Machine door structure applied to injection molding machine and injection molding machine

Abstract

The utility model discloses a kind of machine door structure and injection molding machine applied to injection molding machine, it is related to injection molding equipment technical field;The machine door structure includes machine door, the machine door can be slid relative to the frame body, and the machine door is set on the side of the sealing plate away from the mold locking structure;Wherein, the upper portion of the machine door is connected with guide roller, the guide roller is slidably connected with the guide rail installed in the frame body, wherein the track direction of the guide rail is set along the sliding direction of the machine door;And / or, the lower portion of the machine door is connected with guide bearing, the guide bearing is slidably connected with the guide groove installed in the frame body, wherein the groove direction of the guide groove is set along the sliding direction of the machine door.The technical scheme provided by the utility model can realize the distance between the two machine doors of injection molding machine, so as to facilitate the installation operation of injection mold.

Description

Technical Field

[0001] This utility model relates to the field of injection molding equipment technology, and in particular to a door structure for an injection molding machine and the injection molding machine itself. Background Technology

[0002] Typically, an injection molding machine includes a frame and a mold-locking structure located inside the frame, which controls the opening and closing of the injection mold. The machine also includes a sealing plate and a door (or safety door). The sealing plate is connected to the frame and positioned on the side of the mold-locking structure to provide external protection. The door is slidably connected to the frame, allowing operators to open the door and remove the molded product from the mold located inside the frame. In existing technology, the door is located on the side of the sealing plate closest to the mold-locking structure, resulting in a narrow gap between the doors on both sides of the injection molding machine, which is inconvenient for mold installation.

[0003] It should be noted that the above content is only used to help understand the technical solution of this utility model, and does not represent an admission that the above content is prior art. Utility Model Content

[0004] The main purpose of this utility model is to propose a door structure for injection molding machines and an injection molding machine in order to increase the distance between the two doors of the injection molding machine to facilitate the installation of injection molds.

[0005] To achieve the above objectives, this utility model proposes a door structure for an injection molding machine, wherein the injection molding machine includes a frame and a mold-locking structure located inside the frame, and the injection molding machine further includes a sealing plate connected to the frame and disposed on the side of the mold-locking structure; specifically, the door structure includes: The machine door is slidable relative to the frame and is located on the side of the sealing plate away from the locking structure. The upper part of the machine door is connected to a guide roller, which is slidably connected to a guide rail installed on the frame, wherein the guide rail extends along the sliding direction of the machine door; and / or, the lower part of the machine door is connected to a guide bearing, which is slidably connected to a guide groove installed on the frame, wherein the guide groove extends along the sliding direction of the machine door.

[0006] In one embodiment, the guide rail is disposed on the side of the sealing plate near the locking structure; the top of the machine door is provided with an upper extension, the upper extension covers the upper area of ​​the sealing plate and extends to the top of the guide rail, and the upper extension is connected to the guide roller through a first connector; And / or, the guide groove is disposed on the side of the sealing plate near the locking structure; the bottom of the machine door is provided with a lower extension, the lower extension covers the lower area of ​​the sealing plate and extends to the lower part of the guide groove, and the lower extension is connected to the guide bearing through a second connector.

[0007] In one embodiment, the door includes at least two guide rollers, which are respectively disposed on both sides of the door along its sliding direction; and / or, the door includes at least two guide bearings, which are respectively disposed on both sides of the door along its sliding direction.

[0008] In one embodiment, the guide rail has a circular cross-section, and the guide roller has a concave arc surface along its circumference, which is in concave-convex fit with the guide rail.

[0009] In one embodiment, the cross-section of the guide groove is a U-shaped structure with the opening facing downwards; the guide bearing is horizontally disposed inside the guide groove, and the outer two sides of the guide bearing are respectively attached to and connected to the two inner sidewalls of the guide groove.

[0010] In one embodiment, the frame includes a mounting beam, with its opposite ends fixedly connected to the frame, the mounting beam and the guide rail being arranged parallel to each other, the guide rail being mounted on the mounting beam; and the mounting beam is provided with a limiting block, the limiting block being located at the end of the guide rail, the limiting block being used to abut against the guide roller.

[0011] In one embodiment, the frame includes a support roller, which is disposed close to the underside of the mounting beam and is used to provide an upward supporting force to the mounting beam; the side of the support roller is connected to the locking structure via a third connector.

[0012] In one embodiment, the machine door is provided with an observation window; and / or, the machine door is provided with a handle on the side away from the sealing plate.

[0013] To achieve the above objectives, this utility model proposes an injection molding machine, which includes the door structure described in any of the above claims.

[0014] In one embodiment, the injection molding machine includes a control panel, which is signal-connected to the mold clamping structure; the frame has a recessed panel mounting cavity, in which the control panel is mounted.

[0015] The technical solution of this utility model increases the distance between the machine doors on both sides of the injection molding machine by placing the machine door on the side of the sealing plate away from the mold locking structure (i.e., an external layout). This makes the installation, disassembly, and maintenance of the injection mold more convenient and efficient, thus meeting the design objectives of this application. Furthermore, the bidirectional sliding guide structure of the upper guide roller and guide rail, and the lower guide bearing and guide groove, achieves multi-point support and guidance during the opening and closing of the machine door. This effectively avoids jamming, shaking, or derailment caused by unilateral force or sliding offset, improving the smoothness and reliability of the machine door operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of an embodiment of the door structure provided by this utility model; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 for Figure 1 A magnified view of a section at point B in the middle; Figure 4 A three-dimensional structural diagram of an embodiment of the door structure provided by this utility model (hidden locking structure); Figure 5 for Figure 4 A magnified view of a section at point C.

[0018] Explanation of reference numerals in the attached figures: 100. Frame; 110. Guide rail; 120. Guide groove; 130. Mounting beam; 131. Limiting block; 200. Mold locking structure; 300. Sealing plate; 400. Machine door; 410. Upper extension; 420. Lower extension; 430. Observation window; 440. Handle; 500. Guide roller; 510. First connecting piece; 600. Guide bearing; 610. Second connecting piece; 700. Support roller; 710. Third connecting piece; 800. Control panel; The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, what is described is only a part of the embodiments of this utility model, and not all of the embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0020] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0021] Furthermore, it should be noted that the descriptions involving "first," "second," etc., in this utility model are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0022] Typically, an injection molding machine includes a frame and a mold-locking structure located inside the frame, which controls the opening and closing of the injection mold. The machine also includes a sealing plate and a door (or safety door). The sealing plate is connected to the frame and positioned on the side of the mold-locking structure to provide external protection. The door is slidably connected to the frame, allowing operators to open the door and remove the molded product from the mold located inside the frame. In existing technology, the door is located on the side of the sealing plate closest to the mold-locking structure, resulting in a narrow gap between the doors on both sides of the injection molding machine, which is inconvenient for mold installation.

[0023] To solve the above-mentioned technical problems, this utility model proposes a door structure for use in injection molding machines.

[0024] Please see Figures 1 to 5 In one embodiment of the present invention, the injection molding machine includes a frame 100 and a locking structure 200 located inside the frame 100. The injection molding machine also includes a sealing plate 300, which is connected to the frame 100 and is disposed on the side of the locking structure 200. Specifically, the door structure includes: The machine door 400 can slide relative to the frame 100, and the machine door 400 is located on the side of the sealing plate 300 away from the locking structure 200; The upper part of the door 400 is connected to a guide roller 500, which is slidably connected to a guide rail 110 installed on the frame 100, wherein the guide rail 110 extends along the sliding direction of the door 400; and / or, the lower part of the door 400 is connected to a guide bearing 600, which is slidably connected to a guide groove 120 installed on the frame 100, wherein the groove of the guide groove 120 extends along the sliding direction of the door 400.

[0025] The technical solution of this embodiment increases the distance between the machine doors 400 on both sides of the injection molding machine by placing the machine door 400 on the side of the sealing plate 300 away from the locking structure 200 (i.e., an external layout). This makes the installation, disassembly, and maintenance of the injection mold more convenient and efficient, thus meeting the design objectives of this application. Furthermore, the bidirectional sliding guide structure of the upper guide roller 500 and guide rail 110, and the lower guide bearing 600 and guide groove 120 achieves multi-point support and guidance during the opening and closing of the machine door 400. This effectively avoids jamming, shaking, or derailment caused by unilateral force or sliding offset, improving the smoothness and reliability of the machine door 400's operation.

[0026] As a preferred embodiment of the above, the guide rail 110 is disposed on the side of the sealing plate 300 near the locking structure 200; the top of the machine door 400 is provided with an upper extension 410, which covers the upper area of ​​the sealing plate 300 and extends to the top of the guide rail 110. The upper extension 410 is connected to the guide roller 500 through the first connector 510. With this arrangement, placing the guide rail 110 on the side of the sealing plate 300 near the locking structure 200 is equivalent to adding a natural protective cover to the guide rail 110, preventing oil mist, dust and accidental bumps in the workshop from contaminating or deforming the guide rail 110, and effectively extending the service life of the guide rail 110. At the same time, the top of the door 400 extends over the area above the sealing plate 300 and bends towards the locking structure 200 to form an upper extension 410, thereby maximizing the area of ​​the door 400 and preventing the operator's hands from extending over the top of the door 400 into the injection mold for opening and closing operations, thus preventing accidents.

[0027] Furthermore, the door 400 includes at least two guide rollers 500, which are respectively disposed on both sides of the door 400 along its sliding direction. This arrangement, with at least one guide roller 500 on each side of the door 400's sliding direction, forms a "two-point-one-line" upper constraint, which can automatically counteract the deflection torque generated by the door 400's own weight, eliminating the "nodding" phenomenon common in single-wheel structures. Even for large, heavy-duty doors 400, it can maintain high horizontality and minimal sway during opening and closing, reducing localized wear on the guide rail 110 and extending the maintenance-free cycle. In this embodiment, the door 400 includes two guide rollers 500.

[0028] Furthermore, the guide rail 110 has a circular cross-section, and the guide roller 500 has a concave arc surface along its circumference, which engages with the guide rail 110. This configuration creates a line contact rolling pair between the circular cross-section guide rail 110 and the arc surface roller. Compared to the surface contact scheme of a flat rail + flat wheel, this embodiment exhibits lower contact stress, effectively reducing frictional resistance. Simultaneously, the arc-shaped concave-convex fit provides an automatic centering function, compensating for wobbling and offset during the sliding of the door 400, further improving the smoothness of the door 400's sliding.

[0029] As a preferred embodiment of the above, the guide groove 120 is disposed on the side of the sealing plate 300 near the mold-locking structure 200; the bottom of the machine door 400 is provided with a lower extension 420, which covers the lower area of ​​the sealing plate 300 and extends to the lower part of the guide groove 120. The lower extension 420 is connected to the guide bearing 600 through the second connector 610. This arrangement, placing the guide groove 120 on the side of the sealing plate 300 near the mold-locking structure 200, is equivalent to adding a natural protective cover to the guide groove 120, preventing oil mist, dust, and accidental impacts in the workshop from contaminating or deforming the guide groove 120, effectively extending the service life of the guide groove 120. At the same time, the bottom of the door 400 extends across the area below the sealing plate 300 and bends towards the locking structure 200 to form a lower extension 420, thereby maximizing the area of ​​the door 400 and preventing the operator's hands from extending across the bottom of the door 400 into the injection mold for opening and closing the mold, thus preventing accidents.

[0030] Furthermore, the machine door 400 includes at least two guide bearings 600, which are respectively disposed on both sides of the machine door 400 along its sliding direction. This arrangement, with at least one guide bearing 600 on each side of the sliding direction of the machine door 400, combines with the upper double-sided guide rollers 500 described above to form a four-point rectangular constraint, constituting a "double-plane" stabilizing pair. This completely eliminates the risk of torsion or dislodging that may occur when the machine door 400 undergoes a sudden stop or is subjected to a lateral impact, meeting the reliability requirements of high-speed injection molding machines under frequent opening and closing and high acceleration conditions. In this embodiment, the machine door 400 is provided with two guide bearings 600.

[0031] Furthermore, the cross-section of the guide groove 120 is a U-shaped structure with the opening facing downwards; the guide bearing 600 is horizontally disposed inside the guide groove 120, and the outer two sides of the guide bearing 600 are respectively attached to the two inner side walls of the guide groove 120. This arrangement prevents dust and other contaminants generated during the injection mold manufacturing process from accumulating inside the guide groove 120, thus avoiding obstruction of the guide bearing 600's sliding; simultaneously, the horizontal placement of the guide bearing 600 and its outer two sides being attached to the two groove walls form a double-sided limiting composite guiding mode, which more effectively prevents shaking while guiding the sliding of the machine door 400, further improving the smoothness of the machine door 400's sliding.

[0032] As a preferred embodiment of the above, the frame 100 includes a mounting beam 130, with its two ends fixedly connected to the frame 100. The mounting beam 130 and the guide rail 110 are arranged parallel to each other, and the guide rail 110 is mounted on the mounting beam 130. The mounting beam 130 is provided with a limiting block 131 located at the end of the guide rail 110, and the limiting block 131 is used to abut against the guide roller 500. With this configuration, the mounting beam 130 serves as the mounting base for the guide rail 110, and the limiting block 131 limits the sliding distance of the guide roller 500 on the guide rail 110, preventing the door 400 from sliding excessively and colliding with the frame 100, thus preventing damage to the door 400 and the frame 100.

[0033] Furthermore, the frame 100 includes support rollers 700, which are fitted to the underside of the mounting beam 130. The support rollers 700 provide an upward supporting force to the mounting beam 130. The side of the support rollers 700 is connected to the locking structure 200 via a third connector 710. With this configuration, considering that the mounting beam 130 is only fixed to the frame 100 at its two ends, the middle section of the beam will deflect downwards due to its own weight and the weight of the machine door 400. Over time, the guide rail 110 will undergo slight deformation, causing the guide rollers 500 to jam. Therefore, a set of support rollers 700 is added directly below the mounting beam 130. The outer circle of these support rollers 700 is in close contact with the bottom surface of the mounting beam 130, continuously providing an upward supporting force from the mounting beam 130. This is equivalent to temporarily adding a support point in the middle of the span of the mounting beam 130, reducing the maximum deflection, so that the mounting beam 130 can meet the requirements of long span and high rigidity without needing to be thickened or reinforced. Meanwhile, the support roller 700 is connected to the clamping structure 200 via the third connector 710. The clamping structure 200 is the heaviest and most rigid component in the injection molding machine, further improving the stability of the support roller 700. Since the clamping structure 200 needs to move during the installation and adjustment phase of the injection mold, the support roller 700 can move relative to the mounting beam 130 with the movement of the clamping structure 200, ensuring that the support roller 700 always supports and fits snugly against the mounting beam 130.

[0034] As a preferred embodiment of the above, the machine door 400 is provided with an observation window 430; and / or, a handle 440 is provided on the side of the machine door 400 away from the sealing plate 300. This arrangement allows operators to directly observe the opening and closing of the injection mold inside the door via the observation window 430; and the handle 440 facilitates opening and closing the machine door 400 from the outside. The structure is simple and highly practical.

[0035] This utility model also discloses an injection molding machine, including a door structure applied to the injection molding machine according to any of the above embodiments. For the specific structure of the door structure, please refer to the above embodiments. Since this injection molding machine adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0036] As a preferred embodiment of the above, the injection molding machine includes a control panel 800, which is signal-connected to the clamping structure 200. The frame 100 has a recessed panel mounting cavity, in which the control panel 800 is installed. With this configuration, conventional injection molding machines typically suspend the control panel 800 beside the frame 100 using a cantilever bracket. Vibration during door opening and closing is transmitted along the cantilever bracket to the control panel 800, thus reducing its service life. This solution, by providing a recessed panel mounting cavity in the frame 100 and installing the control panel 800 within it, maximizes the integrity between the frame 100 and the control panel 800, thereby reducing the vibration frequency of the control panel 800 relative to the frame 100 and providing more effective protection for the control panel 800.

[0037] It should be noted that the door structure for injection molding machines and other aspects of injection molding machines disclosed in this utility model are existing technologies and will not be described in detail here.

[0038] The above are merely optional embodiments of this utility model and do not limit the patent scope of this utility model. Any application of this utility model directly or indirectly in other related technical fields is included within the patent protection scope of this utility model.

Claims

1. A door structure for an injection molding machine, wherein the injection molding machine includes a frame and a mold-locking structure located inside the frame, the injection molding machine further includes a sealing plate connected to the frame and disposed on the side of the mold-locking structure; characterized in that, The door structure includes: The machine door is slidable relative to the frame and is located on the side of the sealing plate away from the locking structure. The upper part of the machine door is connected to a guide roller, which is slidably connected to a guide rail installed on the frame, wherein the guide rail extends along the sliding direction of the machine door; and / or, the lower part of the machine door is connected to a guide bearing, which is slidably connected to a guide groove installed on the frame, wherein the guide groove extends along the sliding direction of the machine door.

2. The door structure as described in claim 1, characterized in that: The guide rail is disposed on the side of the sealing plate near the locking structure; the top of the machine door is provided with an upper extension, which covers the upper area of ​​the sealing plate and extends to the top of the guide rail, and the upper extension is connected to the guide roller through a first connector; And / or, the guide groove is disposed on the side of the sealing plate near the locking structure; the bottom of the machine door is provided with a lower extension, the lower extension covers the lower area of ​​the sealing plate and extends to the lower part of the guide groove, and the lower extension is connected to the guide bearing through a second connector.

3. The door structure as described in claim 1, characterized in that: The machine door includes at least two guide rollers, which are respectively disposed on both sides of the machine door along its sliding direction; and / or, the machine door includes at least two guide bearings, which are respectively disposed on both sides of the machine door along its sliding direction.

4. The door structure as described in claim 1, characterized in that: The guide rail has a circular cross-section, and the guide roller has a concave arc surface along its circumference, which is in concave-convex fit with the guide rail.

5. The door structure as described in claim 1, characterized in that: The cross-section of the guide groove is a U-shaped structure with the opening facing downwards; the guide bearing is horizontally disposed inside the guide groove, and the outer two sides of the guide bearing are respectively attached to and connected to the two inner side walls of the guide groove.

6. The door structure as described in claim 1, characterized in that: The frame includes a mounting beam, with its two ends fixedly connected to the frame. The mounting beam and the guide rail are arranged parallel to each other, and the guide rail is mounted on the mounting beam. The mounting beam is provided with a limiting block located at the end of the guide rail, and the limiting block is used to abut against the guide roller.

7. The door structure as described in claim 6, characterized in that: The frame includes support rollers, which are fitted and disposed below the mounting beam. The support rollers are used to provide an upward supporting force to the mounting beam. The side of the support rollers is connected to the locking structure via a third connector.

8. The door structure as described in any one of claims 1 to 7, characterized in that: The machine door is provided with an observation window; and / or, the machine door is provided with a handle on the side away from the sealing plate.

9. An injection molding machine, characterized in that: The injection molding machine includes the door structure as described in any one of claims 1 to 8.

10. The injection molding machine as described in claim 9, characterized in that: The injection molding machine includes a control panel, which is signal-connected to the mold clamping structure; the frame has a recessed panel mounting cavity, in which the control panel is installed.

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