Method for manufacturing a hand tool handle, and a hand tool handle
The present invention relates to a method for manufacturing a handle for a hand tool, the handle comprising a body portion and a gripping part that is provided at least partly on the body portion and intended for the user to grip when using the hand tool. In the method of the invention there is first fabricated the gripping part and it is set in a mould cavity, whereafter melt mass is cast into the mould cavity to provide the body portion such that the melt mass flows underneath the gripping part, whereby the gripping part is pressed against the wall of the mould cavity.
1. A method for manufacturing a handle for a hand tool, the handle comprising a body portion and one or more surface portions provided at least partly on the body portion, the method comprising:
fabricating a tubular surface portion of the one or more surface portions and setting it in a mold cavity of a mold against a cavity wall;
setting a core into the mold cavity and the tubular surface portion, and
casting melt mass into the mold cavity for providing the body portion that constitutes a shaft of an axe, a spade, a pair of secateurs or a rake such that the melt mass flows into the tubular surface portion into a space between the tubular surface portion and the core and the tubular surface portion is pressed against a wall of the mold cavity to obtain a shaft where said tubular surface portion covers at least a part of the body portion to define a gripping part, and
drawing out the core from the body portion to form an at least partly hollow body portion to define said shaft.
2. The method of claim 1 , wherein the surface portion is smaller and lighter than the body portion.
3. The method of claim 1 , wherein the surface portion is a gripping part that is intended for a user to grip when the hand tool is in use.
4. The method of claim 1 , wherein the surface portion is set into the mold cavity such that it is unable to move during said casting.
5. The method of claim 4 , wherein the surface portion is set at an end of the mold cavity, in a recess provided in the mold cavity for the surface portion, or against a counterpart surface provided in the mold cavity.
6. The method of claim 1 , wherein the surface portion is at least partly a sleeve-like part that is made to surround at least partly the body portion in a finished product.
7. The method of claim 1 , wherein the surface portion is fabricated by injection molding in a separate surface portion mold.
8. The method of claim 1 , wherein the surface portion is provided of a softer material than the body portion.
9. The method of claim 1 , wherein the core is set in the mold cavity such that during said casting the melt mass flows between a gripping part and the core.
10. The method of claim 1 , wherein the body portion is provided during said casting by injection molding.
11. A handle for a hand tool, the handle comprising a body portion and one or more surface portions provided at least partly on the body portion, wherein the handle is manufactured by the method of claim 1 .
12. The handle of claim 11 , wherein the surface portion is smaller and lighter than the body portion.
13. The handle of claim 11 , wherein the surface portion is a gripping part that is intended for a user to grip when the hand tool is in use.
14. The handle of claim 11 , wherein the surface portion is at least partly a sleeve-like part, a planar part or a surface layer.
15. The handle of claim 11 , wherein the surface portion is provided of material that is softer than the body portion.