A plastic honeycomb core high frequency braiding machine

Abstract

The invention provides a plastic honeycomb core high-frequency braiding machine, belonging to the technical field of plastic honeycomb core processing equipment; the machine comprises a machine base, a control box, a high-frequency welding machine, a frame, a braiding forming mold and two material strip supply mechanisms; the braiding forming mold comprises a braiding lower mold and a melting and pressing upper mold, and the braiding lower mold comprises an X-axis transfer mechanism, two YZ-axis transfer mechanisms and a lower mold; the two material strip supply mechanisms alternately supply fixed-length material strips to be placed on the lower mold, and the two YZ-axis transfer mechanisms respectively drive the lower molds placed thereon to operate, so that the two lower molds perform asynchronous insertion and staggered movements to perform braiding operations on the material strips placed thereon one by one, and at the same time, the melting and pressing upper mold performs interval melting and pressing on two adjacent braided material strips, and with the assistance of the X-axis transfer mechanism to synchronously transfer the two lower molds, the melting and pressing positions of the material strips are staggered to form a honeycomb core structure, the production process is simple, the degree of automation is high, and the purpose of high production efficiency, low manufacturing cost and excellent product quality of the honeycomb core structure is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of plastic honeycomb core processing equipment, in particular to a plastic honeycomb core high-frequency braiding machine. Background Art

[0002] Honeycomb is a structure composed of hexagonal arrangements (such as Figure 1 As shown in the figure, one end of the honeycomb is a hexagonal opening, and the other end is the bottom of a closed hexagonal pyramid. In the field of applied materials, honeycomb materials are well-known for their excellent compression and bending resistance and ultra-light structural characteristics. From a mechanical point of view, the closed hexagonal equilateral honeycomb structure can obtain the maximum force with the least material compared to other structures, and when the honeycomb structure is subjected to vertical load, its bending stiffness is almost the same as that of solid materials of the same material and thickness, or even higher, but its weight is 70-90% lighter. Therefore, it is widely used in the field of applied materials.

[0003] The prior art plastic honeycomb core is prepared by molding, which is to heat press a single layer or several layers of stacked adhesive tape into a neatly shaped corrugated plate with a mold, and then use resin to stick it into a honeycomb blank at an appropriate position and harden the resin at an appropriate temperature and pressure, and finally cut the hardened honeycomb material along the vertical direction of the hole. Or the upper and lower templates and mandrels are matched and pressed, and many honeycomb grooves are engraved on the surface of the template to fix the mandrel; when pressing, the glass cloth is first placed on the template and the mandrel and hot-pressed into a corrugated blank, and then the adhesive is applied to the vertices of the pressed corrugated blank, and then the blanks coated with adhesive are stacked up so that the vertices of each two adjacent corrugations are in contact with each other, and it can be cut into the required length after the adhesive hardens. However, this type of existing plastic honeycomb core preparation method generally has the disadvantages of complicated production process, high manual participation, high labor intensity, poor product quality, and low production efficiency. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a high-frequency weaving machine for plastic honeycomb cores, which automatically straightens, cuts to a fixed length and loads the rolled material strips, and then automatically weaves and melts the stacked material strips alternately to form a honeycomb core structure, so that the production process of the honeycomb core structure is simple and highly automated, thereby achieving the production goals of high production efficiency, low manufacturing cost and excellent product quality in the production of the honeycomb core structure.

[0005] The invention provides the following technical solution: a plastic honeycomb core high-frequency weaving machine, comprising a machine base, a control box respectively arranged on both sides of the machine base, a high-frequency welding machine and a frame arranged on the machine base; it also includes a weaving molding mold and two material strip supply mechanisms.

[0006] Preferably, the weaving forming die includes a weaving lower die and a melting and pressing upper die matched with the weaving lower die, the two material strip supply mechanisms are respectively located on both sides of the weaving lower die and installed on the machine base; the weaving lower die and the melting and pressing upper die are respectively electrically connected to the two poles of the high-frequency welding machine, the weaving lower die is arranged on the machine base, and the melting and pressing upper die is arranged at the bottom of the top of the frame. This structural design weaves the material strips placed thereon one by one through the weaving lower die, and the partial bonding of the two adjacent material strips after weaving is achieved through the interval melting and pressing of the melting and pressing upper die.

[0007] Preferably, the weaving lower mold includes an X-axis transfer mechanism arranged on the machine base, two YZ-axis transfer mechanisms symmetrically arranged on the X-axis transfer mechanism and a lower mold respectively arranged on the two YZ-axis transfer mechanisms; the two material strip supply mechanisms alternately supply fixed-length material strips to be placed on the lower mold, and the two YZ-axis transfer mechanisms respectively drive the lower molds placed thereon to operate, so that the two lower molds perform asynchronous insertion and staggered movements to weave the material strips placed thereon one by one, and at the same time, the melting and pressing upper mold performs intermittent melting and pressing on two adjacent woven material strips, and with the assistance of the X-axis transfer mechanism to synchronously transfer the two lower molds, the melting and pressing positions of the material strips are staggered to form a honeycomb core structure.

[0008] Preferably, both lower molds include a lower mold base disposed on the YZ-axis transfer mechanism, a lower mold mounting plate disposed on the lower mold base, and a braiding fork movably disposed on the lower mold mounting plate; the front ends of both braiding forks are provided with evenly spaced fork heads, and the fork head of one braiding fork can be accommodated in the gap formed by two adjacent fork heads on the other braiding fork. The purpose of this structural design is that the two YZ-axis transfer mechanisms respectively drive the braiding forks placed thereon to move, so that the two braiding forks perform asynchronous interlocking and interlaced movements to achieve braiding operations on the material strips placed one by one on the braiding forks.

[0009] Preferably, the X-axis transfer mechanism is provided with a limit assembly, which includes a limit bracket provided on the X-axis transfer mechanism and a limit member movably provided on the limit bracket, and the limit member is mounted above the lower mold; the limit member includes symmetrically arranged material guide plates and at least one material spacer evenly arranged between the two material guide plates, and the two material guide plates are provided with evenly spaced avoidance grooves extending upward from the bottom end, and the fork head on the braiding fork can be inserted into the avoidance groove on the material guide plate at the corresponding position. This structural design has a limiting effect on the material strip placed on the lower mold, and plays an auxiliary role in facilitating the braiding operation of the material strip.

[0010] Preferably, the melting and pressing upper die includes an upper die support provided on the frame, an upper die lifting assembly provided on the upper die support, and an upper die group provided on the upper die lifting assembly; the upper die group includes an intermediate plate provided on the upper die lifting assembly, an upper die seat provided on the intermediate plate, and an upper die provided at the bottom end of the upper die seat, and the upper die is provided with at least two rows of melting and pressing protrusions evenly spaced apart; the melting and pressing protrusions can be correspondingly engaged with the upper end surface of the fork head through the lifting action of the upper die lifting assembly. The purpose of this structural design is to achieve the hot melting and pressing bonding operation of the two material strip areas superimposed on the upper end surface of the fork head.

[0011] Preferably, the upper die lifting assembly comprises a first mounting frame arranged on the upper die support, a first ball screw passing through the upper die support and rotatably arranged on the first mounting frame, and an upper die plate arranged at the output end of the first ball screw, the intermediate plate is fixed on the upper die plate; the upper die support and the upper die plate are respectively provided with matching guide pillars or guide sleeves. The purpose of this structural design is to realize the lifting or lowering operation of the upper die relative to the die.

[0012] Preferably, both sides of the upper mold lifting assembly are provided with inserting assemblies, which respectively include an inserting cylinder provided on the upper mold plate and an inserting sheet provided at the output end of the inserting cylinder; the two inserting cylinders are arranged in an inverted eight-shaped pattern, and respectively drive the inserting sheets thereon to insert the two ends of the material strip inward. The purpose of this structural design is to make the two ends of the material strip placed on the lower mold in a natural drooping state, so as to facilitate the weaving operation of the lower mold on it.

[0013] Preferably, the two material supply mechanisms each include a material reel roller, a material guide rack, a material straightening assembly, and a cutting and feeding assembly. The purpose of this structural design is to automatically straighten and cut the rolled material tape to a fixed length, and feed the material to the lower mold for weaving operation.

[0014] Preferably, the material strip straightening assembly comprises a straightening mounting frame arranged on the machine base, a straightening linear module and a material head gripper cylinder arranged on the straightening mounting frame, and a straightening gripper cylinder arranged on the output end of the straightening linear module; the straightening linear module is arranged in parallel with the lower mold, and the material head gripper cylinder and the straightening gripper cylinder are arranged horizontally, and the opening directions are consistent. The purpose of this structural design is to straighten the packaged material strip to facilitate the subsequent weaving operation of the material strip.

[0015] Preferably, the cutting and feeding assembly includes two feeding gripper cylinders arranged in parallel on the same side of the straightening linear module, feeding cylinders driving the feeding gripper cylinders up and down respectively, and a driving member driving the two feeding cylinders to synchronously move horizontally, and a shearing cylinder arranged on the feeding cylinder; the feeding gripper cylinder and the shearing cylinder are arranged horizontally, and their opening directions are consistent; the straightening gripper cylinder and the opening end of the feeding gripper cylinder are arranged opposite to each other. The purpose of this structural design is to cut the straightened material strip and convey it to the lower mold for material strip weaving operation.

[0016] Preferably, the X-axis transfer mechanism comprises an X-axis cylinder and an X-axis slide rail provided on the machine base and an X-axis transfer plate sliding along the X-axis slide rail, and the output end of the X-axis cylinder is pivotally connected to the X-axis transfer plate to drive the X-axis transfer plate to slide back and forth along the X-axis slide rail. This structural design enables the two lower molds to be transferred synchronously to achieve the purpose of staggering the rear melting and pressing position relative to the front melting and pressing position.

[0017] Preferably, the YZ-axis transfer mechanism comprises a Y-axis sliding assembly arranged on the X-axis transfer mechanism and a Z-axis lifting assembly arranged on the Y-axis sliding assembly, and the lower mold is movably arranged on the Z-axis lifting assembly. This structural design enables the lower mold to perform a composite movement in the Y-axis direction and the Z-axis direction, thereby realizing asynchronous insertion and staggered movement of the two lower molds.

[0018] Preferably, the Y-axis sliding assembly includes a Y-axis cylinder and a Y-axis slide rail provided on the X-axis transfer plate and a lower mold mounting frame sliding along the Y-axis slide rail. The output end of the Y-axis cylinder is pivotally connected to the lower mold mounting frame to drive the lower mold mounting frame to slide reciprocatingly along the Y-axis slide rail.

[0019] Preferably, the Z-axis lifting assembly includes a Z-axis slide rail and a second mounting frame provided on the lower mold mounting frame, and a second ball screw passing through and rotating on the second mounting frame; the lower mold slides along the Z-axis slide rail, and the lower mold is provided at the output end of the second ball screw, and the forward and reverse rotation of the second ball screw enables the lower mold to be lifted and lowered relative to the lower mold mounting frame.

[0020] The beneficial effects of the present invention are as follows: compared with the existing plastic honeycomb core preparation equipment, the present invention has the following advantages:

[0021] 1. A structure arrangement is adopted which includes a matching weaving lower die and a melting and pressing upper die, and two material strip supply mechanisms are respectively located on both sides of the weaving lower die, and the weaving lower die and the melting and pressing upper die are respectively electrically connected to the two poles of the high-frequency welding machine, so that the two material strip supply mechanisms can automatically straighten, cut to a fixed length and feed the rolled material strips alternately, and then the weaving lower die and the melting and pressing upper die automatically weave and melt-press the material strips stacked one by one on the weaving lower die to form a honeycomb core structure, so that the production of the honeycomb core structure can fully realize an automated production process with high production efficiency.

[0022] 2. The two braiding forks are driven by the YZ axis transfer mechanism to realize the asynchronous insertion and staggered movement of the two lower molds, so that the material strips placed on the lower molds one by one are braided, and the melting and pressing protrusions can be correspondingly engaged on the two superimposed material strips on the upper end surface of the fork head through the lifting action of the upper mold lifting assembly, so as to realize the interval melting and pressing bonding of the two adjacent braided material strips; and the X axis transfer mechanism synchronously transfers the two lower molds to stagger the melting and pressing positions to form a honeycomb core structure. Compared with the existing plastic honeycomb core structure manufacturing tooling, this braiding molding mold has the characteristics of simple production process, low manufacturing cost, and high product quality.

[0023] 3. The limiting member including the material guide plate and the material spacer is used, wherein the two material guide plates are provided with evenly spaced avoidance grooves extending upward from the bottom, and the fork head on the braiding fork can be inserted into the avoidance groove on the material guide plate at the corresponding position, so as to isolate the several material strips placed on the braiding fork and assist the lower mold in the braiding operation, prevent the crossover of different material strips during the braiding process, and improve the braiding processing quality and processing efficiency. In addition, the two material inserting pieces are arranged in an inverted eight-shaped shape, so that the two ends of the material strip placed on the lower mold are in a naturally drooping state, which is convenient for the lower mold to braid it. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the front view of the plastic honeycomb core structure;

[0025] Figure 2 This is a schematic diagram of the three-dimensional structure of the high-frequency braiding machine for plastic honeycomb cores of the present invention;

[0026] Figure 3 It is a schematic diagram of the assembly structure of the weaving forming die and the material strip supply mechanism of the plastic honeycomb core high-frequency weaving machine of the present invention;

[0027] Figure 4 This is a schematic diagram of the braiding lower mold structure of the high-frequency braiding machine for the plastic honeycomb core of the present invention;

[0028] Figure 5This is a schematic diagram of the lower mold structure of the high-frequency braiding machine for the plastic honeycomb core of the present invention;

[0029] Figure 6 for Figure 5 A partial enlarged schematic diagram marked with A;

[0030] Figure 7 This is a schematic diagram of the structure of the limiting assembly of the high-frequency braiding machine for the plastic honeycomb core of the present invention;

[0031] Figure 8 for Figure 7 A partial enlarged schematic diagram marked with B;

[0032] Fig. 9 This is a schematic diagram of the structure of the upper mold of the high-frequency braiding machine for the plastic honeycomb core of the present invention;

[0033] Fig.10 This is a structural schematic diagram of another viewing angle of the upper mold of the high-frequency braiding machine for the plastic honeycomb core of the present invention;

[0034] Fig.11 This is a schematic structural diagram of the material strip supply mechanism of the high-frequency braiding machine for the plastic honeycomb core of the present invention;

[0035] Fig.12 It is a schematic diagram of the assembly structure of the strip straightening component and the cutting and feeding component of the plastic honeycomb core high-frequency braiding machine of the present invention;

[0036] Fig.13 This is a schematic diagram of the structure of the X-axis transplanting mechanism of the high-frequency braiding machine for plastic honeycomb cores of the present invention;

[0037] Fig.14 This is a schematic diagram of the structure of the YZ axis transplanting mechanism of the high frequency braiding machine for plastic honeycomb cores of the present invention;

[0038] Fig.15 A simplified flow chart of the weaving working principle of the weaving forming mold of the high-frequency weaving machine for the plastic honeycomb core of the present invention;

[0039] Description of the accompanying drawings: 10-base, 11-frame, 20-control box, 30-high frequency welding machine, 40-weaving molding mold, 41-weaving lower mold, 411-X axis transfer mechanism, 4111-X axial cylinder, 4112-X axial slide rail, 4113-X axis transfer plate, 412-YZ axis transfer mechanism, 4121-Y axis sliding assembly, 41211-Y axial cylinder, 41212-Y axial slide rail, 41213-lower die mounting frame, 4122-Z-axis lifting assembly, 41221-Z-axis slide rail, 41222-second mounting frame, 41223-second ball screw, 413-lower die, 4131-lower die seat, 4132-lower die mounting plate, 4133-weaving fork, 41331-fork head, 4133a-weaving fork 1, 4133b-weaving fork 2, 42-melting upper die, 421-upper die bracket, 422-upper die lifting assembly, 4221-first mounting frame, 4222-first ball screw, 4223-upper die plate, 423-upper die set, 4231-middle plate, 4232-upper die seat, 4233-upper die, 42331-melting convex block, 424-insertion assembly, 4241-insertion cylinder, 4242-insertion sheet, 43-limiting assembly, 431-limiting bracket, 432-limiting piece, 4321- Material guide plate, 43211-avoidance groove, 4322-material partition rack, 50-material strip supply mechanism, 51-material strip roller, 52-material guide rack, 53-material strip straightening assembly, 531-straightening mounting frame, 532-straightening linear module, 533-material head gripper cylinder, 534-straightening gripper cylinder, 54-cutting and feeding assembly, 541-feeding gripper cylinder, 542-feeding cylinder, 543-driving part, 544-shearing cylinder. DETAILED DESCRIPTION

[0040] In order to make the purpose of the invention, the technical scheme and the technical effect of the present invention more clear, the present invention is further described below in conjunction with specific implementation methods. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] Reference Figure 2 and Figure 3 As shown, a plastic honeycomb core high-frequency braiding machine comprises a machine base 10, a control box 20 and a high-frequency welding machine 30 respectively arranged on both sides of the machine base, and a frame 11 arranged on the machine base 10. In this embodiment, the control box 20 and the high-frequency welding machine 30 are respectively arranged at the front and rear ends of the machine base 10, which play a safety role and facilitate the control during the production process. In order to intuitively observe the operation of the high-frequency braiding machine and consider safety, an acrylic box with an opening and closing door structure can be added to the frame 11, and the opening and closing door structure is arranged on the left and right sides of the machine base 10.

[0042] Furthermore, the high-frequency braiding machine also includes a braiding forming mold 40 and two material strip supply mechanisms 50. Specifically, the braiding forming mold 40 includes a braiding lower mold 41 and a melting and pressing upper mold 42 matched with the braiding lower mold. In this embodiment, the two material strip supply mechanisms 50 are respectively located on both sides of the braiding lower mold 41 and are installed on the machine base 10; wherein the braiding lower mold 41 and the melting and pressing upper mold 42 are respectively electrically connected to the two poles of the high-frequency welding machine 30, the braiding lower mold 41 is arranged on the machine base 10, and the melting and pressing upper mold 42 is arranged at the top and bottom of the frame 11. The braiding material targeted by the present invention is a plastic material of a material strip structure, wherein the braiding lower mold 41 can adjust its position in a three-dimensional space, and the melting and pressing upper mold 42 can only adjust its position in the vertical direction, and the braiding lower mold 41 is used to perform a braiding operation on the material strips placed thereon one by one, and the local bonding operation of the two adjacent material strips after braiding is realized by the interval melting and pressing of the melting and pressing upper mold 42.

[0043] Reference Figure 4 As shown, the braiding lower die 41 comprises an X-axis transfer mechanism 411 arranged on the machine base 10, two YZ-axis transfer mechanisms 412 symmetrically arranged on the X-axis transfer mechanism, and lower dies 413 respectively arranged on the two YZ-axis transfer mechanisms. The two material strip supply mechanisms 50 alternately supply fixed-length material strips to be placed on the lower die 413, and the two YZ-axis transfer mechanisms 412 respectively drive the lower dies 413 placed thereon to operate, so that the two lower dies 413 perform asynchronous interpolation and staggered motion to perform braiding operations on the material strips placed thereon one by one, and at the same time, the melting and pressing upper die 42 performs interval melting and pressing on two adjacent braided material strips, and with the assistance of the X-axis transfer mechanism 411 to synchronously transfer the two lower dies 413, the melting and pressing positions of the material strips are staggered to form a honeycomb core structure, so that the production of the honeycomb core structure is fully automated, and the production efficiency is high.

[0044] Reference Figure 5 As shown, both lower molds 413 include a lower mold base 4131 disposed on the YZ-axis transfer mechanism 412, a lower mold mounting plate 4132 disposed on the lower mold base, and a braiding fork 4133 movably disposed on the lower mold mounting plate. In this embodiment, the two braiding forks 4133 are arranged relative to each other. In order to facilitate the adjustment of the position between the two braiding forks 4133, in specific practice, a linear hole can be opened in the lower mold mounting plate 4132, and a fastener can be passed through the linear hole to achieve the braiding fork 4133 being adjustable and fixedly mounted on the lower mold mounting plate 4132.

[0045] Reference Figure 4 and Figure 6As shown, the front ends of the two braiding forks 4133 are both provided with evenly spaced fork heads 41331, and the fork head of one braiding fork 4133 can be accommodated in the gap formed by the two adjacent fork heads 41331 on the other braiding fork 4133. The purpose of this structural design is that the two YZ-axis transfer mechanisms 412 respectively drive the braiding forks 4133 placed thereon to move, so that the two braiding forks 4133 perform asynchronous insertion and staggered movements to achieve braiding operations on the material strips placed on the braiding forks 4133 one by one. In the specific production process, in order to avoid the fork head 41331 being affected by heat conduction during melting and pressing and affecting the material strip, the braiding fork 4133 is generally made of heat-insulating material. In the present invention, the two YZ-axis transfer mechanisms 412 respectively drive the weaving forks 4133 placed thereon to move, so that the two weaving forks 4133 perform asynchronous insertion and staggered movements to realize weaving operations on the material strips placed on the weaving forks 4133 one by one, and at the same time, the melting and pressing upper mold 42 performs intermittent melting and pressing on the two adjacent weaving material strips, and the X-axis transfer mechanism 411 synchronously transfers the two weaving forks 4133 to realize the staggered rear melting and pressing position compared to the front melting and pressing position to form a honeycomb core structure; compared with the existing manufacturing tooling for plastic honeycomb core structures, the weaving molding mold has the characteristics of simple production process, low manufacturing cost, and high product quality.

[0046] Reference Figure 7 and Figure 8As shown, a limit assembly 43 is provided on the X-axis transfer mechanism 411, and the limit assembly includes a limit bracket 431 arranged on the X-axis transfer mechanism 411 and a limit member 432 movably arranged on the limit bracket, and the limit member is mounted above the lower mold 413; wherein, in order to facilitate adjustment of the appropriate distance between the limit member 432 and the lower mold 413 according to different production needs, a strip hole is opened on the limit bracket 431 to achieve the adjustment of the distance between the limit member 432 and the lower mold 413. In the present invention, the position-limiting member 432 includes symmetrically arranged material guide plates 4321 and at least one material spacer 4322 evenly arranged between the two material guide plates. The two material guide plates 4321 are provided with evenly spaced avoidance grooves 43211 extending upward from the bottom ends. The fork head 41331 on the braiding fork 4133 can be inserted into the avoidance grooves 43211 on the material guide plates 4321 at corresponding positions. This structural design has a position-limiting effect on the material strip placed on the lower mold 413, and plays an auxiliary role in facilitating the braiding operation of the material strip. In the present embodiment, the number of the material separator 4322 is one, and the material separator 4322 divides the two material guide plates 4321 into two groups, which is convenient for placing the material tape, so that the weaving forming mold 40 has a one-out-two production mode; in addition, the fork head 41331 on the weaving fork 4133 can be inserted into the avoidance groove 43211 on the material guide plate 4321 at the corresponding position, wherein the number of the avoidance groove 43211 is one more than the fork head 41331, and its purpose is to realize the structural requirement that the melting and pressing position can be displaced.

[0047] Reference Fig. 9 and Fig.10 As shown, the melting and pressing upper mold 42 includes an upper mold support 421 provided on the frame 11, an upper mold lifting assembly 422 provided on the upper mold support, and an upper mold group 423 provided on the upper mold lifting assembly; the upper mold group 423 includes an intermediate plate 4231 provided on the upper mold lifting assembly 422, an upper mold base 4232 provided on the intermediate plate, and an upper mold 4233 provided at the bottom end of the upper mold base. In the present invention, at least two rows of melting and pressing protrusions 42331 evenly spaced are provided on the upper mold 4233; the specific number of rows is consistent with the number of groups of the material guide plate 4321 divided by the material spacer 4322. In this embodiment, the number of the melting and pressing protrusions 42331 is two rows. The melting and pressing protrusions 42331 can be correspondingly engaged with the upper end surface of the fork head 41331 through the lifting action of the upper mold lifting assembly 422, thereby realizing the hot melting and pressing bonding operation of the two material strip areas stacked on the upper end surface of the fork head 41331.

[0048] Furthermore, the upper mold lifting assembly 422 includes a first mounting frame 4221 disposed on the upper mold bracket 421, a first ball screw 4222 passing through the upper mold bracket 421 and rotatably disposed on the first mounting frame 4221, and an upper mold plate 4223 disposed at the output end of the first ball screw, and the intermediate plate 4231 is fixedly disposed on the upper mold plate 4223. In this embodiment, the first ball screw 4222 realizes forward and reverse rotation under the action of the motor, so that the upper mold plate 4223 performs lifting and lowering movements, and realizes the lifting or lowering operation of the upper mold 4233 relative to the lower mold 413, so as to coordinate the hot-melt pressing and bonding operation after the material strip is woven. In addition, in order to ensure that the melting and pressing protrusion 42331 acts on the position of the weaving fork 4133 with high accuracy and improve the stability of the honeycomb core structure, the consistency of the melting and pressing position is ensured by respectively providing matching guide columns or guide sleeves on the upper mold bracket 421 and the upper mold plate 4223.

[0049] Furthermore, both sides of the upper mold lifting assembly 422 are provided with an insertion assembly 424, which includes an insertion cylinder 4241 provided on the upper mold plate 4223 and an insertion sheet 4242 provided at the output end of the insertion cylinder. During the production process, the two ends of the material belt are placed on it due to the obstruction of the limit bracket 431, so that during the downward movement of the weaving fork 4133, the limit bracket 431 holds up the material belt and it cannot move downward with the weaving fork 4133 to affect the weaving operation. In this embodiment, the two insertion cylinders 4241 are arranged in an inverted eight shape, and respectively drive the insertion sheets 4242 thereon to insert the two ends of the material belt inward. The purpose of this structural design is to make the two ends of the material belt placed on the lower mold 413 in a natural drooping state, which is convenient for the weaving operation of the lower mold 413.

[0050] See also Fig.11 As shown, the two material supply mechanisms 50 each include a material roller 51, a guide rack 52, a material straightening assembly 53, and a cutting and feeding assembly 54. In the present invention, the material is pulled by the material straightening assembly 53 and guided by the guide rack 52, so that the material in a straightened state is aligned with the lower mold 413, and then cut and transferred by the cutting and feeding assembly 54, so as to realize the automated operation of straightening the packaged material, cutting it to a fixed length, and feeding it to the lower mold 413 for weaving.

[0051] See also Fig.11 and Fig.12As shown, the material strip straightening assembly 53 includes a straightening mounting frame 531 provided on the machine base 10, a straightening linear module 532 and a material head gripper cylinder 533 provided on the straightening mounting frame, and a straightening gripper cylinder 534 provided on the output end of the straightening linear module 532; specifically, the straightening linear module 532 is arranged in parallel with the lower mold 413, and the material head gripper cylinder 533 and the straightening gripper cylinder 534 are arranged horizontally, and the opening directions are consistent. In this embodiment, the straightening gripper cylinder 534 clamps the material head of the material strip, and after being straightened to a predetermined length under the traction of the straightening linear module 532, the material head gripper cylinder 533 clamps the material strip, thereby facilitating the cutting and feeding operations of the cutting and feeding assembly 54, and facilitating the subsequent weaving operations of the material strip.

[0052] Furthermore, the cutting and feeding assembly 54 includes two feeding gripper cylinders 541 arranged in parallel on the same side of the straightening linear module 532, a feeding cylinder 542 that drives the feeding gripper cylinder up and down respectively, a driving member 543 that drives the two feeding cylinders to be synchronously horizontally moved, and a shearing cylinder 544 arranged on the feeding cylinder 542; specifically, the feeding gripper cylinder 541 and the shearing cylinder 544 are horizontally arranged, and their opening directions are consistent; the straightening gripper cylinder 534 and the opening end of the feeding gripper cylinder 541 are arranged opposite to each other. During the specific operation, the two feeding gripper cylinders 541 clamp the straightened material strip, and then the shearing cylinder 544 shears the material strip between the one of the feeding gripper cylinders 541 and the material head gripper cylinder 533, and then the driving member 543 and the feeding cylinder 542 work together to carry the clamped material strip at both ends to the linear groove formed by the guide plate 4321 and the material spacer 4322, so as to cut the straightened material strip and deliver it to the lower mold 413 for weaving the material strip. It should be noted here that the driving member 543 can adopt two parallel linear modules, and realize the synchronous transfer of the two feeding gripper cylinders 541 through the transmission method of motor, belt, etc., so as to realize the automatic feeding operation of the cut straight material strip.

[0053] See also Fig.13 The X-axis transfer mechanism 411 includes an X-axis cylinder 4111 and an X-axis slide rail 4112 arranged on the machine base 10 and an X-axis transfer plate 4113 sliding along the X-axis slide rail. The output end of the X-axis cylinder 4111 is pivotally connected to the X-axis transfer plate 4112 to drive the X-axis transfer plate 4113 to slide back and forth along the X-axis slide rail 4112, so that the two lower molds 413 are synchronously transferred to achieve the purpose of staggering the rear melting and pressing position compared to the front melting and pressing position.

[0054] See also Fig.14The YZ-axis transfer mechanism 412 includes a Y-axis sliding component 4121 arranged on the X-axis transfer mechanism 411 and a Z-axis lifting component 4122 arranged on the Y-axis sliding component. The lower mold 413 is movably arranged on the Z-axis lifting component 4122, so that the lower mold 413 can perform a compound movement in the Y-axis direction and the Z-axis direction, thereby realizing asynchronous insertion and staggered movement of the two lower molds 413.

[0055] Furthermore, the Y-axis sliding assembly 4121 includes a Y-axial cylinder 41211 and a Y-axial slide rail 41212 arranged on the X-axis transfer plate 4113 and a lower mold mounting frame 41213 sliding along the Y-axial slide rail. The output end of the Y-axial cylinder 41211 is pivotally connected to the lower mold mounting frame 41213, driving the lower mold mounting frame 41213 to slide reciprocatingly along the Y-axial slide rail 41211, thereby realizing the mutual insertion or separation of the fork heads 41331 on the two weaving forks 4133.

[0056] Furthermore, the Z-axis lifting assembly 4122 includes a Z-axis slide rail 41221 and a second mounting frame 41222 provided on the lower mold mounting frame 41213, and a second ball screw 41223 passing through and rotating on the second mounting frame; the lower mold 413 slides along the Z-axis slide rail 41221, and the lower mold 413 is provided at the output end of the second ball screw 41223, and the forward and reverse rotation of the second ball screw 41223 enables the lower mold 413 to be lifted and lowered relative to the lower mold mounting frame 41213, thereby realizing the up and down staggered movement of the fork heads 41331 on the two weaving forks 4133.

[0057] The working principle of the automatic knitting of the present invention is as follows: Fig.15 As shown, the analysis is as follows:

[0058] STEP 1: Initially, the melting and pressing upper mold 42 and the braiding lower mold 41 are in a separated state, the braiding fork 1 4133a is above the braiding fork 2 4133b and is in a staggered state, and the material strip 1 of a fixed length and a straight state is automatically placed on the upper end of the braiding fork 1 4133a through the material strip supply mechanism 50;

[0059] STEP 2: The braiding fork 1 4133a descends along the Z axis, while the braiding fork 2 4133b retreats along the Y axis, ascends along the Z axis, and then advances along the Y axis. At this time, the braiding fork 2 4133b is above the braiding fork 1 4133a and is in a staggered state, and the straight-line material strip 1 is between the braiding fork 2 4133b and the braiding fork 1 4133a;

[0060] STEP 3: The braiding fork 1 4133a is raised along the Z axis, so that the fork head 41331 of the braiding fork 2 4133b and the braiding fork 1 4133a are mutually inserted, and at this time, the straight-line material strip 1 presents a wavy structure; then, the fixed-length and straight-line material strip 2 is automatically placed on the braiding fork 1 4133a through the material strip supply mechanism 50, and at this time, the wavy-structured material strip 1 and the straight-line material strip 2 are partially contacted and overlapped, and then the melting and pressing protrusion 42331 moves downward along the Z axis, and the partially contacted and overlapped areas of the material strip 1 and the material strip 2 are melted and pressed and bonded by the high-frequency principle;

[0061] STEP4: Through the synchronous action of the two Y-axis sliding components 4121, the braiding fork 1 4133a, the braiding fork 2 4133b and the melt-pressed material belts 1 and 2 in the STEP3 state are synchronously completely separated from the limiting member 432, and then the X-axis transplanting mechanism 411 is used to move the entirety to the right by one position. Since the position of the melt-pressed protrusion 42331 remains unchanged, the position where the melt-pressed protrusion 42331 is melted on the material belt 2 is dislocated. Through the synchronous action of the two Y-axis sliding components 4121 in opposite movements, the braiding fork 1 4133a, the braiding fork 2 4133b and the melt-pressed material belts 1 and 2 are synchronously and correspondingly entered into the avoidance groove 43211 of the limiting member 432. At this time, the braiding fork 2 4133b is above the braiding fork 1 4133a and is in a staggered state.

[0062] STEP 5: The material strip three in a straight state is placed on the braiding fork two 4133b through the material strip supply mechanism 50, and the material strip three in a straight state overlaps a partial area of ​​the material strip two in a wavy structure state;

[0063] STEP 6: The melting and pressing bump 42331 moves downward along the Z axis, and melts and presses the area where the material strip 3 and the material strip 2 are partially in contact and overlapped with each other through the high frequency principle;

[0064] STEP 7: The braiding fork 1 4133a retreats along the Y axis, rises along the Z axis, and then moves forward along the Y axis to be inserted into the fork head 41331 of the braiding fork 2 4133b;

[0065] STEP8: The weaving fork 2 4133b descends along the Z axis, so that the straight-state material strip 3 presents a wavy structure; subsequently, the straight-state material strip 4 is placed on the weaving fork 1 4133a through the material strip supply mechanism 50, and the process from STEP1 to STEP8 is repeated, thereby forming a honeycomb core structure.

[0066] The above content is a further detailed description of the present invention in combination with specific preferred implementation methods, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, without departing from the concept of the present invention, its architecture can be flexible and can derive a series of products. Just making a few simple deductions or substitutions should be regarded as belonging to the scope of patent protection of the present invention determined by the submitted claims.

Claims

1. A plastic honeycomb core high-frequency braiding machine, comprising a machine base, a control box and a high-frequency welding machine respectively arranged on both sides of the machine base, and a frame arranged on the machine base; characterized in that: It also includes a weaving forming die and two material strip feeding mechanisms; the weaving forming die includes a weaving lower die and a melting and pressing upper die matched with the weaving lower die, and the two material strip feeding mechanisms are respectively located on both sides of the weaving lower die and installed on the machine base; the weaving lower die and the melting and pressing upper die are respectively electrically connected to the two poles of the high-frequency welding machine, the weaving lower die is arranged on the machine base, and the melting and pressing upper die is arranged at the bottom end of the top of the frame; The braiding lower die comprises an X-axis transfer mechanism arranged on the machine base, two YZ-axis transfer mechanisms symmetrically arranged on the X-axis transfer mechanism, and lower dies respectively arranged on the two YZ-axis transfer mechanisms; the two material strip supply mechanisms alternately supply fixed-length material strips to be placed on the lower die, and the two YZ-axis transfer mechanisms respectively drive the lower dies placed thereon to operate, so that the two lower dies perform asynchronous interpolation and staggered motions to perform braiding operations on the material strips placed thereon one by one, and at the same time, the melting and pressing upper die performs interval melting and pressing on two adjacent braided material strips, and with the assistance of the X-axis transfer mechanism to synchronously transfer the two lower dies, the melting and pressing positions of the material strips are staggered to form a honeycomb core structure; The two material strip feeding mechanisms both include a material strip reel roller, a material guide frame, a material strip straightening assembly and a cutting and feeding assembly; the material strip straightening assembly includes a straightening mounting frame arranged on the machine base, a straightening linear module and a material head gripper cylinder arranged on the straightening mounting frame, and a straightening gripper cylinder arranged on the output end of the straightening linear module; the straightening linear module is arranged in parallel with the lower mold, and the material head gripper cylinder and the straightening gripper cylinder are arranged horizontally, and the opening directions are consistent; The cutting and feeding assembly comprises two feeding gripper cylinders arranged in parallel on the same side of the straightening linear module, feeding cylinders driving the feeding gripper cylinders up and down respectively, a driving member driving the two feeding cylinders to be synchronously horizontally transferred, and a shearing cylinder arranged on the feeding cylinder; the feeding gripper cylinder and the shearing cylinder are arranged horizontally, and their opening directions are consistent; the straightening gripper cylinder and the opening end of the feeding gripper cylinder are arranged opposite to each other; The two lower molds both include a lower mold base disposed on the YZ-axis transfer mechanism, a lower mold mounting plate disposed on the lower mold base, and a braiding fork movably disposed on the lower mold mounting plate; the front ends of the two braiding forks are both provided with evenly spaced fork heads, and the fork head of one of the braiding forks can be accommodated in the gap formed by two adjacent fork heads on the other braiding fork; The melting and pressing upper mold includes an upper mold support arranged on the frame, an upper mold lifting component arranged on the upper mold support and an upper mold group arranged on the upper mold lifting component; the upper mold group includes an intermediate plate arranged on the upper mold lifting component, an upper mold base arranged on the intermediate plate and an upper mold arranged at the bottom end of the upper mold base, and the upper mold is provided with at least two rows of melting and pressing protrusions that are evenly spaced; the melting and pressing protrusions can be correspondingly engaged with the upper end surface of the fork head through the lifting action of the upper mold lifting component.

2. The high-frequency braiding machine for plastic honeycomb core according to claim 1, characterized in that: A limit assembly is provided on the X-axis transfer mechanism, and the limit assembly includes a limit bracket arranged on the X-axis transfer mechanism and a limit member movably arranged on the limit bracket, and the limit member is mounted above the lower mold; the limit member includes symmetrically arranged material guide plates and at least one material spacing frame evenly arranged between the two material guide plates, and the two material guide plates are provided with evenly spaced avoidance grooves extending upward from the bottom ends, and the fork head on the weaving fork can be inserted into the avoidance groove on the material guide plate at the corresponding position.

3. The high-frequency braiding machine for plastic honeycomb core according to claim 1, characterized in that: The upper mold lifting assembly includes a first mounting frame arranged on the upper mold bracket, a first ball screw that passes through the upper mold bracket and is rotatably arranged on the first mounting frame, and an upper mold plate arranged at the output end of the first ball screw, and the intermediate plate is fixed on the upper mold plate; the upper mold bracket and the upper mold plate are respectively provided with matching guide columns or guide sleeves.

4. The high-frequency braiding machine for plastic honeycomb core according to claim 3, characterized in that: Insertion assemblies are respectively provided on both sides of the upper mold lifting assembly, and the insertion assemblies respectively include an insertion cylinder arranged on the upper mold plate and an insertion sheet arranged at the output end of the insertion cylinder; the two insertion cylinders are arranged in an inverted eight shape, and respectively drive the insertion sheets thereon to insert the two ends of the material strip inward.

5. The high-frequency braiding machine for plastic honeycomb core according to claim 1, characterized in that: The X-axis transfer mechanism includes an X-axis cylinder and an X-axis slide rail arranged on the machine base and an X-axis transfer plate sliding along the X-axis slide rail. The output end of the X-axis cylinder is pivotally connected to the X-axis transfer plate to drive the X-axis transfer plate to slide back and forth along the X-axis slide rail.

6. The high-frequency braiding machine for plastic honeycomb core according to claim 5, characterized in that: The YZ-axis transfer mechanism comprises a Y-axis sliding assembly arranged on the X-axis transfer mechanism and a Z-axis lifting assembly arranged on the Y-axis sliding assembly, and the lower mold is movably arranged on the Z-axis lifting assembly; The Y-axis sliding assembly includes a Y-axis cylinder and a Y-axis slide rail arranged on the X-axis transfer plate and a lower mold mounting frame sliding along the Y-axis slide rail. The output end of the Y-axis cylinder is pivotally connected to the lower mold mounting frame to drive the lower mold mounting frame to slide reciprocatingly along the Y-axis slide rail.

7. The high-frequency braiding machine for plastic honeycomb core according to claim 6, characterized in that: The Z-axis lifting assembly includes a Z-axis slide rail and a second mounting frame arranged on the lower mold mounting frame, and a second ball screw passing through and rotating on the second mounting frame; the lower mold slides along the Z-axis slide rail, and the lower mold is arranged at the output end of the second ball screw, and the forward and reverse rotation of the second ball screw enables the lower mold to be lifted and lowered relative to the lower mold mounting frame.

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