A curing fixture for a tubular PTC water heater

Abstract

The utility model discloses a kind of solidification tool for pipeline type PTC water heater, it is related to new energy automobile and energy storage technical field.The tool includes bottom plate, positioning tool, clamping tool, clamping plate and hoop;Positioning tool is fixed to bottom plate, for accurate positioning pipeline;Clamping tool is located in bottom plate and its below connection cylinder, can drive to realize clamping or loosening action.Clamping plate is used to whole piece of fit PTC heating core, hoop is sleeved in clamping plate outer and inner wall is equipped with recess structure to realize quick positioning.When assembling, pipeline and PTC heating core are placed in order after gluing, cover by clamping plate, hoop is sleeved, then clamping tool is driven by cylinder and clamped, tighten hoop can complete solidification.This tool is simple in assembly, recyclable, can realize mass production, ensure that PTC heating core and pipeline are solidified after fit closely, reduce production cost, applicable to battery thermal management system and battery energy storage system in pipeline type PTC water heater production.

Description

Technical Field

[0001] This utility model relates to a curing fixture for a pipeline PTC water heater. Background Technology

[0002] With the rapid development of the new energy vehicle industry, traditional automakers are increasingly investing in this field, intensifying industry competition. This not only places higher demands on overall vehicle quality but also poses stringent challenges to the production capacity and consistency of automotive components. In new energy vehicles, the optimal operating temperature range for batteries is 25-35℃. To cope with extreme weather conditions such as heat and cold, reduce battery damage, and extend their lifespan, battery thermal management systems have become a core component. Simultaneously, due to the imbalance between power generation and consumption in different regions, seasons, and time periods, the market demand for energy storage heaters continues to grow.

[0003] Pipeline PTC water heaters are widely used in the aforementioned battery thermal management systems and energy storage systems due to their high efficiency and strong adaptability. Among them, the split-type PTC structure occupies a certain market share due to its unique high efficiency. However, in the production process of split-type pipeline heaters, fixing the PTC heating core to the pipeline is a core challenge: existing tooling often suffers from complex assembly steps and low positioning accuracy, making it difficult to meet batch production needs; moreover, the poor fit and insufficient flatness between the PTC heating core and the pipeline after curing directly affect the heat transfer efficiency and service life of the heater; in addition, some tooling structures are complex, have high manufacturing costs, and are difficult to reuse, further increasing production costs.

[0004] Therefore, there is an urgent need for a pipeline-type PTC water heater curing fixture that is simple to assemble, can be reused in batches, can ensure a tight fit, and is low in cost, in order to overcome the shortcomings of existing technologies. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of existing split-type pipeline PTC water heater production tooling and to provide a curing tooling for pipeline PTC water heaters. The specific technical solution is as follows:

[0006] A curing fixture for a pipeline PTC water heater includes: a base plate; and a positioning fixture, wherein the positioning fixture is fixedly mounted on the base plate, and the inner wall of the positioning fixture is provided with an arc-shaped groove adapted to the outer wall of the pipeline for fitting and positioning the pipeline.

[0007] A clamping fixture is mounted on the base plate and driven by a cylinder. The cylinder drives the clamping fixture to move closer to or away from the positioning fixture to achieve clamping or releasing actions. An elastic buffer layer is provided on the side of the clamping fixture near the clamping plate. A clamping plate is used to cover the outer wall of the PTC heating core, and the clamping plate can fit the entire PTC heating core. The number of clamping plates matches the number of PTC heating cores. A clamping hoop is used to fit over the clamping plate. The inner wall of the clamping hoop that mates with the clamping plate has a groove structure for positioning the clamping hoop. The clamping hoops are spaced apart along the length of the clamping plate.

[0008] Furthermore, the number of clamps is six, corresponding one-to-one with the number of PTC heating cores to be cured. The core function of this design is to achieve precise coverage of "one core, one clamp," ensuring that each PTC heating core can be completely wrapped and adhered to by a separate clamp, avoiding problems such as incomplete adhesion and uneven local stress that may occur when multiple PTC heating cores share a single clamp.

[0009] Furthermore, the number of clamps is three, and the spacing between adjacent clamps is equal. The arrangement of three clamps can form multiple points of uniform fixation along the length of the clamp, avoiding the problem of localized stress concentration and easy deformation of the clamp when fixed at one or two points. The function of equidistant arrangement of adjacent clamps is to ensure that the fastening force on each section of the clamp is evenly distributed.

[0010] Furthermore, the elastic buffer layer is a silicone layer with a thickness of 1-3mm. Its function is to buffer the clamping fixture as it approaches the clamping plate and applies clamping force, preventing rigid contact between the clamping fixture and the clamping plate from causing deformation of the clamping plate or damage to the surface of the PTC heating core.

[0011] Furthermore, the clamp is provided with bolt connection structure at both ends, and the clamp can be further fixed to the clamp plate by tightening the bolts.

[0012] Furthermore, the base plate is made of a rigid material; a rubber anti-slip pad is attached to the lower surface of the base plate. The rubber anti-slip pad attached to the lower surface of the base plate can effectively increase the friction between the base plate and the workbench surface, prevent the tooling from shifting during assembly operations, further improve the overall stability of the tooling, reduce assembly deviations caused by tooling shifting, and ensure the safety of production operations and the consistency of product assembly.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] I. Simple assembly and high efficiency: The arc-shaped groove of the positioning fixture and the groove structure of the clamp enable the rapid positioning of the pipe and clamp. The assembly steps only require "place the pipe → place the PTC heating core → cover the clamp plate → put on the clamp → clamp and tighten". The operation is convenient and does not require professional and complicated training, which can significantly improve the production efficiency of a single shift.

[0015] 2. Batch reuse and low cost: The overall structure of the tooling is simple, and the core components (base plate, positioning tooling, clamping tooling) can be reused, with no easily damaged consumable parts; the clamping plates and clamps are made of durable materials and have a long service life, which greatly reduces the cost of using the tooling per use and is suitable for batch production scenarios.

[0016] 3. Tight fit and superior product performance: The clamping plate is fully fitted to the PTC heating core, and the stable clamping force of the cylinder and the secondary fixation of the clamp ensure that the PTC heating core and the pipeline are always tightly fitted during the curing process, with no gaps and high flatness, which effectively improves the heat transfer efficiency and service life of the heater.

[0017] IV. High versatility: By replacing positioning fixtures, clamps and clamps of different sizes, it can be adapted to pipes of different diameters and PTC heating cores of different specifications without redesigning the entire set of fixtures, further reducing equipment investment costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall assembly of a high-efficiency curing fixture for a pipeline-type PTC water heater;

[0019] Figure 2 This is the main view of the high-efficiency curing fixture for a pipeline-type PTC water heater;

[0020] Figure 3 This is a schematic diagram of the pipeline structure;

[0021] In the diagram: 1. Base plate, 2. Positioning fixture, 3. Clamping fixture, 4. Clamping plate, 5. Clamping clamp, 6. PTC heating core, 7. Pipeline. Detailed Implementation

[0022] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0023] Example 1: As Figure 1-3 As shown, the curing fixture for a pipeline PTC water heater includes a base plate 1 made of rigid material with a rubber anti-slip pad attached to its lower surface. A positioning fixture 2 and a clamping fixture 3 are fixedly installed on the base plate 1, and the two clamping fixtures 3 are arranged opposite to each other.

[0024] The inner wall of the positioning fixture 2 is provided with an arc-shaped groove that fits the outer wall of the pipe 7, which is used to fit and position the pipe 7. The clamping fixture 3 is driven by a cylinder to achieve clamping and releasing actions that move closer to or away from the positioning fixture 2. The side of the clamping fixture 3 near the clamping plate 4 is provided with an elastic buffer layer made of silicone.

[0025] The tooling also includes clamping plates 4 for covering the outer wall of the PTC heating core 6 and fitting snugly against the entire length of the PTC heating core 6. The number of clamping plates 4 matches the number of PTC heating cores 6, specifically 6 pieces, corresponding one-to-one with the number of PTC heating cores 6 to be cured. It also includes clamps 5 fitted over the clamping plates 4. The inner wall of the clamps 5 has grooves that mate with the clamping plates 4 for self-positioning. These clamps are spaced apart along the length of the clamping plates 4, and both ends of the clamps 5 have bolt connection structures. Tightening the bolts allows for secondary fixation of the clamping plates 4.

[0026] This embodiment provides a curing fixture for a pipeline-type PTC water heater, suitable for curing and fixing a 50mm diameter pipe 7 and six PTC heating elements 6 with specifications of 100mm×30mm×20mm. The specific assembly and usage steps are as follows:

[0027] S1. Tooling preparation: Check the levelness of the base plate 1 to ensure that the relative positions of the positioning tool 2 and the clamping tool 3 are correct; check the air pressure of the cylinder and the integrity of the elastic buffer layer; prepare 6 clamping plates 4 adapted to the PTC heating core 6, 3 clamping hoops 5 with groove structure, and adhesive (high temperature resistant epoxy adhesive).

[0028] S2. Adhesive application and positioning: Apply adhesive evenly (0.5-1mm thick) to the 6 preset slots on the outer wall of the pipe 7 (the slot size is compatible with the PTC heating core 6), and apply adhesive of the same thickness to the mating surface of the PTC heating core 6 at the same time; place the pipe 7 after adhesive application into the arc-shaped groove of the positioning fixture 2, ensuring that the pipe axis coincides with the positioning fixture axis.

[0029] S3. Place the PTC heating cores: Place the 6 PTC heating cores 6 after applying adhesive into the grooves on the outer wall of the pipe 7 one by one, and press lightly to ensure initial adhesion and avoid adhesive layer displacement.

[0030] S4. Install clamps and clamps: Take 6 clamps 4 and cover the outer wall of each PTC heating core 6 respectively, ensuring that the inner wall of the clamp is completely in contact with the outer wall of the PTC heating core; take 3 clamps 5 and fit them at equal intervals (about 150mm) along the length of the clamps 4. The clamps are quickly fixed by using the groove structure of the inner wall of the clamp and the protrusion of the outer wall of the clamp.

[0031] S5. Clamping and Curing: Start the cylinder to drive the clamping fixture 3 to move towards the positioning fixture 2 until the elastic buffer layer of the clamping fixture is in close contact with the clamping plate 4 and maintain the clamping state; use a wrench to tighten the bolts at both ends of the clamping clamp 5, with the torque controlled at 15-20 N·m to ensure that the pressure of the clamping plate on the PTC heating core is uniform; keep the clamping and clamping clamp fixed state and let it stand for 30 minutes (adhesive curing time).

[0032] S6. Removal and Tooling Reuse: After the adhesive has fully cured, close the cylinder and drive the clamping tool 3 to loosen; loosen the bolts of the clamp 5 and remove it (or retain the clamp according to the product design), and remove the cured pipeline PTC water heater from the positioning tool 2; clean the residual adhesive stains on the surface of the tooling, check the condition of each component, and then proceed to the next production cycle.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A curing fixture for a pipeline-type PTC water heater, characterized in that, include: Base plate (1); Positioning fixture (2), the positioning fixture (2) is fixedly installed on the base plate (1), the inner wall of the positioning fixture (2) is provided with an arc groove that is adapted to the outer wall of the pipe (7), for fitting and positioning the pipe (7); A clamping fixture (3) is provided on the base plate (1). The clamping fixture (3) is driven by a cylinder. The cylinder is used to drive the clamping fixture (3) to move closer to or away from the positioning fixture (2) to achieve clamping or releasing action. An elastic buffer layer is provided on the side of the clamping fixture (3) near the clamping plate (4). Clamping plate (4), the clamping plate (4) is used to cover the outer wall of the PTC heating core (6), and the clamping plate (4) can fit the entire PTC heating core (6), the number of clamping plates (4) matches the number of PTC heating cores (6); The clamp (5) is used to be sleeved on the outside of the clamp (4). The inner wall of the clamp (5) that cooperates with the clamp (4) is provided with a groove structure. The groove structure is used for positioning the clamp (5). The clamp (5) is arranged at intervals along the length direction of the clamp (4).

2. The curing fixture for a pipeline PTC water heater according to claim 1, characterized in that, The number of clamps (4) is 6, which corresponds one-to-one with the number of PTC heating cores (6) to be cured.

3. The curing fixture for a pipeline PTC water heater according to claim 1, characterized in that, The number of clamps (5) is 3, and the spacing between adjacent clamps (5) is equal.

4. A curing fixture for a pipeline-type PTC water heater according to claim 1, characterized in that, The elastic buffer layer is a silicone layer with a thickness of 1-3mm.

5. A curing fixture for a pipeline-type PTC water heater according to claim 1, characterized in that, The clamp (5) has bolt connection structures at both ends, and the clamp (5) can be used to fix the clamp (4) for a second time by tightening the bolts.

6. A curing fixture for a pipeline PTC water heater according to claim 1, characterized in that, The base plate (1) is made of rigid material; a rubber anti-slip pad is attached to the lower surface of the base plate (1).

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