PTC (Positive Temperature Coefficient) automatic film rolling and pipe penetrating machine

Abstract

The invention relates to the technical field of pipe penetrating machines, in particular to a PTC automatic film rolling pipe penetrating machine. The pipe penetrating machine sequentially comprises a film rolling assembly, a film discharging assembly, electric scissors and a roller feeding assembly from right to left, and further comprises a collecting assembly arranged below the roller feeding assembly. The film rolling assembly is arranged on one side of the film discharging assembly and conveys a film rolled into a cylindrical shape into the film discharging assembly; the film discharging assembly conducts rectangular limiting on the cylindrical film and outputs the cylindrical film into an aluminum pipe fixed to the roller feeding assembly. The film discharging assembly is arranged, traction of film discharging is achieved through the forward transmission belts arranged up and down, and it is ensured that the film is kept in a tensioned state in the transportation process; the film rolling assembly, the film discharging assembly and the roller feeding assembly are arranged to be matched to achieve automation of a film from a rolling state to pipe penetrating completion, and the automation degree of pipe penetrating is greatly improved; the electric scissors are arranged to be matched with the rotating roller, continuous pipe penetrating operation of small sections of aluminum pipes is achieved, the structure is simple, and the manufacturing cost and the using cost are low.

Description

Technical Field

[0001] The invention relates to the technical field of tube threading machines, in particular to a PTC automatic film rolling tube threading machine. Background Art

[0002] PTC refers to positive temperature coefficient thermistor, which is widely used in electronics and electrical engineering because of its characteristic that the resistance value increases with the increase of temperature. The core components of PTC are heating core and aluminum tube. During the assembly process of heating core, it is necessary to arrange film in the aluminum tube in advance. The existing tube threading method is mostly done manually, which not only has high labor cost, but also has uneven tube threading quality. Although there are also automatic film rolling machines, manual tube threading and cutting operations are still required, and the degree of automation is low. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide a PTC automatic film rolling and pipe threading machine, which has a high degree of automation, low loss during the pipe threading process, a simple structure, and supports continuous pipe threading operations of multiple sections of aluminum pipes.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is: a PTC automatic film rolling and tube threading machine, which includes a film rolling assembly, a film outlet assembly and a roller feeding assembly from right to left, and the film rolling assembly is arranged on one side of the film outlet assembly and conveys the film rolled into a cylindrical shape into the film outlet assembly; the film outlet assembly includes a molding assembly, a first guide channel, a forward conveyor belt and a second guide channel from right to left, and the molding assembly includes a slide bar, a gravity roller and a lifting roller, and the two slide bars are symmetrically arranged, and the gravity roller is arranged above the lifting roller and the two ends of the two are respectively slidably connected to the two slide bars, wherein The two ends of the lifting roller are respectively connected with a lifting motor. The lifting motor is started to operate to make the lifting roller slide up and down. The side walls of the lifting roller and the gravity roller are both provided with a plurality of rectangular grooves; two forward conveyor belts are arranged up and down, and the film rolled into a cylindrical shape passes through the gap between the two forward conveyor belts and realizes forward movement under the action of the two forward conveyor belts; the roller feeding assembly is used to fix and switch the aluminum tube, and the film rolled into a cylindrical shape passes through the gap between the lifting roller and the gravity roller, the first guide channel, the gap between the two forward conveyor belts, and the second guide channel in turn to reach the aluminum tube in the roller feeding assembly.

[0005] Furthermore, the tube threading machine also includes an electric scissors, which are arranged between the film outlet assembly and the roller feeding assembly. When the film completely enters the aluminum tube, the electric scissors are driven to cut the film.

[0006] Furthermore, the roller feeding assembly includes a rotating roller, a material stacking rack, a push plate and a pressing piece. The rotating roller is provided with a plurality of positioning grooves for the aluminum tubes to be embedded in the ring. The pressing piece is arranged above the rotating roller, the material stacking rack is arranged on one side of the roller, and the push plate is arranged at the bottom of the material stacking rack. The stacked aluminum tubes are placed in the material stacking rack. The push plate is started to push the aluminum tubes into the positioning grooves, and then the pressing piece is started to descend to fix the aluminum tubes.

[0007] Furthermore, the roller feeding assembly also includes a push-back member, which is arranged above the rotating roller. The push-back member is started to move forward and backward to adjust the position of the aluminum tube.

[0008] Furthermore, the film roll assembly includes a film loosening mechanism, a fixed track, a forming mold and a shrinking circle mold. The film loosening mechanism is used to fix the rolled film, the fixed track is arranged on one side of the film loosening mechanism, and the forming mold and several shrinking circle molds are arranged on the fixed track from right to left in sequence, wherein the forming mold is provided with an arc-shaped forming hole, a truncated cone-shaped limiting channel is provided on the left side of the forming hole, and the shrinking circle mold is provided with a limiting hole corresponding to the forming hole, and the diameters of the limiting holes on different shrinking circle molds decrease in sequence from right to left according to their positions.

[0009] Furthermore, the film loosening mechanism includes a fixed roller, a tensioning wheel group, a limiting roller and a clamping plate, the fixed roller is used to fix the rolled film, the tensioning wheel group is arranged on one side of the fixed roller, the limiting roller is arranged on the other side of the fixed roller, and the clamping plate is arranged below the fixed roller. The film starts from the fixed roller and passes through the gaps between the tensioning wheel group, the limiting roller and the clamping plate in sequence, and finally enters the forming hole to form a cylindrical shape. The clamping plate is controlled to move up and down to adjust the movement resistance of the film.

[0010] Furthermore, the stacking rack includes a sliding track and two pallets arranged opposite to each other. The pallet is slidably connected to the sliding track and a pallet cylinder is provided on one side of the pallet. The pallet is started to slide along the sliding track; limiting convex strips are provided on both sides of the pallet for placing the stacked aluminum tubes, and an extension plate is provided on the bottom side of the pallet. The push plate pushes the aluminum tube on the bottom layer to move along the extension plate into the positioning groove.

[0011] Furthermore, the film outlet assembly also includes an advance and retreat mechanism, which is connected to the second guide channel and is driven to achieve movement of the second guide channel.

[0012] Furthermore, the molding component also includes a return plate and a spring. The return plate is sleeved on the slide rod and is located between the gravity roller and the lifting roller. Four springs connect the return plate and the lifting roller.

[0013] Furthermore, the pipe threading machine also includes a collecting assembly, which includes a conveyor belt and a collecting box. One side of the conveyor belt is arranged below the roller feeding assembly, and the collecting box is arranged below the other side of the conveyor belt.

[0014] By adopting the above technical solution, the beneficial effects of the present invention are: 1. The present invention sets a film discharging component, and utilizes the forward transmission belts arranged up and down to realize the traction of the film discharging, so as to ensure that the film remains in a tensioned state during transportation; sets a shaping component, and utilizes the lifting rollers that can move up and down to carry the film to transition from a cylindrical shape to a rectangular shape, so as to prevent the edge of the film from friction and loss when entering the first guide channel; sets a film rolling component, a film discharging component and a roller feeding component to realize the automation of the film from a rolled state to a tube threading state, thereby greatly improving the degree of automation of the tube threading; sets an electric scissors to cooperate with the rotating rollers to realize the continuous tube threading operation of small sections of aluminum tubes, and the structure is simple, and the manufacturing cost and the use cost are low.

[0015] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

[0016] Undoubtedly, these and other objects of the present invention will become more apparent after the following detailed description of the preferred embodiment described with reference to various figures and drawings.

[0017] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, one or several preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation of the present invention.

[0019] In the drawings, the same reference numerals are used for the same components and the drawings are schematic and not necessarily drawn to scale.

[0020] In order to more clearly illustrate the embodiments of the present invention 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 one or several embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on such drawings without paying creative work.

[0021] Figure 1 This is a front view of the overall structure of a PTC automatic film rolling and tube threading machine of the present invention; Figure 2This is a three-dimensional diagram of the overall structure of a PTC automatic film rolling and tube threading machine of the present invention; Figure 3 It is a schematic structural diagram of a film rolling component of a PTC automatic film rolling and tube threading machine of the present invention; Figure 4 It is a schematic diagram of the structure of a molding component of a PTC automatic film rolling and tube threading machine of the present invention; Figure 5 It is a structural schematic diagram of a film discharging assembly and a roller feeding assembly of a PTC automatic film rolling and tube threading machine of the present invention; Figure 6 It is a structural schematic diagram of a film discharging assembly and a roller feeding assembly of a PTC automatic film rolling and tube threading machine of the present invention from another perspective; Figure 7 This is a schematic diagram of the structure of a material stacking frame of a PTC automatic film rolling and tube threading machine of the present invention; Figure 8 The present invention is a schematic diagram of the structure of a collection component of a PTC automatic film rolling and tube threading machine.

[0022] Description of main reference numerals: 1. Film roll assembly; 11. Loose membrane mechanism; 111. Fixed roller, 112. Tensioning wheel set, 113. Limiting roller, 114. Clamping plate; 12. Fixed track; 13. Molding mold; 131. Molding hole, 132. Limiting channel; 14. Shrinking mold; 141. Limiting hole; 2. Film outlet assembly; 21. Molding components; 211. Sliding rod, 212. Gravity roller, 213. Lifting roller, 214. Lifting motor, 215. Rectangular groove, 216. Return plate, 217. Spring; 22. The first guide channel; 23. Forward conveyor belt; 24. Second guide channel; 25. Advance and retreat mechanism; 3. Roller feeding assembly; 31. Rotating roller; 311. Positioning slot; 32. Stacking rack; 321. Sliding track; 322. Pallet; 3221. Limiting convex strip, 3222. Extension plate; 323. Cardboard cylinder; 33. Push plate; 34. Pressing piece; 35. Push back piece; 4. Electric scissors; 5. Collect components; 51. Conveyor belt; 52. Collection box. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but are not used to limit the present invention.

[0024] Reference Figure 1-8 The present invention provides a technical solution: a PTC automatic film rolling and tube threading machine, which includes a film rolling component 1, a film outlet component 2, an electric scissors 4 and a roller feeding component 3 from right to left; and also includes a collecting component 5 arranged below the roller feeding component 3.

[0025] The film roll assembly 1 is arranged at one side of the film outlet assembly 2 and conveys the film rolled into a cylindrical shape into the film outlet assembly 2. The film roll assembly 1 includes a film loosening mechanism 11, a fixed track 12, a forming mold 13 and a shrinking mold 14. The film loosening mechanism 11 is used to fix the rolled film. Specifically, the film loosening mechanism 11 includes a fixed roller 111, a tensioning wheel group 112, a limiting roller 113 and a clamping plate 114. The fixed roller 111 is used to fix the rolled film. If necessary, the fixed roller can be connected to a film loosening motor to adjust the rotation speed of the rolled film. To ensure that the film can remain flat when entering the forming mold 13, the tensioning wheel group 112 is arranged on one side of the fixed roller 111, the limiting roller 113 is arranged on the other side of the fixed roller 111, and the clamping plate 114 is arranged below the fixed roller 111. The film starts from the fixed roller 111 and passes through the gaps between the tensioning wheel group 112, the limiting roller 113 and the clamping plate 114 in sequence, and finally enters the molding hole 131 to form a cylindrical shape. The bottom of the clamping plate 114 is connected to the film clamping cylinder for controlling the up and down movement of the clamping plate 114 to adjust the movement resistance of the film.

[0026] The fixed track 12 is arranged on one side of the film loosening mechanism 11, and the forming mold 13 and a plurality of shrinking molds 14 are arranged on the fixed track 12 from right to left. Among them, the forming mold 13 is provided with an arc-shaped shaping hole 131, and the two sides of the sheet film are rolled up to form a cylindrical shape after passing through the shaping hole 131. The left side of the shaping hole 131 is provided with a truncated cone-shaped limiting channel 132, and the limiting channel 132 is used for the shrinking circle of the cylindrical film to make a transition. The shrinking mold 14 is provided with a limiting hole 141 corresponding to the shaping hole 131, and the diameter of the limiting holes 141 on different shrinking molds 14 decreases from right to left according to their positions, and the type and distance of the shrinking mold 14 can be adjusted according to the diameter of the film to be rolled out.

[0027] The film discharging assembly 2 includes a molding assembly 21, a first guide channel 22, a forward conveyor belt 23 and a second guide channel 24 from right to left. The molding assembly 21 includes a slide bar 211, a gravity roller 212, a lifting roller 213, a return plate 216 and a spring 217. The two slide bars 211 are symmetrically arranged, and the gravity roller 212 is arranged above the lifting roller 213 and the two ends of the two slide bars 211 are slidably connected. Among them, the two ends of the lifting roller 213 are respectively connected to the lifting motor 214. When the lifting motor 214 is started, the lifting roller 213 slides up and down. At this time, the gravity roller 212 presses the lifting roller 213 tightly under the action of gravity and moves up and down accordingly. In order to prevent the gravity roller 212 from over-extruding and causing irreversible deformation of the film, a plurality of rectangular grooves 215 are provided on the side walls of the lifting roller 213 and the gravity roller 212. At the same time, the return plate 216 is sleeved on the slide bar 211 and located between the gravity roller 212 and the lifting roller 213. Four springs 217 connect the return plate 216 and the lifting roller 213 to increase the interaction force between the two. Two forward conveyor belts 23 are arranged up and down. The conveyor belts are common conveyor belt structures. The film rolled into a cylindrical shape passes through the gap between the two forward conveyor belts 23 and realizes forward movement under the action of the two forward conveyor belts. The film rolled into a cylindrical shape passes through the gap between the lifting roller 213 and the gravity roller 212, the first guide channel 22, the gap between the two forward conveyor belts 23, and the second guide channel 24 in turn to reach the aluminum tube in the roller feeding assembly 3. During its working process, the gravity roller 212 repeatedly moves up and down at the same interval to prevent the cylindrical film from causing wear and shearing when it enters the rectangular guide channel. In order to increase the connection between the second guide channel 24 and the aluminum tube, the film outlet assembly 2 further includes an advance and retreat mechanism 25 , which is connected to the second guide channel 24 and is driven to move the second guide channel 24 .

[0028] The electric scissors 4 are arranged between the film outlet assembly 2 and the roller feeding assembly 3. When the film completely enters the aluminum tube, the electric scissors 4 are driven to cut the film.

[0029] The roller feeding assembly 3 is used to fix and switch the aluminum tube, and includes a rotating roller 31, a material rack 32, a push plate 33, a pressing member 34 and a rear push member 35. The rotating roller 31 is provided with a plurality of positioning grooves 311 for the aluminum tube to be embedded, and the pressing member 34 is arranged above the rotating roller 31, and the pressing member 34 can be connected to the slide rail to adjust its front and rear position. The stacking rack 32 is arranged on one side of the roller, and the push plate 33 is arranged at the bottom of the stacking rack 32. The stacked aluminum tubes are placed in the stacking rack 32. The push plate 33 is started to push the aluminum tubes into the positioning groove 311. Specifically, the stacking rack 32 includes a sliding track 321 and two clamping plates 322 arranged opposite to each other. The clamping plates 322 are slidably connected to the sliding track 321 and a clamping plate cylinder 323 is arranged on one side. The clamping plate cylinder 323 is started to make the clamping plate 322 slide along the sliding track 321. When the length of the aluminum tube changes, the length of the stacking rack 32 can be adjusted to increase the use range of the equipment. The two sides of the clamping plate 322 are provided with limiting convex strips 3221 for placing the stacked aluminum tubes. The bottom side of the clamping plate 322 is provided with an extension plate 3222. The push plate 33 pushes the aluminum tube at the bottom layer to move along the extension plate 3222 to the positioning groove 311, and then the pressing member 34 is started to descend to fix the aluminum tube. In order to further adjust the position of the aluminum tube in the positioning groove 311, the push piece 35 is set above the rotating roller 31, and the push piece 35 is started to move back and forth to adjust the position of the aluminum tube. When manual feeding is performed, the position of the aluminum tube can also be adjusted by the push piece 35.

[0030] The collecting assembly 5 includes a conveyor belt 51 and a collecting box 52. One side of the conveyor belt 51 is arranged below the roller feeding assembly 3, and the collecting box 52 is arranged below the other side of the conveyor belt 51. After the tube threading is completed, the aluminum tube falls above the conveyor belt 51 under the action of the rotating roller 31 and is transported to the collecting box 52.

[0031] Working principle: under the traction of the forward conveyor belt 23, the film starts from the fixed roller 111 and passes through the gap between the tensioning wheel group 112, the limiting roller 113 and the clamping plate 114 in turn to enter the shaping hole 131 to form a cylindrical shape, and then the diameter gradually decreases under the action of the shrinking circle mold 14 until the shape transition is performed in the molding component 21 and finally enters the first guide groove, and then enters the aluminum tube fixed on the rotating roller 31 under the action of the second guide groove; when it is no longer possible to continue to thread the tube, the electric scissors 4 are started for cutting, and the rotating roller 31 continues to rotate, while putting the aluminum tube that has been threaded into the conveyor belt 51, and receiving the aluminum tube that falls from the stacking rack 32, so as to realize uninterrupted threading action.

[0032] It should be understood that the embodiments disclosed in the present invention are not limited to the specific processing steps or materials disclosed herein, but should be extended to equivalent substitutions of such features understood by ordinary technicians in the relevant field. It should also be understood that the terms used herein are only used for the purpose of describing specific embodiments and are not meant to be limiting.

[0033] The "embodiment" mentioned in the specification means that the specific features or characteristics described in conjunction with the embodiment are included in at least one embodiment of the present invention. Therefore, the phrases or "embodiment" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0034] In addition, the described features or characteristics may be combined in one or more embodiments in any other suitable manner. In the above description, some specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of the embodiments of the present invention. However, those skilled in the relevant art will understand that the present invention can be implemented without one or more of the above specific details or can also be implemented using other methods, components, materials, etc.

Claims

1. A PTC automatic film rolling and tube threading machine, characterized in that: From right to left, it includes a film roll assembly, a film outlet assembly and a roller feeding assembly, the film roll assembly is arranged on one side of the film outlet assembly and conveys the cylindrical film into the film outlet assembly; the film outlet assembly includes a molding assembly, a first guide channel, a forward conveyor belt and a second guide channel from right to left, the molding assembly includes a slide bar, a gravity roller and a lifting roller, the two slide bars are symmetrically arranged, the gravity roller is arranged above the lifting roller and the two ends of the gravity roller are respectively connected to the two slide bars for sliding, wherein the two ends of the lifting roller are respectively connected to the lifting roller The motor is started to operate the lifting motor to make the lifting roller slide up and down. The side walls of the lifting roller and the gravity roller are both provided with a plurality of rectangular grooves. Two forward conveyor belts are arranged up and down. The film rolled into a cylindrical shape passes through the gap between the two forward conveyor belts and realizes forward movement under the action of the two forward conveyor belts. The roller feeding assembly is used to fix and switch the aluminum tube. The film rolled into a cylindrical shape passes through the gap between the lifting roller and the gravity roller, the first guide channel, the gap between the two forward conveyor belts, and the second guide channel in sequence to reach the aluminum tube in the roller feeding assembly.

2. The PTC automatic film rolling and tube threading machine according to claim 1 is characterized in that: It also includes an electric scissors, which are arranged between the film outlet assembly and the roller feeding assembly. When the film completely enters the aluminum tube, the electric scissors are driven to cut the film.

3. The PTC automatic film rolling and tube threading machine according to claim 2 is characterized in that: The roller feeding assembly includes a rotating roller, a material stacking rack, a push plate and a pressing piece. The rotating roller is provided with a plurality of positioning grooves for the aluminum tubes to be embedded. The pressing piece is arranged above the rotating roller, the material stacking rack is arranged on one side of the roller, and the push plate is arranged at the bottom of the material stacking rack. The stacked aluminum tubes are placed in the material stacking rack. The push plate is started to push the aluminum tubes into the positioning grooves, and then the pressing piece is started to descend to fix the aluminum tubes.

4. The PTC automatic film rolling and tube threading machine according to claim 3 is characterized in that: The roller feeding assembly also includes a push-back member, which is arranged above the rotating roller. The push-back member is started to move forward and backward to adjust the position of the aluminum tube.

5. The PTC automatic film rolling and tube threading machine according to claim 1 is characterized in that: The film roll assembly includes a film loosening mechanism, a fixed track, a forming mold and a shrinking circle mold. The film loosening mechanism is used to fix the rolled film. The fixed track is arranged on one side of the film loosening mechanism. The forming mold and several shrinking circle molds are arranged on the fixed track from right to left in sequence. The forming mold is provided with an arc-shaped shaping hole, and a truncated cone-shaped limiting channel is provided on the left side of the shaping hole. The shrinking circle mold is provided with a limiting hole corresponding to the shaping hole, and the diameters of the limiting holes on different shrinking circle molds decrease in sequence from right to left according to their positions.

6. The PTC automatic film rolling and tube threading machine according to claim 5, characterized in that: The film loosening mechanism includes a fixed roller, a tensioning wheel group, a limiting roller and a clamping plate, the fixed roller is used to fix the rolled film, the tensioning wheel group is arranged on one side of the fixed roller, the limiting roller is arranged on the other side of the fixed roller, and the clamping plate is arranged below the fixed roller. The film starts from the fixed roller and passes through the gaps between the tensioning wheel group, the limiting roller and the clamping plate in sequence, and finally enters the forming hole to form a cylindrical shape. The clamping plate is controlled to move up and down to adjust the movement resistance of the film.

7. The PTC automatic film rolling and tube threading machine according to claim 3 is characterized in that: The stacking rack includes a sliding track and two pallets arranged opposite to each other. The pallet is slidably connected to the sliding track and a pallet cylinder is provided on one side of the pallet. The pallet is slidably connected to the sliding track and a pallet cylinder is provided on one side. The pallet is slidably connected to the sliding track and the pallet cylinder is started to slide along the sliding track. Limiting convex strips are provided on both sides of the pallet for placing the stacked aluminum tubes. An extension plate is provided on the bottom side of the pallet. The push plate pushes the aluminum tubes on the bottom layer to move along the extension plate into the positioning groove.

8. The PTC automatic film rolling and tube threading machine according to claim 1 is characterized in that: The film discharging assembly also includes an advance and retreat mechanism, which is connected to the second guide channel and is driven to realize the movement of the second guide channel.

9. The PTC automatic film rolling and tube threading machine according to claim 1, characterized in that: The molding component also includes a return plate and a spring. The return plate is sleeved on the slide bar and is located between the gravity roller and the lifting roller. Four springs connect the return plate and the lifting roller.

10. The PTC automatic film rolling and tube threading machine according to claim 1, characterized in that: It also includes a collecting assembly, which includes a conveyor belt and a collecting box. One side of the conveyor belt is arranged below the roller feeding assembly, and the collecting box is arranged below the other side of the conveyor belt.

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