role is to provide internal support during hose material extrusion or forming, to ensure that the hose reaches predetermined size and shape. Mandrel mounting structure includes clamping piece 30, which is designed with elastic chuck 31, has multiple clamping claws, forms clamping hole by enclosing, for mandrel 1 insertion and realizes firm clamping. The clamping force of elastic chuck 31 can be accurately controlled by chuck adjusting part 32 to adapt to mandrel 1 of different diameters, to ensure the stability of mandrel 1 in production process and the convenience of replacement. In addition, mandrel mounting structure also includes driving part 40, such as speed reducer 41 and motor, and electromagnetic clutch, for driving mandrel 1 to rotate, to further ensure the quality and efficiency of hose production. The design of this machining fixture not only improves the automation level of hose production, but also significantly improves production efficiency and product quality, has significant practical value and market application prospect.

[0086] In an embodiment, the mandrel base 10 of the mandrel mounting structure is provided with an air inlet 10b, the mandrel 1 is provided with an inner cavity 1a, an air outlet 1b communicating with the inner cavity 1a, an air inlet 1c and an air outlet 1d, and the air inlet 10b communicates with the inner cavity 1a; the air outlet 1d and the air inlet 1c are located at both ends of the mandrel 1, and the air outlet 1b and the air inlet 1c are located at the same end of the mandrel 1.

[0087] When the hose is sleeved on the mandrel 1, compressed air enters from the air inlet 10b and then exits from the air outlet 1b, uniformly blowing the hose, and the gas in the hose enters from the gas inlet and then exits from the gas outlet. When blowing, the hose freely enters and exits the mandrel 1 without any sense of obstruction, and after the air is turned off, the inner wall of the hose closely adheres to the mandrel 1, so that the hose and the mandrel 1 are tightly assembled and cannot relatively deviate. The structure can allow larger diameter fluctuations of the hose and will not cause the hose to be damaged and the deviation between the mandrel 1 and the hose.

[0088] The above merely describes exemplary embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A mandrel mounting structure characterized by comprising: The mandrel mounting structure comprises: a mandrel base; a rotating shaft, one end of which is in driving connection with the mandrel base, and the other end of which is provided with a mounting position; and a clamping member, which is mounted on the mounting position and is used for clamping a mandrel.

2. The mandrel mounting structure of claim 1 wherein, The clamping member comprises: an elastic chuck, which is mounted on the mounting position, has a plurality of clamping claws, and has a clamping hole formed by the plurality of clamping claws, the clamping hole being used for inserting the mandrel to clamp the mandrel; and a chuck adjusting part, which is movably connected to the outer wall of the rotating shaft and the outer wall of the elastic chuck, and is used for controlling the clamping force of the elastic chuck on the mandrel.

3. The mandrel mounting structure of claim 2 wherein, The outer wall of the rotating shaft is provided with external threads, and the chuck adjusting part is a nut and is threadedly connected to the external threads.

4. The mandrel mounting structure of claim 2 wherein, The elastic chuck is a conical body, has a first conical wall and a second conical wall, and the first conical wall and the second conical wall are arranged at an angle; the first conical wall abuts against the inner wall of the mounting position, and the second conical wall abuts against the inner wall of the chuck adjusting part.

5. The mandrel mounting structure of claim 1 wherein, The mandrel mounting structure further comprises a driving member, which is mounted on the end of the mandrel base away from the clamping member and is in driving connection with the rotating shaft.

6. The mandrel mounting structure of claim 5 wherein, The mandrel base is provided with a mounting groove, and the end of the rotating shaft away from the clamping member is drivingly connected in the mounting groove. The driving member comprises: a speed reducer, which is connected to the end of the mandrel base away from the clamping member, and has an output shaft extending into the mounting groove and connected to the rotating shaft; and a first motor, an output shaft of which is connected to an input shaft of the speed reducer.

7. The mandrel mounting structure of claim 5 wherein, The driving member comprises: a locking part, one end of which is connected to the end of the mandrel base away from the clamping member; and a second motor, an output shaft of which is connected to one end of the locking part; The locking part is used for connecting the rotating shaft and the second motor.

8. The mandrel mounting structure of claim 7 wherein, The locking part is an electromagnetic clutch, which comprises: at least one brake pad, which is connected to the mandrel base and is sleeved on the rotating shaft; a friction plate, which is connectable to the brake pad; an elastic member, which is connected to the end of the friction plate away from the brake pad; and an electromagnetic coil, which is connected to the end of the elastic member away from the friction plate, and an end of the electromagnetic coil away from the elastic member is connected to an output shaft of the second motor; the electromagnetic coil is used for separating the friction plate and the brake pad in an energized state, so that the second motor is connected to the rotating shaft and drives the rotating shaft to rotate.

9. A machining jig characterized by comprising: The processing fixture comprises: a mandrel; and the mandrel mounting structure according to any one of claims 1 to 8, the clamping member of the mandrel mounting structure clamping the mandrel.

10. The machining fixture of claim 9, wherein The mandrel base of the mandrel mounting structure is provided with an air inlet, the mandrel is provided with an inner cavity, an air inlet, an air outlet, and the air inlet is in communication with the inner cavity; The exhaust outlet and the intake outlet are located at opposite ends of the mandrel. The exhaust outlet and the intake outlet are located at the same end of the mandrel.

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