Protective door roller limiting structure

Abstract

The utility model relates to the field of injection molding machine manufacturing, and discloses a protective door roller limiting structure, which comprises a guide rail, a limiting stopper fixed on the guide rail and opposite to a closing end of a protective door, and a retaining component fixed at one end of the limiting stopper close to the protective door, and a limiting space for accommodating a roller is formed between the retaining component and the limiting stopper. The retaining component is vertically inserted into the guide rail, an adjusting and limiting mechanism used for adjusting the height of the retaining component exceeding the upper end of the guide rail is arranged between the retaining component and the guide rail, and the roller limiting structure can adjust the force needed by opening the protective door and increase the adaptability.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine manufacturing, and in particular to a protective door roller limiting structure. Background Technology

[0002] The protective door of the injection molding machine is a sliding door. Rollers are installed on this door and guide it along the guide rails of the machine enclosure. The protective door opens and closes smoothly by the smooth reciprocating movement of the rollers on the guide rails. A closing limit structure is provided on the guide rails to limit the roller movement and prevent reverse movement when the protective door is closed to its maximum travel.

[0003] The existing door closing limit structure can be referred to Figure 1 As shown, it includes a limiting stop fixed on the guide rail 1 and facing the closed end of the protective door, and a backstop component fixed on the guide rail 1. The limiting stop is generally an elastic buffer block 3, and the backstop component is a backstop rivet 4 riveted and protruding on the guide rail. After the protective door is closed, the roller 2 is limited between the backstop rivet 4 and the elastic buffer block 3. The operator needs to apply a force exceeding the preset value to make the roller 2 pass the backstop rivet 4 to open the protective door.

[0004] The anti-reverse rivets are fixed to the guide rail, preventing the door from being raised or lowered. Therefore, the opening force cannot be adjusted, and the adaptability needs to be improved. Utility Model Content

[0005] This invention addresses the drawback of existing door closing limit structures that cannot adjust the opening force by providing a protective door roller limit structure with adjustable opening force.

[0006] To solve the above-mentioned technical problems, the present invention provides a solution through the following technical method:

[0007] A roller limiting structure for a protective door includes a guide rail, a limiting stop fixed on the guide rail and facing the closed end of the protective door, and a backstop component fixed on the end of the limiting stop component near the protective door. A limiting space for accommodating the roller is formed between the backstop component and the limiting stop component. The backstop component is vertically inserted into the guide rail. An adjusting limiting mechanism for adjusting the height of the backstop component that exceeds the upper end of the guide rail is provided between the backstop component and the guide rail.

[0008] Using the above solution, an adjustment limit mechanism is set between the anti-reverse component and the guide rail, so that the anti-reverse component can rise and fall and be limited, thereby adjusting the opening force of the protective door. When the anti-reverse component rises, the force required to open the door increases; when the anti-reverse component falls, the force required to open the door decreases.

[0009] Preferably, the adjusting limit mechanism includes a through hole vertically extending through the guide rail, an internally threaded component welded to the guide rail and concentrically arranged with the through hole, and an externally threaded component fixed to the bottom of the anti-reverse component and cooperating with the internally threaded component.

[0010] Using the above solution, after the external threaded part and the internal threaded part are screwed together, the height of the anti-reverse component can be precisely adjusted.

[0011] Preferably, the anti-reverse component is a reversing rod, the external threaded part is a stud with a driving groove at the bottom, and the internal threaded part is a nut, with the outer diameter of the stud being larger than the outer diameter of the anti-reverse rod.

[0012] With the above scheme, the outer diameter of the stud is larger than the outer diameter of the anti-reverse rod. The above arrangement facilitates the installation, removal and lifting adjustment of the anti-reverse component and the external threaded part on the guide rail.

[0013] Preferably, the top of the anti-reverse rod at the upper end of the guide rail is a convex hemispherical shape.

[0014] By adopting the above solution, the top shape of the anti-roll bar can improve the smoothness of the rollers when they roll over, and reduce the wear of both.

[0015] Preferably, the limiting stop is an elastic buffer block, which is vertically fixed on the guide rail with a mounting base. The elastic buffer block can be detachably fixed on the mounting base through a horizontal adjustment mechanism.

[0016] Preferably, the horizontal adjustment mechanism includes a bolt that fixes the head to the elastic buffer stop, and the bolt is screwed into the mounting base.

[0017] Using the above solution, the limit stop has buffering and noise reduction performance. The adjustable horizontal distance of the limit stop can adapt to different models of rollers or eliminate production and installation errors, thus increasing adaptability.

[0018] Preferably, a stop bar is provided on the mounting base above the elastic buffer block to prevent the roller from jumping excessively upwards when it passes the anti-reverse component.

[0019] Preferably, the blocking rod is horizontally screwed onto the mounting base along the rolling direction of the roller.

[0020] By adopting the above solution, the horizontal position of the blocking rod can be adjusted to ensure that the blocking rod is always above the limiting roller.

[0021] This utility model, by adopting the above technical solutions, has significant technical effects: An adjustment limiting mechanism is set between the anti-reverse component and the guide rail, allowing the anti-reverse component to rise and fall and be limited, thereby adjusting the opening force of the protective door. When the anti-reverse component rises, the force required to open the door increases; when the anti-reverse component falls, the force required to open the door decreases. The elastic buffer block has buffering and noise reduction performance; the adjustable horizontal distance of the elastic buffer block can adapt to different models of rollers or eliminate production and installation errors, increasing adaptability. The blocking rod is used to limit the height of the roller's upward jump, preventing the roller from excessively jumping upward and derailing from the track. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of the existing protective door roller limiting structure when the rollers are in the limiting position.

[0023] Figure 2 This is an isometric view of the protective door roller limiting structure in this embodiment when the protective door is limited;

[0024] Figure 3 This is a front view of the protective door roller limiting structure in this embodiment;

[0025] Figure 4 This is a left view of the protective door roller limiting structure in this embodiment when the roller is in the limiting position.

[0026] Figure 5 yes Figure 4 A sectional view of AA.

[0027] The parts referred to by the numbers in the above attached diagrams are as follows: 1. Guide rail; 2. Roller; 3. Elastic buffer block; 4. Anti-reverse rivet; 5. Anti-reverse rod; 6. Blocking rod; 7. Nut; 8. Stud; 9. Mounting base; 10. Locking screw; 11. Bolt. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0029] A protective door roller limiting structure, combined with Figures 2-5 As shown, it includes a guide rail 1, a limiting stop fixed on the guide rail 1 and facing the closed end of the protective door, and a backstop component fixed on the end of the limiting stop near the protective door. The backstop component is a backstop rod 5 vertically inserted into the guide rail 1. The top of the backstop rod 5 is a convex hemispherical shape. The limiting stop is an elastic buffer block 3, which is mounted on a mounting base 9. The mounting base 9 is detachably fixed to the upper end face of the guide rail 1 by a locking screw 10. The upper end of the backstop rod 5 extends beyond the upper end of the guide rail. A limiting space for accommodating the roller 2 is formed between the backstop rod 5 and the elastic buffer block 3.

[0030] To increase adaptability, an adjustment limit mechanism is provided between the anti-reverse rod 5 and the guide rail 1 to realize the lifting and limiting of the anti-reverse rod. The elastic buffer block 3 is detachably fixed on the mounting base 9 through the horizontal adjustment mechanism.

[0031] The adjusting limit mechanism includes a through hole vertically through the guide rail 1, a nut 7 welded to the guide rail 1 and concentrically arranged with the through hole, and a stud 8 fixed to the bottom of the anti-reverse rod 5 and cooperating with the nut 7. The bottom of the stud 8 has a driving groove for inserting tools such as screwdrivers. The outer diameter of the stud 8 is larger than the outer diameter of the anti-reverse rod 5.

[0032] The horizontal adjustment mechanism includes a bolt 11 that fixes the head to the elastic buffer block 3, and the bolt 11 is screwed into the mounting base 9.

[0033] A blocking rod 6 is provided on the mounting base 9 above the elastic buffer block 3 to prevent the roller 2 from jumping excessively when it passes the anti-reverse rod 5. The blocking rod 6 is horizontally screwed onto the mounting base 9 along the rolling direction of the roller 2.

[0034] The height of the aforementioned anti-reverse lever 5 is adjustable, thereby adjusting the force required for the roller 2 to pass over the anti-reverse lever 5; the horizontal position of the elastic buffer block 3 and the blocking rod 6 is adjustable, thereby adapting to rollers 2 of different sizes and controlling the starting height of the roller 2, significantly increasing adaptability.

[0035] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A protective door roller limiting structure, comprising a guide rail (1), a limiting stopper fixed on the guide rail (1) and opposite to a closing end of the protective door, and a retreat-stopping component fixed on one end of the limiting stopper close to the protective door, a limiting space for accommodating a roller (2) being formed between the retreat-stopping component and the limiting stopper, characterized in that: The retreat-stop component is vertically inserted into the guide rail (1), and an adjusting limiting mechanism is arranged between the retreat-stop component and the guide rail (1) to adjust the height of the retreat-stop component beyond the upper end of the guide rail (1).

2. The protective door roller limiting structure according to claim 1, characterized in that: The adjusting limiting mechanism comprises a through hole vertically penetrating the guide rail (1), an inner threaded member concentrically arranged on the guide rail (1) and welded to the guide rail (1), and an outer threaded member fixed to the bottom of the retreat-stop component and matched with the inner threaded member.

3. The protective door roller limiting structure according to claim 2, characterized in that: The retreat-stop component is a retreat-stop rod (5), the outer threaded member is a stud (8) with a driving groove at the bottom, and the inner threaded member is a nut (7), wherein the outer diameter of the stud (8) is larger than the outer diameter of the retreat-stop rod (5).

4. The protective door roller limiting structure according to claim 3, characterized in that: The top of the retreat-stop rod (5) at the upper end of the guide rail (1) is in a convex hemispherical shape.

5. The protective door roller limiting structure according to claim 1, wherein: The limiting stopper is an elastic buffer block (3), and a mounting seat (9) is vertically fixed on the guide rail (1), and the elastic buffer block (3) is detachably fixed on the mounting seat (9) through a horizontal distance adjusting mechanism.

6. The protective door roller limiting structure according to claim 5, characterized in that: The horizontal distance adjusting mechanism comprises a bolt (11) fixed to the head of the elastic buffer block (3), and the bolt (11) is screw-connected to the mounting seat (9).

7. The protective door roller limiting structure according to claim 6, characterized in that: A blocking rod (6) is arranged above the elastic buffer block (3) on the mounting seat (9) to prevent the roller (2) from jumping excessively when passing through the retreat-stop component.

8. The protective door roller limiting structure according to claim 7, characterized in that: The blocking rod (6) is screw-connected to the mounting seat (9) in the horizontal direction of the roller (2).

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