CN203919537U - Multi-station injection mould - Google Patents
Multi-station injection mould Download PDFInfo
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- CN203919537U CN203919537U CN201420202404.4U CN201420202404U CN203919537U CN 203919537 U CN203919537 U CN 203919537U CN 201420202404 U CN201420202404 U CN 201420202404U CN 203919537 U CN203919537 U CN 203919537U
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Abstract
The utility model discloses multi-station injection mould, comprise dynamic model and cover half, in dynamic model, be provided with the first ejector retainner plate being slidably matched along opening and closing mould direction, the below of the first ejector retainner plate is the base plate of dynamic model, described base plate Shang Shuzhuan axis mechanism, this axis mechanism has the rotation central axis of an extended dynamic model; On the land area of described dynamic model, have a holding tank, accommodate a rotating disk by rotation central axis driven rotary in this holding tank, rotating disk is provided with at least one dynamic model die cavity; Described rotation central axis is slidably set with a driven gear, and this driven gear engages with a driving gear, and driving gear drives rotation through a driving mechanism; Described in one of them dynamic model die cavity under be provided with the ejector pin mechanism for ejecting moulding, the land area of described cover half is provided with at least two cover half die cavities that mate with dynamic model die cavity.The utility model is simple and reliable for structure, and the rotation of rotating disk turns to constant, and molding cycle is short.
Description
Technical field
The utility model relates to injection forming mold, is specifically related to multi-station injection mould.
Background technology
Mostly being front mould at multi-color injection molded forming machine on the market fixes, rear mold disposes station dial, and this kind of injection moulding machine is only applicable to the injection mo(u)lding of the identical polychrome product of rear model cavity, all discrepant multi-color injection molded for front and back model cavity, as interlayer injection mo(u)lding, completely helpless.
Generally adopt the mode of center of turntable rotation to solve the discrepant multicolour forming of front and back model cavity both at home and abroad, each different die cavity is set on rotating disk as required, it is the design of rotating mechanism that the core turning is held in the palm at center, at present modal is to adopt external rotating mechanism, but mostly be on the market two station mechanisms of Rotate 180 degree, two station mechanisms of spending compared with every station rotary 180 due to multiple-station rotation mechanism (at least three stations), its positioning difficulty and precision are higher, its action cycle is more complicated, so multistation holder rotation mechanism is on the market comparatively rare.Simultaneously because external multiple-station rotation assembly attachment component is more, as external driving mechanism, servo-drive system, so that on the high side, complex structure and specification are more single, a rotating mechanism can not meet the use of most of multi-station molds.
In addition, the rotating mechanism of the existing rotation that realizes rotating disk generally adopts tooth bar link gear, rackwork stroke is limited, therefore this kind of mechanical feature is reciprocation type motion, every two stations that are greater than, all can exist one to reverse reseting procedure, and this process will extend the molding cycle of product to a certain extent, make individual product inconsistent cool time in mould, thereby have different cubical contraction.
Utility model content
In order to overcome the deficiencies in the prior art, the purpose of this utility model is to provide multi-station injection mould, and it is simple and reliable for structure, and the rotation of rotating disk turns to constant, and molding cycle is short.
The purpose of this utility model adopts following technical scheme to realize:
Multi-station injection mould, comprise dynamic model and cover half, in dynamic model, be provided with the first ejector retainner plate being slidably matched along opening and closing mould direction, the below of the first ejector retainner plate is the base plate of dynamic model, on described base plate, pivot is equipped with along the telescopic axis of opening and closing mould direction mechanism, and this axis mechanism has the rotation central axis of an extended dynamic model; On the land area of described dynamic model, have a holding tank, accommodate a rotating disk by rotation central axis driven rotary in this holding tank, rotating disk is provided with at least one dynamic model die cavity; Described rotation central axis is slidably set with a driven gear, and this driven gear engages with a driving gear, and driving gear drives rotation through a driving mechanism; Described in one of them dynamic model die cavity under be provided with the ejector pin mechanism for ejecting moulding, the land area of described cover half is provided with at least two cover half die cavities that mate with dynamic model die cavity, each cover half die cavity is uniformly distributed centered by rotation central axis; The periphery wall of described rotation central axis is fixed with at least two straight keys, and the gear hole inwall of described driven gear has for corresponding at least two keyways that insert of straight key.
Preferably, described driving mechanism comprises screw rod and inner screw sheath, and driving gear fixed cover is loaded on inner screw sheath, inner screw sheath coordinates with screw flight, the lower end of screw rod is fixed on the first ejector retainner plate, and the top, lower end of the first ejector retainner plate is pressed with a top rod, and this top rod stretches out through after base plate.
Preferably, described driving gear is loaded on inner screw sheath through one first taper roll bearing fixed cover, and dynamic model is fixed in the outer ring of the first taper roll bearing, and the inner ring of the first taper roll bearing is fixed on inner screw sheath outer wall.
Preferably, described axis mechanism comprises the first oil cylinder, shaft coupling and described rotation central axis, and the first oil cylinder is fixed on described base plate, and the piston rod of the first oil cylinder and one end of shaft coupling are fixed, the other end of shaft coupling and the lower end of rotation central axis are fixed, and the center of rotating disk is fixed in the upper end of rotation central axis.
Preferably, the piston rod upper end of described the first oil cylinder is provided with the first stopper section, the lower end of described rotation central axis is provided with the second stopper section, described shaft coupling comprises hollow housing and is positioned at the first thrust roller bearing of this hollow housing, the second thrust roller bearing, the inner ring of the first thrust roller bearing is fixed on the lower wall of the second stopper section, the upper wall of the first stopper section is fixed in the outer ring of the first thrust roller bearing, the lower wall of the first stopper section is fixed on the diapire of hollow housing, the inner ring of the second thrust roller bearing is fixed on the upper wall of the second stopper section, the roof of hollow housing is fixed in the outer ring of the second thrust roller bearing.
Preferably, described ejector pin mechanism comprises the second oil cylinder, the second ejector retainner plate, thimble and ejector sleeve, described the second oil cylinder is fixed on dynamic model, the piston rod of the second oil cylinder stretches out and is fixedly connected with the second ejector retainner plate along die sinking direction, described ejector sleeve is placed on outside thimble, the lower end of thimble is connected with the second ejector pin plate elastic, and the upper end of thimble is towards dynamic model die cavity described in one of them.
Preferably, described driven gear is fixed on dynamic model through one second taper roll bearing, and dynamic model is fixed in the outer ring of the second taper roll bearing, and the inner ring of the second taper roll bearing is fixed on the end face of driven gear.
Compared to existing technology, the beneficial effects of the utility model are:
(1) rotation central axis by axis mechanism of the present utility model ejects rotating disk from holding tank, now, straight key enters keyway, under rotation central axis drives the rotation at driven gear, interlock is rotated, and driven gear will drive driven gear to rotate in the situation that drive driving gear to rotate by driving mechanism, therefore the dynamic model die cavity on rotating disk can turn to the position of aiming at one of them cover half die cavity; Under the drive of axis mechanism, when rotating disk resets and is contained in while carrying out matched moulds in holding tank, rotation central axis is retracted, straight key is deviate from from keyway, even if now driving mechanism still drives driving gear rotation, driven gear also will dally, realize rotating disk and turn to coherent rotation along same, the molding cycle that prevents the prolongation product that brings of reversion, makes individual product inconsistent cool time in mould, causes existing the problem of different cubical contraction.
(2) in the time that outside injection machine ejection system drives top rod to drive the first ejector retainner plate to slide, to order about inner screw sheath rotation by screw rod, thereby pass through driving gear, driven gear drives turntable rotation, axis mechanism is to the expanding-contracting action of rotating disk and rotarily driving also by rotation central axis, shaft coupling and the first oil cylinder are realized, therefore, the rotation of rotating disk is by simply, mechanical mechanism is realized reliably, cost is low, the distance size ejecting by the first ejector retainner plate is set, rotational angle that just can relative set rotating disk, be applicable to three more than station, active and inactive mold die cavity is discrepant multi-color injection molded moulding all, due to the engagement of driven gear and driving gear and the engagement of inner screw sheath and screw rod, the rotational angle of rotating disk will accurately be located, and, due to rotation central axis after retraction driven gear will be not can driven rotary middle shaft rotation, so the reversion of driving gear action will can not drive to rotating disk when the first ejector retainner plate resets, prevent rotating disk reversion.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is the dynamic model of the utility model multi-station injection mould structural representation in the time that rotating disk fits into holding tank;
Fig. 2 is the dynamic model of the utility model multi-station injection mould structural representation in the time that rotating disk is rotated axis and ejects;
Fig. 3 is the A place enlarged diagram in Fig. 2;
Fig. 4 is the B place enlarged diagram in Fig. 2;
Fig. 5 is the C place enlarged diagram in Fig. 2;
Fig. 6 is the fixed mould structure schematic diagram that the utility model multi-station injection mould is overlooked from cover half die cavity.
In figure: 1, dynamic model; 11, holding tank; 2, cover half; 21, cover half die cavity; 3, the first ejector retainner plate; 4, base plate; 5, axis mechanism; 51, rotation central axis; 511, the second stopper section; 52, the first oil cylinder; 521, the first stopper section; 53, shaft coupling; 531, hollow housing; 532, the first thrust roller bearing; 533, the second thrust roller bearing; 6, rotating disk; 61, dynamic model die cavity; 7, driven gear; 71, keyway; 8, driving gear; 9, driving mechanism; 92, screw rod; 93, inner screw sheath; 10, ejector pin mechanism; 101, the second oil cylinder; 102, the second ejector retainner plate; 103, thimble; 104, ejector sleeve; 12, straight key; 13, top rod; 14, the first taper roll bearing; 15, the second taper roll bearing.
Detailed description of the invention
Multi-station injection mould as shown in Fig. 1, Fig. 6, comprise dynamic model 1 and cover half 2, in dynamic model 1, be provided with the first ejector retainner plate 3 being slidably matched along opening and closing mould direction, the below of the first ejector retainner plate 3 is the base plate 4 of dynamic model 1, on base plate 4, pivot is equipped with along the telescopic axis of opening and closing mould direction mechanism 5, and this axis mechanism 5 has the rotation central axis 51 of an extended dynamic model 1; As shown in Figure 2, have a holding tank 11 on the land area of dynamic model 1, accommodate a rotating disk 6 by rotation central axis 51 driven rotary in this holding tank 11, rotating disk 6 is provided with at least one dynamic model die cavity 61; Rotation central axis 51 is slidably set with a driven gear 7, and this driven gear 7 engages with a driving gear 8, and driving gear 8 drives rotation through a driving mechanism 9; As shown in Figure 1, under one of them dynamic model die cavity 61, be provided with the ejector pin mechanism 10 for ejecting moulding, as shown in Figure 6, the land area of cover half 2 is provided with at least two cover half die cavities 21 that mate with dynamic model die cavity 61, and each cover half die cavity 21 is uniformly distributed centered by rotation central axis 51; As Figure 1 and Figure 4, the periphery wall of rotation central axis 51 is fixed with at least two straight keys 12, and the gear hole inwall of driven gear 7 has for corresponding at least two keyways 71 that insert of straight key 12.The quantity of straight key 12 and keyway 71 can arrange arbitrarily according to the needs of fitment stability.
Quantity and the position of straight key 12 and keyway 71, can carry out corresponding setting according to the quantity of dynamic model die cavity 61, cover half die cavity 21 and position, and to realize rotation central axis 51 after once having rotated, in the time that rotation central axis 51 ejects, straight key 12 can accurately insert keyway 71 at any time.As shown in the figure, this example is that cover half die cavity 21 and dynamic model die cavity 61 are all made as to three, and their position can be corresponding one by one after rotating disk 6 rotates, and matched moulds, coupling will form respectively the first die cavity, the second die cavity and the 3rd die cavity after coordinating, the serialization that is beneficial to moulding is produced, improving production efficiency.
As shown in Figure 3, this routine driving mechanism 9 comprises screw rod 92 and inner screw sheath 93, driving gear 8 fixed covers are loaded on inner screw sheath 93, inner screw sheath 93 and screw rod 92 threaded engagement, the lower end of screw rod 92 is fixed on the first ejector retainner plate 3, the top, lower end of the first ejector retainner plate 3 is pressed with a top rod 13, and caping rod 13 stretches out through after base plate 4.Top rod 13 is configured to the ejecting mechanism in outside injection machine ejection system, and base plate 4 correspondences offer at least one through hole passing for top rod 13, and lead to the hole site is corresponding with top rod 13 positions.Also the top rod 13, being fixed in injection machine ejection system directly withstands on the first ejector retainner plate 3 through base plate 4.Press after the first ejector retainner plate 3 on rod 13 tops in top, the first ejector retainner plate 3 is driven on screw rod 92 and move, and in the process of moving on screw rod 92, will drive inner screw sheath 93 to rotate, thereby drive driving gear 8 to rotate.It will be appreciated by persons skilled in the art that driving mechanism 9 can be also other revolving power mechanism that can drive driving gear 8 to rotate.
Smooth and easy for driving gear 8 is rotated, the inner ring that dynamic model 1, the first taper roll bearing 14 is fixed in the outer ring that driving gear 8 is loaded on inner screw sheath 93, the first taper roll bearings 14 through one first taper roll bearing 14 fixed covers is fixed on inner screw sheath 93 outer walls.The first taper roll bearing 14 can bear axial force and the radial load that screw rod 92 gives.
As shown in Figure 4, this routine axis mechanism 5 comprises the first oil cylinder 52, shaft coupling 53 and above-mentioned rotation central axis 51, the first oil cylinder 52 is fixed on base plate 4, one end of the piston rod of the first oil cylinder 52 and shaft coupling 53 is fixed, the lower end of the other end of shaft coupling 53 and rotation central axis 51 is fixed, and the center of rotating disk 6 is fixed in the upper end of rotation central axis 51.After the piston rod of the first oil cylinder 52 ejects, through the connection of shaft coupling 53, rotation central axis 51 also will eject rotating disk 6.After driven gear 7 is by driving gear 8 driven rotary, the in the situation that of in straight key 12 inserts keyway 71, rotation central axis 51 also will be by driven gear 7 driven rotary, and under the effect of shaft coupling 53, rotation central axis 51 rotates with respect to the piston rod of the first oil cylinder 52.
As shown in Figure 5, wherein, the piston rod upper end of the first oil cylinder 52 is provided with the first stopper section 521, the lower end of rotation central axis 51 is provided with the second stopper section 511, this routine shaft coupling 53 comprises hollow housing 531 and is positioned at the first thrust roller bearing 532 of this hollow housing 531, the second thrust roller bearing 533, the inner ring of the first thrust roller bearing 532 is fixed on the lower wall of the second stopper section 511, the upper wall of the first stopper section 521 is fixed in the outer ring of the first thrust roller bearing 532, the lower wall of the first stopper section 521 is fixed on the diapire of hollow housing 531, the inner ring of the second thrust roller bearing 533 is fixed on the upper wall of the second stopper section 511, the roof of hollow housing 531 is fixed in the outer ring of the second thrust roller bearing 533.
As shown in Figure 1, for ease of the moulding ejection device of last station, ejector pin mechanism 10 comprises the second oil cylinder 101, the second ejector retainner plate 102, thimble 103 and ejector sleeve 104, the second oil cylinder 101 is fixed on dynamic model 1, the piston rod of the second oil cylinder 101 stretches out and is fixedly connected with the second ejector retainner plate 102 along die sinking direction, ejector sleeve 104 is placed on outside thimble 103, and the lower end of thimble 103 is connected with the second ejector retainner plate 102 elasticity, and the upper end of thimble 103 is towards one of them dynamic model die cavity 61.The lower end of thimble 103 can be realized with the elasticity of the second ejector retainner plate 102 and being connected by spring.
As shown in Figure 4, for making the rotation of driven gear 7 more smooth and easy, driven gear 7 is fixed on dynamic model 1 through one second taper roll bearing 15, and dynamic model is fixed in the outer ring of the second taper roll bearing 15, and the inner ring of the second taper roll bearing 15 is fixed on the end face of driven gear 7.The second taper roll bearing 15 can bear axial force and the radial load that rotation central axis gives.
The injection moulding flow process of this multi-station injection mould:
1. mould matched moulds, melt plastic cement is injected the first die cavity cooling forming by injection machine;
2. mould die sinking, active and inactive mold is opened, and dynamic model retreats to after certain stroke, and the first hydraulic oil cylinder driving rotation central axis drives moving rotating disk to release, and in this process, the straight key being fixed on rotation central axis inserts in the keyway of driven gear, and driven gear and rotating shaft form linkage structure;
3. injection machine drives the first ejector retainner plate by top rod and drives screw rod to release, due to the engagement of screw rod and inner screw sheath internal helicoid tooth, the axially-movable of screw rod die sinking direction is converted into rotatablely moving of inner screw sheath, the drive driving gear that rotatablely moves of inner screw sheath, driven tooth driven rotary axis and dial rotation under the mating reaction of straight key and keyway, realize product and gone to by the first die cavity the action of the second die cavity;
4. the first hydraulic oil cylinder driving rotation central axis reset, rotating disk reset, and the straight key on rotation central axis departs from keyway, mould matched moulds, and the first ejector retainner plate resets, screw reset, and screw rod drives driving gear to rotate, driven gear idle running;
5. melt plastic cement is injected mould the second die cavity cooling forming by adapted to injection system;
6. mould die sinking, identical with above-mentioned the 2nd, the 3rd step action, product forwards the 3rd die cavity to by the second die cavity;
7. mould matched moulds resets, and melt plastic cement is injected mould the 3rd die cavity cooling forming by adapted to injection system
8. mould die sinking, second hydraulic oil cylinder driving the second ejector retainner plate under the 3rd die cavity drives thimble to eject moulding.
9. mould matched moulds resets and carries out the injection mo(u)lding in next cycle.
Above-mentioned embodiment is only preferred embodiment of the present utility model; the scope that can not limit with this utility model protection, the variation of any unsubstantiality that those skilled in the art does on basis of the present utility model and replacement all belong to the utility model scope required for protection.
Claims (7)
1. multi-station injection mould, comprise dynamic model and cover half, in dynamic model, be provided with the first ejector retainner plate being slidably matched along opening and closing mould direction, the below of the first ejector retainner plate is the base plate of dynamic model, it is characterized in that: on described base plate, pivot is equipped with along the telescopic axis of opening and closing mould direction mechanism, and this axis mechanism has the rotation central axis of an extended dynamic model; On the land area of described dynamic model, have a holding tank, accommodate a rotating disk by rotation central axis driven rotary in this holding tank, rotating disk is provided with at least one dynamic model die cavity; Described rotation central axis is slidably set with a driven gear, and this driven gear engages with a driving gear, and driving gear drives rotation through a driving mechanism; Described in one of them dynamic model die cavity under be provided with the ejector pin mechanism for ejecting moulding, the land area of described cover half is provided with at least two cover half die cavities that mate with dynamic model die cavity, each cover half die cavity is uniformly distributed centered by rotation central axis; The periphery wall of described rotation central axis is fixed with at least two straight keys, and the gear hole inwall of described driven gear has for corresponding at least two keyways that insert of straight key.
2. multi-station injection mould according to claim 1, it is characterized in that: described driving mechanism comprises screw rod and inner screw sheath, driving gear fixed cover is loaded on inner screw sheath, inner screw sheath coordinates with screw flight, the lower end of screw rod is fixed on the first ejector retainner plate, the lower end of the first ejector retainner plate is fixed with a top rod, and this top rod stretches out through after base plate.
3. multi-station injection mould according to claim 2, it is characterized in that: described driving gear is loaded on inner screw sheath through one first taper roll bearing fixed cover, dynamic model is fixed in the outer ring of the first taper roll bearing, and the inner ring of the first taper roll bearing is fixed on inner screw sheath outer wall.
4. multi-station injection mould according to claim 1, it is characterized in that: described axis mechanism comprises the first oil cylinder, shaft coupling and described rotation central axis, the first oil cylinder is fixed on described base plate, the piston rod of the first oil cylinder and one end of shaft coupling are fixed, the other end of shaft coupling and the lower end of rotation central axis are fixed, and the center of rotating disk is fixed in the upper end of rotation central axis.
5. multi-station injection mould according to claim 4, it is characterized in that: the piston rod upper end of described the first oil cylinder is provided with the first stopper section, the lower end of described rotation central axis is provided with the second stopper section, described shaft coupling comprises hollow housing and is positioned at the first thrust roller bearing of this hollow housing, the second thrust roller bearing, the inner ring of the first thrust roller bearing is fixed on the lower wall of the second stopper section, the upper wall of the first stopper section is fixed in the outer ring of the first thrust roller bearing, the lower wall of the first stopper section is fixed on the diapire of hollow housing, the inner ring of the second thrust roller bearing is fixed on the upper wall of the second stopper section, the roof of hollow housing is fixed in the outer ring of the second thrust roller bearing.
6. multi-station injection mould according to claim 1, it is characterized in that: described ejector pin mechanism comprises the second oil cylinder, the second ejector retainner plate, thimble and ejector sleeve, described the second oil cylinder is fixed on dynamic model, the piston rod of the second oil cylinder stretches out and is fixedly connected with the second ejector retainner plate along die sinking direction, described ejector sleeve is placed on outside thimble, the lower end of thimble is connected with the second ejector pin plate elastic, and the upper end of thimble is towards dynamic model die cavity described in one of them.
7. according to the multi-station injection mould described in claim 1～6 any one, it is characterized in that: described driven gear is fixed on dynamic model through one second taper roll bearing, dynamic model is fixed in the outer ring of the second taper roll bearing, and the inner ring of the second taper roll bearing is fixed on the end face of driven gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420202404.4U CN203919537U (en) | 2014-04-23 | 2014-04-23 | Multi-station injection mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420202404.4U CN203919537U (en) | 2014-04-23 | 2014-04-23 | Multi-station injection mould |
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| Publication Number | Publication Date |
|---|---|
| CN203919537U true CN203919537U (en) | 2014-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420202404.4U Withdrawn - After Issue CN203919537U (en) | 2014-04-23 | 2014-04-23 | Multi-station injection mould |
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| CN (1) | CN203919537U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950143A (en) * | 2014-04-23 | 2014-07-30 | 广州导新模具注塑有限公司 | Multi-station injection molding mold |
| CN105965762A (en) * | 2016-05-31 | 2016-09-28 | 芜湖市万华塑料制品有限公司 | High-efficiency injection mold |
| WO2017016510A1 (en) * | 2015-07-29 | 2017-02-02 | 现代精密塑胶模具（深圳）有限公司 | Injection moulding machine |
| CN107538670A (en) * | 2016-06-28 | 2018-01-05 | 英济股份有限公司 | Ejection formation control system |
| CN107538681A (en) * | 2016-06-28 | 2018-01-05 | 英济股份有限公司 | Ejection formation mechanism |
| CN110614326A (en) * | 2019-10-12 | 2019-12-27 | 广东泰吉鑫机械有限公司 | Novel double-ejector rod mechanism for die spotting machine |
| CN110641765A (en) * | 2019-09-25 | 2020-01-03 | 安徽科达机电有限公司 | Building materials packing is with rotary platform |
-
2014
- 2014-04-23 CN CN201420202404.4U patent/CN203919537U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103950143A (en) * | 2014-04-23 | 2014-07-30 | 广州导新模具注塑有限公司 | Multi-station injection molding mold |
| WO2017016510A1 (en) * | 2015-07-29 | 2017-02-02 | 现代精密塑胶模具（深圳）有限公司 | Injection moulding machine |
| CN105965762A (en) * | 2016-05-31 | 2016-09-28 | 芜湖市万华塑料制品有限公司 | High-efficiency injection mold |
| CN107538670A (en) * | 2016-06-28 | 2018-01-05 | 英济股份有限公司 | Ejection formation control system |
| CN107538681A (en) * | 2016-06-28 | 2018-01-05 | 英济股份有限公司 | Ejection formation mechanism |
| CN110641765A (en) * | 2019-09-25 | 2020-01-03 | 安徽科达机电有限公司 | Building materials packing is with rotary platform |
| CN110641765B (en) * | 2019-09-25 | 2021-11-12 | 安徽科达机电有限公司 | Building materials packing is with rotary platform |
| CN110614326A (en) * | 2019-10-12 | 2019-12-27 | 广东泰吉鑫机械有限公司 | Novel double-ejector rod mechanism for die spotting machine |
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Granted publication date: 20141105 Effective date of abandoning: 20170111 |
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