Mosquito-repellent incense coil pipe forming mechanism

Abstract

The utility model provides a mosquito-repellent incense coil pipe forming mechanism, and relates to the field of pipe processing, a pinch channel is formed between a first fixed roller and a first radial adjusting roller, and a bent channel communicated with the pinch channel is formed between a second fixed roller and a second radial adjusting roller and between the second fixed roller and an axial adjusting roller respectively; the first radial adjusting roller, the second radial adjusting roller and the axial adjusting roller are rotatably arranged on the first swing arm, the second swing arm and the sliding roller seat respectively, a first ejector head is connected to the first swing arm in an abutting mode and connected with the motor through a lead screw nut transmission assembly, and a second ejector head is connected to the second swing arm in an abutting mode and connected with the motor through a lead screw nut transmission assembly. The second ejector head is arranged at the movable end of the servo electric cylinder; the sliding roller seat is in transmission connection with a motor through a first transmission assembly; the first swing arm and the second swing arm are hinged to each other and elastically connected with the rack. And local sinking of the pipe head and the pipe orifice and inner side wrinkling of the copper pipe head during bending are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe processing, in particular to a mosquito coil pipe forming mechanism. Background Art

[0002] The function of the mosquito coil tube forming mechanism is to bend the metal tube into a mosquito coil shape so as to be used for heat treatment, transportation and on-site installation of piping for the metal tube. The working principle of the mosquito coil tube forming mechanism is: a plurality of rollers are used to clamp and bend the metal tube, and a roller for changing the bending radius is arranged at the output end of the clamping bending channel. The roller forms different bending radii by axial movement during the production process of the mosquito coil, thereby realizing the production of the mosquito coil; however, when producing large-diameter copper tubes, the bending force required for the copper tube is relatively large, especially the head section of the mosquito coil is very easy to form defects such as local depression of the tube mouth and wrinkles on the surface of the copper tube inside the head bend during the molding.

[0003] Therefore, the utility model proposes a mosquito coil tube material forming mechanism. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model proposes a mosquito coil tube forming mechanism, which can avoid the problem that the head of the mosquito coil tube is easily concave at the tube mouth during forming and wrinkles appear on the surface of the copper tube inside the bent head.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A mosquito coil material forming mechanism comprises a frame, a first fixed roller, a second fixed roller, a first radial adjustment roller, a second radial adjustment roller, an axial adjustment roller and a driving assembly for driving the first fixed roller, the second fixed roller, the first radial adjustment roller, the second radial adjustment roller and the axial adjustment roller to rotate respectively, a pinching channel is formed between the first fixed roller and the first radial adjustment roller, a curved channel connected with the pinching channel is formed between the second fixed roller and the second radial adjustment roller and the axial adjustment roller respectively; the first radial adjustment roller, the second radial adjustment roller and the axial adjustment roller are rotatably arranged on a first swing arm, a second swing arm and a sliding roller seat respectively, a first jack is abutted on the first swing arm, the first jack is connected to a motor through a screw nut transmission assembly, a second jack is abutted on the second swing arm, and the second jack is arranged on the movable end of a servo electric cylinder; the sliding roller seat is connected to the motor through a first transmission assembly; the first swing arm and the second swing arm are hinged to each other and the first swing arm and the second swing arm are elastically connected to the frame respectively.

[0007] Preferably, the lower parts of the first swing arm, the second swing arm and the sliding roller seat are all provided with a driving assembly; the upper parts of the first swing arm and the second swing arm are connected to the frame through elastic elements, and the upper parts of the first swing arm and the second swing arm are respectively abutted against the first head and the second head.

[0008] Preferably, the first radial adjustment roller, the second radial adjustment roller and the axial adjustment roller are rotatably arranged on the upper parts of the first swing arm, the second swing arm and the sliding roller seat respectively, and are connected to the driving assembly through a connecting shaft running through the first swing arm, the second swing arm and the sliding roller seat.

[0009] Preferably, it also includes a displacement detection module for detecting the displacement distance of the first plug.

[0010] Preferably, the first transmission assembly includes a guide rod and a ball screw pair, the sliding roller seat is slidably connected to the guide rod and the sliding roller seat is nested on the nut seat of the ball screw pair; the ball screw pair is transmission-connected to the servo motor.

[0011] Preferably, the guide rod and the ball screw pair are fixedly connected to the frame.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] With the above scheme, the first fixed roller and the first radial adjustment roller form a pinching channel, and the second fixed roller, the second radial adjustment roller and the axial adjustment roller form a curved channel connected to the pinching channel. During actual operation, the motor controls the position of the first swing arm through the screw nut transmission group and the first head, so that the pinching channel can adapt to different large pipe diameters. Secondly, at the end of the pinching channel, the second fixed roller cooperates with the second radial adjustment roller and the axial adjustment roller to form a curved channel for the copper tube. The second swing arm drives the second radial adjustment roller to offset the copper tube radius forming position in the Y direction by a certain distance through a high-precision servo electric cylinder in advance. After the tube head passes through the pinching channel and exceeds the contact bending point of the axial adjustment roller, the second radial adjustment roller is driven by the servo electric cylinder to quickly return to the radius forming position required for bending, thereby eliminating the tube mouth depression or tube mouth shrinkage caused by stress during the copper tube bending process and the wrinkle defects on the inner side of the head when the copper tube is bent. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a schematic diagram of the planar structure of a mosquito coil tube forming mechanism of the utility model;

[0016] Figure identification: 1-frame; 2-first fixed roller; 3-second fixed roller; 4-first radial adjustment roller; 5-second radial adjustment roller; 6-axial adjustment roller; 7-first jack; 8-second jack; 9-sliding roller seat; 10-first swing arm; 11-second swing arm; 12-guide rod; 13-motor; 14-screw nut transmission assembly; 15-servo electric cylinder; 16-elastic element; 17-displacement detection module; 18-ball screw pair. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", "fourth", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0020] This embodiment provides a mosquito coil tube forming mechanism, such as Figure 1As shown, it includes a frame 1, a first fixed roller 2, a second fixed roller 3, a first radial adjustment roller 4, a second radial adjustment roller 5, an axial adjustment roller 6 and a driving assembly for driving the first fixed roller 2, the second fixed roller 3, the first radial adjustment roller 4, the second radial adjustment roller 5, and the axial adjustment roller 6 to rotate respectively, a pinching channel is formed between the first fixed roller 2 and the first radial adjustment roller 4, and a curved channel connected to the pinching channel is formed between the second fixed roller 3 and the second radial adjustment roller 5 and the axial adjustment roller 6 respectively; the first radial adjustment roller 4, The second radial adjustment roller 5 and the axial adjustment roller 6 are rotatably arranged on the first swing arm 10, the second swing arm 11 and the sliding roller seat 9 respectively; the first swing arm 10 is abutted with the first jack 7, and the first jack 7 is connected to the motor 13 through the screw nut transmission assembly 14; the second swing arm 11 is abutted with the second jack 8, and the second jack 8 is arranged on the movable end of the servo electric cylinder 15; the sliding roller seat 9 is connected to the motor 13 through the first transmission assembly; the first swing arm 10 and the second swing arm 11 are hinged to each other, and the first swing arm 10 and the second swing arm 11 are elastically connected to the frame 1 respectively.

[0021] In this embodiment, the driving components for respectively driving the first fixed roller 2, the second fixed roller 3, the first radial adjustment roller 4, the second radial adjustment roller 5, and the axial adjustment roller 6 to rotate can be controlled in a linkage manner, or can be controlled individually, that is, the first fixed roller 2, the second fixed roller 3, the first radial adjustment roller 4, the second radial adjustment roller 5, and the axial adjustment roller 6 are rotated by different driving components, or there can be a set of driving components, such as a driving gear, a driven gear, etc., which are engaged with each other for power transmission. The specific rotation drive scheme and position adjustment scheme can adopt the existing technology.

[0022] In this embodiment, the lower parts of the first swing arm 10, the second swing arm 11 and the sliding roller seat 9 are all provided with a driving assembly; the upper parts of the first swing arm 10 and the second swing arm 11 are connected to the frame 1 through an elastic element 16, and the upper parts of the first swing arm 10 and the second swing arm 11 are respectively abutted against the first head 7 and the second head 8.

[0023] In this embodiment, the first radial adjustment roller 4, the second radial adjustment roller 5, and the axial adjustment roller 6 are rotatably arranged on the upper parts of the first swing arm 10, the second swing arm 11 and the sliding roller seat 9, and are connected to the driving component through a connecting shaft running through the first swing arm 10, the second swing arm 11 and the sliding roller seat 9. In practice, the connection method of the first radial adjustment roller 4, the second radial adjustment roller 5, the axial adjustment roller 6 and the driving component is set according to the situation.

[0024] In this embodiment, the first fixed roller 2 and the first radial adjustment roller 4 form a pinching channel, and a curved channel connected to the pinching channel is formed between the second fixed roller 3, the second radial adjustment roller 5, and the axial adjustment roller 6. During actual operation, the motor 13 controls the position of the first swing arm 10 through the screw nut transmission group 14 and the first head 7 to make the pinching channel adapt to different large pipe diameters. Secondly, at the end of the pinching channel, the second fixed roller 3 cooperates with the second radial adjustment roller 5 and the axial adjustment roller 6 to form a curved channel for the copper tube. The second swing arm 11 is preliminarily driven by the high-precision servo electric cylinder 15 to drive the second radial adjustment roller 5 to offset the copper tube radius forming position in the Y direction by a certain distance. After the tube head passes through the clamping channel and exceeds the contact bending point of the axial adjustment roller 6 (that is, when the tube head reaches the circumferential high point of the axial adjustment roller 6), the second radial adjustment roller 5 is driven by the servo electric cylinder 15 to quickly return to the radius forming position required for bending. The second radial adjustment roller 5 is driven by the servo electric cylinder 15 to quickly return to the radius forming position required for bending, that is, under the action of the servo electric cylinder 15, the second swing arm 10 drives the second radial adjustment roller 5 to adjust the roller and press the tube to a fixed position, which is equivalent to providing a certain activity space for the tube head after the second radial adjustment roller 5 is preliminarily offset by a certain position. Compared with the original implementation in which the second radial roller 5 is initially in a preset radius forming position, the stress concentration point of the tube head end in the present application is increased due to the activity space, thereby eliminating the tube mouth depression or tube mouth shrinkage caused by stress during the copper tube bending process and the wrinkle defects on the inner side of the head when the copper tube is bent.

[0025] In this embodiment, if Figure 1 As shown, the apparatus further includes a displacement detection module 17 for detecting the displacement distance of the first plug 7 , which can be used to further improve the adjustment accuracy by detecting the displacement distance of the first plug 6 .

[0026] In this embodiment, the displacement detection module 17 includes a detection head and a detection receiver. The detection head is arranged on the first head 7, and the detection receiver is connected to the frame 1 and matches the position of the detection head.

[0027] In this embodiment, the first transmission assembly includes a guide rod 12 and a ball screw pair 18. The sliding roller seat 9 is slidably connected to the guide rod 12 and the sliding roller seat 9 is nested on the nut seat of the ball screw pair 18. The ball screw pair 18 is transmission-connected to the servo motor 13.

[0028] In this embodiment, the guide rod 12 and the ball screw pair 18 are fixedly connected to the frame 1 .

[0029] In this embodiment, the motor drive used may be a servo motor or a starting type motor.

[0030] In this embodiment, in a conventional application, such as CN214683940U, the second radial adjustment roller (is driven by a screw nut transmission assembly, the first radial adjustment roller, the second radial adjustment roller and the two fixed rollers form a pinching channel, that is, the positions of the first radial adjustment roller, the second radial adjustment roller and the two fixed rollers are pre-set to adapt to the radius required by the copper tube, the first radial adjustment roller and the second radial adjustment roller are statically changed when working, and after the copper tube comes out of the end of the pinching channel, there is no active space between the copper tube and the second radial roller, and then the copper tube head and the bending forming roller (the axial adjustment roller in this embodiment) are in the semi-circular position of the copper tube. The position of the radial forming is offset against the copper tube to complete the bending change, but this situation has the problem of high stress, that is, when the tube head is fixed at the first bending, since the first radial adjustment roller and the second radial adjustment roller as well as the fixed roller and the bending forming roller are all in a static position, when the tube head contacts, the stress is too large due to static reasons, resulting in a plastic deformation flat head (higher stress concentration point). At the same time, there is also a traditional improvement method of pre-setting the positions of the first radial adjustment roller and the second radial adjustment roller and the two fixed rollers to adapt to the required radius of the copper tube, and then pre-moving the bending forming roller away from the preset radius forming position in the traditional solution along the X-axis direction to move away from a certain distance, that is, at the tube head After coming out of the end of the clamping channel, a longer straight line segment will be formed at one end (exceeding the second radial adjustment roller by a certain distance). After the straight line segment is formed, the bending forming roller quickly reaches the radius forming position, which significantly reduces the original problem of excessive stress, but it causes a new problem. Since the straight line segment is too long, it will cause the pipe to wrinkle, and the effect is not ideal. The method proposed in this embodiment is to form a dynamically changing bending channel through the second fixed roller 3, the second radial adjustment roller 5 and the axial adjustment roller 6, that is, to achieve dynamic changes through the position change of the second radial adjustment roller 5. When the copper tube is bent for the first time, the copper tube bites into the high point of the axial adjustment roller 6 due to the clamping force, and at this time the second The radial adjustment roller 5 provides a certain active area for the copper tube to bite into the process. When the copper tube bites into the high point of the axial adjustment roller 6 and its upper side is against the second radial adjustment roller 5 (at this moment, the stress concentration point is lower than the original traditional one), the second radial adjustment roller 5 is quickly displaced downward to the original fixed radius forming position under the precise drive of the servo electric cylinder 15, and the copper tube is bent into a radius from large to small and then from small to large along the clamping and conveying under the left and right lateral movement of the axial adjustment roller 6. Compared with the above two traditional directions, this embodiment does not need to increase the length of the straight section of the copper tube, while reducing the bending stress, avoiding the flat tube of the tube head and the wrinkle problem on the inner side of the head, and the effect is remarkable.

[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mosquito coil tube forming mechanism, characterized in that: The invention comprises a frame (1), a first fixed roller (2), a second fixed roller (3), a first radial adjustment roller (4), a second radial adjustment roller (5), an axial adjustment roller (6), and a driving assembly for driving the first fixed roller (2), the second fixed roller (3), the first radial adjustment roller (4), the second radial adjustment roller (5), and the axial adjustment roller (6) to rotate respectively; a pinching channel is formed between the first fixed roller (2) and the first radial adjustment roller (4); a curved channel connected to the pinching channel is formed between the second fixed roller (3) and the second radial adjustment roller (5) and the axial adjustment roller (6); the first radial adjustment roller (4) and the second radial adjustment roller (5) are connected to the first radial adjustment roller (4) and the second radial adjustment roller (5). (5), the axial adjustment roller (6) is rotatably arranged on the first swing arm (10), the second swing arm (11) and the sliding roller seat (9), respectively; the first swing arm (10) is abutted with a first head (7), the first head (7) is connected to the motor (13) through a screw nut transmission assembly (14), the second swing arm (11) is abutted with a second head (8), the second head (8) is arranged on the movable end of the servo electric cylinder (15); the sliding roller seat (9) is transmission-connected to the motor (13) through a first transmission assembly; the first swing arm (10) and the second swing arm (11) are hinged to each other, and the first swing arm (10) and the second swing arm (11) are elastically connected to the frame (1) respectively.

2. A mosquito coil material forming mechanism according to claim 1, characterized in that: The lower parts of the first swing arm (10), the second swing arm (11) and the sliding roller seat (9) are all provided with a driving assembly; the upper parts of the first swing arm (10) and the second swing arm (11) are connected to the frame (1) through an elastic element (16), and the upper parts of the first swing arm (10) and the second swing arm (11) are respectively abutted against a first top head (7) and a second top head (8).

3. A mosquito coil material forming mechanism according to claim 2, characterized in that: The first radial adjustment roller (4), the second radial adjustment roller (5), and the axial adjustment roller (6) are rotatably arranged on the upper parts of the first swing arm (10), the second swing arm (11), and the sliding roller seat (9), and are connected to the driving assembly via a connecting shaft running through the first swing arm (10), the second swing arm (11), and the sliding roller seat (9).

4. A mosquito coil material forming mechanism according to claim 1, characterized in that: It also includes a displacement detection module (17) for detecting the displacement distance of the first plug (7).

5. The mosquito coil material forming mechanism according to claim 3, characterized in that: The first transmission component comprises a guide rod (12) and a ball screw pair (18); the sliding roller seat (9) is slidably connected to the guide rod (12) and the sliding roller seat (9) is nested on a nut seat of the ball screw pair (18); and the ball screw pair (18) is transmission-connected to the motor.

6. A mosquito coil material forming mechanism according to claim 5, characterized in that: The guide rod (12) and the ball screw pair (18) are fixedly connected to the frame (1).

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