CN202922998U - Piano hammer head forming oil press - Google Patents

Piano hammer head forming oil press Download PDF

Info

Publication number
CN202922998U
CN202922998U CN 201220593596 CN201220593596U CN202922998U CN 202922998 U CN202922998 U CN 202922998U CN 201220593596 CN201220593596 CN 201220593596 CN 201220593596 U CN201220593596 U CN 201220593596U CN 202922998 U CN202922998 U CN 202922998U
Authority
CN
China
Prior art keywords
hammerhead
oil cylinder
pitch
pressing oil
bass
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220593596
Other languages
Chinese (zh)
Inventor
郭学成
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BEIJING DONGQI ZHONGKE TECHNOLOGY Co Ltd
Original Assignee
BEIJING DONGQI ZHONGKE TECHNOLOGY Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BEIJING DONGQI ZHONGKE TECHNOLOGY Co Ltd filed Critical BEIJING DONGQI ZHONGKE TECHNOLOGY Co Ltd
Priority to CN 201220593596 priority Critical patent/CN202922998U/en
Application granted granted Critical
Publication of CN202922998U publication Critical patent/CN202922998U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

A piano hammer head forming oil press comprises a lower stamping mechanism, a side stamping mechanism, a bottom die and an operation control dial, wherein the lower stamping mechanism comprises a pitch end down-pressing oil cylinder and a low pitched end down-pressing oil cylinder, the lower ends of the two down-pressing oil cylinders are connected with the two ends of a wooden core press plate through connecting earrings, the lower end of the wooden core press plate is connected with a wooden core clamp, and the wooden core clamp clamps a hammer head wooden core; the bottom die is arranged right below the lower stamping mechanism, the bottom die is fixed through the fixing plate of the bottom die, a hammer head is placed inside the groove of the bottom die in a felted manner; the side stamping mechanism comprises two side dies which are arranged on the two sides of the bottom die in a bilaterally symmetric manner, the two side dies are respectively fixed through fixing plates of the side dies, the two ends of the two fixing plates of the side dies are respectively connected with a pitch end side pressing oil cylinder and a low pitched end side pressing oil cylinder through the connecting earrings; all the oil cylinders are all connected with a pressure sensor, and the pressure sensor is connected with the operation control dial. The piano hammer head forming oil press provided by the utility model has a simple structure, is convenient to use, and can achieve accuracy control to the hardness of the felt striking point of the hammer head.

Description

Piano hammerhead shaping hydraulic press
Technical field
The utility model relates to a kind of piano hammerhead shaping hydraulic press.
Background technology
Hammerhead is the vitals in piano construction, and hammerhead is wrapped up in the hammerhead felt outward by the hammerhead reel and made.The technical process that hammerhead is made is more numerous and diverse, and a lot of operations belong to wood processing, as the making of reel, are secondly the processing of felt, as felt blanking finishing etc., wherein the most important thing is the pressure viscosity technique of hammerhead felt and reel.In the pressure viscosity process, the control of hammerhead felt hardness is directly to affect the flexible key factor of hammerhead.
It is piano manufacturer's pursuit that every piano of same brand and model keeps unified better tone color, this wherein the hammerhead steady quality be one of important factor, core is the stress distribution of hardness after forming felt.The hammerhead traditional diamond-making technique is artificial screw pressurizing or hydraulic press pressurization, arriving the compression forming size gets final product, consider factors such as being vulnerable to felt soft or hard, the appearance and size girth of a garment, die size deviation, the hammerhead of producing by production standard is generally partially hard, and then process one by one, simple way is that acupuncture treatment is loosened or steams pine.
At present, in the actual process process that hammerhead is made, generally lay particular emphasis on the geometry of hammerhead, adopt traditional hydraulic press to make when hammerhead is formed pressure viscosity, in the situation that guarantee that the physical dimension of hammerhead requires, the hardness scattered error of made hammerhead felt is larger, often needs post processing to use.Yet the more difficult control of hammerhead felt soft durometer through post processing, it is unified that the soft durometer of hammerhead felt also can make because of the impact of felt quality and Changes in weather standard be difficult to, finally make every piano of same brand and model keep unified tone color to become technical barrier one, whole scale section to do a lot of work.
The utility model content
The purpose of this utility model is to provide a kind of piano hammerhead shaping hydraulic press, controls by the pressure in hammerhead reel and hammerhead felt pressure viscosity process to make the striking point of the high and low sound hammerhead of hammerhead felt have hardness number accurately.
For achieving the above object, the utility model is by the following technical solutions:
A kind of piano hammerhead shaping hydraulic press comprises that dip mold mechanism, side pressure mold mechanism, bed die and operation control dial plate; Wherein,
Described dip mold mechanism comprises bass end down pressing oil cylinder and high pitch end down pressing oil cylinder, and the lower end of these two down pressing oil cylinder connects the two ends of reel pressing plate by connecting lug, and the lower end of reel pressing plate connects reel fixture, this reel fixture clamping hammerhead reel; Under this dip mold mechanism, bed die is set, this bed die is fixed by the bed die fixed head, and the hammerhead felt is placed in the groove of this bed die;
Described side pressure mold mechanism comprises two side forms, these two side forms are symmetrical set the both sides at bed die, these two side forms are fixed by the side form fixed head respectively, and the two ends of these two side form fixed heads connect the distolateral compressing cylinder of high pitch and the distolateral compressing cylinder of bass by connecting lug respectively;
Described high pitch end down pressing oil cylinder, bass end down pressing oil cylinder, the distolateral compressing cylinder of high pitch, the distolateral compressing cylinder of bass are connected with pressure sensor respectively, and this pressure sensor is controlled dial plate with operation and is connected.
Described high pitch end down pressing oil cylinder, bass end down pressing oil cylinder, the distolateral compressing cylinder of high pitch, the distolateral compressing cylinder of bass and operation are controlled between dial plate and are connected with respectively hydraulic control one-way valve, solenoid directional control valve and electromagnetic speed-adjusting valve.
The utility model has the advantage of:
The hydraulic press that the utility model is relatively traditional, more lay particular emphasis on piano to the requirement of hammerhead striking point hardness, different according to hammerhead high pitch end and bass end to hammerhead felt hardness requirement, by the accurate control to high pitch end and bass end hammerhead felt pressure, make the hammerhead felt striking point after pressure viscosity reach best hardness number.
The utility model hydraulic press is simple in structure, easy to use, can realize the accurate control to hammerhead felt striking point hardness.
Description of drawings
Fig. 1 is the front view of the utility model structure.
The specific embodiment
As shown in Figure 1, the utility model comprises that dip mold mechanism 1, side pressure mold mechanism 2, bed die 3 and operation control dial plate 4; Wherein,
Described dip mold mechanism 1 comprises bass end down pressing oil cylinder 5 and high pitch end down pressing oil cylinder (not shown), the lower end of these two down pressing oil cylinder connects the two ends of reel pressing plate 7 by connecting lug 6, the lower end of reel pressing plate 7 connects reel fixture 8, these reel fixture 8 clamping hammerhead reels 9; Under this dip mold mechanism, bed die 3 is set, this bed die 3 is fixing by bed die fixed head 10, and hammerhead felt bed die 11 is placed in this groove;
Described side pressure mold mechanism 2 comprises two side forms 12, these two side forms 12 are symmetrical set the both sides at bed die 3, these two side forms 12 are fixing by side form fixed head 13 respectively, and the two ends of these two side form fixed heads connect the distolateral compressing cylinder 15 of bass and the distolateral compressing cylinder (not shown) of high pitch by connecting lug 14 respectively;
Described high pitch end down pressing oil cylinder, bass end down pressing oil cylinder, the distolateral compressing cylinder of high pitch, the distolateral compressing cylinder of bass are connected with pressure sensor 16 respectively, and this pressure sensor 16 is controlled dial plate 4 with operation and is connected.
Described high pitch end down pressing oil cylinder, bass end down pressing oil cylinder, the distolateral compressing cylinder of high pitch, the distolateral compressing cylinder of bass and operation are controlled between dial plate and are connected with respectively hydraulic control one-way valve 17, solenoid directional control valve 18 and electromagnetic speed-adjusting valve 19.
Adopt the utility model that hammerhead reel and hammerhead felt are carried out in the pressure viscosity process, at first felt is inserted on the groove of bed die (interior), the hammerhead reel is arranged on the reel fixture, start simultaneously high pitch end down pressing oil cylinder and bass end down pressing oil cylinder, advance the hammerhead reel to move downward, press the felt medium position, felt sinks, by oil pressure determination of pressure sensor downforce, indirectly control the pressure of hammerhead felt striking point position and be presented at operation and control on dial plate, after the hammerhead felt of high pitch end and bass end reaches predetermined pressure respectively, stop advancing; Start simultaneously the side pressure oil cylinder that is positioned at the bed die both sides, comprise the distolateral compressing cylinder of high pitch and the distolateral compressing cylinder of bass, advance side form, the pressure of the hammerhead reel both sides felt by determination of pressure sensor is presented at operation and controls on dial plate, after reaching predetermined pressure, stop the propelling of side form; The pressurize certain hour, make the hammerhead felt securely pressure viscosity around the hammerhead reel.
Piano hammerhead shaping hydraulic press of the present utility model can be according to hammerhead high pitch end and bass end different to hammerhead felt hardness requirement, by the accurate control to high pitch end and bass end hammerhead felt pressure, make the hammerhead felt striking point after pressure viscosity reach best hardness number.

Claims (2)

1. piano hammerhead shaping hydraulic press is characterized in that: comprise that dip mold mechanism, side pressure mold mechanism, bed die and operation control dial plate; Wherein,
Described dip mold mechanism comprises bass end down pressing oil cylinder and high pitch end down pressing oil cylinder, and the lower end of these two down pressing oil cylinder connects the two ends of reel pressing plate by connecting lug, and the lower end of reel pressing plate connects reel fixture, this reel fixture clamping hammerhead reel; Under this dip mold mechanism, bed die is set, this bed die is fixed by the bed die fixed head, and the hammerhead felt is placed in the groove of this bed die;
Described side pressure mold mechanism comprises two side forms, these two side forms are symmetrical set the both sides at bed die, these two side forms are fixed by the side form fixed head respectively, and the two ends of these two side form fixed heads connect the distolateral compressing cylinder of high pitch and the distolateral compressing cylinder of bass by connecting lug respectively;
Described high pitch end down pressing oil cylinder, bass end down pressing oil cylinder, the distolateral compressing cylinder of high pitch, the distolateral compressing cylinder of bass are connected with pressure sensor respectively, and this pressure sensor is controlled dial plate with operation and is connected.
2. piano hammerhead shaping hydraulic press according to claim 1, is characterized in that: be connected with respectively hydraulic control one-way valve, solenoid directional control valve and electromagnetic speed-adjusting valve between described high pitch end down pressing oil cylinder, bass end down pressing oil cylinder, the distolateral compressing cylinder of high pitch, the distolateral compressing cylinder of bass and operation control dial plate.
CN 201220593596 2012-11-12 2012-11-12 Piano hammer head forming oil press Expired - Fee Related CN202922998U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220593596 CN202922998U (en) 2012-11-12 2012-11-12 Piano hammer head forming oil press

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220593596 CN202922998U (en) 2012-11-12 2012-11-12 Piano hammer head forming oil press

Publications (1)

Publication Number Publication Date
CN202922998U true CN202922998U (en) 2013-05-08

Family

ID=48212992

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201220593596 Expired - Fee Related CN202922998U (en) 2012-11-12 2012-11-12 Piano hammer head forming oil press

Country Status (1)

Country Link
CN (1) CN202922998U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104527109A (en) * 2015-01-05 2015-04-22 广州珠江钢琴集团股份有限公司 Rotating shaft type hammer head presser for machining two hammer heads
CN104608406A (en) * 2015-01-05 2015-05-13 广州珠江钢琴集团股份有限公司 Manual hammer head presser

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104527109A (en) * 2015-01-05 2015-04-22 广州珠江钢琴集团股份有限公司 Rotating shaft type hammer head presser for machining two hammer heads
CN104608406A (en) * 2015-01-05 2015-05-13 广州珠江钢琴集团股份有限公司 Manual hammer head presser
CN104608406B (en) * 2015-01-05 2016-08-24 广州珠江钢琴集团股份有限公司 Manual hammerhead squeezer

Similar Documents

Publication Publication Date Title
CN203901639U (en) Insert embedded type injection molding die
CN202922998U (en) Piano hammer head forming oil press
CN107335764A (en) A kind of cable connector closing in compressing method and compaction mold
CN202489320U (en) Compression die for forming of shoe
CN206535940U (en) A kind of handset shell diel
CN201776402U (en) Injection-compression molding machine
CN201619374U (en) Die with relief texture patterns
CN203697161U (en) Pneumatic control timber fixing mechanism
CN203409964U (en) Plastic injection mold for automobile signboards
CN207170590U (en) A kind of active module counter plate bend punching die for reducing round steel V-type bending scratch
CN202506699U (en) 8-byte grid steel frame cold pressing device
CN205110536U (en) Overware layering preflex mould
CN205363122U (en) Door frame jig for welding
CN204687382U (en) A kind of building decorative composite board presser device
CN205463894U (en) Hole flanging mould
CN205096375U (en) Silencer dustcoat stamping die
CN205096379U (en) Deep bead stamping die
CN204566742U (en) The rotary shaft hammerhead squeezer of processing two cover hammerhead
CN105618577A (en) Precise composite mold
CN204504002U (en) The automatic punching device of shell fragment is added for notebook wire rod
CN104527109B (en) The rotary shaft hammerhead squeezer of processing two cover hammerhead
CN203621251U (en) Expansion modeling internal die mechanism
CN203945705U (en) A kind of ridge tiles twin-tub molding press device
CN202655569U (en) Die pressing device
CN204315298U (en) Die frame is pressed in the drawing of a kind of novel cable compact conductor

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130508

Termination date: 20171112