Plunger type mold locking oil cylinder of two-plate machine

Abstract

The utility model relates to the technical field of two-plate machines, and discloses a two-plate machine plunger type mold locking oil cylinder which comprises a cylinder body and a piston rod, a rear cover is installed at the rear end of the cylinder body, a front cover is fixedly installed at the front end of the cylinder body, a piston plate is arranged in the cylinder body, the end of the piston rod is inserted into the cylinder body through the piston plate, and an annular clamping block is installed on the rear cover. The push rod is driven to push the sealing block through thread fit, it is ensured that the sealing block effectively seals the piston rod and the end of the barrel, the sealing effect is improved, and leakage of a hydraulic system is effectively prevented. The high stability of the mold locking oil cylinder in the running process is ensured, the situation that the stability and the forming quality of a mold are affected due to unstable running is avoided, the unlocking rod is controlled through the driving button to release the locking ball, the locking state is conveniently relieved, and the operation convenience and flexibility are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of two-platen machines, in particular to a two-platen machine injection-plunger type mold locking oil cylinder. Background Art

[0002] Two-platen machine refers to the injection molding mechanism in an injection molding machine. An injection molding machine is a machine that uses plastic or metal materials to pressurize molten raw materials into a mold and solidify them after cooling. The injection molding mechanism includes components such as a syringe, a nozzle, a screw, and two plates.

[0003] During the injection molding process, the raw material will be pushed to the nozzle by the screw, and then enter the mold cavity through the nozzle, where the plastic is cooled and formed. The two plates refer to the two main components of the mold. During the injection molding process, the two plates of the mold will open and close the mold cavity through the opening and closing action of the injection molding machine to complete the molding process of the plastic product.

[0004] The two-platen plunger clamping cylinder is a key component of the injection molding machine. It is controlled by the hydraulic system to fix the mold on the machine and ensure the stability and sealing of the mold during the molding process. Its working principle is to use the function of the hydraulic cylinder to enable the clamping plate to close and open quickly and accurately, thereby completing the molding process of plastic products.

[0005] The sealing effect of some existing clamping cylinders may be reduced after long-term use, which may cause leakage in the hydraulic system, thus affecting the stability of the mold and the molding quality. In addition, leakage may also cause a drop in the pressure of the hydraulic system, affecting the accuracy and speed of the clamping action, and even causing equipment damage or safety hazards; therefore, it does not meet the existing needs. For this reason, we propose a two-platen injection plug type clamping cylinder. Utility Model Content

[0006] The utility model provides a two-plate injection-plug type clamping cylinder, which has the beneficial effect of effectively preventing leakage of the hydraulic system, and solves the problem mentioned in the above background technology that the sealing effect of some existing clamping cylinders may be reduced after long-term use, which may cause leakage of the hydraulic system, thereby affecting the stability and molding quality of the mold. In addition, leakage may also cause the pressure of the hydraulic system to drop, affecting the accuracy and speed of the clamping action, and even causing equipment damage or safety hazards.

[0007] The utility model provides the following technical solution: a two-plate machine injection plunger type clamping oil cylinder, comprising a cylinder and a piston rod, a rear cover is installed at the rear end of the cylinder, a front cover is fixedly installed at the front end of the cylinder, a piston plate is arranged in the cylinder, the end of the piston rod is inserted in the cylinder through the piston plate, an annular clamping block is installed on the rear cover, an annular clamping groove corresponding to the annular clamping block is opened in the cylinder, the annular clamping block is engaged with the annular clamping groove, and a sealing component is arranged in the rear cover.

[0008] As an optional solution for a two-plate injection plunger type clamping cylinder described in the utility model, the sealing assembly includes a sealing block installed in the rear cover, the sealing block is located at the end of the piston rod and the cylinder body, a push rod is installed on the side of the sealing block, one end of the push rod is fixedly installed on the sealing block, and the other end of the push rod is fixedly installed on the inner wall of the rear cover, an internal thread section is arranged in the annular groove, an external thread section is arranged outside the annular block, and the external thread section is threadedly matched with the internal thread section.

[0009] As an optional solution for a two-platen injection-plunger locking cylinder described in the utility model, the sealing block is configured as a round rubber block, the diameter of the sealing block is larger than the diameter of the cylinder body, and the push rod is driven to push the sealing block through the threaded cooperation of the external thread section and the internal thread section.

[0010] As an optional solution of a two-platen injection plug type locking cylinder described in the utility model, wherein: a recovery groove is opened in the annular clamping block, a locking ball is arranged in the recovery groove, a locking groove corresponding to the locking ball is opened in the annular clamping groove, the locking groove is connected to the annular clamping groove, and the locking ball is engaged with the locking groove.

[0011] As an optional solution for a two-platen injection plunger type clamping cylinder described in the utility model, a telescopic rod is arranged in the recovery groove, a spring is arranged on the outer sleeve of the telescopic rod, one end of the spring is fixedly connected to the locking ball, and the other end of the spring is fixedly connected to the inner wall of the recovery groove.

[0012] As an optional solution of a two-plate injection plunger type locking cylinder described in the utility model, wherein: an unlocking groove is opened in the rear cover near the locking groove, the unlocking groove is connected to the locking groove, an unlocking rod is movably inserted in the unlocking groove, the unlocking rod is located on the upper side of the locking groove, and a driving button for driving the unlocking rod is installed on the top of the unlocking rod, and the driving button is located in the unlocking groove.

[0013] As an optional solution of a two-plate injection plunger type clamping cylinder described in the utility model, wherein: a plurality of grooves are opened on the outside of the piston rod, a first ball is arranged in the groove, a second ball corresponding to the first ball is installed in the front cover, and the first ball is in contact with the second ball.

[0014] As an optional solution of a two-platen injection plug type clamping cylinder described in the utility model, a sealing strip is installed in the front cover, and the sealing strip is set as a rubber strip.

[0015] The utility model has the following beneficial effects:

[0016] 1. The two-plate injection plug type clamping cylinder drives the push rod to push the sealing block through the threaded cooperation, ensuring that the sealing block effectively seals the piston rod and the end of the cylinder, improving the sealing effect, and effectively preventing hydraulic system leakage. The clamping design of the annular clamping block and the clamping groove, as well as the clamping locking device of the locking ball and the locking groove, ensure that the clamping cylinder has strong stability during operation, avoiding the influence of mold stability and molding quality due to unstable operation. The unlocking rod is controlled by the driving button to release the locking ball, which is convenient for releasing the locking state and improving the convenience and flexibility of operation.

[0017] 2. The two-plate injection-plug locking cylinder has the first ball and the second ball, which makes the piston rod more stable during movement, reduces instability, and improves the operating stability of the equipment. The installation of rubber sealing strips further enhances the sealing effect, prevents leakage of the hydraulic system, and ensures the stability and safety of the system operation. Since the friction and wear of the piston rod are reduced, the maintenance requirements of the equipment are reduced, saving maintenance costs and time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the main three-dimensional structure of the utility model.

[0019] Figure 2 It is a schematic diagram of the main plane structure of the utility model.

[0020] Figure 3 It is a schematic diagram of the main body cutaway structure of the utility model.

[0021] Figure 4 It is a schematic diagram of the enlarged structure of point A of the utility model.

[0022] In the figure: 100, cylinder; 110, piston rod; 111, groove; 112, first ball; 120, annular groove; 200, rear cover; 210, annular block; 300, front cover; 310, second ball; 320, sealing strip; 400, sealing assembly; 410, sealing block; 420, push rod; 430, internal thread section; 440, external thread section; 450, recovery groove; 451, locking ball; 452, telescopic rod; 453, spring; 460, locking groove; 470, unlocking groove; 471, unlocking rod; 472, unlocking button. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Embodiment 1: This embodiment is intended to promote the solution of the problem that the sealing effect of some existing clamping cylinders may be reduced after long-term use, which may cause leakage in the hydraulic system, thereby affecting the stability of the mold and the molding quality. In addition, leakage may also cause the pressure of the hydraulic system to drop, affecting the accuracy and speed of the clamping action, and even causing equipment damage or safety hazards. Please refer to Figure 1 - Figure 4 A two-plate injection-plunger locking cylinder comprises a cylinder 100 and a piston rod 110. A rear cover 200 is installed at the rear end of the cylinder 100, and a front cover 300 is fixedly installed at the front end of the cylinder 100. A piston plate is arranged in the cylinder 100, and the end of the piston rod 110 is plugged into the cylinder 100 through the piston plate. An annular clamping block 210 is installed on the rear cover 200. An annular clamping groove 120 corresponding to the annular clamping block 210 is opened in the cylinder 100, and the annular clamping block 210 is engaged with the annular clamping groove 120. A sealing assembly 400 is arranged in the rear cover 200.

[0025] The sealing assembly 400 includes a sealing block 410 installed in the rear cover 200, the sealing block 410 is located at the ends of the piston rod 110 and the cylinder 100, a push rod 420 is installed on the side of the sealing block 410, one end of the push rod 420 is fixedly installed on the sealing block 410, and the other end of the push rod 420 is fixedly installed on the inner wall of the rear cover 200, an internal thread section 430 is provided in the annular groove 120, and an external thread section 440 is provided outside the annular block 210, and the external thread section 440 is threadedly matched with the internal thread section 430.

[0026] The sealing block 410 is configured as a circular rubber block, the diameter of which is greater than the diameter of the cylinder 100, and the outer thread section 440 and the inner thread section 430 are threadedly matched, thereby driving the push rod 420 to push the sealing block 410. A recovery groove 450 is provided in the annular clamping block 210, a locking ball 451 is provided in the recovery groove 450, a locking groove 460 corresponding to the locking ball 451 is provided in the annular clamping groove 120, the locking groove 460 is connected to the annular clamping groove 120, and the locking ball 451 is engaged with the locking groove 460. A telescopic rod 452 is provided in the recovery groove 450, and a spring 453 is provided on the outer sleeve of the telescopic rod 452, one end of the spring 453 is fixedly connected to the locking ball 451, and the other end of the spring 453 is fixedly connected to the inner wall of the recovery groove 450.

[0027] An unlocking slot 470 is provided in the back cover 200 near the locking slot 460. The unlocking slot 470 is connected to the locking slot 460. An unlocking rod 471 is movably inserted in the unlocking slot 470. The unlocking rod 471 is located on the upper side of the locking slot 460. A driving button for driving the unlocking rod 471 is installed on the top of the unlocking rod 471. The driving button is located in the unlocking slot 470.

[0028] First, insert the annular clamping block 210 into the annular clamping groove 120 to ensure that the clamping is tight to ensure that the subsequent actions are carried out normally. Install the circular rubber sealing block 410 in the back cover 200 to ensure that it is located between the piston rod 110 and the end of the cylinder 100, so that the hydraulic system can be effectively prevented from leaking. One end of the push rod 420 is fixed on the sealing block 410, and the other end is fixed on the inner wall of the back cover 200 to ensure that the push rod 420 can smoothly push the sealing block 410. At this time, the back cover 200 is rotated to thread the external thread section 440 and the internal thread section 430, and the push rod 420 is driven by rotating the thread to squeeze the sealing block 410 to improve the sealing effect. When the back cover 200 is rotated to a certain extent, the locking ball 451 will reach the locking groove 460. At this time, the locking ball 451 originally in the recovery groove 450 will drive the locking ball 451 to engage with the locking groove 460 due to the elastic force of the telescopic rod 452 and the spring 453, thereby locking. When unlocking is required, the moving driving button controls the unlocking rod 471 to push the locking ball 451 downward, thereby retracting the locking ball 451 from the locking groove 460 into the recovery groove 450.

[0029] In this embodiment: the push rod 420 is driven by threaded cooperation to push the sealing block 410, ensuring that the sealing block 410 effectively seals the piston rod 110 and the end of the cylinder 100, improving the sealing effect, and effectively preventing hydraulic system leakage. The locking design of the annular block 210 and the slot, as well as the locking device of the locking ball 451 and the locking slot 460, ensure that the locking cylinder has strong stability during operation, avoiding the influence of unstable operation on the stability and molding quality of the mold, and the unlocking rod 471 is controlled by the driving button to release the locking ball 451, which is convenient for releasing the locking state, thereby improving the convenience and flexibility of operation.

[0030] Embodiment 2: This embodiment is intended to promote the solution of the problem that the service life of the piston rod 110 is reduced due to the long-term friction of the piston rod 110. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1 - Figure 4 .

[0031] The piston rod 110 is provided with a plurality of grooves 111, in which first balls 112 are arranged, and the front cover 300 is provided with second balls 310 corresponding to the first balls 112, and the first balls 112 are in contact with the second balls 310. A sealing strip 320 is installed in the front cover 300, and the sealing strip 320 is provided as a rubber strip.

[0032] In this embodiment: the provision of the first ball 112 and the second ball 310 makes the piston rod 110 more stable during movement, reduces instability, and improves the operating stability of the equipment. The installation of the rubber sealing strip 320 further enhances the sealing effect, prevents leakage of the hydraulic system, and ensures the stability and safety of the system operation. Since the friction and wear of the piston rod 110 are reduced, the maintenance requirements of the equipment are reduced, saving maintenance costs and time.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A two-platen injection-plunger type mold-locking oil cylinder, comprising a cylinder (100) and a piston rod (110), characterized in that: A rear cover (200) is installed at the rear end of the cylinder (100), and a front cover (300) is fixedly installed at the front end of the cylinder (100). A piston plate is arranged in the cylinder (100), and the end of the piston rod (110) is inserted into the cylinder (100) through the piston plate. An annular clamping block (210) is installed on the rear cover (200), and an annular clamping groove (120) corresponding to the annular clamping block (210) is opened in the cylinder (100), and the annular clamping block (210) is engaged with the annular clamping groove (120). A sealing assembly (400) is arranged in the rear cover (200).

2. A two-platen plunger-type clamping cylinder according to claim 1, characterized in that: The sealing assembly (400) includes a sealing block (410) installed in the rear cover (200), the sealing block (410) is located at the end of the piston rod (110) and the cylinder (100), a push rod (420) is installed on the side of the sealing block (410), one end of the push rod (420) is fixedly installed on the sealing block (410), and the other end of the push rod (420) is fixedly installed on the inner wall of the rear cover (200), an internal thread section (430) is arranged in the annular groove (120), and an external thread section (440) is arranged outside the annular block (210), and the external thread section (440) is threadedly matched with the internal thread section (430).

3. A two-platen plunger-type clamping cylinder according to claim 2, characterized in that: The sealing block (410) is configured as a round rubber block. The diameter of the sealing block (410) is greater than the diameter of the cylinder (100). The external thread section (440) and the internal thread section (430) are threadedly matched, thereby driving the push rod (420) to push the sealing block (410).

4. A two-platen plunger-type clamping cylinder according to claim 2, characterized in that: A recovery groove (450) is provided in the annular clamping block (210), a locking ball (451) is provided in the recovery groove (450), a locking groove (460) corresponding to the locking ball (451) is provided in the annular clamping groove (120), the locking groove (460) is communicated with the annular clamping groove (120), and the locking ball (451) is engaged with the locking groove (460).

5. A two-platen plunger-type clamping cylinder according to claim 4, characterized in that: A telescopic rod (452) is arranged in the recovery groove (450), and a spring (453) is arranged on the outer sleeve of the telescopic rod (452). One end of the spring (453) is fixedly connected to the locking ball (451), and the other end of the spring (453) is fixedly connected to the inner wall of the recovery groove (450).

6. A two-platen plunger-type clamping cylinder according to claim 4, characterized in that: The rear cover (200) is provided with an unlocking slot (470) near the locking slot (460), the unlocking slot (470) is communicated with the locking slot (460), an unlocking rod (471) is movably inserted in the unlocking slot (470), the unlocking rod (471) is located on the upper side of the locking slot (460), and a driving button for driving the unlocking rod (471) is installed at the top end of the unlocking rod (471), and the driving button is located in the unlocking slot (470).

7. The two-platen plunger-type clamping cylinder according to claim 1, characterized in that: The piston rod (110) is provided with a plurality of grooves (111) on the outside, and a first ball (112) is arranged in the groove (111). A second ball (310) corresponding to the first ball (112) is installed in the front cover (300), and the first ball (112) is in contact with the second ball (310).

8. The two-platen plunger-type clamping cylinder according to claim 7, characterized in that: A sealing strip (320) is installed in the front cover (300), and the sealing strip (320) is configured as a rubber strip.

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