CN216831936U - Floating connection structure of hydraulic cylinder of injection molding machine - Google Patents
Floating connection structure of hydraulic cylinder of injection molding machine Download PDFInfo
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- CN216831936U CN216831936U CN202123451095.3U CN202123451095U CN216831936U CN 216831936 U CN216831936 U CN 216831936U CN 202123451095 U CN202123451095 U CN 202123451095U CN 216831936 U CN216831936 U CN 216831936U
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- piston rod
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- hydraulic cylinder
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- 238000001746 injection moulding Methods 0.000 title claims abstract description 40
- 238000009434 installation Methods 0.000 claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 230000000149 penetrating effect Effects 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 230000005489 elastic deformation Effects 0.000 abstract description 5
- 238000000465 moulding Methods 0.000 abstract description 2
- 229920003023 plastic Polymers 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000013011 mating Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The utility model discloses a floating connection structure of injection molding machine pneumatic cylinder is located the base of the mechanism of moulding plastics, including piston rod, connecting hole and locking mechanical system. The piston rod is provided with an installation section, the installation section is positioned at one end of the piston rod, and the piston rod is connected to the base. The connecting hole is located on the base, and the mounting section penetrates through the connecting hole. The locking mechanism comprises a fixing sleeve and a connecting plate, the fixing sleeve is matched with the tail end of the mounting section, the fixing sleeve is abutted to the base, the connecting plate is abutted to the tail end of the mounting section, and the connecting plate is fixedly connected with the base to fix the piston rod on the base. A gap is formed between the inner wall of the connecting hole and the outer wall of the mounting section, the mounting section is allowed to generate elastic deformation, deformation of the matching part of the piston rod and the hydraulic cylinder is reduced, internal stress of the piston rod is reduced, the piston rod is prevented from being broken, meanwhile, the precision of mounting and matching can be reduced, the processing cost is reduced, and the assembly process is simplified.
Description
Technical Field
The utility model relates to an injection molding machine technical field, in particular to floating connection structure of injection molding machine pneumatic cylinder.
Background
During production of the injection molding machine, the injection molding mechanism slides on the tail plate under the driving of the hydraulic cylinder, the injection cylinder is inserted into a mold and injected with molten materials during injection molding, and the hydraulic cylinder actuates to push the injection molding mechanism out to enable the injection cylinder to leave the mold plate after the injection molding is finished. At present, the tail end of a piston rod of a hydraulic cylinder is rigidly matched with a base of an injection molding mechanism and is connected through nut locking, and due to the fact that relative deformation and installation matching have precision errors and other factors in the movement process, the piston rod and the base have large internal stress, and the piston rod is prone to being bent or even broken; meanwhile, in the production process, the piston rod and the base need to be ensured to have higher matching precision, the production flow is complex, and the efficiency is low.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide a floating connection structure of injection molding machine pneumatic cylinder, reduce the internal stress, improve the life-span, simplify assembly process.
According to the utility model discloses a, a floating connection structure of injection molding machine pneumatic cylinder is provided, is located the base of the mechanism of moulding plastics, including piston rod, connecting hole and locking mechanical system. The piston rod is provided with an installation section, the installation section is positioned at one end of the piston rod, and the piston rod is connected to the base. The connecting hole is located the base, and the installation section is worn to locate in the connecting hole, has the clearance between the outer wall of the inner wall of connecting hole and installation section. The locking mechanism comprises a fixing sleeve and a connecting plate, the fixing sleeve is matched with the tail end of the mounting section, the fixing sleeve is abutted to the base, the connecting plate is abutted to the tail end of the mounting section, and the connecting plate is fixedly connected with the base to fix the piston rod on the base.
A floating connection structure of injection molding machine pneumatic cylinder have following beneficial effect at least: the tail end of the piston rod is provided with the mounting section, the mounting section penetrates through the connecting hole in the base, the tail end is connected with the fixing sleeve of the locking mechanism in a matched mode, and meanwhile the piston rod is pressed on the base to be fixed through the connecting plate fixed on the base. The gap is reserved between the mounting section and the connecting hole, the mounting section is allowed to generate elastic deformation, deformation of the matching part of the piston rod and the hydraulic cylinder is reduced, internal stress of the piston rod is reduced, breakage of the piston rod is avoided, meanwhile, the precision of mounting and matching can be reduced, machining cost is reduced, and the assembling process is simplified.
According to a floating connection structure of injection molding machine pneumatic cylinder, the end of erection section has the external screw thread, the fixed cover has the internal thread, fixed cover passes through threaded connection with the erection section and is fixed, is convenient for install when guaranteeing that erection section and fixed cover are connected firmly.
According to a floating connection structure of injection molding machine pneumatic cylinder, the fitting surface of fixed cover butt on the base, the connecting plate butt has the clearance in the end of erection segment between connecting plate and the fixed cover, allows the connecting plate to have certain elastic deformation when locking, prevents not hard up.
According to a floating connection structure of injection molding machine pneumatic cylinder, the fitting surface is located the one side of keeping away from the pneumatic cylinder on the base, makes compact structure when providing the deformation space for the erection segment, reduces length.
According to a floating connection structure of injection molding machine pneumatic cylinder, the piston rod still includes the stroke section, the stroke section is located the flexible stroke within range of pneumatic cylinder.
According to a floating connection structure of injection molding machine pneumatic cylinder, be equipped with the buffer segment between stroke section and the installing section, the external diameter of stroke section is slightly bigger than the external diameter of buffer segment, the external diameter of buffer segment is slightly bigger than the external diameter of installing section, is favorable to reducing stress transmission to the stroke section of piston rod on, lead to the piston rod to warp and influence transmission precision, avoids the pneumatic cylinder to produce uneven wearing and tearing simultaneously.
According to a floating connection structure of injection molding machine pneumatic cylinder, the radial outside of buffer segment has two planes that are parallel to each other for prevent the piston rod rotatory when the fixed cover of installation, be convenient for install.
According to a floating connection structure of injection molding machine pneumatic cylinder, be equipped with first through-hole on the connecting plate, fixed cover is equipped with the second through-hole, first through-hole is corresponding with the position of second through-hole, first through-hole and second through-hole are used for passing the bolt of connecting in the base, are convenient for install fast.
According to a floating connection structure of injection molding machine pneumatic cylinder, the pneumatic cylinder of drive base sets up two at least, makes the base operate steadily.
According to floating connection structure of injection molding machine pneumatic cylinder, the base below is provided with linear slide rail for support and direction when the base translation, make the base remove stably and have good position precision.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The present invention will be further described with reference to the accompanying drawings and examples;
fig. 1 is a side view of a floating connection structure of a hydraulic cylinder of an injection molding machine according to an embodiment of the present invention;
fig. 2 is a side sectional view of a floating connection structure of a hydraulic cylinder of an injection molding machine according to an embodiment of the present invention;
fig. 3 is an axial view of the floating connection structure of the hydraulic cylinder of the injection molding machine according to the embodiment of the present invention.
Reference numerals:
a base 100; a mating face 101; a mounting section 110; a fixing sleeve 120; a second through hole 121; a connecting plate 130; a first through hole 131; a buffer section 140; a flat surface 141; a piston rod 150; a stroke segment 151; a connection hole 160; a linear slide 170; a tail plate 180.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1 to 3, an embodiment of the present invention provides a floating connection structure of a hydraulic cylinder of an injection molding machine, which is located on a base 100 of an injection molding mechanism, and includes a piston rod 150, a connection hole 160, and a locking mechanism. The piston rod 150 is provided with a mounting section 110, the mounting section 110 is located at one end of the piston rod 150, and the piston rod 150 is connected to the base 100. The base 100 is provided with a connecting hole 160, the mounting section 110 passes through the middle of the connecting hole 160, and the end of the mounting section 110 is connected with the locking mechanism, thereby realizing the fixed connection of the piston rod 150 on the base 100. Optionally, a gap is formed between the inner wall of the connecting hole 160 and the outer wall of the mounting section 110, because vibration exists in the transmission process and precision errors exist in the production and mounting processes, internal stress is generated at the connecting position of the piston rod 150 and the base 100, meanwhile, the piston rod 150 elastically deforms, the piston rod 150 is rigidly connected with the base 100, and if the elastic deformation amplitude of the piston rod 150 is large, the internal stress is too large when the hydraulic cylinder extends and retracts, so that the piston rod 150 is easily fatigued and even breaks, and therefore, the mounting section 110 is allowed to elastically deform in the connecting hole 160, and reduction of the internal stress of the piston rod 150 is facilitated. Meanwhile, the precision of installation and matching between the piston rod 150 and the base 100 is reduced, the assembly process is simplified, and the processing cost is reduced.
The locking mechanism includes a fixing sleeve 120 and a connecting plate 130, and the fixing sleeve 120 is fitted to the end of the mounting section 110. The preferred fixing sleeve 120 and connecting plate 130 are metal parts with circular cross-sections, which are easily formed by turning. Optionally, the end of the mounting section 110 has an external thread, the fixing sleeve 120 has an internal thread, and the fixing sleeve 120 is fixed to the mounting section 110 by a threaded connection, so as to ensure that the mounting section 110 is stably connected to the fixing sleeve 120 and facilitate installation. Further, referring to fig. 1, one end of the fixing sleeve 120 abuts against the mating surface 101 of the base 100, and the end of the mounting section 110 extends out of the other end of the fixing sleeve 120, so that the connecting plate 130 abuts against the end surface of the mounting section 110 when the connecting plate 130 is fixedly connected with the base 100, a gap is formed between the connecting plate 130 and the fixing sleeve 120, the connecting plate 130 is allowed to have a certain elastic deformation when being locked, the looseness is prevented, and the stable threaded connection of the fixing sleeve 120 and the mounting section 110 is ensured. Optionally, the mating surface 101 is located on a side of the base 100 away from the hydraulic cylinder, so as to provide a deformation space for the mounting section 110 while making the structure compact, and to ensure that the hydraulic cylinder maintains the original stroke range while avoiding increasing the length of the injection molding mechanism.
Optionally, the piston rod 150 further includes a stroke segment 151, the stroke segment 151 is located within a telescopic stroke range of the hydraulic cylinder, a buffer segment 140 is disposed between the stroke segment 151 and the mounting segment 110, an outer diameter of the stroke segment 151 is slightly larger than an outer diameter of the buffer segment 140, and an outer diameter of the buffer segment 140 is slightly larger than an outer diameter of the mounting segment 110, which is beneficial to reducing stress transmitted to the stroke segment 151 of the piston rod 150, so that the piston rod 150 deforms to affect transmission precision, and unbalanced wear of the hydraulic cylinder is avoided. Furthermore, a chamfer is arranged between the stroke section 151 and the buffer section 140, so that stress concentration at the connecting part of the stroke section 151 and the buffer section 140 is reduced. Optionally, the radial outer side of the buffering section 140 has two parallel planes 141 for clamping the piston rod 150 by a wrench when the fixing sleeve 120 is installed, so as to prevent the piston rod 150 from rotating and facilitate installation.
Optionally, the connecting plate 130 is provided with a first through hole 131, the fixing sleeve 120 is provided with a second through hole 121, the first through hole 131 corresponds to the second through hole 121, and the first through hole 131 and the second through hole 121 are used for passing through a bolt connected to the base 100, so as to facilitate quick installation. Preferably, the first through holes 131 are located at the radial edge of the connecting plate 130, and the plurality of first through holes 131 are distributed at equal angles on the circumference, so that the mounting section 110 is uniformly stressed when the locking mechanism is fixedly connected with the base 100, the generation of internal stress is reduced, and the work is more stable.
Optionally, the hydraulic cylinders for driving the base 100 are at least two, so that the base 100 is stressed uniformly and operates stably, and the scheme preferably includes two hydraulic cylinders which are respectively located on two sides of the base 100. Optionally, a linear sliding rail 170 is disposed below the base 100 and used for supporting and guiding the base 100 during translation, the linear sliding rail 170 includes a guide rail and a slider, the slider is mounted at the bottom of the base 100, the slider is in sliding fit with the guide rail, and the guide rail is mounted on the tail plate 180, which helps to reduce sliding friction during operation, so that the base 100 moves stably and has good position accuracy.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The utility model provides an injection molding machine hydraulic cylinder's connection structure that floats, is located injection molding machine structure's base, its characterized in that includes:
the piston rod is provided with an installation section, the installation section is positioned at one end of the piston rod, and the piston rod is connected to the base;
the connecting hole is positioned on the base, the mounting section is arranged in the connecting hole in a penetrating manner, and a gap is formed between the inner wall of the connecting hole and the outer wall of the mounting section;
the locking mechanism comprises a fixing sleeve and a connecting plate, the fixing sleeve is matched with the tail end of the mounting section, the fixing sleeve is abutted to the base, the connecting plate is abutted to the tail end of the mounting section, and the connecting plate is fixedly connected with the base to fix the piston rod on the base.
2. The floating connection structure of the hydraulic cylinder of the injection molding machine according to claim 1, characterized in that: the terminal of installation section has the external screw thread, fixed cover has the internal thread, fixed cover with the installation section passes through threaded connection fixedly.
3. The floating connection structure of the hydraulic cylinder of the injection molding machine according to claim 1, characterized in that: the fixed sleeve is abutted to the matching surface on the base, the connecting plate is abutted to the tail end of the mounting section, and a gap is formed between the connecting plate and the fixed sleeve.
4. The floating connection structure of the hydraulic cylinder of the injection molding machine according to claim 3, wherein: the matching surface is positioned on one side of the base, which is far away from the hydraulic cylinder.
5. The floating connection structure of the hydraulic cylinder of the injection molding machine according to claim 1, characterized in that: the piston rod further comprises a stroke section, and the stroke section is located in the telescopic stroke range of the hydraulic cylinder.
6. The floating connection structure of the hydraulic cylinder of the injection molding machine according to claim 5, wherein: and a buffer section is arranged between the stroke section and the mounting section, the outer diameter of the stroke section is slightly larger than that of the buffer section, and the outer diameter of the buffer section is slightly larger than that of the mounting section.
7. The floating connection structure of the hydraulic cylinder of the injection molding machine according to claim 6, wherein: the radial outer side of the buffer section is provided with two planes which are parallel to each other and used for preventing the piston rod from rotating when the fixed sleeve is installed.
8. The floating connection structure of the hydraulic cylinder of the injection molding machine according to claim 1, characterized in that: the connecting plate is provided with a first through hole, the fixing sleeve is provided with a second through hole, the first through hole corresponds to the second through hole in position, and the first through hole and the second through hole are used for penetrating and connecting with a bolt of the base.
9. The floating connection structure of the hydraulic cylinder of the injection molding machine according to claim 1, characterized in that: at least two hydraulic cylinders for driving the base are arranged.
10. The floating connection structure of the hydraulic cylinder of the injection molding machine according to claim 1, characterized in that: and a linear slide rail is arranged below the base and used for supporting and guiding the base during translation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123451095.3U CN216831936U (en) | 2021-12-31 | 2021-12-31 | Floating connection structure of hydraulic cylinder of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123451095.3U CN216831936U (en) | 2021-12-31 | 2021-12-31 | Floating connection structure of hydraulic cylinder of injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216831936U true CN216831936U (en) | 2022-06-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123451095.3U Active CN216831936U (en) | 2021-12-31 | 2021-12-31 | Floating connection structure of hydraulic cylinder of injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216831936U (en) |
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2021
- 2021-12-31 CN CN202123451095.3U patent/CN216831936U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A Floating Connection Structure for Hydraulic Cylinder of Injection Molding Machine Effective date of registration: 20231020 Granted publication date: 20220628 Pledgee: Guangdong Heshan Rural Commercial Bank Co.,Ltd. Gonghe science and technology sub branch Pledgor: GUANGDONG ZHUDE INDUSTRIAL CO.,LTD. Registration number: Y2023980062004 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |