Abstract

Provided is a primer for metal surfaces and the preparation method thereof. The primer comprises 50-80 wt % of organic solvent (A), 2-15 wt % of phenolic resin (B), 1-10 wt % of rubber elastomer (C), 1-10 wt % of silane coupling agent (D), 5-25 wt % of metal oxide powder (E), and 1-10 wt % of inorganic filler (F); wherein the organic solvent (A) is an organic solvent capable of dissolving the phenolic resin (B) and the rubber elastomer (C), and the inorganic filler (F) is different from the metal oxide powder (E). The primer can facilitate the bonding of metal and rubber, and has high adhesion strength.

IPC Classes  ?

• C08K 5/00 - Use of organic ingredients
• C09D 5/00 - Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects producedFilling pastes
• C09D 161/06 - Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
• C09D 7/00 - Features of coating compositions, not provided for in group Processes for incorporating ingredients in coating compositions
• C09D 7/12 - Other additives
• C09D 161/14 - Modified phenol-aldehyde condensates
• C08K 3/22 - OxidesHydroxides of metals

Abstract

Provided is a primer for metal surfaces and the preparation method thereof. The primer comprises 50-80 wt% of organic solvent (A), 2-15 wt% of phenolic resin (B), 1-10 wt% of rubber elastomer (C), 1-10 wt% of silane coupling agent (D), 5-25 wt% of metal oxide powder (E), and 1-10 wt% of inorganic filler (F); wherein the organic solvent (A) is an organic solvent capable of dissolving the phenolic resin (B) and the rubber elastomer (C), and the inorganic filler (F) is different from the metal oxide powder (E). The primer can facilitate the bonding of metal and rubber, and has high adhesion strength.

IPC Classes  ?

• C09D 161/06 - Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols

Abstract

A fastener for connecting conveyer belt includes an upper board (21) and a lower board (22) both provided with upper and lower connection holes (212, 222) and pointed teeth (211, 221) on edges of each board. A bolt (23) with head (231) and rod (233) passes via said connection holes (212, 222) to connect the upper board (21) with the lower board (22). The upper connection hole (212) is rectangular, and a rectangular step (232) is mounted between the head (231) and the rod (233) to cooperate with the upper connection hole (212).

IPC Classes  ?

• F16G 3/12 - Joining belts by lacing

Abstract

A moving-positioning means of belt-fastening apparatus including a head and an anvil plate on which a row of fastener holes disposed, a row of positioning grooves are disposed in one side of the anvil plate; said positioning grooves are parallel to said fastener holes and the spaces of the positioning grooves are identical to those of said fastener holes; and a positioning strip disposed on the head is compatible with said positioning grooves. Since the positioning grooves and the fastener holes are separately disposed on the anvil plate, the positioning strip may be inserted into the positioning grooves to be located when the head moves. Therefore the fastener holes are no longer used for the location, and the movement of the head is not restricted to the fastener holes, which means the head may move in the whole area of the frame no matter whether the fasteners are inserted into the fastener holes or not. Thus the belt-fastening apparatus may bind the fasteners in a jumping manner when operating, easily and conveniently, and the binding quality is guaranteed.

IPC Classes  ?

• B23P 11/00 - Connecting or disconnecting metal parts or objects by metal-working techniques, not otherwise provided for
• B23D 1/00 - Planing or slotting machines cutting by relative movement of the tool and workpiece in a horizontal straight line only
• B21D 53/50 - Making other particular articles haberdashery, e.g. buckles, combsMaking other particular articles pronged fasteners, e.g. staples metal slide-fastener parts
• B21F 45/18 - Wire-working in the manufacture of other particular articles of devices for fastening or securing purposes of slide fastener elements
• B29D 5/00 - Producing elements of slide fastenersCombined making and attaching of elements of slide fasteners
• B25C 7/00 - Accessories for nailing or stapling tools, e.g. supports

Abstract

A manual step-type buckle-binding machine includes a buckle-charging plate (1) fixed on a shelf and a machine head moving along the buckle-charging plate. The machine head comprises a left handle, a right handle, a casing (4), a buckle-pressing head (3), a locating head (9), a nail-through head (19) and a shifting mechanism. The left handle is connected with the locating head (9) via a connecting-rod sliding-block mechanism, and the left handle is also connected with the buckle-pressing head (3) via a connecting-rod mechanism. The right handle is connected with the nail-through head (19) via another connecting-rod sliding-block mechanism. A row of buckle-charging holes (101) and a row of locating holes (102) are arranged on the buckle-charging plate (1). The machine improves the locating way of the machine head by separating the buckle-charging holes from the locating holes, ensures the buckle-binding quality and is convenient to use.

IPC Classes  ?

• F16G 3/16 - Devices or machines for connecting driving-belts or the like

Abstract

A moving-positioning means of belt-fastening apparatus comprises a head (2) and an anvil plate (1), said plate (1) is provided with a row of fastener holes (11) in the center, one side of the anvil plate (1) is provided with a row of positioning grooves, said grooves are parallel to the fastener holes (11), the space between two adjacent positioning grooves is the same as the space between two adjacent fastener holes (11), and the head (2) has a positioning strip (22) which can engage with the positioning grooves. The belt-fastening apparatus can move jumpily, be simply operated and ensure good fastening.

IPC Classes  ?

• F16G 3/16 - Devices or machines for connecting driving-belts or the like