TWM460770U - Multi-point balanced press mechanism - Google Patents
Multi-point balanced press mechanism Download PDFInfo
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- TWM460770U TWM460770U TW102208836U TW102208836U TWM460770U TW M460770 U TWM460770 U TW M460770U TW 102208836 U TW102208836 U TW 102208836U TW 102208836 U TW102208836 U TW 102208836U TW M460770 U TWM460770 U TW M460770U
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Description
本新型係有關一種沖床結構，尤指一種多點平衡式沖床機構。The present invention relates to a punch structure, and more particularly to a multi-point balanced punch mechanism.
沖床在一般機械加工的使用中非常的普遍，其係利用滑塊垂直方向移動而下壓的方式使加工件受到模具擠壓而達到塑型的目的。由於必須對鐵材或其他的硬質物件進行塑型，沖床的下壓力道便必須相當大，使得沖床在精度的要求上尤其重要，以避免沖床加工的誤差，造成加工件的尺寸誤差問題。請配合參閱中華民國專利第M378108號之「沖床及其沖壓機構」，其揭露了一種運用兩種伺服馬達的沖壓機構，藉此放大整體的輸出力道。請配合參閱該案之「圖1」～「圖5」所示，圖中連接曲柄軸單元及沖頭的連接柱體僅為單一的一支，而沖頭為一方形塊體，沖頭的下方設置有一工作台，透過沖頭的垂直運動，以進行對應的機械加工。由於下壓力道大，因此單一的連接柱體在一段時間的使用之後容易發生偏心的問題，造成該沖頭的傾斜現象，使得加工件的精度受到嚴重的考驗。Punch presses are very common in the use of general machining. They use the slider to move in the vertical direction and press down to make the workpieces squeezed by the die to achieve the purpose of molding. Since the iron material or other hard objects must be molded, the lower pressure path of the punching machine must be quite large, so that the punching machine is particularly important in terms of accuracy, in order to avoid the error of the punching process and cause the dimensional error of the workpiece. Please refer to the "Punch and Stamping Mechanism" of the Republic of China Patent No. M378108, which discloses a punching mechanism using two kinds of servo motors, thereby amplifying the overall output force. Please refer to the "Figure 1" to "Figure 5" of the case. The connecting cylinder connecting the crankshaft unit and the punch is only a single one, and the punch is a square block, the punch A workbench is arranged underneath, through the vertical movement of the punch for corresponding machining. Due to the large downcomer, a single connecting cylinder is prone to eccentricity after a period of use, causing the tilt of the punch, which makes the accuracy of the workpiece severely tested.
為了解決偏心問題，請配合上述中華民國專利第M378108號中的「圖6」至「圖8」所示，其係利用兩組的傳動機構連接沖頭，藉此達到放大扭力之目的，除此之外，亦可透過設置於沖頭與傳動機構之間的兩連接柱體達到平衡之目的，以減少因長時間進行強大力道的機械加工後，所造成的偏心及傾斜問題。但雙連接柱體的結構具有下列缺點：In order to solve the problem of eccentricity, please refer to the "Figure 6" to "Figure 8" in the above-mentioned Republic of China Patent No. M378108, which uses two sets of transmission mechanisms to connect the punches, thereby achieving the purpose of amplifying the torque. In addition, the two connecting cylinders disposed between the punch and the transmission mechanism can be used for balance purposes to reduce eccentricity and tilting caused by long-term mechanical machining. However, the structure of the double-joint cylinder has the following disadvantages:
一、僅能達到單一方向的抗偏心能力，並無法達到全方向性的抗偏心能力。First, it can only achieve the anti-eccentric ability in a single direction, and can not achieve the omnidirectional anti-eccentricity.
二、不同傳動機構的下壓行程並不一定一致，僅要在時間上有些許不同，便會造成沖頭的傾斜，進而損壞工作台、模具及加工件，最糟的，也有可能損壞到該傳動機構。Second, the pressing stroke of different transmission mechanisms is not necessarily the same. It only needs to be slightly different in time, which will cause the inclination of the punch, which will damage the work table, the mold and the machining parts. In the worst case, it may damage the Transmission mechanism.
三、雙連接柱體之間具有相當的距離，在沖頭長時間進行機械加工後，沖頭位於雙連接柱體之間的區域由於並未受到連接柱體的支撐作用，因而容易發生翹曲的狀況，影響機械加工的精度。3. There is a considerable distance between the double connecting cylinders. After the punch is machined for a long time, the area of the punch between the double connecting cylinders is not supported by the connecting cylinder, so it is easy to warp. The condition affects the precision of machining.
綜合上述說明，單根的連接柱體以及雙根的連接柱體皆有其缺點，而有其解決之必要。In summary, the single connecting post and the double connecting post have their shortcomings, and it has to be solved.
本新型之主要目的，在於解決習知技術的沖床容易發生的偏心及傾斜，造成加工精度不足的問題。The main purpose of the present invention is to solve the problem that the eccentricity and inclination of the punch of the prior art are prone to occur, resulting in insufficient processing precision.
本新型之另一目的，在於避免使用多組傳動機構，而有可能因同步性不足影響加工精度及機構壽命的問題。Another object of the present invention is to avoid the use of multiple sets of transmission mechanisms, and there may be problems of machining accuracy and mechanism life due to insufficient synchronism.
為達上述目的，本新型提供一種多點平衡式沖床機構，配合一模具對一加工件進行加工，該多點平衡式沖床機構包括有一加工平台、一對應設置於該加工平台上的沖壓滑塊、一連接於該沖壓滑塊之一中心位置的中央導柱、複數對稱連接於該沖壓滑塊之一邊緣位置的邊緣導柱，以及一控制該沖壓滑塊進行垂直位移的垂直位移模組。該沖壓滑塊與該加工平台形成一置放該模具及該加工件的作業空間；該垂直位移模組對應連接該中央導柱及該些邊緣導柱，以帶動該沖壓滑塊進行垂直位移，進而於該作業空間配合該模具對該加工件進行對應加工。In order to achieve the above object, the present invention provides a multi-point balanced punching mechanism for processing a workpiece with a mold, the multi-point balanced punching mechanism comprising a processing platform and a punching slider correspondingly disposed on the processing platform a central guide column connected to a central position of the punching slider, a plurality of edge guide columns symmetrically connected to an edge of the punching slider, and a vertical displacement module for controlling the vertical displacement of the punching slider. The punching slider and the processing platform form a working space for placing the mold and the processing component; the vertical displacement module is connected to the central guiding pillar and the edge guiding pillars to drive the punching slider to perform vertical displacement. Further, the workpiece is processed correspondingly to the working space in the working space.
由上述說明可知，本新型具有下列特點：As can be seen from the above description, the present invention has the following characteristics:
一、透過該中央導柱及該些邊緣導柱的配合，而對稱性的形成支撐下壓結構，達到全方向性的抗偏心能力，並具有極佳的抗傾斜能力。1. Through the cooperation of the central guide post and the edge guide columns, the symmetry formation supports the down-press structure, achieves omnidirectional anti-eccentricity, and has excellent anti-tilt capability.
二、藉由對稱性的該些邊緣導柱以及位於中心的中央導柱作為該沖壓滑塊的支撐，因而可避免該沖壓塊頭的翹曲問題。2. The edge guide pillars with symmetry and the central guide pillar located at the center serve as the support of the punching slider, thereby avoiding the warpage problem of the stamping block head.
10‧‧‧加工平台10‧‧‧Processing platform
20‧‧‧沖壓滑塊20‧‧‧Pressing slider
21‧‧‧導引輪21‧‧‧ Guide wheel
22‧‧‧邊角22‧‧‧ corner
30‧‧‧中央導柱30‧‧‧Central Guide Column
40‧‧‧邊緣導柱40‧‧‧Edge guide post
50‧‧‧垂直位移模組50‧‧‧Vertical displacement module
51‧‧‧主體51‧‧‧ Subject
52‧‧‧偏心軸52‧‧‧Eccentric shaft
53‧‧‧軸孔53‧‧‧Axis hole
60‧‧‧作業空間60‧‧‧Work space
70‧‧‧殼體70‧‧‧shell
71‧‧‧定位柱71‧‧‧Positioning column
711‧‧‧導引側壁711‧‧‧ Guided sidewall
72‧‧‧位移定位件72‧‧‧Displacement locator
73‧‧‧輔助定位件73‧‧‧Auxiliary positioning parts
80‧‧‧模具80‧‧‧Mold
90‧‧‧旋轉動力源90‧‧‧Rotary power source
圖1，為本新型之立體外觀示意圖。FIG. 1 is a schematic perspective view of the present invention.
圖2，為本新型之側面結構示意圖。Figure 2 is a schematic view of the side structure of the present invention.
圖3，為本新型之部分分解立體結構示意圖。Fig. 3 is a partially exploded perspective view of the present invention.
圖4A，為本新型之動作示意圖一。FIG. 4A is a schematic diagram 1 of the operation of the present invention.
圖4B，為本新型之動作示意圖二。FIG. 4B is a schematic diagram 2 of the operation of the present invention.
有關本新型之詳細說明及技術內容，現就配合圖示說明如下：The detailed description and technical content of this new model are as follows:
請參閱「圖1」、「圖2」及「圖3」所示，本新型係為一種多點平衡式沖床機構，配合一模具80對一加工件（圖未示）進行加工，該多點平衡式沖床機構包括有一加工平台10、一對應設置於該加工平台10上的沖壓滑塊20、一連接於該沖壓滑塊20之一中心位置的中央導柱30、複數對稱連接於該沖壓滑塊20之一邊緣位置的邊緣導柱40，以及一控制該沖壓滑塊20進行垂直位移的垂直位移模組50，於本實施例中，該沖壓滑塊20為方形，而該些邊緣導柱40具有四個，並分別對應於該沖壓滑塊20的四個邊角22，此為該邊緣位置，而該中央導柱30則設置於該些邊緣導柱40的中心，即為該中心位置，藉此使該沖壓滑塊20的相對遠離該加工平台10的一側表面，能夠均勻的藉由該中央導柱30及該些邊緣導柱40進行力量的支撐及分散。該沖壓滑塊20與該加工平台10形成一置放該模具80及該加工件的作業空間60；該垂直位移模組50對應連接該中央導柱30及該些邊緣導柱40，以帶動該沖壓滑塊20進行垂直位移，進而於該作業空間60配合該模具80對該加工件進行對應加工。Please refer to "Fig. 1", "Fig. 2" and "Fig. 3". The present invention is a multi-point balanced punching mechanism, which is processed with a mold 80 for processing a workpiece (not shown). The balanced punching mechanism includes a processing platform 10, a punching slider 20 correspondingly disposed on the processing platform 10, a central guide post 30 connected to a central position of the punching slider 20, and a plurality of symmetrically connected to the punching slide An edge guide 40 at one edge of the block 20, and a vertical displacement module 50 for controlling the vertical displacement of the punching slider 20, in the embodiment, the punching slider 20 is square, and the edge guides 40 has four, and respectively corresponding to the four corners 22 of the punching slider 20, which is the edge position, and the central guide post 30 is disposed at the center of the edge guide pillars 40, that is, the center position Therefore, the side surface of the punching slider 20 that is relatively away from the processing platform 10 can be uniformly supported and dispersed by the central pillar 30 and the edge pillars 40. The punching slider 20 and the processing platform 10 form a working space 60 for the mold 80 and the workpiece; the vertical displacement module 50 is connected to the central pillar 30 and the edge pillars 40 to drive the The punching slider 20 is vertically displaced, and the working space 60 is matched with the mold 80 to perform corresponding processing on the workpiece.
請特別參閱「圖1」及「圖2」所示，本新型更具有一殼體70，該殼體70容置該加工平台10、該沖壓滑塊20、該中央導柱30、該些邊緣導柱40及該垂直位移模組50。該殼體70具有四個平行於該中央導柱30並對應於該些邊角22（示於「圖3」）的定位柱71，該些定位柱71分別具有兩相互垂直的導引側壁711，該些導引側壁711係供該沖壓滑塊20對應定位，為了更進一步的降低摩擦力，該沖壓滑塊20具有複數對應抵靠於該些導引側壁711的導引輪21，於本實施例中，每個定位柱71係具有兩個導引側壁711，因而該沖壓滑塊20對應該導引側壁711共具有八個導引輪21，可分別對該導引側壁711進行相對應的導引滑移，達到八面滑移及導引之功能，減少摩擦力的產生。除此之外，利用該沖壓滑塊20同一側的兩個導引輪21分別抵靠於相對兩側的導引側壁711，而可讓該沖壓滑塊20順著該導引側壁711進行垂直方向的位移，以避免垂直位移的偏差。Please refer to FIG. 1 and FIG. 2 for details. The present invention further has a housing 70 for housing the processing platform 10, the punching slider 20, the central guide post 30, and the edges. The guide post 40 and the vertical displacement module 50. The housing 70 has four positioning posts 71 parallel to the central guide post 30 and corresponding to the corners 22 (shown in FIG. 3). The positioning posts 71 respectively have two mutually perpendicular guiding sidewalls 711. The guiding sidewalls 711 are correspondingly positioned for the punching slider 20, and in order to further reduce the frictional force, the punching slider 20 has a plurality of guiding wheels 21 corresponding to the guiding sidewalls 711, In the embodiment, each of the positioning posts 71 has two guiding sidewalls 711, so that the punching slider 20 has a guiding guide wall 711 corresponding to a total of eight guiding wheels 21, which can respectively correspond to the guiding sidewalls 711. Guided slip, to achieve the function of eight-sided slip and guide, reducing friction. In addition, the two guide wheels 21 on the same side of the punching slider 20 respectively abut against the guiding side walls 711 on the opposite sides, so that the punching slider 20 can be vertically along the guiding side wall 711. The displacement of the direction to avoid deviation of the vertical displacement.
請配合參閱「圖2」及「圖3」，該垂直位移模組50包含有一主體51、一偏心軸52以及一供該偏心軸52貫穿該主體51的軸孔53，該些邊緣導柱40貫穿該主體51並固定連接於該主體51上，而該偏心軸52垂直於該些邊緣導柱40，並且該偏心軸52相對於該軸孔53位置的直徑，必須小於該軸孔53的直徑。於本實施例中，該殼體70具有複數設置於該主體51遠離該沖壓滑塊20一側的位移定位件72，該些位移定位件72供該些邊緣導柱40套設定位，該些邊緣導柱40係由該殼體70貫穿該主體51後連接至該沖壓滑塊20。Referring to FIG. 2 and FIG. 3 , the vertical displacement module 50 includes a main body 51 , an eccentric shaft 52 , and a shaft hole 53 through which the eccentric shaft 52 extends through the main body 51 . The edge guides 40 . The main body 51 is fixedly connected to the main body 51, and the eccentric shaft 52 is perpendicular to the edge guide posts 40, and the diameter of the eccentric shaft 52 relative to the shaft hole 53 must be smaller than the diameter of the shaft hole 53. . In this embodiment, the housing 70 has a plurality of displacement positioning members 72 disposed on a side of the main body 51 away from the punching slider 20, and the displacement positioning members 72 are configured to set the edge guide posts 40. The edge guide 40 is connected to the punching slider 20 after the housing 70 is inserted through the body 51.
請配合參閱「圖4A」及「圖4B」所示，其係為本新型之沖床動作示意圖，該偏心軸52係連接一旋轉動力源90，而利用旋轉動力帶動的方式使該偏心軸52進行偏心的旋轉，由於該偏心軸52相對應於該軸孔53位置的直徑小於該軸孔53的直徑，因而可使該主體51配合該偏心軸52的旋轉進行垂直方向的直線運動。當該偏心軸52因旋轉而移動接觸於該軸孔53的下方時，該主體51便會因為該偏心軸52的轉動力量而順著垂直往下運動；而當該偏心軸52因為旋轉而移動接觸於該軸孔53的上方時，該主體51便會因為該偏心軸52的轉動力量而順著垂直往上運動。Please refer to "FIG. 4A" and "FIG. 4B" for a schematic view of the punching operation of the present invention. The eccentric shaft 52 is connected to a rotary power source 90, and the eccentric shaft 52 is rotated by means of rotational power. In the eccentric rotation, since the diameter of the eccentric shaft 52 corresponding to the position of the shaft hole 53 is smaller than the diameter of the shaft hole 53, the main body 51 can be linearly moved in the vertical direction in accordance with the rotation of the eccentric shaft 52. When the eccentric shaft 52 moves into contact with the shaft hole 53 due to the rotation, the main body 51 moves downward according to the rotational force of the eccentric shaft 52; and when the eccentric shaft 52 moves due to the rotation When contacting the upper side of the shaft hole 53, the main body 51 moves vertically upward due to the rotational force of the eccentric shaft 52.
其中，該位移定位件72係與該邊緣導柱40套設連接，因此，該邊緣導柱40僅能以該位移定位件72為中心，進行垂直方向的直線運動；除此之外，該沖壓滑塊20透過該導引輪21而配合該定位柱71的導引側壁711進行對應抵靠，進而達到定位的目的，使該主體51透過該偏心軸52的旋轉帶動該中央導柱30、該些邊緣導柱40及該沖壓滑塊20進行垂直方向的直線運動。更進一步的，為了加強該沖壓滑塊20垂直位移的精確度，該殼體70更具有複數對應於該中央導柱30與該些邊緣導柱40的輔助定位件73，該些輔助定位件73係設置於該沖壓滑塊20與該主體51之間，以供該中央導柱30及該些邊緣導柱40貫穿定位。藉此，當該中央導柱30及該些邊緣導柱40在進行垂直位移時，透過該些輔助定位件73的套設定位，而更進一步的加強垂直方向位移的直線性。The displacement positioning member 72 is sleevedly connected to the edge guide post 40. Therefore, the edge guide post 40 can only perform linear motion in the vertical direction centering on the displacement positioning member 72; in addition, the stamping is performed. The slider 20 is matched with the guiding sidewall 711 of the positioning post 71 through the guiding wheel 21 to perform corresponding positioning, so as to achieve the purpose of positioning, the main body 51 drives the central guiding column 30 through the rotation of the eccentric shaft 52. The edge guides 40 and the punching slider 20 perform linear motion in the vertical direction. Further, in order to enhance the accuracy of the vertical displacement of the punching slider 20, the housing 70 further has a plurality of auxiliary positioning members 73 corresponding to the central guiding column 30 and the edge guiding columns 40, and the auxiliary positioning members 73. The punching slider 20 is disposed between the punching slider 20 and the main body 51 for positioning the central guiding post 30 and the edge guiding pillars 40. Thereby, when the central guide post 30 and the edge guide posts 40 are vertically displaced, the set positions of the auxiliary positioning members 73 are transmitted, and the linearity of the vertical displacement is further enhanced.
綜上所述，相較於習知技術，本新型具有下列特點：In summary, the present invention has the following features compared to conventional techniques:
一、透過該中央導柱及該些邊緣導柱的配合，而對稱性的形成支撐下壓結構，達到全方向性的抗偏心能力，並具有極佳的抗傾斜能力。1. Through the cooperation of the central guide post and the edge guide columns, the symmetry formation supports the down-press structure, achieves omnidirectional anti-eccentricity, and has excellent anti-tilt capability.
二、藉由對稱性的該些邊緣導柱以及位於中心的中央導柱作為該沖壓滑塊的支撐，因而可避免該沖壓滑塊的翹曲問題。Second, the edge guide pillars with symmetry and the central guide pillar located at the center serve as the support of the punching slider, thereby avoiding the warpage problem of the punching slider.
三、配合該導引側壁及該導引輪的設置，使該沖壓滑塊的各個面上分別與該定位柱抵靠定位，而具有較佳的垂直位移精準度。3. The positioning of the guiding side wall and the guiding wheel is matched, so that each surface of the punching slider is respectively positioned against the positioning post, and the vertical displacement accuracy is better.
四、利用該位移定位件及該輔助定位件，配合該定位柱上的導引側壁，分別在該些邊緣導柱的兩個端點以及中間位置進行對應的限位導引，而具有極佳的垂直移動穩定性以及精準度。4. Using the displacement positioning member and the auxiliary positioning member, and matching the guiding sidewalls on the positioning post, respectively performing corresponding limit guiding at the two end points and the middle position of the edge guiding columns, and having excellent Vertical movement stability and accuracy.
10‧‧‧加工平台 10‧‧‧Processing platform
20‧‧‧沖壓滑塊 20‧‧‧Pressing slider
21‧‧‧導引輪 21‧‧‧ Guide wheel
30‧‧‧中央導柱 30‧‧‧Central Guide Column
40‧‧‧邊緣導柱 40‧‧‧Edge guide post
50‧‧‧垂直位移模組 50‧‧‧Vertical displacement module
52‧‧‧偏心軸 52‧‧‧Eccentric shaft
53‧‧‧軸孔 53‧‧‧Axis hole
60‧‧‧作業空間 60‧‧‧Work space
70‧‧‧殼體 70‧‧‧shell
71‧‧‧定位柱 71‧‧‧Positioning column
711‧‧‧導引側壁 711‧‧‧ Guided sidewall
Claims (8)
一加工平台；
一對應設置於該加工平台上的沖壓滑塊，該沖壓滑塊與該加工平台形成一置放該模具及該加工件的作業空間；
一連接於該沖壓滑塊之一中心位置的中央導柱；
複數對稱連接於該沖壓滑塊之一邊緣位置的邊緣導柱；及
一控制該沖壓滑塊進行垂直位移的垂直位移模組，對應連接該中央導柱及該些邊緣導柱，以帶動該沖壓滑塊進行垂直位移，進而於該作業空間配合該模具對該加工件進行對應加工。A multi-point balanced punching mechanism for processing a workpiece with a mold, the multi-point balanced punching mechanism comprising:
a processing platform;
Corresponding to a punching slider disposed on the processing platform, the punching slider and the processing platform form a working space for placing the mold and the workpiece;
a central guide post connected to a central position of the punching slider;
a plurality of edge guide columns symmetrically connected to an edge of the punching slider; and a vertical displacement module for controlling the vertical displacement of the punching slider, correspondingly connecting the central guide post and the edge guide pillars to drive the stamping The slider is vertically displaced, and the workpiece is processed correspondingly to the working space in the working space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102208836U TWM460770U (en) | 2013-05-13 | 2013-05-13 | Multi-point balanced press mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102208836U TWM460770U (en) | 2013-05-13 | 2013-05-13 | Multi-point balanced press mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TWM460770U true TWM460770U (en) | 2013-09-01 |
Family
ID=49628417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW102208836U TWM460770U (en) | 2013-05-13 | 2013-05-13 | Multi-point balanced press mechanism |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWM460770U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI581954B (en) * | 2016-12-20 | 2017-05-11 | 金豐機器工業股份有限公司 | Puncher with an automatic adjusting balancer |
| TWI601634B (en) * | 2017-02-08 | 2017-10-11 | 金豐機器工業股份有限公司 | Puncher with an automatic adjusting balancer |
| CN108263017A (en) * | 2017-01-03 | 2018-07-10 | 金丰机器工业股份有限公司 | Has the punching machine of automatic adjustable balance device |
| CN108263018A (en) * | 2017-01-03 | 2018-07-10 | 金丰机器工业股份有限公司 | Has the punching machine of automatic adjustable balance device |
| CN108454158A (en) * | 2017-02-17 | 2018-08-28 | 金丰机器工业股份有限公司 | Has the punching machine of automatic adjustable balance device |
-
2013
- 2013-05-13 TW TW102208836U patent/TWM460770U/en not_active IP Right Cessation
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI581954B (en) * | 2016-12-20 | 2017-05-11 | 金豐機器工業股份有限公司 | Puncher with an automatic adjusting balancer |
| CN108263017A (en) * | 2017-01-03 | 2018-07-10 | 金丰机器工业股份有限公司 | Has the punching machine of automatic adjustable balance device |
| CN108263018A (en) * | 2017-01-03 | 2018-07-10 | 金丰机器工业股份有限公司 | Has the punching machine of automatic adjustable balance device |
| TWI601634B (en) * | 2017-02-08 | 2017-10-11 | 金豐機器工業股份有限公司 | Puncher with an automatic adjusting balancer |
| CN108454158A (en) * | 2017-02-17 | 2018-08-28 | 金丰机器工业股份有限公司 | Has the punching machine of automatic adjustable balance device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4K | Annulment or lapse of a utility model due to non-payment of fees |