A cutting mechanism of a rail type sponge flat cutting machine

Abstract

The utility model discloses a kind of cutting mechanism of rail type sponge flat cutting machine, including rack, first cutting mechanism is equipped on the rack, second cutting mechanism is equipped on the first cutting mechanism, the utility model cutting mechanism of rail type sponge flat cutting machine is provided with the linkage structure of first cutting mechanism and second cutting mechanism, wherein first electric push rod transverse drive first support rotation to adjust the overall height of mounting plate, second electric push rod is obliquely driven to rotate second support to fine adjustment control the position of cutting knife belt assembly, and the design of the opposite telescopic direction of two electric push rods realizes collaborative stable motion, to effectively solve the problem that cutting knife height adjustment is inconvenient in the prior art, precision reduces due to movement offset, ensure the positioning accuracy and high flexibility of cutting process, improve the flat cutting precision and efficiency of different thickness sponge.

Description

Technical Field

[0001] This utility model relates to the field of sponge flat cutting technology, specifically to a cutting mechanism for a rail-mounted sponge flat cutting machine. Background Technology

[0002] As described in the published patent CN220903441U, "A Polyurethane Sponge Flat Cutting Equipment," polyurethane sponge is a sponge-like product made of polyurethane material. It is produced by mixing polyurethane material and injecting it into a mold, then curing it under specific temperature and pressure. Polyurethane sponge possesses excellent elasticity and softness, and can be widely used in furniture, mattresses, car seats, shoe insoles, sound insulation materials, filters, and other fields. It has sound absorption, shock absorption, heat insulation, and waterproof properties, while also exhibiting good breathability and durability. Due to the wide range of applications of polyurethane sponge, its processing precision needs to be guaranteed.

[0003] In existing technologies, when flat-cutting polyurethane foam, the foam is placed on a cutting table with sandpaper to increase friction. The cutting blade is used to adjust the vertical position each time. Since there are many parts connected to the cutting blade, after long-term movement, if maintenance is not in place, the movement may become inaccurate, reducing the precision of flat-cutting the foam. Furthermore, since the blade moves up and down, the operator cannot judge whether the cutting position is accurate. Therefore, a polyurethane foam flat-cutting device with accurate positioning and no blade deviation is needed.

[0004] As described in the published patent CN207256347U, "A Sponge Track Flat Cutting Machine," the sponge layer is an elastic material produced by mixing foaming resin, foaming aid, and adhesive resin together and then processing it into a foam. The produced sponge layer is a single piece, which can be cut by the user according to needs or different uses. Existing sponge track flat cutting machines can cut sponge layers; however, the height of the blades in such machines is fixed and cannot be adjusted when cutting sponge layers, limiting their ability to cut sponge layers of a fixed thickness.

[0005] In summary, some existing sponge track flat cutting machines have the problem of inconvenient height adjustment. Utility Model Content

[0006] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution for the cutting mechanism of a rail-mounted sponge flat cutter that can solve the above problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A cutting mechanism for a rail-mounted sponge flat cutter includes a frame, a first cutting mechanism on the frame, and a second cutting mechanism on the first cutting mechanism;

[0009] The first cutting mechanism includes a first bracket rotatably disposed at the rear end of the frame, a first electric push rod horizontally disposed at the front end of the frame, the working shaft of the first electric push rod being rotatably connected to the middle part of the first bracket, and a mounting plate being fixedly installed at the lower end of the first bracket;

[0010] The second cutting mechanism includes a second bracket rotatably mounted at the front end of the mounting plate, a second electric push rod inclined upward fixed at the rear end of the mounting plate, the working shaft of the second electric push rod being rotatably connected to the upper end of the second bracket, and a cutting blade assembly being fixedly mounted at the lower end of the second bracket;

[0011] The extension and retraction directions of the first and second electric push rods are opposite.

[0012] As a further embodiment of this utility model: the frame is symmetrically arranged on the left and right, and a bracket mounting seat extending backward is provided on the frame. A first bearing seat is installed on the bracket mounting seat. The first bracket includes a first vertical bracket symmetrically arranged on the left and right and a first horizontal bracket fixed between the first vertical brackets symmetrically arranged on the left and right. A first rotating shaft is fixedly installed on the outer wall of the first vertical bracket and rotates in the first bearing seat.

[0013] As a further embodiment of this utility model: the mounting plate is detachably fixedly mounted on the lower end of the first vertical bracket, and a second bearing seat is fixedly mounted on the front end of the mounting plate. The second bracket includes two symmetrically arranged vertical second vertical brackets on the left and right and a second transverse bracket fixed between the two symmetrically arranged vertical second vertical brackets. A second rotating shaft is fixedly mounted on the outer wall of the second vertical bracket and rotates within the second bearing seat.

[0014] As a further embodiment of this utility model: the mounting plate is detachably fixed to the outer wall of the first vertical bracket, and a clamping mounting seat is detachably fixed to the inner side of the front end of the mounting plate. The clamping mounting seat has a clamping mounting groove and an expansion joint communicating with the clamping mounting groove. The rear side wall of the clamping mounting seat is fitted to the first vertical bracket. An electric push rod mounting seat is fixedly installed in the clamping mounting groove. An electric push rod mounting hole is opened on the electric push rod mounting seat, and the second electric push rod is fixedly installed in the electric push rod mounting hole.

[0015] As a further embodiment of this utility model: the cutting blade assembly includes a blade holder component that is detachably and fixedly mounted on the lower end of the second vertical support. The second vertical support has a T-shaped groove along its length. The blade holder component has a blade holder mounting hole. A blade holder bolt is installed in the blade holder mounting hole. A blade holder nut that locks with the blade holder bolt is installed in the T-shaped groove. The blade holder components are symmetrically arranged on the left and right sides of the second vertical support, and a blade belt component is fixed between the symmetrical blade holder components.

[0016] As a further embodiment of this utility model: the frame is provided with a vertical slide rail, a vertical adjustment slider is slidably provided on the vertical slide rail, a base plate component is fixedly connected to the vertical adjustment slider, a base plate crossbeam is fixedly provided on the frame below the base plate component, a screwing component is installed on the base plate crossbeam, the screwing component is screwed into the base plate crossbeam and the upper end of the screwing component passes through the base plate crossbeam and rotates with the base plate component.

[0017] As a further embodiment of this utility model: a chamfer is provided at the junction of the upper end and the front end of the mounting plate.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] The cutting mechanism of this utility model track-type sponge flat cutter is equipped with a linkage structure of a first cutting mechanism and a second cutting mechanism. The first electric push rod drives the first bracket to rotate laterally to adjust the overall height of the mounting plate, and the second electric push rod tilts upward to drive the second bracket to rotate to finely adjust the position of the cutting blade assembly. The design of the two electric push rods extending and retracting in opposite directions achieves coordinated and stable movement, thereby effectively solving the problems of inconvenient cutting blade height adjustment and reduced accuracy due to movement deviation in the prior art. It ensures the positioning accuracy and high flexibility of the cutting process, and improves the flat cutting accuracy and efficiency of polyurethane sponges of different thicknesses. Attached Figure Description

[0020] Figure 1 This is a three-dimensional view of the working structure of this utility model;

[0021] Figure 2 This is a three-dimensional structural view of the present invention;

[0022] Figure 3 This is another three-dimensional view of the structure of this utility model;

[0023] Figure 4 This is a front view of the present invention;

[0024] Figure 5 yes Figure 4 A cross-sectional view along the AA direction;

[0025] Figure 6 yes Figure 5A three-dimensional structural view of the front end of the sectional view;

[0026] Figure 7 yes Figure 5 The rear three-dimensional structure diagram of the mid-section view;

[0027] The reference numerals and names in the figure are as follows:

[0028] Frame-100, First cutting mechanism-101, Second cutting mechanism-102, First bracket-103, First electric push rod-104, Mounting plate-106, Second bracket-107, Second electric push rod-108, Cutting blade assembly-109, Bracket mounting base-110, First bearing seat-111, First vertical bracket-112, First horizontal bracket-113, Second bearing seat-115, Second vertical bracket -116, Second transverse support -117, Clamping mounting base -119, Clamping mounting groove -120, Expansion joint -121, Electric push rod mounting base -122, Electric push rod mounting hole -123, Tool holder component -124, T-shaped slide groove -125, Tool holder mounting hole -126, Tool belt component -128, Vertical adjustment slider -130, Base plate component -131, Base plate crossbeam -132, Tightening component -133, Chamfered part -134. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-7 A cutting mechanism for a rail-mounted sponge flat cutter includes a frame 100, on which a first cutting mechanism 101 is provided, and on which a second cutting mechanism is provided;

[0031] The first cutting mechanism 101 includes a first bracket 103 rotatably disposed at the rear end of the frame 100, a first electric push rod 104 horizontally disposed at the front end of the frame 100, the working shaft of the first electric push rod 104 being rotatably connected to the middle part of the first bracket 103, and a mounting plate 106 being fixedly installed at the lower end of the first bracket 103.

[0032] The second cutting mechanism 102 includes a second bracket 107 rotatably mounted on the front end of the mounting plate 106. A second electric push rod 108 inclined upward is fixedly mounted on the rear end of the mounting plate 106. The working shaft of the second electric push rod 108 is rotatably connected to the upper end of the second bracket 107. A cutting blade assembly 109 is fixedly mounted on the lower end of the second bracket 107.

[0033] The extension and retraction directions of the first electric push rod 104 and the second electric push rod 108 are opposite;

[0034] In this utility model's cutting mechanism, the first cutting mechanism 101 drives the first bracket 103 to rotate around an axis via a horizontal first electric push rod 104, thereby enabling the mounting plate 106 to achieve a wide range of vertical height adjustment; the second cutting mechanism pushes the second bracket 107 via an inclined second electric push rod 108, causing the cutting blade assembly 109 to make a forward / backward angle adjustment, thereby performing a fine-tuning of the height. The first cutting mechanism 101 and the second cutting mechanism work together to form a spatial four-bar linkage mechanism, enabling the cutting blade assembly 109 to simultaneously perform large-scale adjustment and fine-tuning of vertical height, accurately adapting to the cutting needs of sponges of different thicknesses;

[0035] When the first electric push rod 104 extends / retracts to adjust the height of the mounting plate 106, the second push rod can simultaneously extend / retract to tighten the cutting blade assembly 109, forming a bidirectional prestressed structure. This design maintains the rigidity of the mechanism during height adjustment, thereby preventing the cutting blade assembly 109 from shifting during the cutting process.

[0036] The cutting blade assembly 109 moves independently with the second bracket 107, allowing the operator to directly observe the contact position between the blade and the sponge, thus enabling better observation of the operation, reducing operational errors and improving operational safety.

[0037] The electric push rod has a built-in mechanical self-locking and electromagnetic braking double safety, which can maintain the positioning state even after the power is cut off, preventing gravity slippage;

[0038] In one embodiment, all rotating connection points are equipped with sealed needle roller bearings and graphite lubricated bushings to reduce wear from frequent adjustments; the cutting reaction force is directly transmitted to the frame 100 through the bracket, so that the electric push rod only bears axial load, which improves its service life and significantly reduces maintenance needs caused by part deformation.

[0039] The cutting mechanism of this utility model's rail-mounted sponge flat cutter is equipped with a linkage structure of a first cutting mechanism 101 and a second cutting mechanism. The first electric push rod 104 drives the first bracket 103 to rotate laterally to adjust the overall height of the mounting plate 106, and the second electric push rod 108 drives the second bracket 107 to rotate at an angle to finely adjust the position of the cutting blade assembly 109. The design of the two electric push rods extending and retracting in opposite directions achieves coordinated and stable movement, thereby effectively solving the problems of inconvenient cutting blade height adjustment and reduced accuracy due to movement deviation in the prior art. This ensures the positioning accuracy and high flexibility of the cutting process, and improves the flat cutting accuracy and efficiency of polyurethane sponges of different thicknesses.

[0040] In this embodiment of the utility model, the frame 100 is symmetrically arranged on the left and right, and the frame 100 is provided with a rearwardly extending bracket mounting seat 110. The bracket mounting seat 110 is provided with a first bearing seat 111. The first bracket 103 includes a first vertical bracket 112 symmetrically arranged on the left and right and a first horizontal bracket 113 fixed between the first vertical brackets 112 symmetrically arranged on the left and right. The outer wall of the first vertical bracket 112 is fixed with a first rotating shaft that rotates and engages with the first bearing seat 111.

[0041] The symmetrically arranged first vertical support 112 and first horizontal support 113 form a portal frame. With the first rotating shaft rotating synchronously from left to right, the cutting reaction force is decomposed to the double-sided bearing seats, eliminating the deformation of the frame 100 caused by unilateral load.

[0042] The bracket mounting base 110 extends backward to form a cantilever support. Combined with the precise constraint of the first bearing housing 111 on the rotating shaft, the offset of the rotation axis of the first bracket 103 is reduced, thus reducing the swaying problem of the traditional single-sided support mechanism.

[0043] The integral first rotating shaft is directly fixed to the outer wall of the vertical support, ensuring the straightness and perpendicularity requirements of the thick sponge cutting.

[0044] In this embodiment of the utility model, the mounting plate 106 is detachably fixedly mounted on the lower end of the first vertical bracket 112, and the front end of the mounting plate 106 is fixedly mounted with a second bearing seat 115. The second bracket 107 includes two symmetrically arranged second vertical brackets 116 on the left and right and a second horizontal bracket 117 fixed between the two symmetrically arranged second vertical brackets 116. The outer wall of the second vertical bracket 116 is fixedly mounted with a second rotating shaft that rotates and engages with the second bearing seat 115.

[0045] The detachable connection between the mounting plate 106 and the first vertical bracket 112 allows for quick replacement of the cutting blade assembly 109;

[0046] The H-shaped frame formed by the left and right second vertical supports 116 and the second horizontal support 117, together with the integral second rotating shaft rotated in the double bearing seats, forms a closed force flow path, which converts the cutting torque into symmetrical bearing load.

[0047] The design of the second rotating shaft being directly fixed to the outer wall of the second vertical support 116 eliminates assembly gaps. Combined with the fully enclosed second bearing seat 115 for physical isolation of sponge debris, the cutting blade assembly 109 maintains its initial positioning accuracy under long-term high-frequency operating conditions. This structure enables the equipment to perform cutting stably without additional reinforcement mechanisms, significantly improving the processing qualification rate of irregularly shaped sponge products.

[0048] In this embodiment of the present invention, the mounting plate 106 is detachably fixed to the outer wall of the first vertical support 112. The inner front end of the mounting plate 106 is detachably fixed to a clamping mounting seat 119. The clamping mounting seat 119 has a clamping mounting groove 120 and an expansion joint 121 communicating with the clamping mounting groove 120. The rear end side wall of the clamping mounting seat 119 is fitted to the first vertical support 112. An electric push rod mounting seat 122 is fixedly installed in the clamping mounting groove 120. An electric push rod mounting hole 123 is opened on the electric push rod mounting seat 122. The second electric push rod 108 is fixedly installed in the electric push rod mounting hole 123.

[0049] The expansion joint 121 of the clamping mounting base 119 is designed to actively release the internal stress and thermal deformation of the assembly. Combined with the detachable connection interface, it completely eliminates the micro deformation caused by residual stress in traditional welded structures. At the same time, the expansion joint 121 can be locked with bolts, so that the electric push rod mounting base 122 can be quickly locked in the clamping mounting groove 120.

[0050] The clamping mounting groove 120 and the electric push rod mounting seat 122 form a rigid force chain to avoid angle drift caused by the deformation of the push rod housing, which would affect the cutting accuracy in the height direction. At the same time, the rear side wall of the clamping mounting seat 119 fits against the first vertical bracket 112, further enhancing the installation stability of the second electric push rod 108.

[0051] The modular clamping mounting slot 120 and the electric actuator mounting base 122 work together to support the replacement of the electric actuator or the angle reset in a short time.

[0052] In this embodiment of the present invention, the cutting blade assembly 109 includes a blade holder 124 detachably fixedly mounted on the lower end of the second vertical support 116. The second vertical support 116 has a T-shaped groove 125 along its length direction. The blade holder 124 has a blade holder mounting hole 126. A blade holder bolt is installed in the blade holder mounting hole 126. A blade holder nut that locks with the blade holder bolt is installed in the T-shaped groove 125. The blade holders 124 are symmetrically arranged on the left and right sides of the second vertical support 116, and a blade belt 128 is fixed between the symmetrical blade holders 124.

[0053] The symmetrically arranged tool holder 124 achieves bidirectional stepless adjustment through the T-shaped slide 125. Combined with the locking mechanism of the tool holder bolt, the parallelism of the two ends of the tool belt 128 can be adjusted to meet the cutting requirements of ultra-thin sponge and facilitate subsequent maintenance.

[0054] At the same time, it will reduce the scrap rate caused by loose blade holder and significantly improve the cutting yield of high-density sponge.

[0055] In this embodiment of the present invention, the frame 100 is provided with a vertical slide rail, and a vertical adjustment slider 130 is slidably provided on the vertical slide rail. A base plate component 131 is fixedly connected to the vertical adjustment slider 130. A base plate crossbeam 132 located below the base plate component 131 is fixedly provided on the frame 100. A screwing component 133 is installed on the base plate crossbeam 132. The screwing component 133 is screwed into the base plate crossbeam 132, and the upper end of the screwing component 133 passes through the base plate crossbeam 132 and rotates with the base plate component 131.

[0056] The screwing part 133 and the substrate beam 132 are precisely threaded together, and the vertical slide rail provides rigid constraint on the substrate part 131, so as to achieve fine adjustment of the cutting substrate height and accurately adapt to the cutting of sponges of different thicknesses.

[0057] In one embodiment, the rotational mating interface between the screwing component 133 and the base plate component 131 adopts a PTFE inlaid bearing. Combined with the pre-tightening self-locking characteristics of the screw connection structure, it maintains a high degree of repeatability in positioning accuracy after multiple lifting cycles, reducing the problem of cutting thickness drift caused by wear in traditional lifting mechanisms.

[0058] In this embodiment of the utility model, a chamfered portion 134 is provided at the junction of the upper end and the front end of the mounting plate 106;

[0059] Reduce interference between the mounting plate 106 and the first electric push rod 104.

[0060] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A cutting mechanism for a rail-mounted sponge flat cutter, characterized in that, Includes a frame (100), on which a first cutting mechanism (101) is provided, and on which a second cutting mechanism is provided; The first cutting mechanism (101) includes a first bracket (103) rotatably disposed at the rear end of the frame (100), a first electric push rod (104) arranged horizontally fixed at the front end of the frame (100), the working shaft of the first electric push rod (104) being rotatably connected to the middle part of the first bracket (103), and a mounting plate (106) being fixedly installed at the lower end of the first bracket (103). The second cutting mechanism (102) includes a second bracket (107) rotatably mounted on the front end of the mounting plate (106), and a second electric push rod (108) inclined upward is fixedly mounted on the rear end of the mounting plate (106). The working shaft of the second electric push rod (108) is rotatably connected to the upper end of the second bracket (107), and a cutting blade assembly (109) is fixedly mounted on the lower end of the second bracket (107). The extension and retraction directions of the first electric push rod (104) and the second electric push rod (108) are opposite.

2. The cutting mechanism of a track-type sponge flat cutter according to claim 1, characterized in that, The frame (100) is symmetrically arranged on the left and right. The frame (100) is provided with a rearward extending bracket mounting seat (110). The bracket mounting seat (110) is equipped with a first bearing seat (111). The first bracket (103) includes a first vertical bracket (112) symmetrically arranged on the left and right and a first horizontal bracket (113) fixed between the first vertical brackets (112) symmetrically arranged on the left and right. The outer wall of the first vertical bracket (112) is fixed with a first rotating shaft that rotates and engages with the first bearing seat (111).

3. The cutting mechanism of a track-type sponge flat cutter according to claim 2, characterized in that, The mounting plate (106) is detachably fixedly mounted on the lower end of the first vertical bracket (112). The front end of the mounting plate (106) is fixedly mounted with a second bearing seat (115). The second bracket (107) includes a second vertical bracket (116) arranged symmetrically on the left and right and a second horizontal bracket (117) fixed between the second vertical bracket (116) arranged symmetrically on the left and right. The outer wall of the second vertical bracket (116) is fixedly mounted with a second rotating shaft that rotates and engages with the second bearing seat (115).

4. The cutting mechanism of a track-type sponge flat cutter according to claim 3, characterized in that, The mounting plate (106) is detachably fixed to the outer wall of the first vertical bracket (112). The front inner side of the mounting plate (106) is detachably fixed to a clamping mounting seat (119). The clamping mounting seat (119) is provided with a clamping mounting groove (120) and an expansion joint (121) communicating with the clamping mounting groove (120). The rear side wall of the clamping mounting seat (119) is fitted to the first vertical bracket (112). An electric push rod mounting seat (122) is fixedly installed in the clamping mounting groove (120). An electric push rod mounting hole (123) is provided in the electric push rod mounting seat (122). The second electric push rod (108) is fixedly installed in the electric push rod mounting hole (123).

5. The cutting mechanism of a track-type sponge flat cutter according to claim 4, characterized in that, The cutting blade assembly (109) includes a blade holder (124) that is detachably fixed to the lower end of the second vertical support (116). The second vertical support (116) has a T-shaped groove (125) along its length. The blade holder (124) has a blade holder mounting hole (126). A blade holder bolt is installed in the blade holder mounting hole (126). A blade holder nut that locks with the blade holder bolt is installed in the T-shaped groove (125). The blade holder (124) is symmetrically arranged on the left and right sides of the second vertical support (116), and a blade belt (128) is fixed between the symmetrical blade holders (124).

6. The cutting mechanism of a rail-mounted sponge flat cutter according to any one of claims 1-5, characterized in that, The frame (100) is provided with a vertical slide rail, and a vertical adjustment slider (130) is slidably provided on the vertical slide rail. A base plate component (131) is fixedly connected to the vertical adjustment slider (130). A base plate crossbeam (132) located below the base plate component (131) is fixedly provided on the frame (100). A screwing component (133) is installed on the base plate crossbeam (132). The screwing component (133) is screwed into the base plate crossbeam (132), and the upper end of the screwing component (133) passes through the base plate crossbeam (132) and rotates with the base plate component (131).

7. The cutting mechanism of a track-type sponge flat cutter according to claim 6, characterized in that, The mounting plate (106) has a chamfered portion (134) at the junction of the upper end and the front end.

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