A roll positioning pin mechanism

Abstract

A kind of roller positioning pin mechanism, including clamp block, movable pin sliding groove is equipped in clamp block, movable pin sliding groove includes movable pin front end groove and movable pin rear end groove, and movable pin front end groove and movable pin rear end groove are communicated;Movable pin sliding groove is equipped with movable pin, movable pin is equipped with baffle, baffle is used to slide in movable pin front end groove, movable pin rear end is equipped with slot, and slot is matched with damping pin, and damping pin is installed in damping pin sliding groove.When need to be glued, staff manually push movable pin front end to suction roller positioning groove, damping pin moves inwards and is clamped into annular slot, temporarily lock movable pin, ensure that suction roller is stably in the state of gluing;And when suction roller starts to rotate, movable pin is extruded and moves backward, spring releases prestress and further pushes movable pin to retreat, so that movable pin is completely separated from suction roller, to avoid friction between the two.

Description

Technical Field

[0001] This utility model belongs to the field of medical dressings, and specifically relates to a roller positioning pin mechanism. Background Technology

[0002] The positioning status of the suction roller directly affects the quality and efficiency of processes such as adhesive application. Currently, traditional rotary roller positioning pin mechanisms have several shortcomings when applied to suction roller positioning: Firstly, existing positioning pin mechanisms struggle to flexibly switch the suction roller between adhesive application and rotation states, making the positioning and disengagement processes complex and prone to instability or incomplete disengagement. Secondly, during suction roller rotation, significant friction easily occurs between the traditional positioning pin and the suction roller, accelerating component wear, shortening equipment lifespan, and potentially affecting the roller's rotational accuracy and operational stability, thereby reducing production efficiency and product quality. Furthermore, traditional positioning pin mechanisms lack effective adjustment and locking structures, making it difficult to precisely control the positioning and disengagement forces according to actual working conditions.

[0003] Therefore, there is an urgent need for a rotating roller positioning pin mechanism that is structurally sound, easy to operate, and can effectively switch between positioning and disengaging the suction roller, while reducing friction and improving the stability of equipment operation. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a roller positioning pin mechanism. When adhesive needs to be applied, the operator manually pushes the front end of the movable pin into the positioning groove of the suction roller. The damping pin moves inward and gets into the annular groove, temporarily locking the movable pin and ensuring that the suction roller is stably in the adhesive application state. When the suction roller starts to rotate, the movable pin is squeezed and moves backward. The spring releases the prestress and further pushes the movable pin backward, so that the movable pin is completely separated from the suction roller and avoids friction between the two.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A roller positioning pin mechanism includes a clamping block, and a movable pin groove is provided in the clamping block. The movable pin groove includes a movable pin front end groove and a movable pin rear end groove, and the movable pin front end groove and the movable pin rear end groove are connected.

[0007] The movable pin is provided in the movable pin groove, and a partition is provided on the movable pin. The partition is used to slide in the groove at the front end of the movable pin. A retaining groove is provided at the rear end of the movable pin. The retaining groove cooperates with the damping pin, and the damping pin is installed in the damping pin groove.

[0008] Preferably, the slot is an annular slot.

[0009] Preferably, the inner wall of the front groove of the movable pin is provided with an internal thread, the front groove of the movable pin is threadedly connected to the external thread adjusting cap, and a spring is provided between the external thread adjusting cap and the partition.

[0010] Preferably, the front end of the movable pin is hemispherical, and the movable pin slides into the inner wall of the external thread adjusting cap.

[0011] Preferably, the inner diameter of the front groove of the movable pin is larger than the inner diameter of the rear groove of the movable pin.

[0012] Preferably, the damping pin groove is connected to the rear end groove of the movable pin, and the axis of the rear end groove of the movable pin is perpendicular to the axis of the damping pin groove.

[0013] Preferably, the damping pin end is provided with a ball, which is connected by an elastic element.

[0014] The present invention can achieve the following beneficial effects:

[0015] This invention achieves flexible switching between the adhesive application and rotation states of the suction roller through the ingenious cooperation of components such as a movable pin, a damping pin, a spring, and an annular groove. When adhesive application is required, the operator manually pushes the front end of the movable pin into the positioning groove of the suction roller. The damping pin moves inward and engages with the annular groove, temporarily locking the movable pin and ensuring that the suction roller is stably in the adhesive application state. When the suction roller begins to rotate, the movable pin is compressed and moves backward. The spring releases its prestress and further pushes the movable pin backward, completely disengaging it from the suction roller and preventing friction between them. This process is convenient to operate, provides precise positioning, and ensures thorough disengagement, effectively improving equipment operating efficiency and process quality.

[0016] The threaded connection between the groove at the front end of the movable pin and the external threaded adjusting cap allows for convenient adjustment of the spring prestress, enabling precise control of the positioning and disengagement forces of the movable pin according to different working conditions. Simultaneously, the ball bearing at the end of the damping pin, or its connection structure with the elastic element, provides resistance to overcome the spring thrust and allows for adaptive movement when the movable pin is subjected to significant thrust. This design effectively reduces wear between components, extends equipment lifespan, ensures long-term stable operation of the suction roller, and reduces equipment maintenance costs. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a cross-sectional view of the present invention;

[0019] Figure 2 This is a structural diagram of the present utility model;

[0020] Figure 3 This is a diagram showing the mating of the damping pin and the movable pin of this utility model;

[0021] Figure 4 This is a diagram illustrating the effect of using this utility model.

[0022] In the figure: 1. Clamping block; 2. Movable pin groove; 201. Movable pin front end groove; 201. Movable pin rear end groove; 3. Movable pin; 4. Partition plate; 5. Damping pin; 6. Annular groove; 7. Damping pin groove; 8. External thread adjusting cap; 9. Spring; 10. Suction roller. Detailed Implementation

[0023] Preferred solutions include Figures 1 to 4 As shown, a roller positioning pin mechanism includes a clamping block 1, and a movable pin groove 2 is provided in the clamping block 1. The movable pin groove 2 includes a movable pin front end groove 201 and a movable pin rear end groove, and the movable pin front end groove 201 and the movable pin rear end groove are connected.

[0024] The movable pin groove 2 is provided with a movable pin 3, and the movable pin 3 is provided with a partition 4. The partition 4 is used to slide in the front groove 201 of the movable pin. The rear end of the movable pin 3 is provided with a retaining groove, which cooperates with the damping pin 5. The damping pin 5 is installed in the damping pin groove 7.

[0025] The clamping block 1 can be installed on the rotating shaft of the suction roller 10. The side wall of the suction roller 10 is provided with a positioning groove, which cooperates with the movable pin 3. When the front end of the movable pin 3 is in the positioning groove, the suction roller 10 is in the adhesive state. When the suction roller 10 starts to rotate, the movable pin 3 will be squeezed and move backward.

[0026] Furthermore, the slot is an annular slot 6, which has an arc-shaped concave surface. When the front end of the movable pin 3 is located in the positioning groove, the end of the damping pin 5 is located in the annular slot 6. When the movable pin 3 moves backward, the annular slot 6 will give the damping pin 5 a thrust, causing the damping pin 5 to move outward.

[0027] Furthermore, the inner wall of the movable pin front end groove 201 is provided with an internal thread, the movable pin front end groove 201 is threadedly connected to the external thread adjusting cap 8, and a spring 9 is provided between the external thread adjusting cap 8 and the partition plate 4.

[0028] The external thread adjusting cap 8 is used to adjust the prestress of the spring 9. When the front end of the movable pin 3 is in the positioning groove, the spring 9 is in a compressed state. The reason why the spring 9 will not push the movable pin 3 at this time is that the resistance between the movable pin 3 and the damping pin 5 is greater than the elastic force of the spring 9. When the suction roller 10 starts to rotate, the movable pin 3 will be squeezed and move backward. At this time, the resistance between the movable pin 3 and the damping pin 5 is insufficient to block the movable pin 3, and the damping pin 5 will move outward. The prestress stored in the spring 9 will be released, which will continue to push the movable pin 3 backward. This allows the movable pin 3 to completely disengage from the suction roller 10, avoiding friction between the suction roller 10 and the movable pin 3.

[0029] When adhesive needs to be applied, the suction roller 10 rotates to the adhesive application position, and the operator manually pushes the movable pin 3 forward. The front end of the movable pin 3 is pushed into the positioning groove. At this time, the damping pin 5 moves inward, and the end of the damping pin 5 is located in the annular groove 6, temporarily locking the movable pin 3.

[0030] Furthermore, the front end of the movable pin 3 is hemispherical, and the movable pin 3 slides in contact with the inner wall of the external thread adjusting cap 8. The hemispherical end of the movable pin 3 can ensure that the movable pin 3 restricts the rotation of the suction roller 10 to a certain extent. When the suction roller 10 is driven to rotate by the motor, it can smoothly push the movable pin 3 backward.

[0031] Furthermore, the inner diameter of the front groove 201 of the movable pin is larger than the inner diameter of the rear groove of the movable pin. The structure of the front groove 201 and the rear groove of the movable pin is mainly to accommodate the installation of the partition 4.

[0032] Furthermore, the damping pin groove 7 is connected to the rear end groove of the movable pin, and the axis of the rear end groove of the movable pin is perpendicular to the axis of the damping pin groove 7. There can be multiple damping pin grooves 7; in this embodiment, four damping pin grooves 7 can be provided.

[0033] Furthermore, the damping pin 5 has a ball bearing at its end, which is connected by an elastic element. The purpose of the damping pin 5 is to provide a certain resistance to the movable pin 3 to overcome the thrust of the spring 9. Moreover, when the movable pin 3 is subjected to a large thrust, the damping pin 5 can undergo adaptive movement. Therefore, based on the above principle, the structure of the damping pin 5 can include various types. Among them, the structure with a ball bearing at the end of the damping pin 5 that can move elastically is one way to achieve the above principle. Similarly, as an alternative solution, the damping pin 5 can also achieve the above function by connecting to the damping pin groove 7 through an elastic element.

[0034] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.

Claims

1. A roller positioning pin mechanism, comprising a clamping block (1), characterized in that: The clamping block (1) is provided with a movable pin groove (2), which includes a movable pin front end groove (201) and a movable pin rear end groove, and the movable pin front end groove (201) and the movable pin rear end groove are connected. The movable pin groove (2) is provided with a movable pin (3), and a partition (4) is provided on the movable pin (3). The partition (4) is used to slide in the front groove (201) of the movable pin. The rear end of the movable pin (3) is provided with a slot, which cooperates with the damping pin (5). The damping pin (5) is installed in the damping pin groove (7).

2. The roller positioning pin mechanism according to claim 1, characterized in that: The card slot is a ring-shaped card slot (6).

3. The roller positioning pin mechanism according to claim 1, characterized in that: The inner wall of the movable pin front end groove (201) is provided with an internal thread. The movable pin front end groove (201) is threadedly connected to the external thread adjusting cap (8). A spring (9) is provided between the external thread adjusting cap (8) and the partition plate (4).

4. The roller positioning pin mechanism according to claim 3, characterized in that: The front end of the movable pin (3) is hemispherical, and the movable pin (3) slides with the inner wall of the external thread adjusting cap (8).

5. The roller positioning pin mechanism according to claim 1, characterized in that: The inner diameter of the front groove (201) of the movable pin is larger than the inner diameter of the rear groove of the movable pin.

6. The roller positioning pin mechanism according to claim 5, characterized in that: The damping pin groove (7) is connected to the rear end groove of the movable pin, and the axis of the rear end groove of the movable pin is perpendicular to the axis of the damping pin groove (7).

7. The roller positioning pin mechanism according to claim 1, characterized in that: The damping pin (5) has a ball at its end, and the ball is connected by an elastic element.

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