A cell of a brush making device for making at least a part of a toothbrush, having a pin unit having at least one pin, a pin holding sub-unit and a pin guiding sub-unit, the pin having a first section having a first end and a second section having a second end, the first section having a holding structure, and at least one spring section arranged between the first section and the second section, the pin holding sub-unit having a holding structure that is engaged with the holding structure of the pin for fixedly holding the pin, the pin holding sub-unit and the pin guiding sub-unit being arranged for being movable along a first direction towards and away from each other, and the pin guiding sub-unit having a channel for guiding at least a portion of the second section of the pin, the channel being inclined against the first direction.

An undercut processing mechanism includes: a molding core for forming an undercut portion; an inclined pin slidable in a first direction inclined relative to a die opening direction of a molding die during the removal of a molded product from the die; and a guide rail for guiding the movement of the inclined pin. The inclined pin has a slide block movable in contact with the guide rail. The guide rail is so formed as to contact the slide block over the entire stroke of the inclined pin so that the first direction of movement of the inclined pin may be regulated, and is also so formed as to have a shape of a high bending rigidity in a particular direction of the slide block.

Disclosed is an injection molding method for a degradable intravascular stent with a flexible mold core structure. The injection molding method includes the following steps: Step 1, winding a metal rod with a flexible metal film, and applying an inward bending stress to the flexible metal film; Step 2, fixing the flexible metal film to the metal rod, and processing a complementary structure of the degradable intravascular stent on the surface of the flexible metal film; Step 3, performing injection molding processing: Step 4, ending the injection molding, removing the mating body of the flexible metal film and the metal rod and the degradable intravascular stent formed on the surface of the flexible metal film by injection molding, performing cooling, separating the metal rod from the flexible metal film, withdrawing the metal rod, and then removing the flexible metal film to obtain a formed degradable intravascular stent.

There is provided a method for non-penetration joining of members. The method includes: keeping a joining member having a protruding part by a receiving mold so that the protruding part is exposed; placing a joined member over the joining member so that the protruding part of the joining member is positioned in a blind hole of the joined member, and compressing the joined member against the receiving mold to plastically deform the joined member and the joining member at the same time and to wrap excess thickness of the joined member around an undercut part while forming the undercut part on the joining member, thereby non-detachably joining both the members.

Disclosed is an injection molding method for a degradable intravascular stent with a flexible mold core structure. The injection molding method includes the following steps: Step 1, winding a metal rod with a flexible metal film, and applying an inward bending stress to the flexible metal film; Step 2, fixing the flexible metal film to the metal rod, and processing a complementary structure of the degradable intravascular stent on the surface of the flexible metal film; Step 3, performing injection molding processing; Step 4, ending the injection molding, removing the mating body of the flexible metal film and the metal rod and the degradable intravascular stent formed on the surface of the flexible metal film by injection molding, performing cooling, separating the metal rod from the flexible metal film, withdrawing the metal rod, and then removing the flexible metal film to obtain a formed degradable intravascular stent.

A cell of a brush making device for making at least a part of a toothbrush, having a pin unit having at least one pin, a pin holding sub-unit and a pin guiding sub-unit, the pin having a first section having a first end and a second section having a second end, the first section having a holding structure, and at least one spring section arranged between the first section and the second section, the pin holding sub-unit having a holding structure that is engaged with the holding structure of the pin for fixedly holding the pin, the pin holding sub-unit and the pin guiding sub-unit being arranged for being movable along a first direction towards and away from each other, and the pin guiding sub-unit having a channel for guiding at least a portion of the second section of the pin, the channel being inclined against the first direction.

An undercut processing mechanism includes: a molding core for forming an undercut portion; an inclined pin slidable in a first direction inclined relative to a die opening direction of a molding die during the removal of a molded product from the die; and a guide rail for guiding the movement of the inclined pin. The inclined pin has a slide block movable in contact with the guide rail. The guide rail is so formed as to contact the slide block over the entire stroke of the inclined pin so that the first direction of movement of the inclined pin may be regulated, and is also so formed as to have a shape of a high bending rigidity in a particular direction of the slide block.

A device for demolding negatives in thermoplastic injection molds includes an ejector which comprises an ejector profile for the fastening thereof to an ejector plate and a figure insert with a profile that is complementary to a piece to be molded. The ejector further comprises a flexible element arranged between the ejector profile and the figure insert which pushes the figure insert in order to demold the negative by an angular displacement and stretches the figure insert so as to return the ejector to the injection position thereof. The device eliminates the need for molding sliders which are costly as well as the need for a machining process for the installation thereof.

There is provided a method for non-penetration joining of members. The method includes: keeping a joining member having a protruding part by a receiving mold so that the protruding part is exposed; placing a joined member over the joining member so that the protruding part of the joining member is positioned in a blind hole of the joined member, and compressing the joined member against the receiving mold to plastically deform the joined member and the joining member at the same time and to wrap excess thickness of the joined member around an undercut part while forming the undercut part on the joining member, thereby non-detachably joining both the members.

In one or more embodiments, one or more systems, methods, and/or processes may inject material into a mold for a housing of an information handling system through at least one cavity for at least one pivot and through multiple positions adjacent to a clickpad cavity to create a clickpad portion of the housing; may create multiple bridges at multiple positions that bind the clickpad portion of the housing to other portions of the housing; and may remove the multiple bridges to permit the clickpad portion of the housing to rotate about the at least one pivot. For example, the housing of the information handling system, the at least one pivot, and the clickpad holder may be formed of a unitary material. For instance, the unitary material may be or include a polymer.