CN116464761A - Dedicated speed reducer structure of injection molding machine - Google Patents

Dedicated speed reducer structure of injection molding machine Download PDF

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Publication number
CN116464761A
CN116464761A CN202310478136.2A CN202310478136A CN116464761A CN 116464761 A CN116464761 A CN 116464761A CN 202310478136 A CN202310478136 A CN 202310478136A CN 116464761 A CN116464761 A CN 116464761A
Authority
CN
China
Prior art keywords
circulating
cavity
oil
water
assembly
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.)
Pending
Application number
CN202310478136.2A
Other languages
Chinese (zh)
Inventor
夏建敏
夏硕芳
李瑞东
孙万荣
郦圣早
习佳兴
赵雪艳
赵海燕
刘宁
戴丽芬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhejiang Xiaxia Precision Manufacturing Co ltd
Original Assignee
Zhejiang Xiaxia Precision Manufacturing Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhejiang Xiaxia Precision Manufacturing Co ltd filed Critical Zhejiang Xiaxia Precision Manufacturing Co ltd
Priority to CN202310478136.2A priority Critical patent/CN116464761A/en
Publication of CN116464761A publication Critical patent/CN116464761A/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/83—Lubricating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H1/00—Toothed gearings for conveying rotary motion
    • F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
    • F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/06—Use of materials; Use of treatments of toothed members or worms to affect their intrinsic material properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
    • F16H55/02—Toothed members; Worms
    • F16H55/17—Toothed wheels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • F16H57/0415—Air cooling or ventilation; Heat exchangers; Thermal insulations
    • F16H57/0417—Heat exchangers adapted or integrated in the gearing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/048—Type of gearings to be lubricated, cooled or heated
    • F16H57/0482—Gearings with gears having orbital motion
    • F16H57/0486—Gearings with gears having orbital motion with fixed gear ratio
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The utility model provides a dedicated speed reducer structure of injection molding machine, includes the casing that forms through upper shell and inferior valve seal assembly, be provided with the assembly chamber in the casing. The assembly cavity is provided with a speed reducing assembly and is filled with lubricating oil. And a circulating oil cavity and a circulating water cavity which are mutually isolated are axially arranged in the upper shell. The circulating oil cavity is internally provided with a circulating oil component, an oil inlet communicated to the assembling cavity is arranged at a circulating inlet of the circulating oil cavity corresponding to the circulating component, and an oil outlet communicated to the assembling cavity is arranged at a circulating outlet of the circulating component. The circulating water cavity is internally provided with a water inlet and a water outlet which are communicated with the outside, and the circulating water cavity is externally connected with a circulating water system through the water inlet and the water outlet. Compared with the prior art, the application has the following beneficial effects: by adopting the design of the circulating oil cavity and the circulating water cavity, the heat dissipation effect of the speed reducer is effectively improved, and the service life of the speed reducer is prolonged.

Description

Dedicated speed reducer structure of injection molding machine
Technical Field
The invention belongs to the field of speed reducers for injection molding machines, and particularly relates to a speed reducer structure special for an injection molding machine.
Background
The injection molding machine is a device for melting, injecting and cooling thermoplastic plastics, and is widely applied to the production of plastic products. One of the core components of the injection molding machine is a speed reducer, which is used for converting the output of a motor with high speed and low torque into the output with low speed and high torque so as to meet the driving requirement of the injection molding machine. The performance and the reliability of the speed reducer of the injection molding machine have important significance for the stable operation of the whole injection molding machine equipment.
However, the existing injection molding machine speed reducer technology has some disadvantages. First, the heat dissipation effect of the related art is poor, and the temperature of the lubricating oil may be increased due to friction and heat generated during high-speed operation, thereby affecting the lubrication effect. Secondly, because of long-time operation and high-speed operation, the internal machine parts can generate larger abrasion, and fragments generated by abrasion can further aggravate abrasion in the operation of the speed reducer, even cause early failure, and greatly reduce the service life of the speed reducer.
Accordingly, the present application has been further designed and developed based on some of the above prior art.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a special speed reducer structure for an injection molding machine, and the design of a circulating oil cavity and a circulating water cavity is adopted, so that the heat dissipation effect of the speed reducer is effectively improved, and the service life of the speed reducer is prolonged.
In order to solve the technical problems, the invention is solved by the following technical scheme.
The utility model provides a dedicated speed reducer structure of injection molding machine, includes the casing that forms through upper shell and inferior valve seal assembly, be provided with the assembly chamber in the casing. The assembly cavity is provided with a speed reducing assembly and is filled with lubricating oil. And a circulating oil cavity and a circulating water cavity which are mutually isolated are axially arranged in the upper shell. The circulating oil cavity is internally provided with a circulating oil component, an oil inlet communicated to the assembling cavity is arranged at a circulating inlet of the circulating oil cavity corresponding to the circulating component, and an oil outlet communicated to the assembling cavity is arranged at a circulating outlet of the circulating component. The circulating water cavity is internally provided with a water inlet and a water outlet which are communicated with the outside, and the circulating water cavity is externally connected with a circulating water system through the water inlet and the water outlet. The circulating water cavity is connected with an external circulating water system, so that heat generated by the speed reducer can be rapidly led out, and the heat dissipation effect is improved.
In a preferred embodiment, the reduction assembly is a planetary reduction structure comprising an input gear shaft, a planet carrier, a planet gear, and an output shaft. The planetary gear is connected with the planetary carrier in an assembling way, the output shaft is integrally arranged with the planetary carrier, the input gear shaft is meshed with the planetary gear, the inner wall of the lower shell is provided with a gear ring meshed with the planetary gear, and the planetary gear can provide extremely high reduction ratio and torque force for the injection molding machine, thereby being beneficial to improving the efficiency of the mechanical device and improving the fineness of products.
In a preferred embodiment, the circulating oil chamber comprises a pump oil chamber, the circulating oil assembly is assembled in the pump oil chamber, and the circulating oil assembly comprises a circulating oil gear and a driven oil gear which are connected in a meshed manner. The input gear shaft extends into the circulating oil cavity, and the circulating oil gear is fixedly connected with the input gear shaft.
In a preferred embodiment, the oil pumping cavity is connected with the oil inlet through a first heat dissipation flow channel, and the oil pumping cavity is connected with the oil outlet through a second heat dissipation flow channel.
In a preferred embodiment, the first heat dissipation flow path and the second heat dissipation flow path are arranged in a curved loop.
In a preferred embodiment, the oil inlet is arranged on the side surface of the assembly cavity, the side surface of the lower shell is provided with an assembly hole communicated with the assembly cavity, and the oil inlet is connected with the assembly hole through a connecting pipe.
In a preferred embodiment, a filter is connected to the connecting tube.
In a preferred embodiment, a circulating water assembly is arranged in the circulating water cavity, and divides the circulating water cavity into a water inlet cavity connected with the water inlet and a water outlet cavity connected with the water outlet.
In a preferred embodiment, the circulating water assembly includes a circulating water gear and a driven water gear which are engaged with each other. The input gear shaft extends into the circulating water cavity, and the circulating water gear is fixedly connected with the input gear shaft.
In a preferred embodiment, the circulating water gear and the driven water gear are made of corrosion-resistant, wear-resistant and high-temperature-resistant plastic materials, so that the service life is prolonged.
Compared with the prior art, the application has the following beneficial effects:
1. by adopting the design of the circulating oil cavity and the circulating water cavity, the heat dissipation effect of the speed reducer is effectively improved, and the service life of the speed reducer is prolonged.
2. And the circulating components are arranged in the circulating oil cavity and the circulating water cavity, so that the circulating efficiency is improved, and the heat dissipation effect is effectively enhanced.
3. The circulating oil component and the circulating water component are driven by the input gear shaft, so that the speed reducer is simple and compact in structure, and the production and manufacturing cost is reduced while the technical effect is ensured.
4. The filter element is arranged, so that abrasion scraps generated by the operation of the gears can be collected, and the service life of the machine part is effectively prolonged.
Drawings
Fig. 1 is a perspective view of a speed reducer structure.
Fig. 2 is a schematic plan view of a speed reducer structure.
Fig. 3 is an exploded view of the deceleration assembly.
FIG. 4 is a schematic cross-sectional view of a circulating oil chamber.
Fig. 5 is a schematic cross-sectional view of a circulating water chamber.
The following is a description of the marks in the drawings of the specification:
1. an upper case; 2. a lower case;
3. a deceleration assembly; 31. an input gear shaft; 32. a planet carrier; 33. a planetary gear; 34. an output shaft; 35. a bearing; 36. an oil seal;
40. an oil inlet; 41. an oil outlet; 42. a circulating oil gear; 43. a driven oil gear; 44. a first heat dissipation flow path; 45. a second heat dissipation flow path; 46. a connecting pipe; 47. a filter;
50. a water inlet; 51. a water outlet; 52. a circulating water gear; 53. driven water gear; 54. a water inlet cavity; 55. and a water outlet cavity.
Description of the embodiments
The invention is described in further detail below with reference to the drawings and the detailed description.
In the following embodiments, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout, and the embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms: the directions of the center, the longitudinal, the lateral, the length, the width, the thickness, the upper, the lower, the front, the rear, the left, the right, the vertical, the horizontal, the top, the bottom, the inner, the outer, the clockwise, the counterclockwise, etc. indicate the directions or the positional relationship based on the directions or the positional relationship shown in the drawings, are merely for convenience of description and simplification of the description, and therefore, should not be construed as limiting the present invention. Furthermore, the term: first, second, etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of features shown. In the description of the present invention, unless explicitly specified and defined otherwise, the terms: mounting, connecting, etc. should be construed broadly and the specific meaning of the terms in the present application will be understood by those skilled in the art in view of the specific circumstances.
Referring to fig. 1 to 5, a speed reducer structure special for an injection molding machine comprises a housing formed by sealing and assembling an upper housing 1 and a lower housing 2, wherein an assembling cavity is arranged in the housing. The assembly chamber is fitted with a reduction assembly 3 and filled with lubricating oil. The upper shell 1 is internally provided with a circulating oil cavity and a circulating water cavity which are mutually isolated along the axial direction. The circulating oil assembly is assembled in the circulating oil cavity, and can improve the circulating efficiency and effectively strengthen the radiating effect. The circulation oil cavity is provided with an oil inlet 40 communicated to the assembly cavity corresponding to the circulation inlet of the circulation assembly, and an oil outlet 41 communicated to the assembly cavity corresponding to the circulation outlet of the circulation assembly. The circulating water cavity is internally provided with a water inlet 50 and a water outlet 51 which are communicated with the outside, and the circulating water cavity is externally connected with a circulating water system through the water inlet 50 and the water outlet 51. The circulating water cavity is connected with an external circulating water system, so that heat generated by the speed reducer can be rapidly led out, and the heat dissipation effect is improved.
The speed reduction assembly 3 is of a planetary speed reduction structure, can provide extremely high speed reduction ratio and torque force for the injection molding machine, and is beneficial to improving the efficiency of a mechanical device and improving the fineness of products. As shown in fig. 3, the planetary reduction structure comprises an input gear shaft 31, a planet carrier 32, a planet gear 33 and an output shaft 34, wherein the planet carrier 32 is rotatably assembled with a shell through a bearing 35, and the input gear shaft 31, the output shaft 34 and the shell are hermetically assembled through an oil seal 36. The planetary gear 33 is assembled and connected with the planetary carrier 32, the output shaft 34 and the planetary carrier 32 are integrally arranged, the input gear shaft 31 is meshed and connected with the planetary gear 33, and a gear ring meshed and connected with the planetary gear 33 is arranged on the inner wall of the lower shell 2.
As a specific embodiment, on the basis of the above structure, the circulating oil chamber includes a pumping oil chamber, the structure of which is shown in fig. 4, and the circulating oil assembly is assembled in the pumping oil chamber, and includes a circulating oil gear 42 and a driven oil gear 43 which are engaged with each other. The input gear shaft 31 extends into the circulating oil cavity, and the circulating oil gear 42 is fixedly connected with the input gear shaft 31, so that the circulating oil assembly is driven by the input gear shaft 31, and the design and production cost can be reduced. The oil pumping cavity is connected with the oil inlet 40 through a first heat dissipation flow channel 44, and the oil pumping cavity is connected with the oil outlet 41 through a second heat dissipation flow channel 45. The first heat dissipation flow channel 44 and the second heat dissipation flow channel 45 are arranged in a curved loop. So that the oil flows through a long enough distance to perform sufficient heat dissipation.
As a specific embodiment, based on the above structure, the oil inlet 40 is disposed at a side of the assembly cavity, the side of the lower case 2 is provided with an assembly hole communicating with the assembly cavity, and the oil inlet 40 is connected to the assembly hole through a connection pipe 46. When the lubricant needs to be replaced, the worker only needs to disassemble the connecting pipe 46, and does not need to disassemble the whole speed reducer. The connecting pipe 46 is connected with a filtering piece 47, so that abrasion scraps generated by gear operation can be collected, and the service life of a machine part is effectively prolonged.
As a specific embodiment, on the basis of the structure, the circulating water assembly is arranged in the circulating water cavity, and the circulating oil assembly can improve the circulating efficiency and effectively strengthen the radiating effect. As shown in fig. 5, the circulating water assembly divides the circulating water chamber into a water inlet chamber 54 connected to the water inlet 50, and a water outlet chamber 55 connected to the water outlet 51. The circulating water assembly includes a circulating water gear 52 and a driven water gear 53 which are engaged with each other. The input gear shaft 31 extends into the circulating water cavity, and the circulating water gear 52 is fixedly connected with the input gear shaft 31. So that the circulating water assembly is driven by the input gear shaft 31, which is advantageous in reducing design and production costs.
In particular, the circulating water gear 52 and the driven water gear 53 are made of a corrosion-resistant, wear-resistant, and high-temperature-resistant plastic material, and a preferable material may be one or more of polytetrafluoroethylene, polypropylene, polyurethane, high-density polyethylene, etc. polymerized to extend the service life of the gears.
The scope of the present invention includes, but is not limited to, the above embodiments, and any alterations, modifications, and improvements made by those skilled in the art are intended to fall within the scope of the invention.

Claims (10)

1. The special speed reducer structure for the injection molding machine comprises a shell formed by sealing and assembling an upper shell (1) and a lower shell (2), wherein an assembling cavity is formed in the shell; the assembly cavity is provided with a speed reduction assembly (3) and is filled with lubricating oil; the device is characterized in that a circulating oil cavity and a circulating water cavity which are mutually isolated are axially arranged in the upper shell (1);
the circulating oil cavity is internally provided with a circulating oil component, a circulating inlet of the circulating oil cavity corresponding to the circulating component is provided with an oil inlet (40) communicated to the assembling cavity, and a circulating outlet of the circulating oil cavity corresponding to the circulating component is provided with an oil outlet (41) communicated to the assembling cavity;
the circulating water cavity is internally provided with a water inlet (50) and a water outlet (51) which are communicated to the outside, and the circulating water cavity is externally connected with a circulating water system through the water inlet (50) and the water outlet (51).
2. The special speed reducer structure for the injection molding machine according to claim 1, wherein the speed reducing assembly (3) is a planetary speed reducing structure and comprises an input gear shaft (31), a planet carrier (32), a planet gear (33) and an output shaft (34); the planetary gear (33) is assembled and connected with the planet carrier (32), the output shaft (34) and the planet carrier (32) are integrally arranged, the input gear shaft (31) is meshed and connected with the planetary gear (33), and a gear ring meshed and connected with the planetary gear (33) is arranged on the inner wall of the lower shell (2).
3. A special speed reducer structure for injection molding machine according to claim 2, wherein the circulating oil cavity comprises a pump oil cavity, the circulating oil assembly is assembled in the pump oil cavity, and the circulating oil assembly comprises a circulating oil gear (42) and a driven oil gear (43) which are connected in a meshed manner; the input gear shaft (31) stretches into the circulating oil cavity, and the circulating oil gear (42) is fixedly connected with the input gear shaft (31).
4. A special speed reducer structure for an injection molding machine according to claim 3, wherein the oil pumping chamber is connected with the oil inlet (40) through a first heat dissipation flow passage (44), and the oil pumping chamber is connected with the oil outlet (41) through a second heat dissipation flow passage (45).
5. The speed reducer structure special for injection molding machines according to claim 4, wherein the first heat dissipation runner (44) and the second heat dissipation runner (45) are arranged in a curved loop.
6. The speed reducer structure special for the injection molding machine according to claim 1, wherein the oil inlet (40) is arranged on the side surface of the assembly cavity, the side surface of the lower shell (2) is provided with an assembly hole communicated with the assembly cavity, and the oil inlet (40) is connected with the assembly hole through a connecting pipe (46).
7. The speed reducer structure special for injection molding machine according to claim 6, wherein the connecting pipe (46) is connected with a filter (47).
8. The special speed reducer structure for the injection molding machine according to claim 1, wherein a circulating water assembly is arranged in the circulating water cavity, and the circulating water assembly divides the circulating water cavity into a water inlet cavity (54) connected with the water inlet (50) and a water outlet cavity (55) connected with the water outlet (51).
9. The speed reducer structure special for injection molding machines according to claim 8, wherein the circulating water assembly comprises a circulating water gear (52) and a driven water gear (53) which are connected with each other in a meshed manner; the input gear shaft (31) stretches into the circulating water cavity, and the circulating water gear (52) is fixedly connected with the input gear shaft (31).
10. The speed reducer structure special for injection molding machines according to claim 9, wherein the circulating water gear (52) and the driven water gear (53) are made of a corrosion-resistant, wear-resistant and high-temperature-resistant plastic material.
CN202310478136.2A 2023-04-28 2023-04-28 Dedicated speed reducer structure of injection molding machine Pending CN116464761A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310478136.2A CN116464761A (en) 2023-04-28 2023-04-28 Dedicated speed reducer structure of injection molding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310478136.2A CN116464761A (en) 2023-04-28 2023-04-28 Dedicated speed reducer structure of injection molding machine

Publications (1)

Publication Number Publication Date
CN116464761A true CN116464761A (en) 2023-07-21

Family

ID=87175258

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310478136.2A Pending CN116464761A (en) 2023-04-28 2023-04-28 Dedicated speed reducer structure of injection molding machine

Country Status (1)

Country Link
CN (1) CN116464761A (en)

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