Hydraulic oil cylinder for injection molding machine

Abstract

The utility model relates to a hydraulic oil cylinder for an injection molding machine. The hydraulic oil cylinder is provided with an oil cylinder body which can be mounted on the injection molding machine, a first connecting assembly is arranged on the oil cylinder body, and a second connecting assembly is arranged at the push rod end of the oil cylinder body. The first connecting assembly comprises a first connecting part fixedly arranged on the oil cylinder body and a first fixing part capable of being matched with the first connecting part in an inserted mode. The second connecting assembly comprises a second connecting part fixedly arranged at the push rod end of the oil cylinder body and a second fixing part capable of being matched with the second connecting part in an inserted mode. The oil cylinder body is detachably and fixedly connected with a machine base of the injection molding machine through matching formed by the first fixing part and the first connecting part, and the push rod end of the oil cylinder body is detachably and fixedly connected with a machine frame of the injection molding machine through matching formed by the second fixing part and the second connecting part. Convenience and rapidness are realized.

Description

Technical Field

[0001] The utility model relates to a hydraulic oil cylinder for an injection molding machine. Background Art

[0002] Injection molding machine is also known as injection molding machine or injection machine. It is the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics; it is divided into vertical, horizontal, and all-electric types; the injection molding machine can heat the plastic, apply high pressure to the molten plastic, and make it ejected and fill the mold cavity; the working principle of the injection molding machine is to add granular or powdered plastic into the barrel, and make the plastic molten through the rotation of the screw and the heating of the outer wall of the barrel, and then the machine closes the mold and moves the injection seat forward, so that the nozzle is close to the gate of the mold, and then the pressure oil is introduced into the injection cylinder to push the screw forward, so that the molten material is injected into the closed mold with a lower temperature at a very high pressure and a faster speed. After a certain period of time and pressure maintenance (also called pressure holding) and cooling, it is solidified and formed, and then the mold can be opened to take out the product.

[0003] The hydraulic cylinder is an important component in the injection molding machine. It can push or pull the screw to move in the injection molding machine. The connection of the hydraulic cylinder is particularly firm. When disassembling and repairing, it is not convenient to disassemble the hydraulic cylinder, and the disassembly is very laborious and time-consuming. Now there is a need for a hydraulic cylinder that is easy to disassemble. Utility Model Content

[0004] The utility model aims to provide a hydraulic oil cylinder for an injection molding machine, which can be quickly disassembled and installed on the injection molding machine, which is convenient and fast.

[0005] The technical solution for achieving the purpose of the utility model is as follows: the utility model comprises a cylinder body installed on an injection molding machine; a first connecting assembly is provided on the cylinder body, and a second connecting assembly is provided at a push rod end of the cylinder body; the first connecting assembly comprises a first connecting portion arranged on the cylinder body and a first fixing portion which can be plugged into and matched with the first connecting portion, the second connecting assembly comprises a second connecting portion arranged on the push rod end of the cylinder body and a second fixing portion which can be plugged into and matched with the second connecting portion; the cylinder body is detachably fixedly connected to the base of the injection molding machine through the cooperation formed by the first fixing portion and the first connecting portion, and the push rod end of the cylinder body is detachably fixedly connected to the frame of the injection molding machine through the cooperation formed by the second fixing portion and the second connecting portion; the first fixing portion is provided with a plurality of paths which are evenly arranged from the center outward and along the first fixing portion A slide groove is extended in the extension direction of the outer contour of the fixed part, and a guide groove is also provided on the first fixed part, one end of the guide groove extends toward the center of the first fixed part and is connected with each slide groove, and the other end of the guide groove passes through the first fixed part and is connected with the outside; the first connecting part is rotatably arranged on the cylinder body, and the first connecting part is provided with a plurality of sliders that are evenly arranged outward from the center of the first connecting part and can form a sliding fit with the guide groove, and each slider corresponds to the slide groove on the first fixed part one by one after sliding fit with the guide groove and can form a corresponding sliding fit; the first connecting part forms a detachable plug-in fit with the first fixed block through the sliding fit between the slider and the guide groove and the sliding plug-in fit between the slider and the slide groove, and the cylinder body forms a detachable fixed connection with the injection molding machine base through the detachable plug-in fit formed by the first fixed part and the first connecting part.

[0006] Furthermore, the second connecting part is fixedly arranged on the push rod end of the cylinder body, the second fixing part is provided with a slot, and the second connecting part is provided with an insert block which can be inserted into the slot; the second fixing part is provided with a first through hole which is connected with the slot at one end and connected with the outside at the other end, the insert block is provided with a second through hole which can be connected with the first through hole after being inserted into the slot, and is also provided with an insert rod which can be inserted into the first through hole and the second through hole at the same time; the second connecting part forms a detachable plug-in fit with the second fixing part through the plug-in fit formed with the slot after the insert block is inserted into the first through hole and the second through hole through the insert rod, and the push rod end of the cylinder body forms a detachable fixed connection with the injection molding machine frame through the detachable plug-in fit formed by the second fixing part and the second connecting part.

[0007] Furthermore, a limit block for limiting the sliding of the slider is provided in the slide groove, and a limit rod that can be inserted into the guide groove is provided. After the slider enters the slide groove, it is limited in the slide groove under the limiting cooperation of the limit rod and the limit block.

[0008] Furthermore, a first thread is provided inside the first through hole, and a second thread that can form a threaded match with the first thread is provided on the insertion rod. After the insertion rod is inserted into the first through hole and the second through hole, the first thread and the second thread are threadedly matched and fixed to the second fixing part.

[0009] The utility model has positive effects: (1) the oil cylinder body of the utility model forms a detachable fixed connection with the base of the injection molding machine through the cooperation formed by the first fixing part and the first connecting part, and the push rod end of the oil cylinder body forms a detachable fixed connection with the frame of the injection molding machine through the cooperation formed by the second fixing part and the second connecting part; the hydraulic cylinder can be quickly disassembled and installed on the injection molding machine through the cooperation formed by the first fixing part and the first connecting part and the cooperation formed by the second fixing part and the second connecting part, which is convenient for replacement, installation or maintenance.

[0010] (2) The first connecting portion of the utility model forms a detachable plug-in fit with the first fixed block through the sliding fit between the slider and the guide groove and the sliding plug-in fit between the slider and the slide groove. After being guided by the guide groove, the slider enters the slide groove and forms a fit with the slide groove. The slider quickly forms a fit with the slide groove through the guide groove. At the same time, the fit between the slider and the slide groove enables the first connecting portion and the first fixed portion to form a connection quickly, which is efficient and quick.

[0011] (3) The insertion rod of the utility model can be plugged into and matched with the first through hole on the second fixing block and the second through hole on the insertion block. After the insertion block and the slot are matched, the second connecting block part and the second fixing part can be quickly and detachably fixed under the restriction of the insertion rod, so that the second connecting part and the second fixing part can be quickly disassembled and installed, which is efficient and convenient.

[0012] (4) The slide groove of the utility model is provided with a limit block for limiting the sliding of the slider, and a limit rod that can be inserted into the guide groove. After the slider enters the slide groove, it is limited in the slide groove under the cooperation of the limit rod and the limit block, which can prevent the slider from sliding freely in the slide groove and causing the slider to slide out of the guide groove, thereby ensuring the stability of the connection of the cylinder body.

[0013] (5) The first through hole of the utility model is provided with a first thread inside, and the insertion rod is provided with a second thread that can form a threaded match with the first thread. After the insertion rod is inserted into the first through hole and the second through hole, the first thread and the second thread are threadedly matched and fixed to the second fixing portion. After the first thread and the second thread are matched, the insertion rod can be prevented from slipping out of the first through hole, thereby ensuring the stability of the connection of the push rod end of the cylinder body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to specific embodiments and in conjunction with the accompanying drawings.

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the assembly structure of the first connecting component of the utility model;

[0017] Figure 3 This is a schematic diagram of the assembly structure of the second connecting component of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the first connecting part of the utility model;

[0019] Figure 5 It is a structural schematic diagram of the first fixing part of the utility model;

[0020] Figure 6 It is a structural schematic diagram of the second connecting part of the utility model;

[0021] Figure 7 It is a structural schematic diagram of the second fixing part of the utility model. DETAILED DESCRIPTION

[0022] See Figures 1 to 7 The utility model comprises a cylinder body 1 installed on an injection molding machine; a first connecting assembly 2 is provided on the cylinder body 1, and a second connecting assembly 4 is provided on the push rod end 3 of the cylinder body 1; the first connecting assembly 2 comprises a first connecting portion 21 arranged on the cylinder body 1 and a first fixing portion 22 which can be plugged in with the first connecting portion 21, the second connecting assembly 4 comprises a second connecting portion 41 arranged on the push rod end 3 of the cylinder body 1 and a second fixing portion 42 which can be plugged in with the second connecting portion 41; the cylinder body 1 is detachably fixedly connected to the base of the injection molding machine through the cooperation formed by the first fixing portion 22 and the first connecting portion 21, and the push rod end 3 of the cylinder body 1 is detachably fixedly connected to the frame of the injection molding machine through the cooperation formed by the second fixing portion 42 and the second connecting portion 41; the first fixing portion 22 is provided with a plurality of slide grooves 22 which are arranged uniformly from the center to the outside and extend along the extension direction of the outer contour of the first fixing portion 22 1, a guide groove 222 is also provided on the first fixed part 22, one end of the guide groove 222 extends toward the center of the first fixed part 22 and is connected with each slide groove 221, and the other end of the guide groove 222 passes through the first fixed part 22 and is connected with the outside; the first connecting part 21 is rotatably arranged on the cylinder body 1, and a plurality of sliders 211 are arranged uniformly outward from the center of the first connecting part 21 and can form a sliding fit with the guide groove 222. After the sliding fit with the guide groove 222, each slider 211 corresponds to the slide groove 221 on the first fixed part 22 one by one and can form a sliding fit accordingly; the first connecting part 21 forms a detachable plug-in fit with the first fixed block through the sliding fit between the slider 211 and the guide groove 222 and the sliding plug-in fit between the slider 211 and the slide groove 221, and the cylinder body 1 forms a detachable fixed connection with the injection molding machine base through the detachable plug-in fit formed by the first fixed part 22 and the first connecting part 21.

[0023] The second connecting portion 41 is fixedly arranged on the push rod end 3 of the cylinder body 1, a slot 421 is provided on the second fixing portion 42, and an insert block 411 which can be inserted into the slot 421 is provided on the second connecting portion 41; a first through hole 422 which is connected to the slot 421 at one end and connected to the outside at the other end is provided on the second fixing portion 42, a second through hole 412 which can be connected to the first through hole 422 after being inserted into the slot 421 is provided on the insert block 411, and an insert rod 5 which can be inserted into the first through hole 422 and the second through hole 412 at the same time is also provided; the plug-in fit formed by the second connecting portion 41 and the slot 421 after the insert block 411 is inserted into the first through hole 422 and the second through hole 412 through the insert rod 5 forms a detachable plug-in fit with the second fixing portion 42, and the push rod end 3 of the cylinder body 1 forms a detachable fixed connection with the frame of the injection molding machine through the detachable plug-in fit formed by the second fixing portion 42 and the second connecting portion 41.

[0024] A limit block 223 is provided in the slide groove 221 for limiting the sliding of the slider 211, and a limit rod that can be inserted into the guide groove 222 is provided. After the slider 211 enters the slide groove 221, it is limited in the slide groove 221 under the limiting cooperation of the limit rod and the limit block 223; after the limit rod is inserted into the guide groove 222, it can block all the connections between the slide groove 221 and the guide groove 222.

[0025] The limiting rod may also be provided with threads, and the guide groove 222 may be provided with threads that can form thread fit with the threads on the limiting rod. After the limiting rod is inserted into the guide groove 222, it can be fixed by thread fit to prevent the limiting rod from falling out.

[0026] A first thread 423 is provided inside the first through hole 422, and a second thread 51 which can form a threaded fit with the first thread 423 is provided on the insertion rod 5. After the insertion rod 5 is inserted into the first through hole 422 and the second through hole 412, the threaded fit of the first thread 423 and the second thread 51 fixes it to the second fixing portion 42.

[0027] The working principle of the utility model is as follows: the slider 211 on the first connecting part 21 passes through the guide groove 222 on the first fixing part 22, and the slider 211 corresponds to the slide groove 221 one by one after entering the guide groove 222. The first connecting part 21 is rotated to make the slider 211 enter the slide groove 221, and the limiting rod is inserted into the guide groove 222 to form a match with the limiting block 223 in the slide groove 221, so that the slider 211 is restricted in the slide groove 221, and the first connecting part 21 is fixed to the first fixing part 22; the insert block 411 on the second connecting part 41 is inserted into the insert block 411 on the second fixing part 42 After the slot 421 is inserted, the rod 5 enters the first through hole 422 and the second through hole 412 to be fixed with the second fixing part 42. The rod 5 is rotated so that the second thread 51 on it forms a threaded fit with the first thread 423 in the first through hole 422 and is fixed in the first through hole 422. The cylinder body 1 is detachably fixedly connected to the base of the injection molding machine through the fit formed by the first fixing part 22 and the first connecting part 21, and the push rod end 3 of the cylinder body 1 is detachably fixedly connected to the frame of the injection molding machine through the fit formed by the second fixing part 42 and the second connecting part 41.

[0028] The specific embodiments described above further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic cylinder for an injection molding machine, comprising a cylinder body (1) which can be mounted on the injection molding machine; characterized in that: The oil cylinder body (1) is provided with a first connecting component (2), and the push rod end (3) of the oil cylinder body (1) is provided with a second connecting component (4); the first connecting component (2) comprises a first connecting portion (21) arranged on the oil cylinder body (1) and a first fixing portion (22) which can be plugged into and fit with the first connecting portion (21); the second connecting component (4) comprises a second connecting portion (41) arranged on the push rod end (3) of the oil cylinder body (1) and a second fixing portion (22) which can be plugged into and fit with the second connecting portion (41). The oil cylinder body (1) is connected to the base of the injection molding machine in a detachable fixed manner through the cooperation between the first fixing part (22) and the first connecting part (21), and the push rod end (3) of the oil cylinder body (1) is connected to the frame of the injection molding machine in a detachable fixed manner through the cooperation between the second fixing part (42) and the second connecting part (41); the first fixing part (22) is provided with a plurality of slide grooves (221) which are arranged uniformly from the center to the outside and extend along the extension direction of the outer contour of the first fixing part (22); the first fixing part (2 2) is also provided with a guide groove (222), one end of the guide groove (222) extends toward the center of the first fixed part (22) and is connected to each slide groove (221), and the other end of the guide groove (222) passes through the first fixed part (22) and is connected to the outside; the first connecting part (21) is rotatably arranged on the cylinder body (1), and the first connecting part (21) is provided with a plurality of sliding blocks (211) which are evenly arranged outward from the center of the first connecting part (21) and can form a sliding fit with the guide groove (222), and each sliding block (211) is connected to the guide groove (222) by After sliding engagement with the guide groove (222), the first connecting portion (21) corresponds one-to-one with the slide groove (221) on the first fixing portion (22) and can form a corresponding sliding engagement; the first connecting portion (21) forms a detachable plug-in engagement with the first fixing block through the sliding engagement between the slider (211) and the guide groove (222) and the sliding plug-in engagement between the slider (211) and the slide groove (221); the oil cylinder body (1) forms a detachable fixed connection with the base of the injection molding machine through the detachable plug-in engagement formed by the first fixing portion (22) and the first connecting portion (21).

2. The hydraulic cylinder for an injection molding machine according to claim 1, characterized in that: The second connecting portion (41) is fixedly arranged on the push rod end (3) of the oil cylinder body (1); the second fixing portion (42) is provided with a slot (421); the second connecting portion (41) is provided with an insert block (411) which can be inserted into the slot (421); the second fixing portion (42) is provided with a first through hole (422) whose one end is connected to the slot (421) and the other end is connected to the outside; the insert block (411) is provided with a second through hole (412) which can be connected to the first through hole (422) after being inserted into the slot (421); The insertion rod (5) can be inserted into the first through hole (422) and the second through hole (412) at the same time; the second connecting portion (41) is inserted into the first through hole (422) and the second through hole (412) through the insertion block (411) and the insertion rod (5), and the plug-in fit formed with the slot (421) forms a detachable plug-in fit with the second fixing portion (42); the push rod end (3) of the oil cylinder body (1) forms a detachable fixed connection with the frame of the injection molding machine through the detachable plug-in fit formed by the second fixing portion (42) and the second connecting portion (41).

3. The hydraulic cylinder for an injection molding machine according to claim 1, characterized in that: A limit block (223) for limiting the sliding of the slider (211) is provided in the slide groove (221), and a limit rod that can be inserted into the guide groove (222) is provided. After the slider (211) enters the slide groove (221), it is limited in the slide groove (221) under the limiting cooperation of the limit rod and the limit block (223).

4. The hydraulic cylinder for an injection molding machine according to claim 2, characterized in that: The first through hole (422) is provided with a first thread (423) inside, and the insertion rod (5) is provided with a second thread (51) that can form a threaded fit with the first thread (423). After the insertion rod (5) is inserted into the first through hole (422) and the second through hole (412), the first thread (423) and the second thread (51) are threadedly fitted to be fixed to the second fixing portion (42).

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