JPH0540987Y2 - - Google Patents
Info
- Publication number
- JPH0540987Y2 JPH0540987Y2 JP1989026395U JP2639589U JPH0540987Y2 JP H0540987 Y2 JPH0540987 Y2 JP H0540987Y2 JP 1989026395 U JP1989026395 U JP 1989026395U JP 2639589 U JP2639589 U JP 2639589U JP H0540987 Y2 JPH0540987 Y2 JP H0540987Y2
- Authority
- JP
- Japan
- Prior art keywords
- plate
- hole
- support pin
- movable
- protruding
- 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 - Lifetime
Links
- 238000002347 injection Methods 0.000 claims description 16
- 239000007924 injection Substances 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 125000006850 spacer group Chemical group 0.000 claims description 6
- 230000000694 effects Effects 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） 本考案は射出成形用金型に関する。[Detailed explanation of the idea] (Industrial application field) The present invention relates to an injection mold.
（従来の技術）
射出成形機においては成形品の寸法精度に厳し
いものが要求されるため、当然射出成形用金型の
各部の寸法も厳しい精度が要求されている。例え
ば第４図に示すように入子型（一部分を図示）は
がたつきなく装着させるため可動側背板２００と
突出板２０２の最大離反距離Ｚや、両板２００、
２０２の平行度に高精度が要求されている。その
ため、突出板２０２の矢印Ｙ方向の進退動をガイ
ドするサポートピン２０４……の長さＸ、サポー
トピン２０４……の鍔部２０６……の厚さＷ、可
動側背板２００に穿設されたサポートピン２０４
……挿通用の貫通孔２０８……の大径部分を形成
するための座ぐり深さＷ等を公差±0.01mmの精度
で仕上げている。(Prior Art) Since an injection molding machine requires strict dimensional accuracy of a molded product, it is natural that strict dimensional accuracy is also required for each part of an injection mold. For example, as shown in FIG. 4, the maximum separation distance Z between the movable back plate 200 and the protruding plate 202, both plates 200,
High accuracy is required for the parallelism of 202. Therefore, the length X of the support pins 204 that guide the forward and backward movements of the protruding plate 202 in the direction of the arrow Y, the thickness W of the flanges 206 of the support pins 204, and the thickness W of the support pins 204 that are bored in the movable back plate 200. support pin 204
The counterbore depth W, etc. for forming the large diameter portion of the through hole 208 for insertion is finished with an accuracy of ±0.01 mm.
（考案が解決しようとする問題点）
しかしながら、上記の従来の射出成形用金型に
は次のような課題がある。(Problems to be Solved by the Invention) However, the conventional injection mold described above has the following problems.
可動側背板２００と突出板２０２の距離Ｚはサ
ポートピン２０４……の長さＸを高精度に仕上げ
ても鍔部２０６……の厚さＷと貫通孔２０８……
の座ぐり深さＷの精度が伴わなければ距離Ｚの精
度を上げることが難しい。そのため鍔部２０６…
…の形成と貫通孔２０８……の座ぐり加工が非常
に手間のかかる作業となる。また、両者を高精度
に仕上げても、温度変化によつて僅かながらも狂
いが生じ、サポートピン２０４……ががたつくと
射出圧力等による応力集中によりボルトの損傷
や、サポートピン２０４……と突出板２０２との
間にかじり等の損傷が発生してしまうという課題
がある。 The distance Z between the movable side back plate 200 and the protruding plate 202 is determined by the thickness W of the collar portion 206 and the through hole 208 even if the length X of the support pin 204 is finished with high precision.
It is difficult to increase the accuracy of the distance Z unless the accuracy of the counterbore depth W is increased. Therefore, the collar part 206...
The formation of the through holes 208 and the counterboring of the through holes 208 are extremely time-consuming operations. In addition, even if both are finished with high precision, slight deviations may occur due to temperature changes, and if the support pin 204... wobbles, the bolt may be damaged due to stress concentration due to injection pressure, etc., or the support pin 204... may protrude. There is a problem in that damage such as galling occurs between the plate 202 and the plate 202.
加えて、サポートピン２０４……の左端部には
突出板２０２の左方への退動を規制するストツパ
２１０……がボルト２１２……を介して固定され
ている。そのため突出板２０２の透孔２１４……
にストツパ２１０……と掛止可能な深さＶの段差
２１６……を設ける必要があり、深さＶを正確に
出すための加工が煩雑となるという課題もある。 In addition, a stopper 210 for restricting the leftward movement of the protruding plate 202 is fixed to the left end of the support pin 204 via a bolt 212. Therefore, the through hole 214 of the protruding plate 202...
It is necessary to provide a step 216 with a depth V that can be latched with the stopper 210, and there is also the problem that processing to accurately obtain the depth V becomes complicated.
したがつて、本考案は加工および精度出しが容
易な射出成形用金型を提供することを目的とす
る。 Therefore, it is an object of the present invention to provide an injection mold that is easy to process and achieve precision.
（考案を解決するための手段）
上記課題を解決するため、本考案は次の構成を
備える。(Means for solving the invention) In order to solve the above problems, the present invention has the following configuration.
すなわち、可動側型板と、該可動側型板の背面
に固定された可動側背板と、該可動側背板に一端
が固定され、可動背板の背面から延設されたサポ
ートピンと、該サポートピンが挿通されると共
に、サポートピン上を前記可動側背板に対して進
退動可能な突出板と、該突出板へ一端が固定さ
れ、前記可動側背板方向へ突設されると共に前記
可動側型板および可動側背板を貫通して設けら
れ、突出板が可動側背板方向へ移動した際には可
動側型板のキヤビテイ側面から他端が突出して成
形品を突き出す突出ピンと、該突出板を前記可動
側背板に対して進退動させるための押動機構とを
具備する射出成形用金型において、前記可動側背
板には突出板側の端部内径が前記可動側型板側の
端部内径より小径となるよう内壁面に段差を有す
る前記サポートピン挿通用の貫通孔を設け、前記
サポートピンの一方の端部には、前記貫通孔の大
径部分の深さより肉薄に形成されると共に、サポ
ートピンが貫通孔へ挿通された際には前記段差と
掛止可能な鍔部を設け、前記貫通孔内の前記段差
と前記サポートピンの前記鍔部との間に、弾性変
形可能であると共に、サポートピンを常時前記可
動側型板方向へ付勢するための付勢部材を設け、
前記サポートピンの他方の端部には、前記突出板
の退動量を規制する規制部を設けたことを特徴と
する。 That is, a movable side mold plate, a movable side back plate fixed to the back surface of the movable side mold plate, a support pin having one end fixed to the movable side back plate and extending from the back surface of the movable back plate; a protruding plate into which a support pin is inserted, and which is movable forward and backward relative to the movable back plate on the support pin; one end of which is fixed to the protruding plate; a protrusion pin that is provided through the movable side mold plate and the movable side back plate, and whose other end protrudes from the cavity side surface of the movable side template to project the molded product when the protrusion plate moves toward the movable side back plate; In the injection molding mold, the movable back plate has an inner diameter of an end on the protrusion plate side that is closer to the movable side mold. A through hole for inserting the support pin is provided with a step on the inner wall surface so that the diameter is smaller than the inner diameter of the end on the plate side, and one end of the support pin has a wall thinner than the depth of the large diameter portion of the through hole. and a flange that can be hooked to the step when the support pin is inserted into the through hole, and between the step in the through hole and the flange of the support pin, Provided with a biasing member that is elastically deformable and always biases the support pin toward the movable template;
The present invention is characterized in that the other end of the support pin is provided with a regulating portion that regulates the amount of retraction of the protruding plate.
また、上記の射出成形用金型において、前記突
出板は、第１の板体と、スペーサを介して該第１
の板体と所定の距離離間して前記可動側背板と反
対側に設けられた第２の板体とから成り、前記第
１の板体には、前記サポートピンが挿通される第
１の透孔を設け、前記第２の板体には、前記第１
の透孔と同軸であり、第１の透孔より大径であつ
て内壁面は無段差に形成された第２の透孔を設
け、前記規制部は、前記第２の板体の前記第２の
透孔内へ挿入され、前記第１の板体の第１の透孔
内には挿入不能としてもよい。 Further, in the above injection mold, the protruding plate is connected to the first plate via a spacer.
and a second plate provided on the opposite side of the movable side back plate at a predetermined distance apart, and the first plate includes a first plate through which the support pin is inserted. A through hole is provided in the second plate, and the first plate is provided with a through hole.
A second through hole is provided, which is coaxial with the through hole of the second plate body, has a larger diameter than the first through hole, and has an inner wall surface formed with no step, and the regulating portion is arranged in the second plate body. The first plate body may be inserted into the first through hole of the first plate body, and may not be inserted into the first through hole of the first plate body.
（作用） 作用について説明する。(effect) The effect will be explained.
サポートピンの鍔部を付勢部材により常時、可
動側型板方向へ押動するので、サポートピンの鍔
部の形成、および可動側背板の貫通孔内の段差の
形成に際して貫通孔の大径部分の深さを鍔部の厚
さより深くすれば、多少の寸法誤差は付勢部材の
押圧によつてカバーできる。したがつて、鍔部の
厚さや貫通孔の大径部分の深さを多少ラフに加工
することが可能となる。また、突出板を、離間し
た第１および第２の板体で形成し、規制部材を第
２の透孔内へ挿入し、第１の板体と掛止するよう
にすれば第２の透孔には段差を設ける必要がなく
穿孔作業が容易となる。 Since the flange of the support pin is constantly pushed toward the movable mold plate by the biasing member, the large diameter of the through hole is By making the depth of the portion deeper than the thickness of the flange, some dimensional errors can be covered by the pressure of the biasing member. Therefore, it is possible to process the thickness of the flange portion and the depth of the large diameter portion of the through hole somewhat roughly. Further, if the protruding plate is formed of first and second plate bodies separated from each other, and the regulating member is inserted into the second through hole and hooked to the first plate body, the second transparent plate is formed. There is no need to provide a step in the hole, making the drilling work easier.
（実施例）
以下、本考案の好適な実施例を添付図面と共に
詳述する。(Embodiments) Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
第１図には本実施例の入子式射出成形用金型の
正面断面図を示す。 FIG. 1 shows a front sectional view of the nested injection mold of this embodiment.
射出成形用金型である入子型１０は固定盤１２
と可動盤１４の間に装着されている。図示の状態
は固定側型板１６と可動側型板１８が型閉した状
態であり、両型板１６，１８の内側対向面に形成
されたキヤビテイ２０内へ、射出ノズル２２から
樹脂が射出されて成形が行なわれる。キヤビテイ
２０内の樹脂が凝固したら不図示の駆動機構によ
つて可動盤１４が矢印Ａ方向へ移動して型開が行
われる。その際適宜な機構によつて押動機構であ
る突出ロツド２４が右方へ前進し、突出板２６を
右方へ押動する。すると突出板２６に左端が固定
された突出ピン２８がキヤビテイ２０内へ突入す
ると共に成形品をキヤビテイ２０内から離型させ
る。 The nesting mold 10, which is an injection mold, has a fixed platen 12.
and the movable platen 14. In the illustrated state, the fixed mold plate 16 and the movable mold plate 18 are closed, and resin is injected from the injection nozzle 22 into the cavity 20 formed on the inner facing surfaces of both mold plates 16 and 18. The molding is then carried out. Once the resin in the cavity 20 has solidified, the movable platen 14 is moved in the direction of arrow A by a drive mechanism (not shown) to open the mold. At this time, the protruding rod 24, which is a pushing mechanism, moves forward to the right by an appropriate mechanism, and pushes the protruding plate 26 to the right. Then, the protruding pin 28 whose left end is fixed to the protruding plate 26 projects into the cavity 20 and releases the molded product from the cavity 20.
この可動側型板１８と突出板２６の構成を第２
図と共に説明する。 The configuration of the movable side mold plate 18 and the protruding plate 26 is referred to as the second
Explained with reference to the figures.
３０は可動側背板であり、ボルト３２……を介
して可動側型板１８の背面へ固定されている。可
動側背板３０には突出板２６の矢印Ｂ方向の進退
動をガイドするサポートピン３４……を挿通する
貫通孔３６……が穿設されている。貫通孔３６…
…の右側は大径に、左側は小径になるよう段差３
８……が内壁面に形成されている。その貫通孔３
６……の大径部分の深さをＣとする。 Reference numeral 30 denotes a movable side back plate, which is fixed to the back side of the movable side template 18 via bolts 32 . The movable back plate 30 is provided with through holes 36 through which support pins 34 that guide the forward and backward movement of the protruding plate 26 in the direction of arrow B are inserted. Through hole 36...
3 steps so that the right side of ... has a large diameter and the left side has a small diameter.
8... is formed on the inner wall surface. The through hole 3
Let C be the depth of the large diameter portion of 6....
サポートピン３４……は右端部に鍔部４０……
が形成されている。鍔部４０……の径は貫通孔３
６……の大径部分の径より僅か小径であつて、大
径部分に挿入可能になつている。一方、鍔部４０
……の厚さＤは大径部分の深さＣより薄く形成さ
れている。 The support pin 34... has a flange part 40... on the right end.
is formed. The diameter of the flange 40 is the same as that of the through hole 3.
The diameter is slightly smaller than the diameter of the large diameter portion of No. 6, so that it can be inserted into the large diameter portion. On the other hand, the flange 40
The thickness D of ... is formed thinner than the depth C of the large diameter portion.
４２……は付勢部材である弾性ワツシヤであ
る。弾性ワツシヤ４２……は例えば四フツ化エチ
レンでリング状に形成され、貫通孔３６……の段
差３８……とサポートピン３４……の鍔部４０…
…との間に弾装されている。弾性ワツシヤ４２…
…は鍔部４０……の外側端面を常時可動側型板１
８の背面へ押圧する。弾性ワツシヤ４２……は弾
性変形が可能なため、鍔部４０……の厚さＤと弾
性ワツシヤ４２……の厚さの和が貫通孔３６……
の大径部分の深さＤより多少大きくても可動側背
板３０を可動側型板１８の背面へ固定した際には
鍔部４０……の外側端面が可動側背板３０の右側
面から突出することはない。なお、付勢部材とし
ては四フツ化エチレン製の弾性ワツシヤの他、ウ
レタンやナイロン製の弾性ワツシヤ、コイルバ
ネ、板バネ、皿バネ等も用いることもできる。 42... is an elastic washer which is a biasing member. The elastic washer 42 is made of, for example, tetrafluoroethylene and has a ring shape, and is connected to the step 38 of the through hole 36 and the flange 40 of the support pin 34.
It is loaded with bullets between... Elastic washers 42...
... is always movable side template 1 on the outer end surface of flange 40...
Press it to the back of 8. Since the elastic washer 42... is capable of elastic deformation, the sum of the thickness D of the collar portion 40... and the thickness of the elastic washer 42... is the through hole 36...
Even if the depth D of the large diameter portion of Nothing stands out. As the urging member, in addition to an elastic washer made of tetrafluoroethylene, an elastic washer made of urethane or nylon, a coil spring, a plate spring, a disc spring, etc. can also be used.
突出板２６は第１の板体４４と第２の板体４６
とからなり、突出ピン２８の左端部に形成された
フランジ部４８と同一の厚さＥのスペーサ５０…
…が両板体４４，４６の間に介挿されている。両
板体４４，４６とスペーサ５０……はボルト５２
……を介して一体に固定されており、その結果、
突出ピン２８のフランジ部４８の両端面は第１の
板体４４と第２の板体２６の対向面同士で挟持さ
れる。第１の板体４４にはサポートピン３４……
が挿通可能で内壁面は無段差の第１の透孔５４…
…が透設され、サポートピン３４……が挿通され
ている。一方、第２の板体４６には第１の透孔５
４……と同軸で、内径が第１の透孔５４……より
大径であつて内壁面は無段差の第２の透孔５６…
…が透設されている。 The protruding plate 26 has a first plate body 44 and a second plate body 46.
A spacer 50 having the same thickness E as the flange portion 48 formed at the left end of the protruding pin 28...
... is inserted between both plate members 44 and 46. Both plate bodies 44, 46 and spacer 50... are bolts 52
They are fixed together through ......, and as a result,
Both end surfaces of the flange portion 48 of the protruding pin 28 are held between the opposing surfaces of the first plate 44 and the second plate 26. The first plate body 44 has support pins 34...
A first through hole 54 through which can be inserted and whose inner wall surface is stepless...
... are provided transparently, and support pins 34 ... are inserted therethrough. On the other hand, the second plate body 46 has a first through hole 5.
A second through hole 56 is coaxial with 4... and has a larger inner diameter than the first through hole 54 and has a stepless inner wall surface.
...is transparent.
５８……は規制部であるストツパであり、外形
が第２の透孔５６……の内径より小径、かつ第１
の透孔５４……内径より大径の円筒に形成されて
いる。ストツパ５８……はサポートピン３４……
の左端面にボルト６０……を介して固定されてい
る。このストツパ５８……の長さＦはストツパ５
８……の左端面が第２の板体４６が最も後退した
第２図図示の状態において、第２の板体４６の左
側面から突出しないサイズであり、また、ボルト
６０……の左端面もその際第２の板体４６の左側
面から突出しないようになつている。ストツパ５
８……は、突出板２６が第１の板体４４と可動側
背板３０との間に弾装されたスプリング６２……
によつて左方へ押動（後退）された際に、第１の
板体４４の左側面と当接して突出板２６の左方へ
の退動量を規制している。 58... is a stopper which is a regulating part, and the outer diameter is smaller than the inner diameter of the second through hole 56... and the first
The through hole 54 is formed into a cylinder having a diameter larger than the inner diameter. Stopper 58... is support pin 34...
It is fixed to the left end surface of the board via bolts 60. The length F of this stopper 58 is the stopper 5
The left end surface of the bolt 60 is of such a size that it does not protrude from the left side surface of the second plate 46 in the state shown in FIG. In this case, the second plate body 46 is configured so that it does not protrude from the left side surface thereof. Stoppa 5
8... is a spring 62... in which the protruding plate 26 is elastically loaded between the first plate body 44 and the movable side back plate 30.
When pushed (retracted) to the left by the protrusion plate 26, the protruding plate 26 comes into contact with the left side surface of the first plate 44 to restrict the amount of leftward retraction of the protruding plate 26.
上述の構成により、サポートピン３４……の長
さＧおよびスペーサ５０……の厚さＥさえ高精度
であれば第２の板体４６と可動側背板３０との距
離Ｈを高精度に設定することが可能となる。例え
ば、温度変化によつて貫通孔３６……の大径部分
の深さＣが変わつても弾性ワツシヤ４２……は弾
性変形可能なので鍔部４０……の外側端面の可動
側型板１８背面への押圧は確保可能となる。この
弾性ワツシヤ４２……が弾装されているので貫通
孔３６の大径部分の深さＣと、鍔部４０……の厚
さＤはそれほど高精度を要求されない。一方、突
出板２６においては、ストツパ５８……が円筒形
なため、第２の板体４６の第２の透孔５６……に
は第４図の従来の射出成形用金型のようにストツ
パ２１０……と掛止するための段差２１６……を
設ける必要がなく、加工が簡単となる。 With the above configuration, the distance H between the second plate 46 and the movable back plate 30 can be set with high precision as long as the length G of the support pin 34 and the thickness E of the spacer 50 are highly accurate. It becomes possible to do so. For example, even if the depth C of the large diameter portion of the through hole 36 changes due to temperature changes, the elastic washer 42 can be elastically deformed, so the elastic washer 42 can be elastically deformed, so It becomes possible to ensure the pressure of Since the elastic washers 42 are loaded, the depth C of the large diameter portion of the through hole 36 and the thickness D of the flange 40 do not require very high precision. On the other hand, in the protruding plate 26, the stopper 58... is cylindrical, so the second through hole 56... of the second plate body 46 has a stopper as in the conventional injection mold shown in FIG. There is no need to provide a step 216 for hooking the parts 210 and 210, which simplifies processing.
次に動作について説明する。 Next, the operation will be explained.
第１図に示す状態で射出成形が行われ、可動盤
１４が矢印Ａ方向へ移動して型開が行われる。そ
して突出ロツド２４が右方へ移動して、突出ロツ
ド２４の先端が第２の板体４６の左側面を右方へ
押す。すると、突出板２６である第１および第２
の板体４４，４６はスプリング６２……の付勢力
に抗して右方へ移動する。その際、第１の板体４
４はサポートピン３４……外周上を摺動し、第２
の板体４６はストツパ５８……外周上を摺動して
移動する。突出板２６の移動により突出ピン２８
は先端がキヤビテイ２０内へ突入して成形品（不
図示）をキヤビテイ２０から離型させる。そし
て、突出ロツド２４が左方へ移動すると突出板２
６はスプリング６２……の付勢力により左方へ後
退する。そして、第２の板体４６と可動側背板３
０の距離Ｈが所定値に達するとストツパ５８……
右端面と第１の板体４４の左側面が当接して突出
板２６の退動は停止し、突出板２６は従前状態に
戻る。 Injection molding is performed in the state shown in FIG. 1, and the movable platen 14 is moved in the direction of arrow A to open the mold. Then, the protruding rod 24 moves to the right, and the tip of the protruding rod 24 pushes the left side surface of the second plate 46 to the right. Then, the first and second protruding plates 26
The plates 44, 46 move to the right against the biasing force of the springs 62. At that time, the first plate 4
4 is a support pin 34... which slides on the outer periphery and
The plate body 46 slides on the outer periphery of the stopper 58. By moving the protruding plate 26, the protruding pin 28
The tip enters into the cavity 20 and releases the molded product (not shown) from the cavity 20. When the protruding rod 24 moves to the left, the protruding plate 2
6 retreats to the left due to the urging force of the springs 62. Then, the second plate body 46 and the movable side back plate 3
When the distance H of 0 reaches a predetermined value, the stopper 58...
The right end surface and the left side surface of the first plate body 44 come into contact with each other, and the retraction of the protruding plate 26 is stopped, and the protruding plate 26 returns to its previous state.
そして再び型閉を行えば次の成形作業が可能と
なる。 Then, by closing the mold again, the next molding operation is possible.
次に、第３図と共に他の実施例について説明す
る。この実施例は突出板１００の構成が従来例
（第４図に示すもの）と同じ構成になつており、
可動側背板１０２に設けられた貫通孔１０４……
内にサポートピン１０６……を取り付ける際に、
鍔部１０８……と貫通孔１０４……内壁面の段差
１１０……の間に付勢部材１１２……が弾装され
ているのは前実施例と同じである。この実施例で
は従来例と比べ貫通孔１０４……の大径部分の深
さＣ１とサポートピン１０６……の鍔部１０８…
…の厚さＤ１に高精度を要求されない分だけ製作
時の加工作業が容易になる。 Next, another embodiment will be described with reference to FIG. In this embodiment, the structure of the protruding plate 100 is the same as that of the conventional example (shown in FIG. 4).
Through holes 104 provided in the movable back plate 102...
When installing the support pin 106... inside,
As in the previous embodiment, a biasing member 112 is mounted between the collar portion 108 and the step 110 on the inner wall surface of the through hole 104. In this embodiment, compared to the conventional example, the depth C1 of the large diameter portion of the through hole 104... and the flange portion 108... of the support pin 106...
Since high accuracy is not required for the thickness D1 of . . . , the machining work during manufacturing becomes easier.
以上本考案の好適な実施例について種々述べて
きたが、本考案は上述の実施例に限定されるので
はなく、例えば本考案を入子式以外の射出成形用
金型に用いてもよい等、考案の精神を逸脱しない
範囲でさらに多くの改変を施し得るのはもちろん
である。 Although various preferred embodiments of the present invention have been described above, the present invention is not limited to the above-mentioned embodiments. For example, the present invention may be used in injection molds other than the nested type. Of course, many more modifications can be made without departing from the spirit of the invention.
（考案の効果）
本考案に係る射出成形用金型を用いると、サポ
ートピンの鍔部の厚さと、可動側背板の貫通孔の
段差を形成する際に大径部分の深さとに高精度が
要求されないので製造加工作業が能率的に行え、
生産性を向上させることができる。(Effects of the invention) When the injection molding mold according to the invention is used, the thickness of the flange of the support pin and the depth of the large diameter part when forming the step of the through hole of the movable side back plate can be adjusted with high accuracy. Since no processing is required, manufacturing and processing work can be carried out efficiently.
Productivity can be improved.
また、付勢部材の弾装によつて、温度変化によ
る可動側背板の貫通孔の大径部分の深さが変化し
ても付勢部材の弾性変形によつて精度を維持でき
る。また、請求項２の構成を採用すると、突出板
の透孔に段差を設ける必要がなくなり、より製造
加工作業を容易にすることができる等の著効を奏
する。 In addition, due to the elastic loading of the biasing member, accuracy can be maintained by elastic deformation of the biasing member even if the depth of the large diameter portion of the through hole in the movable side back plate changes due to temperature changes. Moreover, when the configuration of claim 2 is adopted, there is no need to provide a step in the through hole of the protruding plate, and there are significant effects such as making the manufacturing process easier.
第１図は本考案に係る射出成形用金型の実施例
である入子式金型を示した正面断面図、第２図は
その可動側の要部を示した正面断面図、第３図は
他の実施例を示した可動側の要部を示した正面断
面図、第４図は従来の入子式射出成形用金型の可
動側の要部を示した正面断面図。
１０……入子型、１６……固定側型板、１８…
…可動側型板、２０……キヤビテイ、２４……突
出ロツド、２６……突出板、２８……突出ピン、
３０……可動側背板、３４……サポートピン、３
６……貫通孔、３８……段差、４０……鍔部、４
２……弾性ワツシヤ、４４……第１の板体、４６
……第２の板体、５０……スペーサ、５４……第
１の透孔、５６……第２の透孔、５８……ストツ
パ、１００……突出板、１０２……可動側背板、
１０４……貫通孔、１０６……サポートピン、１
０８……鍔部、１１０……段差、１１２……付勢
部材。
Fig. 1 is a front sectional view showing a telescoping mold which is an embodiment of the injection mold according to the present invention, Fig. 2 is a front sectional view showing the main parts on the movable side, and Fig. 3 FIG. 4 is a front sectional view showing the main parts on the movable side of another embodiment, and FIG. 4 is a front sectional view showing the main parts on the movable side of a conventional nested injection mold. 10... Nested mold, 16... Fixed side template, 18...
...Movable side template, 20... Cavity, 24... Protruding rod, 26... Protruding plate, 28... Protruding pin,
30...Movable side back plate, 34...Support pin, 3
6... Through hole, 38... Step, 40... Flange, 4
2...Elastic washer, 44...First plate, 46
... second plate body, 50 ... spacer, 54 ... first through hole, 56 ... second through hole, 58 ... stopper, 100 ... protruding plate, 102 ... movable side back plate,
104...Through hole, 106...Support pin, 1
08... Flange portion, 110... Step, 112... Biasing member.
Claims (1)
と、 該可動側背板に一端が固定され、可動背板の
背面から延設されたサポートピンと、 該サポートピンが挿通されると共に、サポー
トピン上を前記可動側背板に対して進退動可能
な突出板と、 該突出板へ一端が固定され、前記可動側背板
方向へ突設されると共に前記可動側型板および
可動側背板を貫通して設けられ、突出板が可動
側背板方向へ移動した際には可動側型板のキヤ
ビテイ側面から他端が突出して成形品を突き出
す突出ピンと、 該突出板を前記可動側背板に対して進退動さ
せるための押動機構とを具備する射出成形用金
型において、 前記可動側背板には突出板側の端部内径が前
記可動側型板側の端部内径より小径となるよう
内壁面に段差を有する前記サポートピン挿通用
の貫通孔を設け、 前記サポートピンの一方の端部には、前記貫
通孔の大径部分の深さより肉薄に形成されると
共に、サポートピンが貫通孔へ挿通された際に
は前記段差と掛止可能な鍔部を設け、 前記貫通孔内の前記段差と前記サポートピン
の前記鍔部との間に、弾性変形可能であると共
に、サポートピンを常時前記可動側型板方向へ
付勢するための付勢部材を設け、 前記サポートピンの他方の端部には、前記突
出板の退動量を規制する規制部を設けたことを
特徴とする射出成形用金型。 ２ 前記突出板は、第１の板体と、スペーサを介
して該第１の板体と所定の距離離間して前記可
動側背板と反対側に設けられた第２の板体とか
ら成り、 前記第１の板体には、前記サポートピンが挿
通される第１の透孔が設けられ、 前記第２の板体には、前記第１の透孔と同軸
であり、第１の透孔より大径であつて内壁面は
無段差に形成された第２の透孔が設けられ、 前記規制部は、前記第２の板体の前記第２の
透孔内へ挿入され、前記第１の板体の第１の透
孔内には挿入不能であることを特徴とする請求
項１記載の射出成形用金型。[Scope of Claim for Utility Model Registration] 1. A movable template, a movable back plate fixed to the back of the movable template, and a movable back plate with one end fixed to the movable back plate and extending from the back of the movable back plate. a protruding plate into which the support pin is inserted and which can move forward and backward on the support pin with respect to the movable back plate; one end of which is fixed to the protruding plate, and the protruding plate has one end fixed to the movable back plate; The movable mold plate and the movable back plate are provided so as to protrude from each other, and when the protruding plate moves toward the movable side back plate, the other end protrudes from the side surface of the cavity of the movable mold plate. An injection mold comprising a protruding pin for protruding a molded product and a pushing mechanism for moving the protruding plate forward and backward relative to the movable back plate, wherein the movable back plate has an end on the protruding plate side. A through hole for inserting the support pin is provided with a step on the inner wall surface so that the inner diameter of the end portion thereof is smaller than the inner diameter of the end portion on the movable template side, and one end of the support pin is provided with a through hole for inserting the support pin. A flange is formed to be thinner than the depth of the large-diameter portion, and is capable of engaging with the step when the support pin is inserted into the through-hole, so that the support pin is connected to the step in the through-hole. A biasing member that is elastically deformable and always biases the support pin toward the movable mold plate is provided between the flange and the protruding plate at the other end of the support pin. An injection mold characterized by being provided with a regulating part that regulates the amount of retraction of the mold. 2. The protruding plate includes a first plate and a second plate provided on the opposite side of the movable back plate and spaced apart from the first plate by a predetermined distance via a spacer. , the first plate body is provided with a first through hole through which the support pin is inserted, and the second plate body is provided with a first through hole that is coaxial with the first through hole and is provided with a first through hole through which the support pin is inserted. A second through hole is provided that has a larger diameter than the hole and has a stepless inner wall surface, and the regulating portion is inserted into the second through hole of the second plate body and The injection mold according to claim 1, wherein the mold cannot be inserted into the first through hole of the first plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989026395U JPH0540987Y2 (en) | 1989-03-08 | 1989-03-08 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989026395U JPH0540987Y2 (en) | 1989-03-08 | 1989-03-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02117123U JPH02117123U (en) | 1990-09-19 |
| JPH0540987Y2 true JPH0540987Y2 (en) | 1993-10-18 |
Family
ID=31247979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989026395U Expired - Lifetime JPH0540987Y2 (en) | 1989-03-08 | 1989-03-08 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0540987Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5929138A (en) * | 1982-08-10 | 1984-02-16 | Nissan Motor Co Ltd | Mold for injection molding |
| JPS62183318A (en) * | 1986-02-07 | 1987-08-11 | Yamapura:Kk | Synthetic resin injection mold |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS617055Y2 (en) * | 1980-03-13 | 1986-03-04 |
-
1989
- 1989-03-08 JP JP1989026395U patent/JPH0540987Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5929138A (en) * | 1982-08-10 | 1984-02-16 | Nissan Motor Co Ltd | Mold for injection molding |
| JPS62183318A (en) * | 1986-02-07 | 1987-08-11 | Yamapura:Kk | Synthetic resin injection mold |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02117123U (en) | 1990-09-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5650385B2 (en) | Injection mold | |
| CN110774534A (en) | Undercut processing mechanism and molding die | |
| JP3296844B2 (en) | Mold for molding cylindrical objects with inner diameter undercut | |
| JPH0540987Y2 (en) | ||
| JP3225897U (en) | Mold for injection molding of resin molded products | |
| JP2003025389A (en) | Mold for injection molding cylindrical molding and method for injection molding | |
| JPWO2004045822A1 (en) | Mold for molding, molding method, disk substrate and molding machine | |
| CN211807585U (en) | Lock cylinder connecting piece mould | |
| JPH03222708A (en) | Undercut treatment structure for injection mold | |
| JP2998529B2 (en) | Resin molding equipment | |
| CN217993358U (en) | Two-plate bending forming die and resin product | |
| JPS63116817A (en) | Insert mold | |
| JPH0443489B2 (en) | ||
| JPH08276470A (en) | Injection mold | |
| JPH0110188Y2 (en) | ||
| CN211803517U (en) | Mould for forming cylindrical thin-wall part | |
| JPH04307217A (en) | Mold for insert molding | |
| JP4050918B2 (en) | Injection mold | |
| JPH0533309Y2 (en) | ||
| JPH11192647A (en) | Slide mechanism in injection mold | |
| TWI757632B (en) | Injection mold | |
| CN218615178U (en) | Double-plug-pin type die opening and closing sequence control mechanism | |
| WO2023042719A1 (en) | Slide mechanism, undercut processing mechanism, and molding die | |
| CN211071834U (en) | Die set | |
| JPS591783Y2 (en) | Undercut mold with slide core positioning mechanism |