Injection system device capable of adaptively adjusting concentricity with inner hole of charging barrel

Abstract

An injection system device capable of adaptively adjusting concentricity with an inner hole of a charging barrel comprises an injection rod and a piston rod connecting seat, a mounting groove is formed in the piston rod connecting seat, a universal adjusting seat with a universal ball groove is arranged in the mounting groove, and the injection rod extends into the mounting groove and comprises a spherical universal joint matched with the universal ball groove. The spherical universal joint and the universal adjusting seat form a universal adjusting mechanism, and the spherical height of the universal ball groove is smaller than the spherical radius of the universal ball groove; the injection device further comprises a locking structure which is arranged on the piston rod connecting base and used for locking the adjusted injection rod. According to the injection device, even if the locking performance of the locking structure becomes poor or fails after the injection device is used for a long time, the locking performance of the locking structure can still be recovered through readjustment, so that the relative fixation between the injection rod and the piston rod connecting seat is ensured, the injection device can be continuously used, and the service life of the injection device is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a die casting machine injection field especially relates to a kind of injection system device that can and material cylinder inner hole self-adapting adjustment concentricity. BACKGROUND

[0002] Die casting machine is a kind of commonly used equipment in forming technical field of mechanical industry, and is a kind of industrial machinery that solid metal castings are obtained after cooling forming by injecting molten metal liquid into die casting mold under pressure. When die casting, first, metal liquid is injected into material cylinder, then the injection rod is pushed forward, and the injection head at the end of the injection rod is used to press the metal liquid into the mold until the required parts are formed.

[0003] Some reasons in practice, such as manufacturing deviation or installation deviation, eventually cause large deviation of the concentricity of the injection rod and the inner hole of the material cylinder, so that the resistance of the injection head is large when running in the material cylinder, the wear of the injection head and the material cylinder is aggravated, the service life is reduced, the operation cost is increased, and the casting quality is also affected.

[0004] Chinese patent with application number 201420404793.9 discloses a horizontal cold chamber die casting machine injection rod mounting structure, which connects the injection rod and the piston rod by a universal joint structure. The universal joint structure includes a ball joint arranged between the injection rod and the piston rod. One end of the ball joint is fixedly connected with the end of the injection rod, and the other end is fixedly arranged on the piston rod. The universal joint structure plays the role of universal adjustment and connection. The injection rod can automatically align with the center axis of the material cylinder during work, overcoming the problem of concentricity. However, as shown in the drawings, the large circle of the ball joint and the ball groove matched with the ball joint on the piston rod is the stress part. The large circle part is prone to wear during the pushing and pulling process of the piston rod. Once there is a large wear, the connection function of the universal joint structure fails, and the entire universal joint structure must be replaced. There is no possibility of reusing by simple maintenance. Therefore, the service life of the entire injection device is relatively short. Figure 4 UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of the prior art, the present application provides an injection device capable of self-adapting adjustment of the concentricity of the inner hole of the material cylinder. The relative fixation between the injection rod and the piston rod connecting seat is realized by using the locking structure. Even if the locking performance of the locking structure deteriorates or fails after long-term use of the injection device, it can still be restored by adjusting again, thereby ensuring the relative fixation between the injection rod and the piston rod connecting seat, allowing the injection device to continue to be used, and thereby improving the service life of the injection device.

[0006] ​The injection system device capable of self-adapting and adjusting the concentricity with the inner hole of the barrel comprises an injection rod and a piston rod connecting seat, the piston rod connecting seat is provided with a mounting groove, a universal adjusting seat provided with a universal ball groove is arranged in the mounting groove, the injection rod extends into the mounting groove and comprises a spherical universal joint matched with the universal ball groove, the spherical universal joint and the universal adjusting seat form a universal adjusting mechanism, and the spherical height of the universal ball groove is smaller than the spherical radius of the universal ball groove.

[0007] The injection device further comprises a locking structure arranged on the piston rod connecting seat and used for locking the adjusted injection rod.

[0008] Preferably, the injection rod further comprises a rod body and an injection rod seat connected to the rod body, the spherical universal joint is connected to the injection rod seat, and the injection rod seat and the rod body are detachably connected.

[0009] Preferably, the injection rod seat is sleeved on the rod body and connected to the rod body through a threaded connection structure.

[0010] Preferably, the universal adjusting seat and the mounting groove are detachably connected.

[0011] Preferably, a retreat-stop step is arranged at the slot opening of the mounting groove, and the injection rod seat is provided with an acting part used for acting on the retreat-stop step.

[0012] Preferably, the piston rod connecting seat is further provided with a lateral insertion opening communicated with the mounting groove and used for laterally inserting the injection rod and the universal adjusting seat into the mounting groove.

[0013] Preferably, the locking structure comprises a plurality of locking screws, and the piston rod connecting seat is provided with threaded holes corresponding to the locking screws.

[0014] In summary, the utility model has the following beneficial effects:

[0015] 1: The utility model discloses a piston rod and a piston rod connecting seat are provided with a universal adjusting mechanism only having a universal adjusting function to realize the adjustment of the concentricity between the piston rod and the inner hole of the barrel, meanwhile, a locking structure is additionally arranged to realize the relative fixation between the piston rod and the piston rod connecting seat, compared with the prior art that the piston rod and the piston rod connecting seat are simultaneously connected and adjusted through a universal connecting structure, even if the locking performance of the locking structure is deteriorated or fails after long-term use of the injection device, the utility model can still realize the recovery through the retightening of the locking structure, thereby ensuring the relative fixation between the piston rod and the piston rod connecting seat, making the injection device continue to be used, and prolonging the service life of the injection device.

[0016] 2: The utility model discloses, the injection rod contains the rod body and is connected to the injection rod seat of rod body, the spherical universal joint is connected to the injection rod seat specifically, and the injection rod seat is detachably connected with the rod body, thereby when the injection rod seat appears damage, can guarantee the reuse of the rod body too. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structural schematic diagram of injection device in example;

[0018] Figure 2 It is the explosion schematic diagram of injection device;

[0019] Figure 3 It is the structural schematic diagram of universal adjusting seat;

[0020] Figure 4 It is the structural diagram of universal connecting structure in background art. DETAILED DESCRIPTION

[0021] The utility model will be further explained by specific embodiment in combination with the drawings below.

[0022] Example:

[0023] A kind of injection system device that can and barrel inner hole self-adaptive adjustment concentricity, as shown in Figures 1-3 It contains injection rod 1, piston rod connecting seat 2, installation groove 21 is equipped on piston rod connecting seat 2, universal adjusting seat 3 with universal ball groove 31 is arranged in installation groove 21, universal adjusting seat 3 can be but not limited to block structure, injection rod 1 is inserted into the installation groove 21, injection rod 1 contains the spherical universal joint 11 matched with universal ball groove 31, i.e. spherical universal joint 11 and universal adjusting seat 3 form universal adjusting mechanism, the spherical height H of universal ball groove 31 is less than the spherical radius R of universal ball groove 31, so that, spherical universal joint 11 and universal ball groove 31 are not connected, spherical universal joint 11 is only allowed to carry out universal adjustment on universal ball groove 31, directly avoid the phenomenon that universal adjusting mechanism composed of spherical universal joint 11 and universal ball groove 31 appears big circle structure and big circle wear, when injection rod 1 and barrel inner hole are not concentric, can carry out once pressure test operation, when pressure testing, universal adjusting mechanism can be according to the concentricity of injection rod 1, self-adaptively adjust the position of injection rod 1, make its and the concentricity of barrel inner hole consistent.

[0024] Injection device also contains locking structure 4 set on piston rod connecting seat 2, locking structure 4 is used to lock the injection rod 1 after adjustment, makes injection rod 1 and piston rod connecting seat 2 relative fixed, and guarantee the concentricity of injection rod 1 and barrel inner hole does not change, the most commonly used one locking structure 4, as shown in the drawing Figure 2As shown, the locking structure 4 comprises a plurality of locking screws 41 arranged around the injection rod 1, the piston rod connecting seat 2 is provided with a plurality of threaded holes for mounting the plurality of locking screws 41, and the plurality of locking screws 41 are locked to the surface of the injection rod 1 after penetrating the piston rod connecting seat 2, thereby jointly locking the injection rod 1 from multiple directions. The locking structure 4 realizes the relative fixation of the injection rod 1 and the piston rod connecting seat 2 through the locking function. Compared with the prior art, the injection rod and the piston rod connecting seat are connected through a universal joint structure. Even if the locking performance of the locking structure 4 deteriorates or fails after long-term use of the injection device, it can still be restored through retightening, thereby ensuring the relative fixation between the injection rod 1 and the piston rod connecting seat 2 and enabling the injection device to continue to be used, thereby prolonging the service life of the injection device.

[0025] The injection rod 1 further comprises a rod body 12, and the spherical universal joint 11 can be directly connected to the rod body 12. At this time, the locking screws 41 in the locking structure 4 are specifically locked to the rod body 12 of the injection rod 1 when locked. In this embodiment, the injection rod 1 further comprises an injection rod seat 13 connected to the rod body 12, and the spherical universal joint 11 is specifically connected to the injection rod seat 13. The locking screws 41 in the locking structure 4 are specifically locked to the injection rod seat 13 of the injection rod 1 when locked. The injection rod seat 13 and the rod body 12 are detachably connected, thereby ensuring the reuse of the rod body 12 when the injection rod seat 13 is damaged. The injection rod seat 13 is specifically sleeved on the rod body 12, and the two are connected through a threaded connection structure, thereby facilitating the connection of the two.

[0026] In this embodiment, the universal adjusting seat 3 and the mounting groove 21 are detachably connected, thereby ensuring the reuse of the piston rod connecting seat 2 when the universal adjusting seat 3 is worn. Specifically, a through connecting hole 24 can be arranged at the groove bottom of the mounting groove 21, and a fastener connected with the universal adjusting seat 3 is arranged in the mounting hole 24. The fastener can be but is not limited to a bolt.

[0027] A retreat-stop step 22 is further arranged at the slot opening of the mounting groove 21, and the injection rod seat 13 is provided with an acting part 14 for acting with the retreat-stop step 22. Generally, sufficient molten metal liquid is injected into the barrel for the injection rod 1 to be pressed into the mold. After the injection is completed, the barrel often remains molten metal liquid. During the resetting process of the piston rod connecting seat 2, even if the locking performance of the locking structure 4 suddenly fails, the injection rod 1 can be prevented from being withdrawn from the mounting groove 21 through the action of the retreat-stop step 22, thereby enabling the injection rod 1 to be pulled out outwardly during the resetting process, preventing the injection rod 1 from being in contact with the residual molten metal liquid in the barrel for a long time, reducing the carbonization and corrosion of the injection head on the end of the injection rod 1 by the molten metal liquid, and prolonging the service life of the injection head on the end of the injection rod 1 to a certain extent.

[0028] On the basis of the presence of the stop step 22, it is more preferable that the threaded hole for installing the locking screw 41 penetrates the stop step 22, that is, the locking screw 41 is installed at a position where the thickness of the piston rod connecting seat 2 is relatively large, and the position for installing the locking screw 41 has better deformation resistance.

[0029] In order to facilitate the installation of the universal adjusting seat 3, the injection rod 1 and other components into the installation groove 21, the piston rod connecting seat 2 is further provided with a lateral insertion opening 23 which is connected to the installation groove 21 and is used for laterally inserting the injection rod 1 and the universal adjusting seat 3 into the installation groove 21.

[0030] The above embodiments only describe the preferred embodiments of the present application, and do not limit the concept and scope of the present application. Various modifications and improvements to the technical solutions of the present application made by those skilled in the art without departing from the design concept of the present application shall fall within the protection scope of the present application, and the technical content claimed by the present application has been fully recorded in the claims.

Claims

1. An injection system device capable of self-adapting to the concentricity of the inner hole of the barrel, comprising an injection rod (1) and a piston rod connecting seat (2), characterized in that, The piston rod connecting seat (2) is provided with an installation groove (21), a universal adjusting seat (3) with a universal ball groove (31) is arranged in the installation groove (21), the injection rod (1) extends into the installation groove (21) and contains a spherical universal joint (11) matched with the universal ball groove (31), the spherical universal joint (11) and the universal adjusting seat (3) form a universal adjusting mechanism, and the spherical height of the universal ball groove (31) is smaller than the spherical radius of the universal ball groove (31); The injection device further comprises a locking structure (4) arranged on the piston rod connecting seat (2) and used for locking the adjusted injection rod (1).

2. The injection system of claim 1, wherein the sleeve is configured to self- adjust to the inner bore of the barrel. 5 The injection rod (1) further comprises a rod body (12) and an injection rod seat (13) connected to the rod body (12), the spherical universal joint (11) is connected to the injection rod seat (13), and the injection rod seat (13) and the rod body (12) are detachably connected.

3. The injection system of claim 2, wherein the sleeve is configured to self- adjust to the inner bore of the barrel. 3 The injection rod seat (13) is sleeved on the rod body (12) and connected through a threaded connection structure.

4. The injection system device according to claim 1, which can adaptively adjust the concentricity with the inner hole of the barrel, is characterized in that, The universal adjusting seat (3) and the installation groove (21) are detachably connected.

5. The injection system of claim 2, wherein the sleeve is configured to self- adjust to the inner bore of the barrel. A retreat-stop step (22) is arranged at the slot opening of the installation groove (21), and the injection rod seat (13) is provided with an acting part (14) for acting on the retreat-stop step (22).

6. The injection system of claim 1, wherein the sleeve is configured to self- adjust to the inner bore of the barrel. The piston rod connecting seat (2) is further provided with a lateral insertion opening (23) communicated with the installation groove (21) and used for laterally inserting the injection rod (1) and the universal adjusting seat (3) into the installation groove (21).

7. The injection system of claim 1, wherein the sleeve is configured to self- adjust to the inner bore of the barrel. The locking structure (4) comprises a plurality of locking screws (41), and the piston rod connecting seat (2) is provided with threaded holes corresponding to the locking screws (41).

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