Drawing and pulling rod structure of two-plate type injection molding machine

Abstract

The utility model discloses a drawing rod structure of a two-plate type injection molding machine, which is characterized in that the arrangement of a transverse supporting seat provides a solid mounting platform for subsequent parts such as a guide rail and a sliding block, so that the stability and the bearing capacity of the whole structure are ensured. Due to the arrangement of the guide rail, an accurate sliding track is provided for the sliding block, and the stability and linearity of the sliding block in the pulling process are guaranteed. And the sliding block is arranged, so that the mold locking oil cylinder assembly can be borne and driven to perform drawing action. And the first driving assembly is arranged so that the sliding block can be flexibly driven to slide to achieve drawing and pulling of the mold locking oil cylinder assembly. A first oil cylinder locking clamp and a second oil cylinder locking clamp are arranged, so that locking and loosening of the mold locking oil cylinder assembly are conveniently achieved through matched action of the first oil cylinder locking clamp and the second oil cylinder locking clamp, it is ensured that the mold locking oil cylinder assembly is stably attached to the fixed mold plate during injection molding work, and the injection molding stability is improved; and when the mold needs to be replaced, the mold locking oil cylinder assembly can be loosened, so that the mold is convenient to replace, the working efficiency is improved, and the service life of the machine is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of injection molding, and particularly to a pull rod structure of a two-platen injection molding machine. Background Art

[0002] An injection molding machine is a special plastic molding machine, which can be roughly divided into a two-platen injection molding machine, a horizontal injection molding machine, a vertical injection molding machine, and an angular injection molding machine according to the structural form.

[0003] With the development of science and technology, the injection molding industry is developing, and the structure of injection molding machines is also being optimized day by day. In traditional large two-platen injection molding machines, due to the large weight of the mold clamping cylinder and the tie rods, resistance is often encountered when it is necessary to extract or move them, and even smooth operation is impossible. At the same time, long-term heavy-load use is also likely to cause excessive wear of components, affecting the service life and working efficiency of the injection molding machine.

[0004] Therefore, how to overcome the above-mentioned defects has become an important issue that needs to be solved urgently by those skilled in the art. Content of the Utility Model

[0005] The utility model provides a pull rod structure of a two-platen injection molding machine. By designing an efficient pull rod structure and utilizing the synergistic effect of a horizontal support seat, a guide rail, a slider, and a first driving component, the smooth and rapid extraction and retraction of the mold clamping cylinder assembly are realized, effectively solving the operation problems caused by the large weight.

[0006] A pull rod structure of a two-platen injection molding machine for pulling and retracting the mold clamping cylinder assembly 101 of a two-platen injection molding machine, comprising:

[0007] A horizontal support seat 1, connected to the fixed template 102 of the two-platen injection molding machine and extending horizontally outward from the outer side of the fixed template 102;

[0008] A guide rail 2, extending horizontally and installed on the horizontal support seat 1;

[0009] A slider 3, sliding horizontally along the guide rail 2 and used for carrying and driving the mold clamping cylinder assembly 101 to approach or move away from the fixed template 102;

[0010] A first driving component 4, connected to the slider 3 and used for driving the slider 3 and the mold clamping cylinder assembly 101 to slide horizontally along the guide rail 2;

[0011] A first oil cylinder locking clamp 5, connected to the mold clamping cylinder assembly 101;

[0012] A second oil cylinder locking clamp 6, connected to the fixed template 102;

[0013] Among them, the first oil cylinder locking fixture 5 and the second oil cylinder locking fixture 6 are used to lock and fit the mold clamping oil cylinder assembly 101 on the fixed template 102 through the cooperative action of the two during the injection molding operation, and are used to loosen the mold clamping oil cylinder assembly 101 when mold change is required.

[0014] Preferably, a support frame 7 is provided at the bottom of the horizontal support base 1. The support frame 7 includes a first horizontal support plate 71 provided at the bottom, a plurality of floor feet 72 connected to the bottom of the first horizontal support plate 71, a vertical support column 73 vertically extending from the top of the first horizontal support plate 71, and a second horizontal support plate 74 installed at the top of the vertical support column 73. The top surface of the second horizontal support plate 74 is in contact with the horizontal support base 1.

[0015] Preferably, triangular strengthening support frames 75 are provided between the top of the first horizontal support plate 71 and the position near the bottom of the vertical support column 73, and between the bottom of the second horizontal support plate 74 and the position near the top of the vertical support column 73.

[0016] Preferably, the horizontal support base 1 is provided with a horizontal support bottom 11 that fits the top surface of the second horizontal support plate 74, a convex installation part 12 extending upward from the horizontal support bottom 11 for installing the guide rail 2 thereon, and strengthening rib parts 13 connected between the left and right sides of the horizontal support bottom 11 and the convex installation part 12.

[0017] Preferably, the first driving assembly 4 is a pull-rod type oil cylinder capable of realizing a pulling and pushing action.

[0018] Preferably, the slider 3 and the mold clamping oil cylinder assembly 101 are fixedly connected together through a connecting plate 8. The slider 3 is fixedly connected to the first half of the connecting plate 8. The cylinder sleeve of the pull-rod type oil cylinder is fixedly connected to the second half of the connecting plate 8, and the end of the piston rod of the pull-rod type oil cylinder far from the cylinder sleeve is connected to the fixed template 102.

[0019] Preferably, a spherical plain bearing 1011 is connected to the end of the piston rod far from the cylinder sleeve and is fixedly connected to the fixed template 102 through a pin 9. A part of the piston rod passes through the second horizontal support plate 74, and the fixed template 102 is recessed with an avoidance groove 1021 for avoiding the part of the piston rod passing through. A connecting seat 1022 for inserting the pin 9 is connected to one side wall of the avoidance groove 1021.

[0020] Preferably, the first oil cylinder locking fixture 5 is connected to the mold clamping oil cylinder assembly 101 through a detachable first fixture support 51; the second oil cylinder locking fixture 6 is connected to the fixed template 102 through a detachable second fixture support 61.

[0021] Preferably, the first oil cylinder locking clamp 5 is provided with a first clamping block portion 50 capable of moving forward and backward and left and right, and the second oil cylinder locking clamp 6 is provided with a second clamping block portion 610 capable of moving forward and backward and left and right.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] 1. The setting of the transverse support seat of the pull-out rod structure in this case, as the basic support component of the entire pull-out rod structure, the transverse support seat is firmly connected to the fixed template and extends laterally outward, providing a solid installation platform for subsequent guide rails, sliders and other components, ensuring the stability and load-bearing capacity of the overall structure. The setting of the guide rail provides a precise sliding track for the slider, ensuring the stability and linearity of the slider during the pulling and pulling process, avoiding operational errors and component damage caused by offset or shaking. The setting of the slider can carry and drive the clamping cylinder assembly to perform pulling and pulling actions. The setting of the first drive assembly is to flexibly drive the sliding of the slider to realize the pulling and pulling of the clamping cylinder assembly. The first cylinder locking clamp and the second cylinder locking clamp are set so that the locking and loosening of the mold locking cylinder assembly can be achieved through the cooperation of the two, ensuring that the mold locking cylinder assembly is firmly attached to the fixed template during injection molding, thereby improving the stability of injection molding; when the mold needs to be changed, the mold locking cylinder assembly can be loosened to facilitate the replacement of the mold, which can not only improve work efficiency but also extend the service life of the machine. In this way, this case optimizes the pull-out rod structure of the pull-out mold locking cylinder assembly by designing an efficient pull-out rod structure and utilizing the synergistic effect of the transverse support seat, guide rail, slider and the first drive assembly, so that the pull-out action of the mold locking cylinder assembly is smoother and more precise, and the mold locking cylinder assembly can be pulled out smoothly and quickly, effectively solving the problem of being unable to be pulled out or excessive wear due to heavy weight, thereby improving the working efficiency of the injection molding machine.

[0024] 2. The support frame of this case provides additional support force for the lateral support seat through its stable structure, effectively enhancing the stability and load-bearing capacity of the entire pull-out rod structure. Specifically, the provision of multiple footings at the bottom of the lateral support seat of the support frame can distribute the load to multiple footings, thereby reducing the pressure borne by each footing, and improving the durability and service life of the entire structure. The provision of the vertical support column can enhance the vertical support capacity of the support frame and has a certain anti-seismic effect, so that the pull-out rod structure can be more stable and easier to pull when pulling the clamping cylinder assembly. The fitting arrangement of the top surface of the second lateral support plate and the lateral support seat ensures a tight connection between the support frame and the lateral support seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a planar structural schematic diagram of the pull-out rod structure in this case installed on the fixed template.

[0026] Figure 2 It is a side view of the pull rod structure of this case installed on the fixed mold plate.

[0027] Figure 3 It is a schematic three-dimensional structure diagram of the pull rod structure of this case installed on the fixed mold plate.

[0028] Figure 4 It is a schematic structure diagram of the first oil cylinder locking fixture of this case.

[0029] Figure 5 It is a schematic structure diagram of the second oil cylinder locking fixture of this case. Specific implementation manner

[0030] The following further details the features of the present utility model and other related features through embodiments for the understanding of those skilled in the same industry:

[0031] As Figures 1 to 5 shown, a pull rod structure of a two-platen injection molding machine for pulling the mold clamping oil cylinder assembly 101 of the two-platen injection molding machine includes:

[0032] A horizontal support base 1, connected to the fixed mold plate 102 of the two-platen injection molding machine and extending horizontally outward from the outer side surface of the fixed mold plate 102;

[0033] A guide rail 2, extending horizontally and installed on the horizontal support base 1;

[0034] A slider 3, sliding horizontally along the guide rail 2, for carrying and driving the mold clamping oil cylinder assembly 101 to approach or move away from the fixed mold plate 102;

[0035] A first driving component 4, connected to the slider 3, for driving the slider 3 and the mold clamping oil cylinder assembly 101 to slide horizontally along the guide rail 2 to realize the pulling action of the mold clamping oil cylinder assembly;

[0036] A first oil cylinder locking fixture 5, connected to the mold clamping oil cylinder assembly 101;

[0037] A second oil cylinder locking fixture 6, connected to the fixed mold plate 102;

[0038] Wherein, the first oil cylinder locking fixture 5 and the second oil cylinder locking fixture 6 are used to lock and fit the mold clamping oil cylinder assembly 101 on the fixed mold plate 102 through the cooperative action of the two during the injection molding operation, and are used to loosen the mold clamping oil cylinder assembly 101 when mold changing is required.

[0039] As described above, the transverse support seat 1 of the pull-and-pull rod structure of this case is provided as the basic support component of the entire pull-and-pull rod structure. The transverse support seat is firmly connected to the fixed template and extends laterally outward, providing a solid installation platform for subsequent guide rails, sliders and other components, ensuring the stability and load-bearing capacity of the overall structure. The setting of the guide rail 2 provides a precise sliding track for the slider, ensuring the stability and linearity of the slider during the pulling and pulling process, and avoiding operational errors and component damage caused by offset or shaking. The setting of the slider 3 can carry and drive the clamping cylinder assembly to perform pulling and pulling actions. The setting of the first drive assembly 4 is to facilitate the flexible driving of the slider to slide to achieve the pulling and pulling of the clamping cylinder assembly. The first cylinder locking clamp 5 and the second cylinder locking clamp 6 are arranged so as to realize the locking and loosening of the mold locking cylinder assembly through the cooperation of the two, so as to ensure that the mold locking cylinder assembly is firmly attached to the fixed mold plate during the injection molding operation, thereby improving the injection molding stability; when the mold needs to be changed, the mold locking cylinder assembly can be loosened to facilitate the replacement of the mold, thereby improving the work efficiency and extending the service life of the machine. In this way, this case optimizes the pull-out rod structure of the mold locking cylinder assembly by designing an efficient pull-out rod structure and utilizing the synergistic effect of the transverse support seat, guide rail, slider and the first drive assembly, so that the pull-out action of the mold locking cylinder assembly is smoother and more precise, and the mold locking cylinder assembly can be pulled out smoothly and quickly, effectively solving the problem of being unable to be pulled out or excessively worn due to heavy weight, thereby improving the working efficiency of the injection molding machine.

[0040] like Figures 1 to 3 As shown, as a preferred embodiment, the pull-out rod structure also includes: a support frame 7 for supporting the lateral support seat 1 arranged at the bottom of the lateral support seat 1; the support frame 7 includes a first lateral support plate 71 arranged at the bottom, a plurality of feet 72 connected to the bottom of the first lateral support plate 71, a vertical support column 73 extending vertically from the top of the first lateral support plate 71, and a second lateral support plate 74 installed on the top of the vertical support column 73, and the top surface of the second lateral support plate 74 is in contact with the lateral support seat 1.

[0041] As described above, the support frame 7 provides additional support force for the lateral support seat 1 through its stable structure, effectively enhancing the stability and load-bearing capacity of the entire pull-out rod structure. Specifically, the provision of multiple feet 72 at the bottom of the lateral support seat 1 of the support frame 7 can distribute the load to the multiple feet 72, thereby reducing the pressure on each foot, and improving the durability and service life of the entire structure. The provision of the vertical support column 73 can enhance the vertical support capacity of the support frame and have a certain anti-seismic effect, so that the pull-out rod structure can be more stable and easier to pull when pulling the clamping cylinder assembly. The fitting arrangement of the top surface of the second lateral support plate 74 and the lateral support seat 1 ensures a tight connection between the support frame and the lateral support seat.

[0042] As Figure 1 shown, as a preferred embodiment, a triangular reinforcing support frame 75 is provided between the top of the first horizontal support plate 71 and the position near the bottom of the vertical support column 73, and between the bottom of the second horizontal support plate 74 and the position near the top of the vertical support column 73. In this way, through the triangular reinforcing support frame 75, the rigidity and stability of the support frame 7 are further enhanced, thereby ensuring the stability of the movement of the draw rod.

[0043] As Figure 2 and Figure 3 shown, as a preferred embodiment, the lateral support base 1 is provided with a lateral support bottom 11 that fits against the top surface of the second horizontal support plate 74, a convex mounting portion 12 that extends upward from the lateral support bottom 11 for mounting the guide rail 2 thereon, and a reinforcing rib portion 13 that is connected between the left and right sides of the lateral support bottom 11 and the convex mounting portion 12. In this way, through the close fit between the lateral support bottom 11 and the top surface of the second horizontal support plate 74, the stable connection between the support base and the support frame is ensured. Through the setting of the convex mounting portion 12, a dedicated mounting platform is provided for the guide rail 2, enabling the guide rail to be stably mounted on the support base. Through the setting of the reinforcing rib portion 13, the rigidity and load-bearing capacity of the lateral support base 1 are effectively enhanced, enabling it to withstand greater loads without deformation or damage, thereby further ensuring the smooth and rapid drawing of the mold clamping cylinder assembly.

[0044] As described above, the first drive assembly 4 is a pull-rod type oil cylinder capable of realizing the drawing action. In this way, the pull-rod type oil cylinder utilizes the pressure of the liquid to generate thrust or pull force, has a powerful driving force, so as to ensure the smooth progress of the drawing action, and the pull-rod type oil cylinder can ensure the smooth transmission of the fluid and reliable working effect, so that it can still maintain stable performance under high-frequency and long-time operation, reducing the possibility of failures.

[0045] As Figure 1 shown, as a preferred embodiment, the slider 3 and the mold clamping cylinder assembly 101 are fixedly connected together through a connecting plate 8. The slider 3 is fixedly connected to the first half of the connecting plate 8, the cylinder sleeve of the pull-rod type oil cylinder is fixedly connected to the second half of the connecting plate 8, and the end of the piston rod of the pull-rod type oil cylinder far from the cylinder sleeve is connected to the fixed template 102. In this way, within the installation space that can make full use of the connecting plate 8, the machine platform space can be saved, so as to install the draw rod structure of this case within a limited space while ensuring the mold change efficiency.

[0046] As Figure 1As shown, as a preferred embodiment, one end of the piston rod away from the cylinder liner is connected with a spherical plain bearing 1011 and is fixedly connected to the fixed template 102 through a pin 9; a part of the piston rod penetrates through the second transverse support plate 74, and the fixed template 102 is recessed with an avoidance groove 1021 for avoiding the part of the piston rod that penetrates through, and a connecting seat 1022 for inserting the pin 9 is connected to one side wall of the avoidance groove 1021. In this way, through the setting of the spherical plain bearing 1011, the piston rod can be allowed to have a certain flexibility at the connection point, and the minute deviations generated during manufacturing, installation or the working process can be compensated, so as to ensure that the piston rod always remains smooth during the reciprocating motion, reducing friction and wear. By using the fixed template 102 to be recessed to form the avoidance groove 1021, the part of the piston rod that penetrates through is avoided, which can ensure that it will not hinder the passage of the piston rod during movement and further saves space. The piston rod is fixedly connected to the connecting seat 1022 on the fixed template 102 through the pin 9, ensuring the stability and reliability of the piston rod during the working process. So that it can bear greater tensile force and pressure, prevent the piston rod from falling off or being damaged due to unexpected situations, and the disassembly, assembly or maintenance is more convenient through the installation method of the pin 9.

[0047] As shown in the figure, as a preferred embodiment, the first oil cylinder locking fixture 5 is connected to the die locking oil cylinder assembly 101 through a detachable first fixture support 51; the second oil cylinder locking fixture 6 is connected to the fixed template 102 through a detachable second fixture support 61. In this way, the first oil cylinder locking fixture 5 and the second oil cylinder locking fixture 6 are easy to disassemble and assemble, so as to improve work efficiency.

[0048] As Figure 4 and Figure 5 As shown, as a preferred embodiment, the first oil cylinder locking fixture 5 is provided with a first clamping block part 50 capable of moving back and forth and left and right, and the second oil cylinder locking fixture 6 is provided with a second clamping block part 610 capable of moving back and forth and left and right. During specific implementation, the first oil cylinder locking fixture 5 and the second oil cylinder locking fixture 6 are fixtures driven by air cylinders. In this way, through the forward and backward movement of the clamping block parts of the two, the die locking oil cylinder assembly 101 can be flexibly avoided without hindering its pulling; when clamping is required, then the two are extended and cooperatively extended and the die locking oil cylinder assembly 101 is clamped by moving right / towards the direction close to the fixed template together, thereby increasing the flexibility of operation and improving the efficiency and accuracy of the entire die change process.

[0049] The specific installation method of this case is as follows:

[0050] The mold clamping oil cylinder assembly is an integrated assembly of a mold clamping oil cylinder and a pull rod. During the injection molding operation, the first oil cylinder clamping fixture 5 and the second oil cylinder clamping fixture 6 are used to lock and fit the mold clamping oil cylinder assembly onto the fixed template 102. The first oil cylinder clamping fixture 5 and the second oil cylinder clamping fixture 6 are respectively locked onto the fixed template 102 by screws through the first fixture support 51 and the second fixture support 61. Since the floor 12 contacts the ground, it fits with the vertical support column 73, and together they support the upper horizontal support base 1. The guide rail 2 and the slider 3 form a highly rigid linear slide rail. The mold clamping oil cylinder part of the mold clamping oil cylinder assembly and the cylinder sleeve of the pull rod type oil cylinder / first drive assembly 4 are connected by the connecting plate 8 and bolts. The connecting seat 1022 is fixed onto the fixed template 102 by screws, and the spherical plain bearing 1011 and the piston rod of the pull rod type oil cylinder are fixed by the pin 9. Through the reciprocating movement of the pull rod type oil cylinder body, the mold clamping oil cylinder assembly is taken out to the mold, achieving the effect of quickly replacing large molds.

[0051] The specific working principle of this case is as follows:

[0052] When the mold clamping oil cylinder assembly needs to be withdrawn for mold change, the first oil cylinder clamping fixture 5 and the second oil cylinder clamping fixture 6 loosen the chuck, and then the pull rod type oil cylinder body is pressurized by oil pressure and moves to the left. By driving the connecting plate, the slider and the mold clamping oil cylinder assembly are driven to move to the left. When the extraction stroke is completed, the action is finished, thus achieving rapid demolding. Conversely, when normal injection molding work is required, the pull rod type oil cylinder pushes the mold clamping oil cylinder assembly to the fixed template 102, and then the first oil cylinder clamping fixture 5 and the second oil cylinder clamping fixture 6 close the chuck to tightly lock the mold clamping oil cylinder assembly, and then normal injection molding work can be carried out.

[0053] As described above, the present case protects a pull rod structure of a two-platen injection molding machine. All technical solutions identical or similar to the present case should be regarded as falling within the protection scope of the present case.

Claims

1. A pull rod structure for a two-platen injection molding machine, used for pulling out a clamping cylinder assembly (101) of a two-platen injection molding machine, characterized in that: include: A transverse support seat (1) is connected to a fixed platen (102) of a two-plate injection molding machine and extends transversely outward from an outer side of the fixed platen (102); A guide rail (2) extending laterally and mounted on the lateral support seat (1); A slider (3) slides transversely along the guide rail (2) and is used to carry and drive the clamping cylinder assembly (101) to move closer to or away from the fixed platen (102); A first driving assembly (4) connected to the slider (3) and used for driving the slider (3) and the clamping cylinder assembly (101) to slide laterally along the guide rail (2); A first oil cylinder locking fixture (5) connected to the mold locking oil cylinder assembly (101); A second oil cylinder locking fixture (6) connected to the fixed template (102); The first cylinder locking clamp (5) and the second cylinder locking clamp (6) are used to lock the mold locking cylinder assembly (101) and fit it onto the fixed mold plate (102) through the cooperation of the two during the injection molding operation, and are used to release the mold locking cylinder assembly (101) when the mold needs to be changed.

2. The pull-out rod structure according to claim 1, characterized in that: Also includes: A support frame (7) is arranged at the bottom of the transverse support seat (1), and the support frame (7) comprises a first transverse support plate (71) arranged at the bottom, a plurality of feet (72) connected to the bottom of the first transverse support plate (71), a vertical support column (73) vertically extending from the top of the first transverse support plate (71), and a second transverse support plate (74) installed on the top of the vertical support column (73), wherein the top surface of the second transverse support plate (74) is in contact with the transverse support seat (1).

3. The pull-out rod structure according to claim 2, characterized in that: A triangular-shaped reinforcing support frame (75) is provided between the top of the first transverse support plate (71) and the position near the bottom of the vertical support column (73), and between the bottom of the second transverse support plate (74) and the position near the top of the vertical support column (73).

4. The pull-out rod structure according to claim 2 or 3, characterized in that: The transverse support seat (1) is provided with a transverse support bottom (11) which is in contact with the top surface of the second transverse support plate (74), a raised mounting portion (12) extending upward from the transverse support bottom (11) for mounting the guide rail (2) thereon, and a reinforcing rib portion (13) connected between the left and right sides of the transverse support bottom (11) and the raised mounting portion (12).

5. The pull-out rod structure according to claim 2, characterized in that: The first driving assembly (4) is a pull-rod type oil cylinder capable of realizing a pulling action.

6. The pull-out rod structure according to claim 5, characterized in that: The slider (3) and the clamping cylinder assembly (101) are fixedly connected together via a connecting plate (8); the slider (3) is fixedly connected to the front half of the connecting plate (8); the cylinder sleeve of the tie rod type cylinder is fixedly connected to the rear half of the connecting plate (8); and the end of the piston rod of the tie rod type cylinder away from the cylinder sleeve is connected to the fixed mold plate (102).

7. The pull-out rod structure according to claim 6, characterized in that: One end of the piston rod away from the cylinder sleeve is connected to a joint bearing (1011) and is fixedly connected to the fixed template (102) via a latch (9); a portion of the piston rod passes through the second transverse support plate (74), and the fixed template (102) is recessed with a avoidance groove (1021) for avoiding the portion of the piston rod that passes through, and a connecting seat (1022) for inserting the latch (9) is connected to a groove wall on one side of the avoidance groove (1021).

8. The pull-out rod structure according to claim 1, characterized in that: The first cylinder locking clamp (5) is connected to the mold locking cylinder assembly (101) via a detachably connected first clamp support (51); and the second cylinder locking clamp (6) is connected to the fixed mold plate (102) via a detachably connected second clamp support (61).

9. The pull-out rod structure according to claim 1 or 8, characterized in that: The first oil cylinder locking clamp (5) is provided with a first clamping block portion (50) capable of moving forward and backward and left and right, and the second oil cylinder locking clamp (6) is provided with a second clamping block portion (610) capable of moving forward and backward and left and right.

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