Safety switch device for head cover of tobacco cutter
By adopting a push-button safety switch device on the head cover of the shredder, the problem of difficult alignment caused by long-term use of the head cover safety limit switch is solved, realizing highly reliable and low-cost position detection and limit functions, ensuring the normal operation of the shredder.
Patent Information
- Application Number
- CN202423080800.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2034-12-13
AI Technical Summary
The safety limit switch of the existing shredder head cover is prone to misalignment between the insert and the hole after long-term use due to deformation of the base of the fixed insert or deviation of the head cover position, which prevents it from closing properly and affects the use of the shredder.
The push-button safety switch device includes a safety switch body, limit contact point, spring cylinder, pressing component, and protective component. Position detection and limiting are achieved by pressing the spring cylinder, and the protective component prevents accidental contact. It has a simple structure and low alignment accuracy requirements.
It achieves high reliability in head cover position detection and limit, prevents accidental activation, ensures normal operation of the shredder, and is low in cost and has strong anti-interference capabilities.
Smart Images
Figure CN223694906U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of shredding machine, concretely relates to a shredding machine head cover safety switch device. BACKGROUND
[0002] In the tobacco factory's silk making workshop, all the machine body doors of the widely used SD215 series shredding machine adopt certain AZ16-ZVK series safety limit switch, and the switches of the series are all inserted piece type switches. The relative position between the inserted piece and the slot of the inserted piece type switch is particularly strict, and once the position of the inserted piece does not match the position of the jack, the safety limit switch cannot be normally closed.
[0003] However, the safety limit switch of the head cover will be deformed in the long-term use process, or the position of the head cover connected with the base will be deviated, which easily leads to the position mismatching of the inserted piece and the jack, and the safety limit switch of the head cover cannot be closed, so that the shredding machine cannot be normally used, and it is necessary to improve. UTILITY MODEL CONTENTS
[0004] The utility model aims at providing a shredding machine head cover safety switch device, which solves the problem of difficult alignment of the inserted piece type switch of the existing safety limit switch after long-term use.
[0005] In order to achieve the above technical purpose, the utility model adopts the following technical scheme:
[0006] A shredding machine head cover safety switch device is used for position detection and limiting of the head cover, which comprises a safety switch body and a limiting contact point arranged opposite to the safety switch body, the safety switch body is installed on the base of the head cover, and the safety switch body has a spring cylinder arranged towards the limiting contact point; the limiting contact point is installed with a pressing piece, the length direction of the pressing piece is consistent with the extension direction of the spring cylinder; the base is installed with a protection piece, and the protection piece is located outside the spring cylinder close to one end of the pressing piece; the center of the protection piece has a pressing channel for the pressing piece to pass through, so that when the safety switch body moves towards the pressing piece, the pressing piece presses the spring cylinder to change the state of the safety switch body.
[0007] Further limited, the bottom of the limiting contact point is fixedly installed with a fixing frame, the fixing frame is installed with a fixed nut, and the pressing piece is detachably installed on the fixed nut.
[0008] Further limited, the pressing piece is a round head bolt, and the round head bolt is connected with the fixed nut.
[0009] Further limited, the safety switch body is installed on the base of the head cover through a mounting frame.
[0010] Further limited, the guard includes a connecting nut fixed on the mounting frame.
[0011] Further limited, the guard includes a limiting rod installed on the mounting frame; an end of the limiting rod is provided with a buffer cap for damping.
[0012] Further limited, the limiting rod is arranged above the pressing channel, an eccentric block is sleeved on the limiting rod, and a slope is arranged on the surface of the eccentric block away from the spring cylinder; the bottom of the eccentric block is located in the extension direction of the pressing channel, and the pressing member first abuts against the slope and pushes the eccentric block away by applying a pushing force when passing through the pressing channel.
[0013] Further limited, the eccentric block includes a limiting hole section, a transition section and a counterweight section arranged integrally, the limiting hole section is provided with a limiting hole in rotational connection with the limiting rod, and the counterweight section is in a semicircular table structure.
[0014] The utility model with the above technical scheme has the following advantages:
[0015] In the application, the safety switch is of the pressing type instead of the plug-in type, the pressing alignment precision requirement is low, the position detection and limiting of the head cover can be realized more conveniently, and the normal operation of the tobacco cutter is ensured. The guard is arranged on the outer side of the spring cylinder of the safety switch body, the safety switch body can be prevented from being triggered by mistake by the operator or foreign matters, and the reliability is high. In addition, the guard is only needed to be added, the position detection with high reliability and low alignment precision requirement can be realized by cooperation of the safety switch, the design of the pure mechanical structure has high reliability in adjustment and strong anti-interference capability, and the overall structure is simple, the cost is low, and the practicality is high. BRIEF DESCRIPTION OF DRAWINGS
[0016] The utility model can be further illustrated by the non-limiting embodiments shown in the drawings.
[0017] Figure 1 It is a front view of an embodiment of the safety switch device for the head cover of the tobacco cutter according to the utility model.
[0018] Figure 2 It is a first structure schematic view of an embodiment of the safety switch device for the head cover of the tobacco cutter according to the utility model.
[0019] Figure 3 It is a second structure schematic view of an embodiment of the safety switch device for the head cover of the tobacco cutter according to the utility model.
[0020] Figure 4 For the structure diagram of the safety switch body entering the pressing state in an embodiment of the safety switch device of the cutter head cover of the tobacco cutter;
[0021] Figure 5 For Figure 4 The enlarged schematic view at A in the middle;
[0022] Figure 6 For the structure diagram of the safety switch body in standby state in an embodiment of the safety switch device of the cutter head cover of the tobacco cutter;
[0023] Figure 7 For the assembly diagram of the limiting rod and the eccentric block in the embodiment of the utility model;
[0024] Figure 8 For the structure diagram of the eccentric block in the embodiment of the utility model;
[0025] The main component symbols are explained as follows:
[0026] 100, pressing piece; 101, fixed frame; 102, reinforcing rib; 103, connecting block; 104, fixed nut; 200, protection piece; 201, mounting frame; 202, connecting hole; 203, fixed screw; 204, welded edge; 205, limiting rod; 2051, buffer cap; 206, eccentric block; 207, limiting hole section; 208, transition section; 209, counterweight section; 210, inclined surface; 300, safety switch body; 310, spring cylinder; 400, cutter head cover. DETAILED DESCRIPTION
[0027] The utility model will be described in detail below in combination with the drawings and specific embodiments, and it should be noted that in the drawings or description, similar or identical parts use the same figure number, and the implementation mode not drawn or described in the drawings is the form known by the ordinary skilled in the art. In addition, the direction terms mentioned in the embodiments, such as "up", "down", "top", "bottom", "left", "right", "front", "back" and the like, are only the direction of the drawings, and are not used to limit the protection scope of the utility model.
[0028] As Figures 1-3 shown, the safety switch device of the cutter head cover of the tobacco cutter in the embodiment of the utility model is used for position detection and limiting of the cutter head cover 400, and includes a safety switch body 300 and a limiting contact point B arranged opposite to the safety switch body 300. During use of the cutter head cover 400, the cutter head cover 400 can move relative to the limiting contact point B, and the movement direction can refer to Figure 1The left and right movement V in the machine head cover 400; the safety switch body 300 is installed on the base of the machine head cover 400, and the spring cylinder 310 of the safety switch body 300 is arranged towards the limiting contact point B; when the spring cylinder 310 of the safety switch body 300 is pressed, the state of the electric contact in the safety switch body 300 is converted from normally open to normally closed; so as to trigger the signal or action in the interlocking device where the machine head cover is located. The limiting contact point B is installed with a pressing piece 100, the length direction of the pressing piece 100 is consistent with the extension direction of the spring cylinder 310, wherein the pressing piece 100 can adopt a round head bolt; the base is installed with a protection piece 200, the protection piece 200 is located outside the spring cylinder 310 close to one end of the pressing piece 100; the center of the protection piece 200 has a pressing channel for the round head bolt to pass through, so that when the pressing piece 100 of the safety switch body 300 moves, the pressing piece 100 presses the spring cylinder 310 to change the state of the safety switch body 300.
[0029] The round head bolt in the embodiment tends to contact with the spring cylinder 310 when the machine head cover moves in the direction thereof, until the pressing state; the contact area between the round head bolt and the spring cylinder 310 is large, and high alignment accuracy is not required, and the safety limiting reliability is high. The protection piece 200 is outside the spring cylinder 310, which can effectively avoid the spring cylinder 310 from being mistakenly touched or pressed.
[0030] As shown in Figure 1 , in the embodiment, the bottom of the limiting contact point B is fixedly installed with a fixed frame 101, the fixed frame 101 is installed with a fixed nut 104, and the pressing piece 100 is detachably installed on the fixed nut 104. Among them, the fixed nut 104 can be welded on the fixed frame 101; the connection is firm and reliable.
[0031] As shown in Figure 3 , in the embodiment, the fixed frame 101 adopts an L-shaped profile; in order to improve the stability of the pressing piece 100 when pressing, a reinforcing rib 102 is installed at the corner of the L-shaped profile; thereby improving the structural strength of the fixed frame 101.
[0032] As shown in Figure 2 , in the embodiment, the fixed frame 101 is installed with a connecting block 103, and the fixed frame 101 and the connecting block 103 are both provided with connecting light holes, and the fixed nut 104 is fixed on the connecting block 103; the round head bolt thread is connected with the fixed nut 104, and passes through the connecting light holes of the connecting block 103 and the fixed frame 101.
[0033] As shown in Figure 1 , Figure 3As shown, the safety switch body 300 of the present embodiment can be mounted on the base of the head cover 400 through a mounting frame 201; the guard 200 includes a connecting nut which is fixed on the mounting frame 201 by welding; the connecting nut used in actual application is a hexagonal nut, and a welding edge 204 is formed between the hexagonal nut and the mounting frame 201. The connecting nut and the spring cylinder 310 are located on an axis; a round head bolt can pass through the center of the connecting nut (i.e. the pressing channel C in the figure) and contact the spring cylinder 310. The outer diameter of the head of the round head bolt is smaller than the inner diameter of the connecting nut; such a structure design can fully utilize existing nut, bolt and other components, and basically no additional procurement is needed to obtain the safety switch device of the tobacco cutter head cover of the present embodiment; the design and reconstruction cost is low. Figure 5
[0034] As shown in Figure 4 , Figure 5 In the present embodiment, the guard 200 includes a limiting rod 205 which is mounted on the mounting frame 201; the end of the limiting rod 205 is provided with a buffer cap 2051 for damping.
[0035] The limiting rod 205 can be mounted on the mounting frame 201 by welding on the welding edge 204; in fact, it can also be directly welded on the mounting frame 201. When the round head bolt abuts against the spring cylinder 310 and presses the switch, the buffer cap 2051 of the limiting rod 205 abuts against the fixing frame 101, which plays a role in relieving the inertial impact generated when the head cover 400 stops moving. When the connecting block 103 is mounted on the fixing frame 101, the connecting block 103 can be made of copper material, which is softer than alloy and has a certain softness, which can cooperate with the buffer cap 2051 to provide two levels of buffer energy dissipation and protect the spring cylinder 310. In fact, the connecting block 103 can also be a rubber pad.
[0036] In addition, a limiting piece can also be mounted on the round head bolt, and the limiting piece is opposite to the limiting rod 205; when the limiting rod 205 moves to the position where the round head bolt presses the spring cylinder 310, the limiting piece blocks the further movement of the limiting rod 205, which plays a role in auxiliary limiting and avoids the round head bolt generating too much force on the spring cylinder 310 which is pressed by it.
[0037] As shown in Figure 7 As shown, in the embodiment, an eccentric block 206 can be installed on the mounting frame 201 through the limiting rod, the bottom part of the eccentric block 206 is located on the movement path of the spring cylinder 310, the spring cylinder 310 can be shielded, thereby playing a protection role; when the spring cylinder 310 moves relative to the round head bolt, the round head bolt first contacts the inclined surface 210 of the eccentric block 206, pushes the eccentric block 206 radially away, the eccentric block 206 is opened, and the spring cylinder 310 continues to approach the round head bolt until pressing is realized.
[0038] As shown in Figure 4 , Figure 5 and Figure 8 , in the embodiment, the limiting rod 205 is arranged above the pressing channel C, the eccentric block 206 is sleeved on the limiting rod 205, the eccentric block 206 includes a limiting hole section 207, a transition section 208 and a counterweight section 209 which are arranged integrally, the limiting hole section 207 is provided with a limiting hole which is rotationally connected with the limiting rod 205, the transition section 208 is a straight plate, and the counterweight section 209 is a semicircular table structure, the transition section 208 is connected on the same side of the limiting hole section 207 and the counterweight section 209, so that the center of gravity of the eccentric block 206 is eccentric; the surface of the eccentric block 206 away from the spring cylinder 310 is provided with an inclined surface 210; under the action of gravity, when the eccentric block 206 is not pushed away by the round head bolt, the bottom of the eccentric block 206 is located in the extension direction of the pressing channel C, the round head bolt first abuts against the inclined surface 210 when passing through the pressing channel C, and a pushing force is applied to push the eccentric block 206 away, forming a similar pressing channel C; then, the round head bolt abuts against the spring cylinder 310 when passing through the pressing channel C, and pressing and limiting occur. It can be understood that when the safety switch body 300 is reset, the eccentric block 206 can be manually pushed away, so that the round head bolt is separated from the eccentric block 206 and the connecting nut; or, the back surface of the eccentric block 206 is also provided with an inclined surface 210, and the inclined surface 210 arranged on the back surface can guide the round head bolt to separate from the eccentric block 206.
[0039] As mentioned above, the protection piece 200 can select the connecting nut or the eccentric block 206, or the combination of the connecting nut and the eccentric block 206, to provide more flexible design options, the structure is relatively simple, and the device has high practicability.
[0040] As shown in Figure 1 , Figure 5 and Figure 6As shown, the working process of the safety switch body 300 in the embodiment, when the head cover 400 is opened, the safety switch body 300 is in the normally open state; the protective piece 200 is shielded outside the spring cylinder 310, which plays a protective role of avoiding accidental touch. When the head cover 400 starts to close, the mounting frame 201 connected with the head cover 400, the safety switch body 300 and the spring cylinder 310 move relative to the direction of the round head bolt; the round head bolt passes through the center of the connecting nut, or pushes away the eccentric block so that the spring cylinder 310 can abut against the round head bolt, the spring cylinder 310 is pressed and limited by the round head bolt.
[0041] Such a structure design, instead of the existing plug-in switch, when the head cover 400 is closed, the pressing piece 100 has low accuracy requirement for the pressing of the spring cylinder 310, which can more conveniently realize the position detection and limiting of the head cover 400, and ensure the normal operation of the shredding machine; the protective piece 200 arranged outside the spring cylinder 310 of the safety switch body 300 can effectively prevent the accidental triggering of the safety switch body 300 by the operator or foreign matter, and has high reliability. In addition, the device only needs to increase the protective piece 200, and can realize the position detection with high reliability and low accuracy requirement by cooperating with the safety switch. The pure mechanical structure design makes the safety switch have high reliability and strong anti-interference ability; and the overall structure is simple, low in cost and high in practicability.
[0042] The safety switch device for the head cover of the shredding machine is described in detail above. The description of the specific embodiment is only used to help understand the method and the core idea of the utility model. It should be pointed out that for ordinary skilled persons in the technical field, the utility model can be improved and modified on the premise of not departing from the principle of the utility model, and these improvements and modifications also fall within the protection scope of the utility model claim.
Claims
1. A safety switch device for a shredder head cover, used for position detection and limiting of the head cover (400), comprising a safety switch body (300) and a limiting contact point disposed opposite to the safety switch body (300), the safety switch body (300) being mounted on a base of the head cover (400), and the safety switch body (300) having a spring cylinder (310) disposed toward the limiting contact point; characterized in that, The limiting contact point is equipped with a pressing member (100), the length direction of the pressing member (100) is consistent with the extension and retraction direction of the spring cylinder (310); a protective member (200) is installed on the base, the protective member (200) is located on the outer side of the spring cylinder (310) near the pressing member (100); the center of the protective member (200) has a pressing channel for the pressing member (100) to pass through, so that when the safety switch body (300) moves toward the pressing member (100), the pressing member (100) presses the spring cylinder (310) and changes the state of the safety switch body (300).
2. The safety switch device for the head cover of a shredder according to claim 1, characterized in that: A fixing bracket (101) is fixedly installed at the bottom of the limiting contact point, and a fixing nut (104) is installed on the fixing bracket (101). The pressing member (100) is detachably installed on the fixing nut (104).
3. The safety switch device for the head cover of a shredder according to claim 2, characterized in that: The pressing component (100) is a round-headed bolt, which is connected to the fixing nut (104).
4. The safety switch device for the head cover of a shredder according to claim 1, characterized in that: The safety switch body (300) is mounted on the base of the head cover (400) via a mounting bracket (201).
5. The safety switch device for the head cover of a shredder according to claim 4, characterized in that: The protective component (200) includes a connecting nut, which is fixed to the mounting bracket (201).
6. The safety switch device for the head cover of a shredder according to claim 4, characterized in that: The protective component (200) includes a limiting rod (205) which is mounted on the mounting bracket (201); the end of the limiting rod (205) is fitted with a shock-absorbing cap (2051).
7. The safety switch device for the head cover of a shredder according to claim 6, characterized in that: The limiting rod (205) is disposed above the pressing channel, and an eccentric block (206) is sleeved on the limiting rod (205). The surface of the eccentric block (206) away from the spring cylinder (310) is provided with an inclined surface (210). The bottom of the eccentric block (206) is located in the extending direction of the pressing channel. When the pressing member (100) passes through the pressing channel, it first abuts against the inclined surface (210) and applies a pushing force to push the eccentric block (206) away.
8. The safety switch device for the head cover of a shredder according to claim 7, characterized in that: The eccentric block (206) includes an integrally formed limiting hole section (207), a transition section (208), and a counterweight section (209). The limiting hole section (207) is provided with a limiting hole that is rotatably connected to the limiting rod (205). The counterweight section (209) has a semi-circular structure.