Taxonomy Recursive

while.php

<?php
	$namelinea = $_POST['termname']; 

		$args = array(
			'post_type'			=> 'productos',
			'posts_per_page'	=> 3,
	        'taxonomy' => 'linea-maquinaria',
	        'term' => $namelinea,  //slug de terminos                                
	        'nopaging' => true, // to show all posts in this taxonomy, could also use 'numberposts' => -1 instead

		);
		$args = new WP_Query($args);
		while($args->have_posts()): $args->the_post();

      		$images = [];
			if( have_rows('galeria_de_imagenes') ):
				while( have_rows('galeria_de_imagenes') ): the_row();
					$images[] = get_sub_field('imagen_producto');
				endwhile;
			endif;						        					

		    $post_data[] = array(
		        'titulo' => get_the_title(),
		        'imagen' => $images

		    );	
			$images = null;


		endwhile; wp_reset_postdata();
		echo json_encode( $post_data );