CN112846092A - Sand core pressing machine device - Google Patents
Sand core pressing machine device Download PDFInfo
- Publication number
- CN112846092A CN112846092A CN202011600658.8A CN202011600658A CN112846092A CN 112846092 A CN112846092 A CN 112846092A CN 202011600658 A CN202011600658 A CN 202011600658A CN 112846092 A CN112846092 A CN 112846092A
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- movable
- sand core
- base
- pair
- jig
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C23/00—Tools; Devices not mentioned before for moulding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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Abstract
The invention provides a sand core pressing machine device which comprises a rack, wherein a base is arranged below the rack, a cross beam positioned above the base is arranged on the rack, a movable vehicle platform is arranged on the base in a sliding manner, a plurality of groups of upper positioning mechanisms corresponding to the base are arranged on the cross beam, a plurality of groups of lower locking mechanisms used for positioning a lower jig are arranged on the movable vehicle platform, an upper locking mechanism used for positioning an upper jig is arranged below the upper positioning mechanism, and a plurality of sand cores to be combined are accommodated in the lower jig; and the base is internally provided with a lifting mechanism for lifting the lower fixture. The invention discloses a sand core pressing machine device which is simple and convenient to operate and controllable in core pressing time.
Description
Technical Field
The invention relates to the field of mechanical manufacturing and processing, in particular to a sand core pressing machine device.
Background
In the prior art, the box body is a core component commonly used by passenger cars and engineering machinery, the complex shape of the box body can not be separated from a sand core in casting production, the requirements of manufacturing high-quality box bodies on the sand cores formed by the box body are different, and the box body type sand core assembly is a method for avoiding glue separation and air explosion in the box body production pouring process.
In the prior art, manual operation is carried out in the assembly of box type sand cores, the force application and pressing are directly carried out on the sand cores, generally, viscose is pre-coated between the adjacent sand cores, then manual pressing is carried out on the sand cores, but the pressing operation is not convenient enough, and the sand cores are not convenient to position and limit. The quality is poor easily to lead to in the process of pouring, causes extravagantly and consumes the manual work.
Therefore, a core pressing machine device for the sand core, which is simple and convenient to operate and controllable in core pressing time, needs to be researched.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides the sand core pressing machine device which is simple and convenient to operate and controllable in core pressing time.
In order to achieve the purpose, the invention adopts the technical scheme that: a sand core pressing machine device comprises a rack, wherein a base is arranged below the rack, a cross beam positioned above the base is arranged on the rack, a movable vehicle platform is arranged on the base in a sliding manner, a plurality of groups of upper positioning mechanisms corresponding to the base are arranged on the cross beam, a plurality of groups of lower locking mechanisms used for positioning a lower jig are arranged on the movable vehicle platform, an upper locking mechanism used for positioning the upper jig is arranged below the upper positioning mechanisms, and a plurality of sand cores to be combined are accommodated in the lower jig; and the base is internally provided with a lifting mechanism for lifting the lower fixture. But not limited to this, in another alternative embodiment, the lower fixture is fixed, and the cross beam is provided with a pressing mechanism for driving the upper fixture to press down.
In a preferred embodiment of the present invention, the base is provided with a feeding area and a processing area, the feeding area and the processing area are respectively provided with at least one pair of first movable slide rails and at least one pair of second movable slide rails, which are movably butted with each other, and the movable carriage is slidably disposed on the first movable slide rails and the second movable slide rails.
In a preferred embodiment of the present invention, a lifting mechanism is disposed in the base below the processing area, a lower base plate is disposed on the lifting mechanism in a driving manner, and a second movable slide rail is disposed on the lower base plate. In a more preferred embodiment, the lifting mechanism is a lifting cylinder.
In a preferred embodiment of the present invention, a push-pull mechanism drivingly connected to the mobile cart is further disposed on one side of the lower base plate; the push-pull track of the push-pull mechanism is consistent with the sliding track direction of the first movable sliding rail and the second movable sliding rail. In a more preferred embodiment, the push-pull mechanism is a movable cylinder. More specifically, the lower part of the lower bottom plate is provided with a plurality of guide rods movably arranged in the base in a penetrating way.
In a preferred embodiment of the present invention, the lower portion of the movable cart bed is provided with a plurality of pairs of pulley blocks slidably disposed on the pair of movable slide rails i.e. the pair of movable slide rails ii.
In a preferred embodiment of the present invention, the pulley block includes a pair of pulleys arranged in a longitudinal direction, and the pair of pulleys are slidably clamped on the upper and lower sides of the first movable sliding rail.
In a preferred embodiment of the present invention, the lower locking mechanism or the upper locking mechanism includes a pair of locking hooks capable of swinging open and closed relative to each other; the locking hook is pivotally connected to the upper part of the movable trolley platform or the lower part of the upper positioning mechanism through a rotating shaft; each pair of tight lock hooks is provided with a connecting rod in a penetrating way, and the end part of the connecting rod is provided with a tight lock nut for limiting.
In a preferred embodiment of the present invention, the upper positioning mechanism includes an upper base plate disposed on the cross beam, an upper shaping plate is movably engaged below the upper base plate through a pair of telescopic limiting rods, and a plurality of elastic abutting portions are disposed between the upper base plate and the upper shaping plate.
In a preferred embodiment of the present invention, the elastic abutting portion includes an elastic seat disposed at a lower portion of the upper base plate, a longitudinally retractable contact rod is movably embedded in the elastic seat, one end of the contact rod is elastically locked in the elastic seat, and the other end of the contact rod is inserted into the elastic seat and then corresponds to the upper shaping plate.
The invention also aims to provide a sand core press-mounting method of the sand core press-mounting machine device, which comprises the following steps:
locking a lower mold jig on the upper part of a mobile vehicle platform through a lower locking mechanism, and locking an upper mold jig on the lower part of an upper mold plate of an upper positioning mechanism through an upper locking mechanism;
placing a plurality of sand cores into a lower mold jig, and arranging viscose glue for bonding between the adjacent sand cores;
step three, transferring the mobile vehicle platform from the feeding area to the processing area through a push-pull mechanism;
driving a lower jig of the movable trolley platform to ascend through a lifting mechanism to be in butt joint and press fit with an upper jig, and abutting and limiting through an elastic abutting part;
step five, maintaining the pressure of the pressed lower-type jig and the pressed upper-type jig, wherein the pressure maintaining time corresponds to the time required by the processing requirement;
and step six, after the pressing is finished, reversing operation to realize material returning, and sequentially and circularly performing core pressing combination operation of the sand core.
The invention solves the defects existing in the technical background, and has the beneficial technical effects that:
the invention discloses a sand core pressing machine device which is simple and convenient to operate and controllable in core pressing time.
First, through locking mechanism and locking mechanism lock the cope match tool of production usefulness and lower type tool on removal platform and upper portion positioning mechanism respectively down, be convenient for change more is favorable to adapting to the psammitolite of production different grade type.
And secondly, a movable trolley platform and an upper positioning mechanism which can move relatively are arranged on the frame, so that the relative opening and closing operation of the upper mold jig and the lower mold jig is realized, and the convenient and fast sand core pressing operation is realized.
And thirdly, the movable trolley platform can reciprocate between the feeding area and the processing area under the driving of the push-pull mechanism, the transfer and transmission between the rails are realized through the sectional rails, and the independent lifting and displacement of the lifting mechanism to the movable trolley platform in the processing area are not influenced.
And fourthly, the upper base plate is provided with an elastic abutting part, the combination of the contact rod and the spring seat in the elastic abutting part has the effect of reducing buffering, the impact damage of mechanical stress when the upper mold jig and the lower mold jig are pressed is reduced, the mechanical impact force of the sand core to be pressed is reduced, the damage of the sand core caused by mechanical stress impact is prevented, and the flexible pressing performance of the sand core pressing is improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
Fig. 1 is a side view schematic illustration of a sand core press apparatus according to a preferred embodiment of the present invention;
fig. 2 is a schematic side view of a sand core press apparatus according to a preferred embodiment of the present invention;
fig. 3 is a schematic elevation view of a sand core press apparatus of a preferred embodiment of the present invention;
FIG. 4 is an enlarged schematic view of portion A of FIG. 1 in accordance with a preferred embodiment of the present invention;
FIG. 5 is an enlarged schematic view of portion B of FIG. 3 in accordance with a preferred embodiment of the present invention;
the device comprises a frame 1, a base 11, a crossbeam 12, a track seat 13, a lifting mechanism 2, a lower bottom plate 21, a guide rod 22, a first movable sliding rail 231, a second movable sliding rail 232, a push-pull mechanism 3, a 4-movable vehicle platform 41, a sliding seat 411, a pulley 5, a lower fastening locking mechanism 51, a fastening locking nut 52, a fastening locking hook 53, a connecting rod 531, a shaft coupling 532, a shaft seat 54, a rotating shaft 6, an upper positioning mechanism 61, an upper bottom plate 62, an elastic abutting part 620, an elastic seat 621, a contact rod 63, an elastic limiting rod 64, an upper shaping plate 65, an upper fastening mechanism and an 8-lower type jig.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings and examples, which are simplified schematic drawings and illustrate only the basic structure of the invention in a schematic manner, and thus show only the constituents relevant to the invention.
It should be noted that, if directional indications (such as up, down, bottom, top, etc.) are involved in the embodiment of the present invention, the directional indications are only used for explaining the relative position relationship, motion situation, etc. of each component in a certain posture, and if the certain posture is changed, the directional indications are changed accordingly. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Unless expressly stated or limited otherwise, the terms "disposed," "connected," and "connected" are intended to be inclusive and mean, for example, that there may be a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 5, which is a preferred embodiment of the present invention, specifically, a sand core pressing machine device is provided, which includes a frame 1, a base 11 is disposed under the frame 1, a cross beam 12 located above the base 11 is disposed on the frame 1, a movable cart platform 4 is slidably disposed on the base 11, a plurality of sets of upper positioning mechanisms 6 corresponding to the base 11 are disposed on the cross beam 12, a plurality of sets of lower locking mechanisms 5 for positioning a lower fixture 8 are disposed on the movable cart platform 4, an upper locking mechanism 65 for positioning an upper fixture is disposed below the upper positioning mechanism 6, and a plurality of sand cores to be combined are accommodated in the lower fixture 8; the base 11 is internally provided with a lifting mechanism 2 for lifting the lower jig 8. The structure can realize that the lower mould jig 8 is locked on the upper part of the mobile vehicle platform 4 through the lower locking mechanism 5, and the upper mould jig is locked on the lower part of the upper mould plate 64 of the upper positioning mechanism 6 through the upper locking mechanism 65.
More specifically, the base 11 is provided with a feeding area and a processing area, the feeding area is provided with a rail seat 13, and the rail seat 13 is provided with at least one pair of first movable sliding rails 231. The lifting mechanism 2 is arranged in the base 11 below the machining area, the lifting mechanism 2 specifically adopts a jacking cylinder, the lifting mechanism 2 is provided with a lower bottom plate 21 in a driving mode, and the lower bottom plate 21 is provided with a second movable sliding rail 232. The first movable slide rail 231 and the second movable slide rail 232 are movable with each other, and the movable vehicle platform 4 is slidably disposed on the first movable slide rail 231 and the second movable slide rail 232 through the sliding seat 41. A push-pull mechanism 3 which is in driving connection with the movable trolley 4 is also arranged on one side of the lower bottom plate 21, and a movable cylinder is particularly adopted; the push-pull track of the push-pull mechanism 3 is consistent with the sliding track directions of the first movable slide rail 231 and the second movable slide rail 232, and the lower part of the lower bottom plate 21 is provided with a plurality of guide rods 22 movably penetrating through the base 11. The lower part of the moving vehicle platform 4 is provided with a plurality of pairs of pulley blocks which are arranged on a pair of first moving sliding rails 231 or a pair of second moving sliding rails 232 in a sliding manner, each pulley block comprises a pair of pulleys 411 which are arranged in a longitudinal direction, and the pair of pulleys 411 are clamped on the upper side and the lower side of the first moving sliding rail 231 in a sliding manner. By the cooperation of the slide rails and the push-pull mechanism 3, the movable trolley 4 can be transferred from the feeding area to the processing area or the movable trolley 4 can be transferred from the processing area to the feeding area by the push-pull mechanism 3. The transfer between the rails is realized by the sectional rails, and the independent lifting and displacement of the lifting mechanism 2 to the mobile vehicle platform 4 in the processing area are not influenced.
More specifically, the lower lock mechanism 5 or the upper lock mechanism 65 includes a pair of lock hooks 52 that can swing open and close with respect to each other; the tight locking hook 52 is pivotally connected to the upper part of the movable carriage 4 or the lower part of the upper positioning mechanism 6 through a rotating shaft 54; each pair of tight latch hooks 52 is provided with a connecting rod 53 in a penetrating way, and the end part of the connecting rod 53 is provided with a tight latch nut 51 for limiting; the link 53 is provided to the upper portion of the traveling carriage 4 or the lower portion of the upper template 64 through a coupling 531 and a shaft seat 532. The upper positioning mechanism 6 further comprises an upper base plate 61 arranged on the cross beam 12, an upper shaping plate 64 is movably jointed below the upper base plate 61 through a pair of telescopic limiting rods 63, and a plurality of elastic abutting parts 62 are arranged between the upper base plate 61 and the upper shaping plate 64. Furthermore, the elastic abutting portion 62 includes an elastic seat 620 disposed at the lower portion of the upper base plate 61, a contact rod 621 capable of longitudinally extending and retracting is movably embedded in the elastic seat 620, one end of the contact rod 621 is elastically locked in the elastic seat 620, and the other end of the contact rod 621 penetrates through the elastic seat 620 and then corresponds to the upper shaping plate 64. The lower locking mechanism 5 or the upper locking mechanism 65 is used for clamping the lower jig 8 or the upper jig, and the locking hook 52 can play a role in firmly tightening the jigs. And when the lower mold tool 8 of the movable vehicle platform 4 is driven by the lifting mechanism 2 to rise and is in butt joint and press fit with the upper mold tool, the elastic abutting part 62 abuts against and limits the position, so that the buffer effect is reduced, the impact damage of mechanical stress when the upper mold tool and the lower mold tool 8 are in press fit is reduced, and the impact damage to the sand core is reduced.
The embodiment also correspondingly discloses a sand core press-mounting method of the sand core press-mounting machine device, which comprises the following steps:
step one, locking a lower mold jig 8 on the upper part of a mobile vehicle platform 4 through a lower locking mechanism 5, and locking an upper mold jig on the lower part of an upper mold plate 64 of an upper positioning mechanism 6 through an upper locking mechanism 65;
secondly, placing a plurality of sand cores into the lower mold jig 8, and arranging viscose glue for bonding between the adjacent sand cores;
step three, transferring the movable trolley 4 from the feeding area to the processing area through the push-pull mechanism 3;
driving the lower fixture 8 of the movable trolley platform 4 to ascend through the lifting mechanism 2 to be in butt joint and press fit with the upper fixture, and abutting and limiting through the elastic abutting part 62;
step five, maintaining the pressure of the pressed lower-type jig 8 and the pressed upper-type jig, wherein the pressure maintaining time corresponds to the time required by the processing requirement;
and step six, after the pressing is finished, reversing operation to realize material returning, and sequentially and circularly performing core pressing combination operation of the sand core.
The working principle of the invention is as follows:
as shown in fig. 1 to 5, first, the lower jig 8 is locked to the upper portion of the movable bed 4 by the lower locking mechanism 5, and the upper jig is locked to the lower portion of the upper die plate 64 of the upper positioning mechanism 6 by the upper locking mechanism 65; then, placing a plurality of sand cores into a lower mold jig 8, and arranging viscose for bonding between the adjacent sand cores, wherein the viscose can be resin viscose; then the movable trolley 4 is transferred from the feeding area to the processing area through the push-pull mechanism 3; then the lower fixture 8 of the movable trolley platform 4 is driven to ascend through the lifting mechanism 2 to be butted and pressed with the upper fixture, and the elastic abutting part 62 abuts and limits the position; then, the pressed lower mold jig 8 and the pressed upper mold jig are subjected to pressure maintaining, and the pressure maintaining time corresponds to the time required by the processing requirement, so that the sand cores are tightly bonded together, the production efficiency is improved, more box sand cores are saved, and the practicability of the sand core pressing machine device is improved; and then, after the pressing is finished, the reverse operation is carried out to realize material returning, and the core pressing combination operation of the sand core is carried out in a circulating reciprocating mode in sequence. Through the process, the purposes of simple and convenient operation and controllable core pressing time are achieved.
The above embodiments are specific supports for the idea of the present invention, and the protection scope of the present invention is not limited thereby, and any equivalent changes or equivalent modifications made on the basis of the technical scheme according to the technical idea of the present invention still belong to the protection scope of the technical scheme of the present invention.
Claims (10)
1. The utility model provides a psammitolite pressure core machine device, includes the frame, be provided with the base under the frame, be provided with the crossbeam that is located the base top in the frame, its characterized in that: a movable vehicle platform is arranged on the base in a sliding mode, a plurality of groups of upper positioning mechanisms corresponding to the base are arranged on the cross beam, a plurality of groups of lower locking mechanisms used for positioning lower jigs are arranged on the movable vehicle platform, an upper locking mechanism used for positioning upper jigs is arranged below the upper positioning mechanisms, and a plurality of sand cores to be combined are contained in the lower jigs; and the base is internally provided with a lifting mechanism for lifting the lower fixture.
2. The sand core press apparatus of claim 1, wherein: the base is provided with a feeding area and a processing area, the feeding area and the processing area are respectively provided with at least one pair of movable sliding rails I and at least one pair of movable sliding rails II which are movably butted with each other, and the movable trolley platform is arranged on the movable sliding rails I and the movable sliding rails II in a sliding mode.
3. The sand core press apparatus of claim 2, wherein: and a lifting mechanism is arranged in the base below the processing area, a lower bottom plate is arranged on the lifting mechanism in a driving manner, and a second movable slide rail is arranged on the lower bottom plate.
4. The sand core press apparatus of claim 3, wherein: a push-pull mechanism in driving connection with the movable trolley platform is further arranged on one side of the lower bottom plate; the push-pull track of the push-pull mechanism is consistent with the sliding track direction of the first movable sliding rail and the second movable sliding rail.
5. The sand core press apparatus of claim 4, wherein: the lower part of the movable trolley platform is provided with a plurality of pairs of pulley blocks which are arranged on the pair of movable sliding rails I or the pair of movable sliding rails II in a sliding manner.
6. The sand core press apparatus of claim 5, wherein: the pulley block comprises a pair of pulleys which are longitudinally arranged, and the pair of pulleys are clamped on the upper side and the lower side of the first movable sliding rail in a sliding mode.
7. The sand core press apparatus of claim 1, wherein: the lower locking mechanism or the upper locking mechanism comprises a pair of locking hooks which can be opened, closed and swung relatively; the locking hook is pivotally connected to the upper part of the movable trolley platform or the lower part of the upper positioning mechanism through a rotating shaft; each pair of tight lock hooks is provided with a connecting rod in a penetrating way, and the end part of the connecting rod is provided with a tight lock nut for limiting.
8. The sand core press apparatus of claim 1, wherein: the upper portion positioning mechanism comprises an upper base plate arranged on the cross beam, an upper shaping plate is movably connected below the upper base plate through a pair of telescopic limiting rods, and a plurality of elastic abutting portions are arranged between the upper base plate and the upper shaping plate.
9. The sand core press apparatus of claim 8, wherein: the elastic support part comprises an elastic seat arranged on the lower part of the upper base plate, a contact rod capable of longitudinally stretching is movably embedded in the elastic seat, one end of the contact rod is elastically locked in the elastic seat, and the other end of the contact rod is penetrated through the elastic seat and then corresponds to the upper shaping plate.
10. A sand core press-mounting method of a sand core press-mounting machine device is characterized in that: the press-fitting of the sand core press machine as claimed in any one of claims 1 to 9, comprising the steps of,
locking a lower mold jig on the upper part of a mobile vehicle platform through a lower locking mechanism, and locking an upper mold jig on the lower part of an upper mold plate of an upper positioning mechanism through an upper locking mechanism;
placing a plurality of sand cores into a lower mold jig, and arranging viscose glue for bonding between the adjacent sand cores;
step three, transferring the mobile vehicle platform from the feeding area to the processing area through a push-pull mechanism;
driving a lower jig of the movable trolley platform to ascend through a lifting mechanism to be in butt joint and press fit with an upper jig, and abutting and limiting through an elastic abutting part;
step five, maintaining the pressure of the pressed lower-type jig and the pressed upper-type jig, wherein the pressure maintaining time corresponds to the time required by the processing requirement;
and step six, after the pressing is finished, reversing operation to realize material returning, and sequentially and circularly performing core pressing combination operation of the sand core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011600658.8A CN112846092B (en) | 2020-12-30 | 2020-12-30 | Sand core pressing machine device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011600658.8A CN112846092B (en) | 2020-12-30 | 2020-12-30 | Sand core pressing machine device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112846092A true CN112846092A (en) | 2021-05-28 |
| CN112846092B CN112846092B (en) | 2023-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011600658.8A Active CN112846092B (en) | 2020-12-30 | 2020-12-30 | Sand core pressing machine device |
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| Country | Link |
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| CN (1) | CN112846092B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204276820U (en) * | 2014-11-21 | 2015-04-22 | 昆山市昌坚铸造有限公司 | Support assembly of sand core tool |
| CN105817585A (en) * | 2016-05-18 | 2016-08-03 | 重庆新红旗缸盖制造有限公司 | Sand core assembling device |
| CN108405808A (en) * | 2018-04-04 | 2018-08-17 | 黄素兰 | Sand core closed assembly tooling |
| CN207900155U (en) * | 2018-02-26 | 2018-09-25 | 昆山市昌坚铸造有限公司 | A kind of assembly of sand core jig |
| CN208712794U (en) * | 2018-07-25 | 2019-04-09 | 天津久增金属有限公司 | A kind of sand cores of castings press |
| CN208772395U (en) * | 2018-07-25 | 2019-04-23 | 天津久增金属有限公司 | It is a kind of for combining the accurate press device of sand core |
| CN211135504U (en) * | 2019-12-17 | 2020-07-31 | 无锡市蠡湖铸业有限公司 | Full-automatic accurate core pressing device |
| CN211248217U (en) * | 2019-12-26 | 2020-08-14 | 苏州勤美达精密机械有限公司 | Psammitolite equipment tool |
-
2020
- 2020-12-30 CN CN202011600658.8A patent/CN112846092B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204276820U (en) * | 2014-11-21 | 2015-04-22 | 昆山市昌坚铸造有限公司 | Support assembly of sand core tool |
| CN105817585A (en) * | 2016-05-18 | 2016-08-03 | 重庆新红旗缸盖制造有限公司 | Sand core assembling device |
| CN207900155U (en) * | 2018-02-26 | 2018-09-25 | 昆山市昌坚铸造有限公司 | A kind of assembly of sand core jig |
| CN108405808A (en) * | 2018-04-04 | 2018-08-17 | 黄素兰 | Sand core closed assembly tooling |
| CN208712794U (en) * | 2018-07-25 | 2019-04-09 | 天津久增金属有限公司 | A kind of sand cores of castings press |
| CN208772395U (en) * | 2018-07-25 | 2019-04-23 | 天津久增金属有限公司 | It is a kind of for combining the accurate press device of sand core |
| CN211135504U (en) * | 2019-12-17 | 2020-07-31 | 无锡市蠡湖铸业有限公司 | Full-automatic accurate core pressing device |
| CN211248217U (en) * | 2019-12-26 | 2020-08-14 | 苏州勤美达精密机械有限公司 | Psammitolite equipment tool |
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| CN112846092B (en) | 2023-02-03 |
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