PTC electric heater tube shell penetrating membrane conveying bearing plate

Abstract

The utility model discloses a PTC electric heater tube shell film penetrating conveying bearing plate, including conveying chain for driving PTC electric heater tube shell moves between film penetrating station, connecting plate is located two sets of conveying chain top and is opposite and is connected with conveying chain fixedly, bearing seat board is set up in the connecting plate top, the upper surface of bearing seat board is equipped with recessed groove, and the shape of recessed groove is adapted to the outer wall of PTC electric heater tube shell, so as to support the tube shell stably in the film penetrating process, positioning connection mechanism, including at least two positioning holes and corresponding locating piece, and the positioning hole is set up in the four around sides of connecting plate, and the locating piece is set up in the diagonal side of bearing seat board and is inserted with the positioning hole correspondingly and is matched, and positioning peg is detachably connected with the locating piece through the positioning hole from the below of connecting plate, and the connecting plate is locked and fixed with bearing seat board.

Description

Technical Field

[0001] This utility model relates to a PTC electric heater shell membrane conveying support plate. Background Technology

[0002] PTC electric heaters, a new type of heating element with constant-temperature heating characteristics, have a core structure consisting of an insulating film fitted inside a metal tube shell, into which a PTC heating element is inserted. On automated production lines, the tube shell insertion process requires a support device capable of stably supporting the tube shell and accurately transporting it to the insertion station.

[0003] In the existing technology, the conveyor bearing plate of PTC electric heater tube shell is mostly connected by ordinary bolts and nuts. Bolt connection requires multiple rotation operations with the help of tools, which is inefficient and cannot meet the needs of high-frequency change. Secondly, the vibration generated during the operation of the conveyor chain can easily cause the bolts to loosen, causing the bearing plate to shift position, which in turn affects the concentricity and perpendicularity of the tube shell through the membrane. The insulating membrane is easily damaged or skewed, resulting in a decrease in the product qualification rate.

[0004] Therefore, a PTC electric heater shell through-film conveying support plate is proposed. Utility Model Content

[0005] The purpose of this utility model is to provide a PTC electric heater shell conveying support plate to solve the problem mentioned in the background art that most PTC electric heater shell conveying support plates use ordinary bolt and nut connections, which require multiple rotation operations with tools, resulting in low assembly and disassembly efficiency.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a PTC electric heater tube shell transmembrane conveying support plate, comprising: A conveyor chain is used to drive the PTC electric heater shell to move between the film-piercing stations; A connecting plate is located above the two sets of conveyor chains, positioned opposite to each other, and fixedly connected to the conveyor chains. A support plate is erected above the connecting plate; The upper surface of the bearing plate is provided with a concave groove, the shape of which is adapted to the outer wall of the PTC electric heater tube shell to stably support the tube shell during the film-piercing process. The positioning and connecting mechanism includes at least two positioning holes and corresponding positioning elements. The positioning holes are opened on the four sides of the connecting plate, and the positioning elements are disposed on the diagonal side of the bearing base plate and are inserted and engaged with the positioning holes accordingly. A positioning bolt passes through the positioning hole from below the connecting plate and is detachably connected to the positioning component, thereby locking and fixing the connecting plate to the bearing seat plate. Preferably, the positioning element includes a positioning protrusion located on the bottom surface of the diagonal side of the bearing plate and engaging with the positioning hole. A connecting channel is formed in the middle of the positioning protrusion, which runs vertically through the positioning protrusion and the bearing plate. A bearing groove is formed on the outer periphery of the connecting channel. An elastic connector is provided inside the bearing groove so that the positioning bolt passes through the connecting channel and locks with the elastic connector.

[0007] Preferably, the elastic connector includes a spring-loaded plate disposed on the upper part of the bearing groove, a pressing cylinder disposed on the lower part of the spring-loaded plate and extending into the bearing groove, and a return spring disposed on the lower part of the pressing cylinder at the bearing groove, so that the spring-loaded plate can move elastically inside the bearing groove by means of the return spring.

[0008] Preferably, the side wall of the bearing groove is provided with a limiting groove, and the outer peripheral surface of the pressing cylinder is provided with a limiting protrusion that slides with the limiting groove to limit the lifting stroke of the pressing cylinder.

[0009] Preferably, the positioning bolt includes a connecting bolt rod, the connecting bolt rod is T-shaped, a rotating groove is provided at the top of the connecting bolt rod, a rotating seat is rotatably connected inside the rotating groove, and a locking rod is provided at the top of the rotating seat.

[0010] Preferably, a plurality of balls are provided between the rotating seat and the connecting bolt, the balls being embedded in the annular raceway of the rotating groove, thereby converting the friction between the rotating seat and the connecting bolt into rolling friction.

[0011] Preferably, the inner wall of the connecting channel is provided with an axially extending guide groove, the top of the guide groove is connected to a horizontally arranged fastening groove, and the fastening groove and the guide groove form a 90° angle.

[0012] Preferably, the top surface of the pressing cylinder has a rotating groove corresponding to the fastening groove, and the locking rod can slide into the guide groove and rotate to lock into the fastening groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This utility model adopts a detachable positioning bolt and positioning connection mechanism, which can be assembled and disassembled by two simple actions of pressing and rotating without the need for tools. Compared with the traditional bolt and nut connection method, which requires tools and multiple rotation operations, it can be assembled and disassembled more quickly, greatly improving the assembly and disassembly efficiency.

[0014] Meanwhile, this application achieves a self-locking and anti-loosening function through the cooperation of positioning holes and positioning parts, the use of elastic connecting parts, the elastic pre-tightening force of springs, and the snapping of locking rods. This reduces the negative impact of conveyor chain vibration, effectively prevents the bearing plate from shifting position, ensures the concentricity and perpendicularity of the tube shell during the film-piercing process, ensures the stability and precision of the bearing plate, and improves product quality and pass rate.

[0015] The device employs a concave groove that matches the shape of the outer wall of the tube shell and a precise positioning connection mechanism (including positioning bolts, elastic connectors, etc.), which can stably support the tube shell during the membrane insertion process, avoiding problems such as membrane damage and skewing caused by unstable support, improving the accuracy of membrane insertion, and ensuring the product qualification rate.

[0016] The disassembly mechanism of this application reduces the time cost when replacing parts, especially when frequent mold changes or production line adjustments are required, which can effectively improve the flexibility and response speed of the production line. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a cross-sectional view of the bearing seat plate according to an embodiment of the present utility model; Figure 3 This is an enlarged schematic diagram of the structure at point A in an embodiment of this utility model; Figure 4 This is an enlarged structural schematic diagram of the bearing seat plate according to an embodiment of the present utility model; Figure 5 This is a cross-sectional view of the positioning bolt in an embodiment of the present invention. Figure 6 This is an enlarged schematic diagram of the structure at point B in an embodiment of this utility model; Figure 7 This is a schematic diagram of the positioning bolt structure according to an embodiment of the present utility model.

[0018] In the diagram: 1. Conveyor chain; 2. Connecting plate; 21. Positioning hole; 3. Bearing seat plate; 31. Recessed groove; 32. Positioning component; 321. Positioning protrusion; 322. Connecting channel; 3221. Guide groove; 3222. Fastening groove; 323. Bearing groove; 324. Elastic connector; 3241. Spring plate; 3242. Pressing cylinder; 32421. Rotating groove; 3243. Return spring; 3244. Limiting protrusion; 325. Limiting groove; 4. Positioning bolt; 41. Connecting bolt rod; 42. Rotating groove; 43. Rotating seat; 44. Locking top rod; 45. Ball bearing. Detailed Implementation

[0019] To address the problem that most PTC electric heater tube shell conveying support plates use ordinary bolt and nut connections, which require multiple rotations with tools and result in low assembly and disassembly efficiency, this utility model provides a PTC electric heater tube shell membrane conveying support plate. The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0020] Please see Figure 1-7 This utility model provides a PTC electric heater tube shell through-film conveying support plate, comprising: Conveyor chain 1 is used to drive the PTC electric heater shell to move between the film-piercing stations; Connecting plate 2 is located above the two sets of conveyor chains 1, arranged opposite to each other, and fixedly connected to the conveyor chains 1; The supporting base plate 3 is erected above the connecting plate 2; The upper surface of the bearing plate 3 is provided with a concave groove 31, the shape of which is adapted to the outer wall of the PTC electric heater tube shell to stably support the tube shell during the film-piercing process. The positioning and connecting mechanism includes at least two positioning holes 21 and corresponding positioning elements 32. The positioning holes 21 are opened on the four sides of the connecting plate 2, and the positioning elements 32 are disposed on the diagonal side of the bearing base plate 3 and are inserted and engaged with the positioning holes 21 respectively. A positioning bolt 4, passing through the positioning hole 21 from below the connecting plate 2, is detachably connected to the positioning member 32, locking the connecting plate 2 and the bearing seat plate 3 in place. The positioning bolt 4 includes a connecting bolt rod 41, which is T-shaped. A rotating groove 42 is formed at the top of the connecting bolt rod 41, and a rotating seat 43 is rotatably connected inside the rotating groove 42. A locking rod 44 is provided at the top of the rotating seat 43. A plurality of ball bearings 45 are provided between the rotating seat 43 and the connecting bolt rod 41. The ball bearings 45 are embedded in the annular raceway of the rotating groove 42, converting the friction between the rotating seat 43 and the connecting bolt rod 41 into rolling friction.

[0021] The positioning component 32 includes a positioning protrusion 321 located on the bottom surface of the diagonal side of the bearing plate 3 and inserted into the positioning hole 21. A connecting channel 322 is formed in the middle of the positioning protrusion 321, which runs vertically through the positioning protrusion 321 and the bearing plate 3. A bearing groove 323 is formed on the outer periphery of the connecting channel 322. An elastic connector 324 is provided inside the bearing groove 323 so that the positioning bolt 4 passes through the connecting channel 322 and locks with the elastic connector 324.

[0022] The elastic connector 324 includes a spring-loaded plate 3241 disposed on the upper part of the bearing groove 323. A pressing cylinder 3242 is disposed on the lower part of the spring-loaded plate 3241 extending into the bearing groove 323. A return spring 3243 is disposed on the lower part of the pressing cylinder 3242 at the bearing groove 323, so that the spring-loaded plate 3241 can move elastically inside the bearing groove 323 by means of the return spring 3243. A limiting groove 325 is formed on the side wall of the bearing groove 323. A limiting protrusion 3244 is provided on the outer peripheral surface of the pressing cylinder 3242, which slides with the limiting groove 325 to limit the lifting stroke of the pressing cylinder 3242.

[0023] The inner wall of the connecting channel 322 has an axially extending guide groove 3221. The top end of the guide groove 3221 communicates with a horizontally arranged fastening groove 3222, and the fastening groove 3222 and the guide groove 3221 form a 90° angle. The top surface of the pressing cylinder 3242 has a rotating groove 32421 corresponding to the fastening groove 3222. The locking rod 44 can slide into the guide groove 3221 and rotate to lock into the fastening groove 3222.

[0024] The working principle of the PTC electric heater shell membrane conveying support plate provided by this utility model is as follows: Align the support plate 3 with the connecting plate 2, so that the positioning protrusion 321 at the bottom of the support plate 3 is aligned with the positioning hole 21 on the connecting plate 2. The positioning protrusion 321 and the positioning hole 21 are fitted with a clearance to ensure that the support plate 3 can be smoothly inserted into the positioning hole 21.

[0025] The positioning bolt 4 is passed upward through the positioning hole 21 from below the connecting plate 2, so that the locking rod 44 of the positioning bolt 4 passes through the connecting channel 322 and moves upward along the guide groove 3221.

[0026] Pressing the spring plate 51 on the bearing seat plate 3 causes the pressing cylinder 52 at the bottom of the spring plate 51 to compress the reset spring 53, and the pressing cylinder 52 moves downward in the bearing groove 323.

[0027] When the locking rod 44 of the positioning bolt 4 reaches the guide groove 3221 at the top of the connecting channel 322, press the spring plate 51 to fully expose the locking rod 44. Then, rotate the locking rod 44 90° to align it with the engaging groove 3222.

[0028] Release the pressure on the spring plate 51, and the return spring 53 extends elastically, pushing the spring plate 51 upward and locking the locking rod 44 into the locking groove 3222, thus completing the fixed connection between the bearing seat plate 3 and the connecting plate 2.

[0029] Place the PTC electric heater shell into the concave groove 31 of the support plate 3, ensuring that the shell fits tightly into the concave groove 31 and that the central axis of the shell is aligned with the central axis of the concave groove 31.

[0030] Start the conveyor chain 1. The conveyor chain 1 drives the connecting plate 2 to move, which in turn drives the bearing seat plate 3 and the tube shell on it to move between the membrane insertion stations.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A PTC electric heater tube shell transmembrane conveying support plate, characterized in that, include: Two sets of conveyor chains (1) are used to drive the PTC electric heater shell to move between the film-piercing stations; A connecting plate (2) is located above the two sets of conveyor chains (1) and is fixedly connected to the conveyor chains (1); The supporting base plate (3) is erected above the connecting plate (2); The upper surface of the bearing plate (3) is provided with a concave groove (31), the shape of which is adapted to the outer wall of the PTC electric heater tube shell to stably support the tube shell during the film-piercing process. The positioning and connecting mechanism includes at least two positioning holes (21) and corresponding positioning elements (32). The positioning holes (21) are opened on the four sides of the connecting plate (2), and the positioning elements (32) are set on the diagonal side of the bearing base plate (3) and are inserted into the positioning holes (21) accordingly. The positioning bolt (4) passes through the positioning hole (21) from below the connecting plate (2) and is detachably connected to the positioning member (32) to lock and fix the connecting plate (2) and the bearing seat plate (3).

2. The PTC electric heater tube shell transmembrane conveying support plate according to claim 1, characterized in that: The positioning component (32) includes a positioning protrusion (321) located on the bottom surface of the diagonal side of the bearing plate (3) and inserted into the positioning hole (21). A connecting channel (322) is provided in the middle of the positioning protrusion (321) and the bearing plate (3) in a vertical direction. A bearing groove (323) is provided on the outer periphery of the connecting channel (322). An elastic connector (324) is provided inside the bearing groove (323) so that the positioning bolt (4) passes through the connecting channel (322) and locks with the elastic connector (324).

3. The PTC electric heater tube shell membrane conveying support plate according to claim 2, characterized in that: The elastic connector (324) includes a spring plate (3241) disposed on the upper part of the bearing groove (323). A pressing cylinder (3242) is disposed on the lower part of the spring plate (3241) and extends into the bearing groove (323). A return spring (3243) is disposed on the lower part of the pressing cylinder (3242) at the bearing groove (323) so that the spring plate (3241) can move elastically inside the bearing groove (323) by the return spring (3243).

4. The PTC electric heater tube shell transmembrane conveying support plate according to claim 3, characterized in that: The side wall of the bearing groove (323) is provided with a limiting groove (325), and the outer peripheral surface of the pressing cylinder (3242) is provided with a limiting protrusion (3244) that slides with the limiting groove (325) to limit the lifting stroke of the pressing cylinder (3242).

5. A PTC electric heater tube shell transmembrane conveying support plate according to claim 4, characterized in that: The positioning bolt (4) includes a connecting bolt rod (41), which is T-shaped. A rotating groove (42) is provided at the top of the connecting bolt rod (41), and a rotating seat (43) is rotatably connected inside the rotating groove (42). A locking rod (44) is provided at the top of the rotating seat (43).

6. A PTC electric heater tube shell transmembrane conveying support plate according to claim 5, characterized in that: A plurality of balls (45) are provided between the rotating seat (43) and the connecting bolt (41). The balls (45) are embedded in the annular raceway of the rotating groove (42) to convert the friction between the rotating seat (43) and the connecting bolt (41) into rolling friction.

7. A PTC electric heater tube shell transmembrane conveying support plate according to claim 6, characterized in that: The inner wall of the connecting channel (322) is provided with an axially extending guide groove (3221). The top end of the guide groove (3221) is connected to the horizontally arranged fastening groove (3222). The fastening groove (3222) and the guide groove (3221) form a 90° angle.

8. A PTC electric heater tube shell transmembrane conveying support plate according to claim 7, characterized in that: The top surface of the pressing cylinder (3242) is provided with a rotating groove (32421) corresponding to the fastening groove (3222), and the locking rod (44) can slide into and rotate into the fastening groove (3222) via the guide groove (3221).

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