Voltage resistance testing device for PTC (Positive Temperature Coefficient) heater

Abstract

The utility model discloses a PTC heater withstand voltage testing device, particularly relates to the technical field of PTC heater testing, and provides the following scheme aiming at the problem that an existing device needs to be conveniently matched with a conveying belt to carry out automatic conveying detection: the PTC heater withstand voltage testing device comprises a placing plate, an electric telescopic rod and a fixed block, the electric telescopic rod is arranged at the center of the top of the placing plate, and the fixed block is arranged on the electric telescopic rod; fixing blocks are attached to the two side edges of the placement plate, extrusion plates are arranged on the sides, close to the top of the placement plate, of the fixing blocks, detection modules are arranged on the two sides of one end of the placement plate, a lead screw is arranged at the center of the bottom of the placement plate, and cooling fins are attached to the two sides of the bottom of the placement plate; a conveying belt is arranged at the end, away from the detection module, of the containing plate for supporting, and a center groove is formed in the center of the interior of the containing plate. The device has the advantages of being capable of automatically pushing a workpiece for monitoring, automatically clamping and guiding, and pushing the workpiece to exit after monitoring is completed.

Description

Technical Field

[0001] The utility model relates to the technical field of PTC heater testing, in particular to a PTC heater withstand voltage testing device. Background Art

[0002] PTC heater, also called PTC heating element, is composed of PTC ceramic heating element and aluminum tube. This type of PTC heater has the advantages of low thermal resistance and high heat exchange efficiency. It is an automatic constant temperature and power-saving electric heater. The outstanding feature is safety performance. It will not cause scalding, fire and other safety hazards in any application. It is composed of galvanized outer pressure plate, stainless steel corrugated spring sheet, galvanized inner pressure plate, single-layer aluminum heat sink, ptc heating sheet, double-layer aluminum heat sink and other materials. When processing and producing heaters, they need to be tested to check the voltage resistance of the detector and whether it can meet the needs.

[0003] However, in actual use, since the production line usually transports the workpieces via conveyor belts, when manual connection inspection is performed, the workpiece needs to be taken down from the conveyor belt for inspection and then manually put back after the inspection is completed, resulting in low efficiency. Therefore, a device is needed that can conveniently cooperate with the production line for transportation and inspection. Utility Model Content

[0004] The utility model aims to provide a PTC heater withstand voltage testing device, which solves the existing problem of being able to conveniently cooperate with a conveyor belt to perform automatic conveying testing.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a PTC heater withstand voltage test device, comprising a placement plate, an electric telescopic rod and a fixed block, wherein the electric telescopic rod is arranged at the top center of the placement plate, the two sides of the placement plate are fitted with fixed blocks, an extrusion plate is arranged on one side of the fixed block close to the top of the placement plate, detection modules are arranged on both sides of one end of the placement plate, a screw rod is arranged at the bottom center of the placement plate, and heat sinks are fitted on both sides of the bottom of the placement plate;

[0006] A conveyor belt is provided at one end of the placement plate for support away from the detection module, a central groove is opened at the inner center of the placement plate, the outer wall of the screw rod is rotatably connected to the moving block, and the moving block is slidably connected to the inner part of the central groove;

[0007] The end of the electric telescopic rod used for pushing away from the detection module is connected to a moving plate, and the bottom end of the moving plate and the top of the conveyor belt are close to each other;

[0008] A surrounding belt is arranged around the bottom of the extrusion plate used for extrusion, and rotating rollers are rotatably connected to both ends of the inner part of the surrounding belt.

[0009] Preferably, grooves corresponding to the rotating rollers are provided at the bottoms of both ends of the extrusion plate, and the tops of the rotating rollers and the tops of the grooves of the extrusion plate are rotatably connected to each other, and the surrounding belt and the outer wall of the extrusion plate are fitted and slid against each other;

[0010] Inclined plates are arranged on both sides of one end of the top of the placement plate away from the detection module, and the ends of the two inclined plates away from the detection module are inclined toward the sides away from each other.

[0011] Preferably, the fixing block is fixed to the side wall of the placement plate, and electric push rods are fixed to the top of the fixing block near both ends, and the inner protruding end of the electric push rod is fixedly connected to the top side wall of the extrusion plate.

[0012] Preferably, a fixing frame is provided on one end of the outer wall of the electric telescopic rod close to the fixed block, the bottom of both ends of the fixing frame are fixedly connected to one side of the top of the fixed block, and the outer wall of one end of the electric telescopic rod away from the extrusion plate is fixed to one end of the placement plate through the mounting plate.

[0013] Preferably, the heat sink and the bottom of the placement plate are fixed to each other, and heat dissipation fans are provided at both ends of the bottom of the heat sink, and air holes are provided inside the placement plate.

[0014] Preferably, the screw rod rotates with the moving block via the thread of the outer wall, a driving motor is provided at one end of the screw rod close to the detection module, and a power output end of the driving motor is fixed to the screw rod.

[0015] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0016] When the workpiece is moved, the movable plate is moved to the center of the placing plate, and the movable plate is pushed to the side of the placing plate by the inclined inclined plates on both sides of the top of the placing plate. At the same time, the electric push rod can be started, so that the electric push rod drives the extrusion plate to move toward the center, so that the surrounding belt is driven, and the surrounding belt and the two sides of the workpiece are pressed together and squeezed. When the workpiece moves, the surrounding belt can be driven to move with it to avoid the situation that the extrusion cannot be pushed. At the same time, when one end of the workpiece is pressed together with the detection module, the voltage is detected. At the same time, when the detection is completed and it needs to be moved out, the driving motor can be started, and then the screw rod is rotated to drive the moving block to slide in the center groove position of the placing plate, and then the workpiece can be effectively driven to move in the opposite direction through the push of the moving block, and the surrounding belt can also be rotated in the opposite direction, so that the workpiece is pushed back to the surface of the conveyor belt for the next step of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the utility model;

[0019] Figure 2 It is a side view of the utility model;

[0020] Figure 3 It is a top view of the utility model;

[0021] Figure 4 This is a schematic diagram of the bottom structure of the utility model;

[0022] Figure 5 It is a schematic structural diagram of the connection between the placement plate and the push rod of the utility model.

[0023] Description of reference numerals:

[0024] 1. Placement plate; 101. Center groove; 102. Conveyor belt; 2. Electric telescopic rod; 201. Moving plate; 202. Fixed frame; 3. Fixed block; 301. Electric push rod; 4. Extrusion plate; 401. Surrounding belt; 402. Rotating roller; 403. Inclined plate; 5. Detection module; 501. Mounting plate; 6. Screw; 601. Moving block; 602. Driving motor; 7. Heat sink; 701. Cooling fan. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0026] The utility model provides Figure 1-5 The PTC heater withstand voltage testing device shown includes a placement plate 1, an electric telescopic rod 2 and a fixed block 3. The electric telescopic rod 2 is arranged at the top center of the placement plate 1, and the fixed blocks 3 are fitted on both sides of the placement plate 1. An extrusion plate 4 is arranged on one side of the fixed block 3 close to the top of the placement plate 1, and detection modules 5 are arranged on both sides of one end of the placement plate 1. A screw rod 6 is arranged at the bottom center of the placement plate 1, and heat sinks 7 are fitted on both sides of the bottom of the placement plate 1.

[0027] like Figure 1-5As shown, a conveyor belt 102 is provided at one end of a placement plate 1 for support away from the detection module 5, a center groove 101 is opened at the inner center of the placement plate 1, the outer wall of the screw rod 6 is rotatably connected to a moving block 601, and the moving block 601 is slidably connected to the inside of the center groove 101; an electric telescopic rod 2 for pushing is connected to a moving plate 201 at one end away from the detection module 5, and the bottom end of the moving plate 201 is close to the top of the conveyor belt 102; a surrounding belt 401 is arranged around the bottom of the extrusion plate 4 for extrusion, and both ends of the inner part of the surrounding belt 401 are rotatably connected to rotating rollers 402.

[0028] like Figure 1 , Figure 4 As shown, grooves corresponding to the rotating rollers 402 are provided at the bottom of both ends of the extrusion plate 4, and the top of the rotating roller 402 is rotatably connected to the top of the groove of the extrusion plate 4, and the surrounding belt 401 and the outer wall of the extrusion plate 4 slide in contact with each other; inclined plates 403 are provided on both sides of the end of the top of the placement plate 1 away from the detection module 5, and the ends of the two inclined plates 403 away from the detection module 5 are inclined toward the side away from each other, the fixed block 3 is fixed to the side wall of the placement plate 1, and the top of the fixed block 3 near both ends is fixed with electric push rods 3 01, the inner protruding end of the electric push rod 301 is fixedly connected to the top side wall of the extrusion plate 4. Since inclined inclined plates 403 are provided on both sides of the top of the placement plate 1, the moving plate 201 can push the workpiece to move toward the center of the placement plate 1 under the guidance of the inclined plate 403. At the same time, the electric push rod 301 can be started, so that the electric push rod 301 drives the extrusion plate 4 to move toward the center, so that the surrounding belt 401 is driven, and the surrounding belt 401 can be pressed against the two sides of the workpiece.

[0029] like Figure 1 , Figure 2 As shown, a fixing frame 202 is provided at one end of the outer wall of the electric telescopic rod 2 close to the fixed block 3, and the bottoms of both ends of the fixing frame 202 are fixedly connected to one side of the top of the fixed block 3, and the outer wall of the end of the electric telescopic rod 2 away from the extrusion plate 4 is fixed to one end of the placement plate 1 through the mounting plate 501. When the electric telescopic rod 2 is started to contract, the movable plate 201 is driven to move, and then the movable plate 201 pushes the workpiece to move to one side of the placement plate 1.

[0030] like Figure 4 As shown, the heat sink 7 and the bottom of the placement plate 1 are fixed to each other, and heat dissipation fans 701 are provided at both ends of the bottom of the heat sink 7, and ventilation holes are opened inside the placement plate 1.

[0031] like Figure 4 , Figure 5As shown, the screw rod 6 rotates with the moving block 601 through the thread of the outer wall, and a driving motor 602 is provided at one end of the screw rod 6 close to the detection module 5. The power output end of the driving motor 602 is fixed to the screw rod 6. The driving motor 602 is started, and then the screw rod 6 rotates to drive the moving block 601 to slide in the central groove 101 of the placement plate 1, and then the push of the moving block 601 can effectively drive the workpiece to move in the reverse direction, and at the same time, it can also make the surrounding belt 401 rotate in the reverse direction, so that the workpiece is pushed back to the surface of the conveyor belt 102.

[0032] Working principle: When in use, the power receiving end of the PTC heater can be directed toward the side of the detection module 5, and then the workpiece can be placed on the surface of the conveyor belt 102. The workpiece can be conveniently transported to the side close to the movable plate 201 through the transportation of the conveyor belt 102, and then the electric telescopic rod 2 is started to contract, which drives the movable plate 201 to move, and then the movable plate 201 pushes the workpiece to move to one side of the placement plate 1. At the same time, since inclined inclined plates 403 are provided on both sides of the top of the placement plate 1, the movable plate 201 can push the workpiece to move. Under the guidance of the inclined plate 403, it can move to the center of the placement plate 1, and at the same time, the electric push rod 301 can be started, so that the electric push rod 301 drives the extrusion plate 4 to move toward the center. The surrounding belt 401 is driven so that the surrounding belt 401 and the two sides of the workpiece can fit and squeeze each other, and then when the workpiece moves, it can drive the surrounding belt 401 to move with it, so as to avoid the situation that the workpiece is squeezed and cannot be pushed. At the same time, when one end of the workpiece fits with the detection module 5, the voltage detection is realized. At the same time, when it needs to be moved out after the detection is completed, the driving motor 602 can be started, and then the screw rod 6 rotates to drive the moving block 601 to slide in the central groove 101 position of the placement plate 1, and then the push of the moving block 601 can effectively drive the workpiece to move in the opposite direction, and at the same time, the surrounding belt 401 can also rotate in the opposite direction, so that the workpiece is pushed back to the surface of the conveyor belt 102, which is convenient for the next step of operation without manual operation.

[0033] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A PTC heater withstand voltage test device, comprising a placement plate (1), an electric telescopic rod (2) and a fixing block (3), characterized in that: An electric telescopic rod (2) is arranged at the center of the top of the placement plate (1); fixed blocks (3) are fitted on both sides of the placement plate (1); a pressing plate (4) is arranged on one side of the fixed block (3) close to the top of the placement plate (1); detection modules (5) are arranged on both sides of one end of the placement plate (1); a screw rod (6) is arranged at the center of the bottom of the placement plate (1); and heat sinks (7) are fitted on both sides of the bottom of the placement plate (1); A conveyor belt (102) is provided at one end of the placement plate (1) for support away from the detection module (5); a central groove (101) is provided at the inner center of the placement plate (1); the outer wall of the screw rod (6) is rotatably connected to the moving block (601), and the moving block (601) is slidably connected to the inner part of the central groove (101); The end of the electric telescopic rod (2) used for pushing away from the detection module (5) is connected to a moving plate (201), and the bottom end of the moving plate (201) and the top of the conveyor belt (102) are close to each other; The bottom of the extrusion plate (4) used for extrusion is surrounded by a surrounding belt (401), and both ends of the inner part of the surrounding belt (401) are rotatably connected to rotating rollers (402).

2. The PTC heater withstand voltage test device according to claim 1, characterized in that: The bottoms of both ends of the extrusion plate (4) are provided with grooves corresponding to the rotating rollers (402), and the tops of the rotating rollers (402) and the tops of the grooves of the extrusion plate (4) are rotatably connected to each other, and the surrounding belt (401) and the outer wall of the extrusion plate (4) are fitted and slid against each other; Inclined plates (403) are provided on both sides of the end of the top of the placement plate (1) away from the detection module (5), and the ends of the two inclined plates (403) away from the detection module (5) are inclined towards the sides away from each other.

3. The PTC heater withstand voltage test device according to claim 1, characterized in that: The fixing block (3) is fixed to the side wall of the placement plate (1), and electric push rods (301) are fixed to the top of the fixing block (3) near both ends, and the inner protruding end of the electric push rod (301) is fixedly connected to the top side wall of the extrusion plate (4).

4. The PTC heater withstand voltage test device according to claim 1, characterized in that: A fixing frame (202) is provided at one end of the outer wall of the electric telescopic rod (2) close to the fixing block (3); the bottoms of both ends of the fixing frame (202) are fixedly connected to one side of the top of the fixing block (3); and the outer wall of one end of the electric telescopic rod (2) away from the extrusion plate (4) is fixed to one end of the placement plate (1) via a mounting plate (501).

5. The PTC heater withstand voltage test device according to claim 1, characterized in that: The heat sink (7) and the bottom of the placement plate (1) are fixed to each other, and heat dissipation fans (701) are provided at both ends of the bottom of the heat sink (7), and ventilation holes are provided inside the placement plate (1).

6. The PTC heater withstand voltage test device according to claim 1, characterized in that: The screw rod (6) rotates with the moving block (601) via the threads of the outer wall. A driving motor (602) is provided at one end of the screw rod (6) close to the detection module (5). The power output end of the driving motor (602) is fixed to the screw rod (6).

Images