A recoating mechanism and cutting equipment

Abstract

This utility model provides a re-coating mechanism and a cutting device, belonging to the field of cutting technology. It includes: a coating rod with a roll of film wound around it, the output end of which is connected to the cutting device; two connecting rod structures located at both ends of the coating rod, rotatably connected to the ends of a crossbeam, wherein one end of each connecting rod structure is connected to the end of the coating rod; and two power sources located at both ends of the coating rod, connected to the ends of the crossbeam, wherein the output end of each power source is separably engaged with the other end of each connecting rod structure. In this utility model, because there is no direct connection between the coating rod and the output ends of the power sources, the movement of the coating rod and the movement of the power source output ends are in separable contact. This ensures that the coating rod does not generate lateral thrust when moving on the fabric surface, thereby preventing fabric arching and improving the cutting accuracy of the fabric.

Description

Technical Field

[0001] This utility model belongs to the field of cutting technology, and relates to a recoating mechanism, particularly a recoating mechanism and cutting equipment. Background Technology

[0002] The re-coating structure is widely used in automatic cutting machines to cover the fabric again during the cutting process to compensate for insufficient vacuum.

[0003] Patent application (CN201710480874.5) discloses a re-coating device for an automatic cutting bed and a cutting bed, which includes: a lifting frame, including a lifting support and a lifting drive mechanism for driving the lifting support to lift; a rotary drive component, mounted on the lifting support; a coating roller, rotatably placed on the lifting support, one end of the coating roller being connected to the rotary drive component, and the coating roller being able to rotate bidirectionally under the drive of the rotary drive component.

[0004] According to the description of the prior art above, a lifting drive mechanism is used to make the coating roller contact fabrics of different thicknesses. However, there are two problems with this prior art:

[0005] Firstly, the fabric adsorbed onto the cutting bed is not necessarily completely flat. Moreover, when there is a large amount of fabric and it is stacked, the surface of the stacked fabric is uneven. When the coating roller is directly driven up and down by the cylinder, after the height adjustment is completed, the coating roller is in a fixed state. If it encounters a raised part of the fabric, the coating roller will "push" the fabric during the rolling process, causing the fabric in that area to be arched, which in turn affects the cutting quality of the fabric.

[0006] Secondly, since the cylinder is directly connected to the coating roller, in order to ensure that the coating roller makes just the right contact with the surface of the fabric without squeezing, a high-precision cylinder is required, which will increase the cutting cost of the fabric. Utility Model Content

[0007] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a cutting device that can prevent fabric from arching during cutting, improve cutting quality, and control cutting costs.

[0008] The objective of this utility model can be achieved through the following technical solution: a recoating mechanism, comprising:

[0009] A coating rod, the axis of which is parallel to the length of the crossbeam in the cutting equipment, and a roll of film is wound on the coating rod. The output end of the roll of film is connected to the cutting equipment, and the roll of film is unfolded or retracted by the movement of the crossbeam.

[0010] Two connecting rod structures are located at both ends along the axis of the film-coated rod, and the connecting rod structures are rotatably connected to the ends of the crossbeam. One end of each of the two connecting rod structures is connected to the two ends of the film-coated rod respectively.

[0011] At least one power source is located at one end along the axis of the covering rod and is connected to the end of the crossbeam, wherein the output end of the power source forms a separable fit with the other end of one of the two linkage structures.

[0012] In the aforementioned recoating mechanism, when the coating rod rises from the position in contact with the fabric to the highest position of the protrusion on the fabric, the linkage structure does not contact the output end of the power source; when the coating rod falls back from the highest position of the protrusion on the fabric to the initial position, the linkage structure contacts and abuts against the output end of the power source.

[0013] In the aforementioned recoating mechanism, a locking part is provided on the power source, and the locking part is close to the output end of the power source, thereby locking the extension length of the current power source output end.

[0014] In the aforementioned recoating mechanism, an airflow channel is provided on the locking part, and the extension length of the current power source output end is locked by inputting airflow in the airflow channel in the opposite direction to the extension of the power source output end.

[0015] In the aforementioned recoating mechanism, a cylinder pusher is provided at the output end of the power source, and an elastic element is nested at the output end of the power source, with both ends of the elastic element connected to the cylinder pusher and the main body of the power source, respectively.

[0016] In the aforementioned recoating mechanism, the power source is connected to the end of the crossbeam via a cylinder base, and a guide structure is provided between the cylinder base and the connecting rod structure. The guide structure includes a recess or a protrusion on the cylinder base and a corresponding protrusion or recess on the connecting rod structure. The recess is arc-shaped.

[0017] In the above-mentioned recoating mechanism, the linkage structure includes a third connecting part, and one end of the third connecting part is provided with a protrusion that engages with a recess on the cylinder base, and the other end of the third connecting part is provided with a stop member that forms a separable engagement with the output end of the power source, wherein the stop member and the output end of the power source are in a rolling engagement.

[0018] In the above-mentioned recoating mechanism, the linkage structure further includes a first connecting part connected to the end of the coating rod and a second connecting part rotatably connected to the end of the crossbeam, and the two ends of the second connecting part are respectively connected to the first connecting part and the third connecting part, wherein the relative distance between the first connecting part and the second connecting part is adjustable.

[0019] In the above-mentioned recoating mechanism, there are two power sources, located at both ends along the axis of the coating rod, and the two power sources are respectively connected to the corresponding ends of the crossbeam along the length direction. The output ends of the two power sources are respectively separable from the other end of the connecting rod structure at the corresponding position.

[0020] This utility model also provides a cutting device, including the aforementioned recoating mechanism.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0022] (1) The cutting device provided by this utility model has no direct connection between the coating rod and the output end of the power source, so that the movement of the coating rod and the movement of the output end of the power source are separable contacts, thereby ensuring that the coating rod does not generate lateral thrust when it moves on the fabric surface, thereby avoiding the fabric from arching and improving the cutting accuracy of the fabric. In addition, the cylinder in this embodiment is an ordinary cylinder, thus controlling the cost of the fabric material.

[0023] (2) The abutment and the cylinder pusher are rolled abutted together, which reduces wear between the two during mutual movement and thus improves their service life.

[0024] (3) By setting a guide structure, the shaft seat, rocker arm and rocker arm can rotate more smoothly. In addition, since the rocker arm moves in a rotational motion, the concave part is set as an arc-shaped structure.

[0025] (4) By setting an elastic element at the output end of the power source, on the one hand, when the film-coating rod falls freely, it causes the abutment to hit the cylinder pusher through the swing arm, swing rod and shaft seat, thereby achieving a buffering effect. On the other hand, the retraction stroke of the cylinder pusher is controlled to improve the reliability of the power source. Attached Figure Description

[0026] Figure 1 This is a structural schematic diagram of a cutting device according to the present invention.

[0027] Figure 2 This is a partial structural schematic diagram of a cutting device according to the present invention.

[0028] Figure 3 yes Figure 2 A magnified structural diagram of point A in the middle.

[0029] In the picture,

[0030] 100. Bed; 110. Cutting area; 120. Receiving area; 130. Crossbeam; 140. Cutting head;

[0031] 200. Recoating mechanism; 210. Coating rod; 220. Roll film; 230. Linkage structure; 231. Swing arm; 232. Swing rod; 233. Bearing seat; 2331. Shaft; 2332. Mounting block; 234. Abutment; 235. Swing seat; 236. Rotating shaft; 240. Power source; 241. Cylinder pusher; 242. Cylinder base; 2421. Recess; 243. Locking part; 2431. Airflow channel; 250. Fixing structure. Detailed Implementation

[0032] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0034] like Figures 1 to 3 As shown, the present invention provides a cutting device comprising:

[0035] The bed 100 has a cutting area 110 and a receiving area 120 arranged along the material conveying direction. A crossbeam 130 that can move along the material conveying direction is arranged on the cutting area 110, and a cutting head 140 for cutting fabric is arranged on the crossbeam 130. The cutting head 140 is equipped with a cutting blade.

[0036] Recoating unit 200, comprising:

[0037] A film-coating rod 210, the axial direction of which is parallel to the length direction of the crossbeam 130, and the distance between the film-coating rod 210 and the crossbeam 130 is greater than the distance between the cutting blade and the crossbeam 130, wherein a roll film 220 is wound on the film-coating rod 210.

[0038] Two connecting rod structures 230 are located at both ends along the axis of the film-coating rod 210, and the connecting rod structure 230 is provided with a first connecting part connected to the end of the film-coating rod 210, a second connecting part rotatably connected to the end of the crossbeam 130, and a third connecting part.

[0039] Two power sources 240 are located at both ends along the axis of the covering rod 210 and connected to both ends along the length of the crossbeam 130. The output end of the power source 240 and the third connecting part form a separable fit. The relative distance between the covering rod 210 and the cutting area 110 is changed by the extension and retraction of the output end of the power source 240.

[0040] A fixing structure 250 is located between the cutting area 110 and the receiving area 120, and the fixing structure 250 is connected to the initial end of the roll film 220. Preferably, the fixing structure 250 is a linear cylinder.

[0041] It is worth mentioning that, in the initial state, the crossbeam 130 moves to the side of the cutting area 110 near the receiving area 120. At this time, the cutting head 140 and the re-coating mechanism 200 move with the crossbeam 130 to the side near the receiving area 120. When the fabric is cut, the cutting blade on the cutting head 140 cuts the fabric along a preset trajectory. At this time, the crossbeam 130 also moves away from the receiving area 120, thereby realizing the unfolding of the roll film 220. The fabric in the cutting area 110 is fixed to the cutting area 110 by negative pressure. Therefore, a negative pressure area is formed in the cutting area 110. So the unfolded film will adhere to the surface of the fabric under the influence of negative pressure, thereby solving the air leakage problem caused by the fabric being cut.

[0042] Furthermore, since the output end of the power source 240 and the third connecting part of the connecting rod structure 230 are connected by a contact-type abutment connection, i.e., a separable structure, the output end of the power source 240 is not directly connected to the coating rod 210. Therefore, the coating rod 210, based on its own weight, can change the relative distance between the coating rod 210 and the plane containing the cutting area 110 by rotating between the second connecting part and the end of the crossbeam 130.

[0043] When cutting the fabric, the laminating rod 210 is first raised to contact the top layer of the stacked fabric. There are two ways to raise it: one is for the worker to directly place the laminating rod 210 on the top layer of the stacked fabric, in which case the output end of the power source 240 is not in contact with the third connecting part; the other is for the output end of the power source 240 to extend and contact the third connecting part at that position while inflated, locking the extension length of the current output end of the power source 240. At this point, the lowest position of the laminating rod 210 is locked. When the laminating rod 210 encounters a protrusion while moving on the fabric surface, it will be automatically pushed up because the third connecting part is connected to the third connecting part. The output ends of the power source 240 are only connected by abutting, not directly connected and fixed. Therefore, the third connecting part can be detached from the output end of the power source 240. When the coating rod 210 crosses the protrusion on the fabric, it will fall back under its own weight. The lowest position after falling back is the position where the third connecting part and the output end of the power source 240 abut again. Therefore, when the coating rod 210 moves on the fabric surface, it will not arch the fabric due to the unevenness of the fabric, thereby improving the fabric cutting accuracy. If it encounters a concave position on the fabric, the abutting between the third connecting part and the output end of the power source 240 will prevent the coating rod 210 from falling due to its own weight. Another method involves first pushing the laminating rod 210 to a certain height via the output end of the power source 240. This height is generally higher than the position of the top layer of the laminated fabric. Then, due to its own weight, the laminating rod 210 retracts as it falls back, through the abutment between the third connecting part and the output end of the power source 240. This continues until the laminating rod 210 contacts the top layer of the laminated fabric, locking the extension length of the current power source 240 output end. When the laminating rod 210 encounters a protrusion on the fabric surface, it is automatically pushed up. At this point, the third connecting part separates from the output end of the power source 240 again. After the laminating rod 210 crosses the protrusion on the fabric, it falls back under its own weight. The lowest position after falling back is where the third connecting part abuts against the output end of the power source 240 again. Therefore, the laminating rod 210 does not arch the fabric due to its unevenness when moving on the fabric surface, thus improving the accuracy of fabric cutting.

[0044] It is worth mentioning that the power source 240 in this embodiment is a cylinder. When the cylinder's output end extends, it is achieved by filling the cylinder with compressed air. When the cylinder's output end retracts, it is forced back by external force. For example, in this embodiment, when the coating rod 210 falls back under its own gravity, the connecting rod structure 230 acts on the output end of the power source 240, causing the output end of the power source 240 to retract. The premise is that the output end of the cylinder is not locked at this time.

[0045] The cutting device provided by this utility model has a separable contact between the movement of the coating rod 210 and the output end of the power source 240 because there is no direct connection between the coating rod 210 and the output end of the power source 240. This ensures that the coating rod 210 does not generate lateral thrust when moving on the fabric surface, thereby avoiding the fabric from arching and improving the cutting accuracy of the fabric. In addition, the cylinder in this embodiment is a common cylinder, thus controlling the cost of the fabric material.

[0046] Furthermore, the distance between the first connecting part and the second connecting part is relatively adjustable, thereby changing the relative distance between the film-coated rod 210 and the crossbeam 130 in the initial state.

[0047] Preferably, the linkage structure 230 includes a swing arm 231 connected to the end of the film-coated rod 210, a swing rod 232 rotatably connected to the end of the crossbeam 130 and connected to the swing arm 231, a bearing seat 233 connected to the swing rod 232, and an abutment 234 nested on the bearing seat 233. The output end of the power source 240 is provided with a cylinder pusher 241, and the cylinder pusher 241 and the abutment 234 form a separable fit.

[0048] It is worth mentioning that when the power source 240 is inflated, causing the cylinder pusher 241 on the output end of the power source 240 to extend, the cylinder pusher 241 pushes the abutment 234, which drives the rocker arm 232 to rotate via the bearing 233, and then drives the rocker arm 231 to rotate, thereby realizing that the coating rod 210 moves up the plane away from the cutting area 110; when the coating rod 210 falls freely down the plane close to the cutting area 110, the abutment 234 is driven to push the cylinder pusher 241 via the rocker arm 231, the rocker arm 232 and the bearing 233, causing the output end of the power source 240 to retract.

[0049] It is further pointed out that the abutment 234 and the cylinder pusher 241 are in rolling contact.

[0050] In this embodiment, the abutment 234 and the cylinder pusher 241 roll against each other, which reduces wear between them during mutual movement and thus improves their service life.

[0051] It is worth mentioning that the abutment 234 is a bearing, and the axial direction of the abutment 234 forms a preset angle with the axial direction of the cylinder pusher 241, wherein the side of the abutment 234 is in contact with the front of the cylinder pusher 241.

[0052] Preferably, the power source 240 is connected to the end of the crossbeam 130 via the cylinder base 242, and a guide structure is provided between the cylinder base 242 and the bearing seat 233. The guide structure includes a recess 2421 provided on the cylinder base 242 and a protrusion provided on the bearing seat 233, wherein the recess 2421 is arc-shaped.

[0053] It is worth mentioning that the positions of the recess 2421 and the convex part can be interchanged, that is, the convex part is set on the cylinder base 242 and the recess 2421 is set on the bearing seat 233.

[0054] In this embodiment, by setting a guide structure, the shaft seat 233, the rocker arm 232 and the rocker arm 231 rotate more smoothly. In addition, since the rocker arm 232 moves in a rotational motion, the recess 2421 is set as an arc-shaped structure.

[0055] More preferably, the bearing seat 233 includes a shaft 2331, which is connected to the rocker arm 232 by a mounting block 2332, wherein the abutment 234 and the protrusion are located at both ends along the axial direction of the shaft 2331.

[0056] Preferably, the output end of the power source 240 is provided with an elastic element, one end of which is connected to the body of the power source 240 and the other end of which is connected to the cylinder pusher 241. When the output end of the power source 240 extends, the elastic element is stretched; when the output end of the power source 240 retracts, the elastic element is compressed.

[0057] In this embodiment, by setting an elastic element at the output end of the power source 240, on the one hand, when the film-coating rod 210 falls freely, it causes the abutment 234 to impact the cylinder pusher 241 through the swing arm 231, the swing rod 232 and the bearing seat 233, thereby achieving a buffering effect. On the other hand, it controls the retraction stroke of the cylinder pusher 241, thereby improving the reliability of the power source 240.

[0058] Preferably, the linkage structure 230 further includes a swing seat 235, which is connected to the end of the crossbeam 130. The swing seat 235 is provided with a rotating shaft 236, and the swing rod 232 is rotatably engaged with the rotating shaft 236.

[0059] Preferably, a locking part 243 is provided on the power source 240, and an airflow passage 2431 is provided on the locking part 243. When gas is introduced into the airflow passage 2431, the extension length of the current power source 240 output end is locked.

[0060] It is worth mentioning that after the cylinder on the power source 240 is filled with air, the output end of the power source 240 will extend a certain distance. Then, airflow in the airflow channel 2431 is input in the opposite direction to the extension of the output end, thereby locking the length of the extension of the output end of the power source 240.

[0061] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is 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 as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0062] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0063] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A film re-coating mechanism characterized by, include: A coating rod, the axis of which is parallel to the length of the crossbeam in the cutting equipment, and a roll of film is wound on the coating rod. The output end of the roll of film is connected to the cutting equipment, and the roll of film is unfolded or retracted by the movement of the crossbeam. Two connecting rod structures are located at both ends along the axis of the film-coated rod, and the connecting rod structures are rotatably connected to the ends of the crossbeam. One end of each of the two connecting rod structures is connected to the two ends of the film-coated rod respectively. At least one power source is located at one end along the axis of the covering rod and is connected to the end of the crossbeam, wherein the output end of the power source forms a separable fit with the other end of one of the two linkage structures.

2. The recoating mechanism according to claim 1, characterized in that, When the coating rod rises from the position in contact with the fabric to the highest position of the protrusion on the fabric, the linkage structure does not contact the output end of the power source; when the coating rod falls back to the initial position from the highest position of the protrusion on the fabric, the linkage structure contacts and abuts against the output end of the power source.

3. The recoating mechanism according to claim 1, characterized in that, The power source is provided with a locking part, which is close to the output end of the power source, and the extension length of the current output end of the power source is locked by the locking part.

4. The recoating mechanism according to claim 3, characterized in that, The locking part is provided with an airflow channel, and the extension length of the current power source output end is locked by inputting airflow in the airflow channel in the opposite direction to the extension of the power source output end.

5. The recoating mechanism according to any one of claims 1 to 4, characterized in that, The output end of the power source is equipped with a cylinder pusher, and an elastic element is nested in the output end of the power source. The two ends of the elastic element are respectively connected to the cylinder pusher and the body of the power source.

6. The recoating mechanism according to claim 5, characterized in that, The power source is connected to the end of the crossbeam via a cylinder base, and a guide structure is provided between the cylinder base and the connecting rod structure. The guide structure includes a concave or convex part on the cylinder base and a corresponding convex or concave part on the connecting rod structure. The concave part is arc-shaped.

7. The recoating mechanism according to claim 6, characterized in that, The connecting rod structure includes a third connecting part, and one end of the third connecting part is provided with a protrusion that engages with a recess on the cylinder base. The other end of the third connecting part is provided with a stop member that forms a separable engagement with the output end of the power source, wherein the stop member and the output end of the power source are in a rolling engagement.

8. The recoating mechanism according to claim 7, characterized in that, The linkage structure also includes a first connecting part connected to the end of the film-coated rod, and a second connecting part rotatably connected to the end of the crossbeam, wherein the two ends of the second connecting part are respectively connected to the first connecting part and the third connecting part, and the relative distance between the first connecting part and the second connecting part is adjustable.

9. The recoating mechanism according to claim 1, characterized in that, There are two power sources, located at both ends along the axis of the film-coating rod, and the two power sources are respectively connected to the corresponding ends of the crossbeam along the length direction. The output ends of the two power sources are respectively separable from the other end of the connecting rod structure at the corresponding position.

10. A cutting device, characterized in that, Includes the recoating mechanism as described in any one of claims 1 to 9.

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