Pivoting Saddle Stitching Device for Printed Products
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Solution Overview
Problem
Existing thread-stitching devices for folded printed products are bulky, difficult to operate, and have long processing paths, impairing control and accessibility.
Innovation Solution
The saddle is arranged to pivot about a stationary axis on the machine frame, with a loading device featuring either an undershot or overshot conveying path to reduce space requirements and improve accessibility, and a transfer device ensures smooth product handling onto the saddle.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the saddle is arranged to pivot about a stationary axis on the machine frame with a loading device featuring undershot or overshot conveying path, then the device occupies less space and accessibility is improved, but the complexity of the conveying mechanism increases
Solution Approach 1:
The saddle is arranged to pivot about a stationary axis, utilizing rotational motion in a different dimension to achieve product transfer. This allows the conveying path to be compact while maintaining functionality, as the saddle rotates to position products for stitching rather than requiring linear movement through space.
Solution Approach 2:
The saddle is made movable (pivotable) rather than stationary, allowing it to dynamically adjust its position during the stitching cycle. This dynamic arrangement enables the conveying mechanism to occupy less space while maintaining accessibility, as the saddle moves into position only when needed rather than requiring constant spatial clearance.
2Ease of operation
If the conveying path is arranged below the sewing station (undershot), then accessibility is improved and space is reduced, but the handling of printed products becomes more difficult
Solution Approach 1:
The undershot conveying path acts as an intermediary mechanism that facilitates product transfer from the loading device to the saddle. By positioning the conveying path below the sewing station, it provides accessible loading while using the saddle's pivotal motion to elevate and position products for stitching, mediating between the low-positioned conveyor and the high-positioned sewing station.
3Ease of operation
If the conveying path is arranged above the sewing station (overshot), then overview and control are optimized, but the use of vertical space increases
Solution Approach 1:
The overshot conveying path utilizes vertical space to provide an elevated viewpoint for operators, allowing them to overview and control the stitching process more effectively. The conveying path extends above the sewing station, creating an elevated position from which products can be monitored while still being delivered to the saddle for stitching.
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
The device (1) has a sewing station (4) at which print products (2) are sewn at its fold (5), where the print products are joined with each other at a rear side (23) to form a book block (3). The print products are supplied to a saddle (9). A feeding device (14) has a supply end (12) cooperating with a feeder (10) that provides the print products. An output end (13) of the feeding device cooperates with the saddle and supplies the print products to the saddle. The station is arranged between the supply end and the saddle at a machine frame (17), when the station is viewed from above.