Automatic cutting device for reed material strap

Abstract

The invention relates to the technical field of conductive reed processing, and particularly discloses an automatic cutting device for a reed material strap, the reed material strap is provided with a base material and a plurality of pre-cut reeds which are arranged in parallel in the lengthwise direction of the base material, and a plurality of cutting separation positions are sequentially preset on the reed material strap in the lengthwise direction; the automatic cutting device is provided with a feeding mechanism and a cutting mechanism which are sequentially arranged in the lengthwise conveying direction of the reed material belt. The reed material belt is installed in a pushing channel of the feeding mechanism in a penetrating mode, and the feeding mechanism sequentially pushes the reed material belt to move forwards in the reciprocating motion process and feeds back a signal to the control cabinet. And the cutting mechanism receives an instruction of the control cabinet, is linked with the feeding mechanism according to a signal corresponding to each cutting separation position, and is used for separating and cutting the reed material belt pushed to the cutting position at the current cutting separation position. The strip reed cutting device is designed according to the particularity of strip reeds, automatic operation is formed, and the strip reed cutting device has the technical advantages of being high in cutting efficiency and cutting precision, capable of saving labor and low in machining cost.

Description

Technical Field

[0001] The invention relates to the technical field of conductive spring processing, in particular to an automatic cutting device for a spring strip. Background Art

[0002] In the production of batch power connectors or relays, many conductive reeds are used, which is particularly prominent in the production of batch power connectors.

[0003] Conductive reeds used in products (i.e. power connectors or relays) need to be electroplated. In order to ensure the quality of electroplating, it is not advisable to electroplate the base material of the formed reed first and then cut the finished reed. Instead, the formed reed is stamped on the base material first and then the reed with the base material is electroplated. Therefore, this involves the process of cutting and separating the electroplated reed at a predetermined cutting and separation position on the base material. Due to the large number of reeds required, in order to save materials and control production costs, a base material is stamped with several reeds arranged in parallel along the longitudinal direction of the base material (to distinguish it from the finished reed, it is defined as "pre-cut reeds"). The cutting and separation process of the reed is to cut and separate each pre-cut reed arranged on the base material one by one at a predetermined cutting and separation position. This is the working background.

[0004] At present, it is known that the cutting process of the above-mentioned strip spring is realized by manually cutting one by one. Obviously, this processing method has technical problems such as low efficiency, inconsistent cutting accuracy, and high processing cost. Based on this technical problem, it is particularly important to develop a device that can be adapted to the automatic cutting of the above-mentioned strip spring. Summary of the invention

[0005] The technical purpose of the present invention is to provide an automatic cutting device for spring strip material that can improve cutting efficiency and precision and reduce processing costs in view of the particularity of the above-mentioned spring strip material and the shortcomings of the prior art.

[0006] The technical purpose of the present invention is achieved by the following technical solution: an automatic cutting device for a spring strip, wherein the spring strip comprises a base material and a plurality of pre-cut spring strips arranged in parallel in the longitudinal direction of the base material, and the spring strip is sequentially pre-set with a plurality of cutting and separation positions along the longitudinal direction; The automatic cutting device comprises a feeding mechanism and a cutting mechanism arranged in sequence along the longitudinal conveying direction of the spring strip, and a control cabinet for controlling the actions of the feeding mechanism and the cutting mechanism; The spring strip is inserted into the pushing channel of the feeding mechanism; The feeding mechanism pushes the spring strips forward sequentially one by one during the reciprocating motion, and the stroke signal of each push is fed back to the control cabinet; The cutting mechanism receives the instruction from the control cabinet, and is linked with the feeding mechanism with the stroke signal corresponding to each cutting and separating position, so as to separate and cut the spring strip pushed to the cutting position at the current cutting and separating position.

[0007] The above technical measures are aimed at the particularity of the above-mentioned reed strips with material. The feeding mechanism and the cutting mechanism are linked to each other so that the reciprocating action of the feeding mechanism can continuously push the reed strip one by one. According to the cutting setting of a single pre-cut reed or a pre-cut reed group, the cutting mechanism is triggered to perform the cutting action in response to the pushing stroke signal of each cutting and separation position, so that the cutting mechanism can accurately separate and cut the pre-cut reeds pushed into place without much manual intervention. The entire feeding and cutting process forms an automated operation with the technical characteristics of high cutting efficiency, high cutting accuracy, labor saving and low processing cost.

[0008] As one of the preferred technical solutions, the feeding mechanism comprises a feeding base and a slide rail, a pushing base, a pushing claw and a pushing cylinder arranged on the feeding base; A pushing channel for passing the spring strip is formed on the feeding base; The slide rail and the pushing cylinder are fixed on the feeding base along the pushing channel and staggered from the pushing channel; The pusher base is slidably assembled on the slide rail through a slider and staggered with the push channel. The pusher base is connected to the pusher cylinder, and the pusher cylinder drives the pusher base to move forward / backward on the slide rail; The pusher claw is hinged on the pusher base, the pusher claw has a tooth that can be inserted into the push channel, and a tensioning spring 2 is arranged between the pusher claw and the pusher base to pre-push the tooth of the pusher claw into the push channel; The push base moves backward, driving the push teeth of the push claw to switch the forward and backward push fulcrum positions on the spring strip; The forward pushing base drives the pushing claw to push the spring sheet material belt forward.

[0009] The feeding mechanism of the above technical measures can accurately and smoothly push the reed strips installed therein one by one during the reciprocating motion, so as to ensure the accuracy of the linkage with the cutting mechanism and guarantee the quality of the cut reed products.

[0010] Furthermore, the pushing base is arranged above the pushing channel; Correspondingly, the pusher claw is an L-shaped structure; The pusher claw is hinged on the pusher base, the teeth are located below the pusher base, the front side of the teeth is a straight edge structure, and the rear side is a bevel edge structure, and there is a movable gap between the bottom of the pusher base and the pusher claw for the pusher claw to flip; The second row of tension springs is arranged in the active gap between the pusher base and the pusher claw; The movable gap enables the pushing teeth of the pushing claw to withdraw from the corresponding pushing fulcrum position on the spring strip when turning over.

[0011] The feeding mechanism of the above technical measures takes the reed strip installed below as a reference, and forms a reliable fit with the stamping holes / grooves on the reed strip at the upper and lower positions, which, on the one hand, makes the molding structure of the entire feeding mechanism compact; on the other hand, it can make the pushing claw form an up and down flipping action centered on the hinge shaft, the upturned pushing claw releases the plug-in fit with the reed strip - that is, loosens the pushing fulcrum, and the downturned pushing claw forms a plug-in fit with the reed strip - that is, connects the pushing fulcrum, forming a "ratchet" reciprocating pushing effect, which has a simple structure, is easy to implement, and can ensure accurate and smooth pushing of the reed strip.

[0012] Furthermore, the push base is provided with a waist-shaped hole in the transverse direction corresponding to the push channel; The pusher base is connected with a sliding block on the slide rail through a waist-shaped hole, and the lateral position of the pusher base relative to the slide rail is adjustable.

[0013] The feeding mechanism of the above technical measures can adjust the lateral displacement of the pushing base on the slide rail, so that the relative position of the pushing claw on the pushing base and the spring strip worn below can be adjusted. On the one hand, it is beneficial for the pushing fulcrum on the spring strip to be flexibly established according to the working conditions; on the other hand, it can effectively adapt to spring strips of different specifications and has good versatility in the cutting and processing of spring strips of different specifications.

[0014] Furthermore, the feeding mechanism also has a non-return pressure plate located upstream of the pushing base and extending into the pushing channel; The non-return pressure plate is connected to a tension spring 1 which drives the non-return pressure plate to press the spring strip in the push channel; The non-return pressure plate is pressed toward the spring strip in the pushing channel in a surface contact manner.

[0015] The pushing characteristics of the above-mentioned pushing claw with the reciprocating pushing effect of the "ratchet" on the reed strip make the plug-in fit of the pushing claw on the reed strip be released. In fact, it is released by being squeezed up and turned over under the action of the backward force (i.e. the force of the pushing cylinder). During the process of being squeezed up and turned over and retreating, the teeth of the pushing claw are in contact with the reed strip and have a certain backward force. Based on this, the reed strip installed in the feeding mechanism needs to be clamped and kept relatively stable.

[0016] The above technical measures are aimed at the above technical status quo. The non-return pressure plate applies a certain downward pressure to the spring strip entering the feeding mechanism at the upstream of the push base to clamp it, so as to reduce or even avoid the retreat of the spring strip during the release and retreat of the push claw, so that the retreating push claw moves based on the spring strip, ensuring that the retreat of the push claw can stably switch to the next push fulcrum. When the push force of the push claw on the spring strip is greater than the pressure of the non-return pressure plate, the spring strip moves forward, which requires that the non-return pressure plate can only use surface contact downward pressure to position the spring strip, and use friction to limit the retreat of the spring strip, and cannot use a plug-in stop structure.

[0017] Furthermore, a non-return release structure is connected to the feeding base at the non-return pressure plate, which can push the non-return pressure plate to lift and release the spring strip in the push channel. This technical measure is aimed at the existence of the non-return pressure plate and the particularity of the feeding mechanism needing to be repaired and the spring strip replaced in the actual working environment. The non-return release structure that can push the non-return pressure plate can lift the non-return pressure plate and separate from the spring strip to make way for the push channel on the feeding base. Preferably, the non-return release structure adopts an eccentric wheel structure with simple structure and convenient operation.

[0018] Furthermore, the top of the feeding base has a material belt groove formed with an inner concave structure to form a pushing channel; The strip groove protrudes upwards near the longitudinal edge of the pusher claw, forming a reference guide edge for the spring strip to move forward; The spring strip inserted into the strip groove moves forward along the reference guide edge of the strip groove.

[0019] The above-mentioned technical measures use the material strip groove on the feeding base to form a pushing channel that can accommodate the corresponding reed material strip, and use the longitudinal edge of one side of the material strip groove to form a positioning guide edge for the forward conveying of the reed material strip, so as to improve the accuracy of the forward conveying of the reed material strip, including the accuracy of cooperation with the pushing claw and the accuracy of cooperation with the cutting mechanism.

[0020] Furthermore, the top of the feeding base also has a recessed groove which is formed into a concave structure and constitutes a pushing channel; The clearance groove is arranged in parallel with the material belt groove and is lower than the material belt groove; The straight portion of the spring strip inserted into the pushing channel moves forward along the reference guide edge of the strip groove, and the curved portion extends into the clearance groove.

[0021] The above technical measures are aimed at the particularity that the stamped spring strip already has a bent portion. A clearance groove is arranged next to the strip groove. The two work together to form a pushing channel, which can ensure the stable insertion of the spring strip by the strip groove and effectively solve the interference between the bent portion on the spring strip and the strip groove.

[0022] As one of the preferred technical solutions, the cutting and separation position on the reed strip is located between adjacent pre-cut reeds; A positioning hole or a positioning groove is provided on the base material of the reed strip corresponding to each pre-cut reed, and the positioning hole or the positioning groove can accommodate the teeth of the pusher claw; The spring strip is formed with the positioning hole or positioning groove on the base material to form a pushing fulcrum position that matches the pushing claw.

[0023] The reed strip of the above technical measures is aimed at the cutting and separation of a single pre-cut reed, and at the particularity of the cooperation between the above reed strip and the pushing claw in the feeding mechanism. Positioning holes / positioning grooves corresponding to each pre-cut reed are formed on the base material treated as waste material to cooperate with the pushing claw, so that the reed strip is pushed in the feeding mechanism with a single pre-cut reed as a pushing stroke. The formation of the positioning holes / positioning grooves on the base material as the fulcrum will not have an adverse effect on the quality of the finished reed due to the automatic feeding of the feeding mechanism, compared with the formation on the reed as a finished product.

[0024] Alternatively, as one of the preferred technical solutions, the cutting and separation position on the spring strip is located between adjacent pre-cut spring groups, and each pre-cut spring group has at least two pre-cut springs arranged in parallel; A positioning hole or a positioning groove is provided on the base material of the reed strip corresponding to each pre-cut reed or each pre-cut reed group, and the positioning hole or the positioning groove can accommodate the teeth of the pusher claw; The spring strip is formed with the positioning hole or positioning groove on the base material to form a pushing fulcrum position that matches the pushing claw.

[0025] The reed strip of the above technical measures is aimed at both the cutting and separation of multiple pre-cut reeds as a unit and the particularity of the cooperation between the above reed strip and the pushing claw in the feeding mechanism. A positioning hole / positioning groove corresponding to each pre-cut reed group is formed on the base material treated as waste material to cooperate with the pushing claw, so that the reed strip is pushed in the feeding mechanism with a group of pre-cut reed groups as one pushing stroke; or, a plurality of positioning holes / positioning grooves corresponding to each pre-cut reed group are formed on the base material treated as waste material to cooperate with the pushing claw, so that the reed strip is pushed in the feeding mechanism with a group of pre-cut reed groups as multiple superimposed pushing strokes; the molding of the positioning holes / positioning grooves on the base material as the fulcrum will not cause adverse effects on the quality of the finished reed due to the automatic feeding of the feeding mechanism compared to the molding on the reed as a finished product.

[0026] As one of the preferred technical solutions, the cutting mechanism comprises a cutting base, a cutting bracket, and a cutting die frame and a cutting cylinder mounted on the cutting bracket; The cutting base is arranged at the downstream end of the feeding mechanism and is sequentially connected with the pushing channel. The cutting base is provided with a fixed cutter that cooperates with the movable cutter on the cutting die frame. The cutting bracket is used to support the cutting cylinder and assemble the cutting die frame with a guide structure; The cutting die frame is connected to the cutting cylinder and is located above the cutting base. The cutting die frame is driven by the cutting cylinder to move upward / downward in the cutting bracket. The upward cutting die frame is away from the cutting base, and the downward cutting die frame is close to the cutting base. The cutting die frame is equipped with a movable cutter for cutting the reed strip. The downward cutting die frame drives the movable cutter to approach the cutting base, and cooperates with the fixed cutter to cut the reed strip on the cutting base at the designed cutting and separation position, so that the current cutting and separation position on the reed strip is cut and separated.

[0027] The cutting mechanism of the above technical measures cooperates with the above feeding mechanism, and can reliably trigger the cutting mechanism to perform the cutting action with the corresponding feeding stroke of each cutting and separation position. Its operation is accurate and stable, and will not cause damage to the spring strip fed into place.

[0028] Furthermore, the cutting die frame is equipped with a positioning pin in a telescopic structure, and the initial position of the positioning pin is lower than the active cutter; the downward cutting die frame drives the positioning pin to approach the cutting base, and approaches the spring strip on the cutting base before the active cutter, and positions the spring strip on the cutting base at the designed position and staggers the cutting and separation position. Under the premise of not interfering with the action of the active cutter, this technical measure guides the spring strip below according to the designed position through the positioning pin when the cutting mechanism performs the cutting action, so as to correct the position of the spring strip pushed by the feeding mechanism relative to the cutting mechanism, and guides the cutting and separation position to be cut and the trajectory of the cutter, thereby improving the cutting quality.

[0029] Furthermore, the cutting die frame is equipped with a pre-pressing plate in a telescopic structure, and the initial position of the pre-pressing plate is lower than the movable cutting knife; The downward cutting die frame drives the pre-pressing plate to approach the cutting base, and approaches the spring strip on the cutting base before the active cutter, and presses down the spring strip on the cutting base at the designed position, and staggers the cutting and separation position. Under the premise of not interfering with the action of the active cutter, this technical measure can press down and position the spring strip on the cutting position through the pre-pressing plate when the cutting mechanism performs the cutting action, so as to ensure that the cut spring strip remains stable and does not warp and deform, thereby improving the cutting quality.

[0030] As one of the preferred technical solutions, the automatic cutting device also has a material discharge mechanism; The material discharging mechanism comprises a material discharging frame and a material tray support arranged on the material discharging frame; The tray bracket is equipped with a feeding motor and a tray carrier frame driven to rotate by the feeding motor, and the action of the feeding motor is controlled by the control cabinet; The tray carrier is provided with a tray shaft, and the spring strip roll is assembled on the tray shaft.

[0031] The above technical measures enable the unloading mechanism to form a linkage with the above-mentioned feeding mechanism and cutting mechanism through the control cabinet, especially with the pushing process of the above-mentioned feeding mechanism, so that the unloading mechanism discharges the material accordingly due to the continuous conveying of the reed material strip by the feeding mechanism. No manual intervention is required in the unloading, feeding and cutting processes. The entire cutting process only requires manual loading of the reed material strip and collection of the cut finished reed according to the set method. The degree of automation is higher, and it has more obvious technical characteristics of high cutting efficiency, high cutting accuracy, labor saving and low processing cost.

[0032] Furthermore, the unloading mechanism also has an unloading tension detection sensor and an unloading slack detection sensor arranged on the unloading frame; The unloading tension detection sensor and the unloading slack detection sensor are arranged on the unloading frame at intervals, and a spring strip passage is formed between the unloading tension detection sensor and the unloading slack detection sensor; The lead-out reed strip of the reed strip roll mounted on the tray carrier is installed in the feeding mechanism through the passage between the unwinding tension detection sensor and the unwinding slack detection sensor, the unwinding tension detection sensor is located on the tensioning direction side of the passing reed strip, and the unwinding slack detection sensor is located on the slack direction side of the passing reed strip; When the unloading tension detection sensor detects the spring strip, a signal is fed back to the control cabinet, and the control cabinet controls the unloading motor to start unloading according to the signal of the unloading tension detection sensor; When the unloading slack detection sensor detects the reed strip, a signal is fed back to the control cabinet, and the control cabinet controls the unloading motor to stop unloading according to the signal of the unloading slack detection sensor.

[0033] The above technical measures are aimed at the characteristic that the reed material strip between the unloading mechanism and the feeding mechanism changes dynamically in the form of a catenary. The reed material strip that changes dynamically in the form of a catenary cooperates with the corresponding side sensor to realize the control of starting / stopping the unloading through the control cabinet to adapt to the continuous pushing of the feeding mechanism. The control is reliable and the overall structure is simple.

[0034] Furthermore, a waist-shaped hole is provided on the tray carrier, and the tray carrier is connected to the tray shaft through the waist-shaped hole, and the position of the tray shaft on the tray carrier is adjustable. Due to the adjustable characteristics of the tray shaft on the tray carrier, this technical measure can be adapted to the assembly of spring strips of different sizes on the tray carrier, and has good versatility.

[0035] Furthermore, the tray carrier is connected to the discharge motor via a rotating shaft, and the tray carrier is connected to the rotating shaft via a loose linear adjustment structure; The rotating shaft and the tray shaft are spaced apart on the tray carrier; A material tray baffle is connected to the rotating shaft, and the material tray baffle and the material tray supporting frame are matched with each other on the rotating shaft. The material tray baffle is used to block and limit the spring strip roll assembled on the material tray supporting frame.

[0036] The above technical measures can form a stable assembly for spring strip rolls of different specifications and shapes through the adjustable assembly of the material tray carrier on the rotating shaft and the spacing coordination between the material tray baffle and the material tray carrier, and have good versatility.

[0037] As one of the preferred technical solutions, the automatic cutting device further comprises a workbench that carries each component mechanism and arranges each component mechanism in a relatively fixed position; The workbench is arranged with a reed collection box at a position corresponding to the cutting mechanism; The opening position of the reed collecting box corresponds to the cutting position of the cutting mechanism.

[0038] The above technical measures effectively integrate the unloading mechanism, feeding mechanism and cutting mechanism on the same supporting structure through the workbench to form an overall structural equipment body. On the one hand, it can maintain the stability of the mutual coordination between the various mechanisms, and on the other hand, it is conducive to the movement, installation and management of the overall equipment.

[0039] The reed collection structure on the above-mentioned workbench can allow the cut reeds to enter the corresponding collection box for centralized collection and management. The materials can be collected regularly or by quantity without the need for personnel to be on duty to collect the materials, which is conducive to the realization of automated operation of the overall equipment and standardized management of waste materials and reeds.

[0040] The beneficial technical effect of the present invention is as follows: the above technical measures are aimed at the particularity of the above-mentioned strip spring, and the feeding mechanism and the cutting mechanism are linked and coordinated through the control cabinet, especially the unloading mechanism, the feeding mechanism and the cutting mechanism are linked and coordinated through the control cabinet, so that the reciprocating action of the feeding mechanism continuously and successively pushes the spring strip, and the pushing stroke signal corresponding to each cutting separation position triggers the cutting mechanism to perform the cutting action, so that the cutting mechanism accurately separates and cuts the pushed spring strip, and the unloading mechanism timely and reasonably discharges the spring strip according to the influence of the pushing process of the feeding mechanism on the tension of the spring strip, and the action coordination of the three actuators is good, and the whole cutting process only needs manual loading of the spring strip and collection of the cut finished spring strip according to the set method, without too much manual intervention, and the whole feeding and cutting process forms an automated operation with a higher degree of automation, and has the technical characteristics of high cutting efficiency, high cutting accuracy, labor saving and low processing cost.

[0041] Based on the action characteristics of the above three actuators, the control cabinet as the control center mainly involves the push stroke signal sensing of the feeding mechanism, the cutting action triggering of the cutting mechanism cutting motor, the signal sensing of the tension of the spring strip, the action triggering of the unwinding motor, the reset action triggering of the pushing motor and the cutting motor, etc. It does not involve complicated control procedures and can be realized by using a simple controller. Therefore, the molding structure of the cutting device based on the above control cabinet is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A structural schematic diagram of the present invention.

[0043] Figure 2 It is the front view of the present invention.

[0044] Figure 3 for Figure 2 Left view of .

[0045] Figure 4 for Figure 2 Top view of the .

[0046] Figure 5 for Figures 1 to 4 The structural schematic diagram of the discharge mechanism is shown.

[0047] Figure 6 For assembly in Figure 5 Schematic diagram of the structure of the reed strip on the unloading mechanism shown.

[0048] Figure 7 for Figures 1 to 4 The structural schematic diagram of the feeding mechanism is shown.

[0049] Figure 8 for Figure 7 A partial enlarged view of the figure (showing the matching relationship between the reed strip and the feeding mechanism).

[0050] Fig. 9 for Figure 7 The shown schematic diagram is a partial structural diagram of the feeding mechanism cut away at the pushing claw (illustrating the matching relationship between the spring strip and the feeding mechanism).

[0051] Fig.10 for Figure 7 The shown schematic diagram is a partial structural diagram of the feeding mechanism cut away at the non-return pressure plate (illustrating the matching relationship between the spring strip and the feeding mechanism).

[0052] Fig.11 for Figures 1 to 4 Schematic diagram of the structure of the cutting mechanism shown.

[0053] Fig.12 for Fig.11 A stereogram looking up.

[0054] Fig.13 for Fig.11 Schematic diagram of the coordination structure between the cutting mechanism and the spring strip.

[0055] Meaning of the codes in the figure: 10—Workbench; 20—discharging mechanism; 201—discharging rack; 202—material tray bracket; 203—rotating shaft; 204—material tray bearing frame; 205—material tray shaft; 206—material tray baffle; 207—discharging motor; 208—discharging tension detection sensor; 209—discharging slack detection sensor; 30—feeding mechanism; 301—feeding base; 302—material belt groove; 303—guide plate; 304—non-return pressure plate; 305—connecting rod; 306—tensioning spring 1; 307—non-return release eccentric wheel; 308—slide rail; 309—push base; 3010—push claw; 3011—hinge shaft; 3012—tensioning spring 2; 3013—push cylinder; 3014—travel limit stopper; 3015—push tooth; 3016—give way groove; 40—cutting mechanism; 401—cutting bracket; 402—cutting die frame; 403—cutting cylinder; 404—movable cutter; 405—positioning needle; 406—pre-pressing plate; 407—cutting base; 50—control cabinet; 60—reed strip; 601—base material; 602—pre-cut reed; 603—positioning hole. DETAILED DESCRIPTION

[0056] The present invention relates to the technical field of conductive spring processing, and in particular to an automatic spring strip cutting device. The main technical solution of the present invention is specifically described in combination with multiple embodiments. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 , Fig.11 , Fig.12 and Fig.13 The technical solution of the present invention is explained clearly and in detail; although other embodiments are not separately drawn with drawings, their main structures can still refer to the drawings of embodiment 1.

[0057] It should be noted that the drawings of the present invention are schematic, and unnecessary details have been simplified to clarify the technical purpose of the present invention, so as to avoid blurring the technical solution of the present invention that contributes to the prior art. In addition, the expressions "approximately", "substantially" and the like regarding quantity or matching relationship in the following text mean that reasonable assembly errors and processing errors in the industry are allowed to exist, and do not literally express absolute quantities or matching relationships.

[0058] Example 1 The present invention is an automatic cutting device for spring strips, and its purpose is to cut spring strips such as Figure 6As shown, the spring strip 60 has a base material 601 that is well-separated by punching and not completely separated, and a plurality of pre-cut springs 602 arranged in parallel in the longitudinal direction of the base material 601. Usually, the structure and size of each pre-cut spring 602 on an independent spring strip 60 are the same, the main part of the base material 601 is located on the same side of the plurality of pre-cut springs 602 arranged in parallel in the longitudinal direction, and the molding structure of each pre-cut spring 602 and the unseparated connection structure between the pre-cut spring 602 and the base material 601 are designed according to the convenience of punching and electroplating.

[0059] That is to say, the spring strip 60 of the above structure has a base material 601 at a corresponding position at one end thereof corresponding to the arrangement position of each pre-cut spring strip 602, and the base material 601 between adjacent pre-cut spring strips 602 is continuous, so that a plurality of pre-cut spring strips 602 that are punched and cut are formed on the same strip structure. According to the use requirements, the cut spring strip 60 is cut and separated based on each pre-cut spring strip 602 as a unit, that is, the adjacent pre-cut spring strips 602 are cut and separated at their base material 601, which also makes the spring strip 60 have a plurality of cutting and separation positions sequentially predetermined along the longitudinal direction, and each cutting and separation position is basically located at the middle position of the adjacent pre-cut spring strips 602 (except the head end and the tail end); each pre-cut spring strip 602 that is separated and disconnected usually has a base material 601 at a corresponding position, and the base material 601 is pulled apart and separated when the spring strip is installed on the corresponding housing (base). Based on this structural characteristic, in order to adapt to the pushing action of the feeding mechanism 30 described below, a positioning hole 603 connecting the two sides in the thickness direction is opened on the base material 601 corresponding to the arrangement position of each pre-cut spring sheet 602 (or a positioning groove concave on the top side is used instead, but the effect is not good), that is, each positioning hole 603 corresponds to a pushing stroke of a predetermined cutting and separation position. The positioning hole 603 can accommodate the teeth 3015 of the pushing claw 3010 described below, so that the pushing force point of the feeding mechanism 30 described below on the spring sheet material strip 60 acts on the base material 601, avoiding unnecessary mechanical force damage to the pre-cut spring sheet 602.

[0060] See also Figures 1 to 13As shown, with the spring strip 60 of the above structure as the object to be cut and processed, the spring strip automatic cutting device of the present invention comprises a workbench 10 and a feeding mechanism 20, a feeding mechanism 30, a cutting mechanism 40 and a control cabinet 50 arranged in different areas of the workbench 10. In the command allocation of the control cabinet 50, the feeding mechanism 20, the feeding mechanism 30 and the cutting mechanism 40 are coordinated and cooperated, which is more directly reflected in the linkage and cooperation between the feeding mechanism 30 and the cutting mechanism 40, so that the reciprocating action of the feeding mechanism 30 continuously pushes each pre-cut spring 602 on the spring strip 60 one by one, and each push to the right position triggers the cutting mechanism 40 to perform the cutting action, so that the cutting mechanism 40 performs precise separation and cutting of the pre-cut spring 602 pushed to the right position, so that the feeding mechanism 20 timely and reasonably discharges the material according to the influence of the pushing process of the feeding mechanism 30 on the tension of the spring strip 60.

[0061] For details, see Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the material discharge mechanism 20 on the workbench 10 comprises a material discharge frame 201 and a material tray support 202 arranged on the material discharge frame 201 , a material discharge tension detection sensor 208 and a material discharge slack detection sensor 209 .

[0062] The unloading frame 201 is vertically fixed on the workbench 10, and its height is higher than the feeding mechanism 30 on the workbench 10. The top of the unloading frame 201 is used to connect the material tray bracket 202, the middle part is used to connect the material unloading tension detection sensor 208, and the lower part is used to connect the material unloading slack detection sensor 209. In order to enhance the flexibility in use, the unloading frame 201 is preferably formed with a slide rail structure, and the material tray bracket 202, the material unloading tension detection sensor 208 and the material unloading slack detection sensor 209 are respectively fixed on the unloading frame with a locking structure, and the height adjustment on the unloading frame 201 can be achieved by adjusting the looseness / tightness of the locking structure. Of course, in order to better adapt to spring strip rolls of different specifications and cooperate with the feeding mechanism 30 below, the material tray bracket 202, the material discharge tension detection sensor 208 and the material discharge slack detection sensor 209 respectively form waist-shaped hole installation structures (for the material discharge tension detection sensor 208 and the material discharge slack detection sensor 209, the waist-shaped hole formation refers to its supporting frame), and the corresponding locking structure is fixed through the waist-shaped hole, and the lateral position adjustment on the discharge machine frame 201 can be achieved through the loose / tight adjustment of the locking structure.

[0063] The tray support 202 is equipped with a discharge motor 207 , a rotating shaft 203 and a tray carrier 204 . The output shaft of the discharge motor 207 drives the tray carrier 204 to rotate via the rotating shaft 203 . In order to make the tray carrier 204 adaptable to the assembly of spring strip rolls of different specifications, the rotating shaft 203 adopts a non-circular keyway structure, and the tray carrier 204 is installed on the rotating shaft 203 and fixed by a locking structure. The linear displacement adjustment of the tray carrier 204 on the rotating shaft 203 is achieved by loosening / tightening adjustment of the locking structure; a waist-shaped hole is opened on the tray carrier 204, and the tray carrier 204 is connected to a tray shaft 205 basically parallel to the rotating shaft 203 through the waist-shaped hole. The tray shaft 205 is fixed at the waist-shaped hole of the tray carrier 204 by the locking structure, and the position of the tray shaft 205 on the tray carrier 204 is adjustable by loosening / tightening adjustment of the locking structure. The tray shaft 205 and the rotating shaft 203 are matched with a spacing structure on the tray carrier 204.

[0064] A disc-structured tray baffle 206 is also fixedly connected to the rotating shaft 203. Relative to the arrangement position of the tray carrier 204, the tray baffle 206 is fixed at the root of the rotating shaft 203, and the tray baffle 206 and the tray carrier 204 are matched in spacing structure on the rotating shaft 203, and the tray shaft 205 connected to the tray carrier 204 protrudes toward the tray baffle 206, so that the spring strip roll assembled on the tray shaft 205 is stopped and limited by the tray baffle 206 to prevent it from falling off. The adjustable structure of the tray carrier 204 on the rotating shaft 203 as described above is adjusted according to the specifications of the spring strip roll to be assembled based on the tray baffle 206.

[0065] It can be seen from the molding structure of the above-mentioned tray support 202 that the stamped and electroplated spring strip 60 is managed in round rolls. In the cutting of the present invention, the rolled spring strip 60 (i.e., the above-mentioned "spring strip roll") is assembled on the tray shaft 205, similar to a wire drum. The tray support frame 204 driven by the unwinding motor 207 rotates, so that the spring strip roll on the tray shaft 205 is stably spread out according to the design requirements, and the spread spring strip 60 is sent to the feeding mechanism 30 described below.

[0066] The action of the above-mentioned unloading motor 207 is controlled by the control cabinet 50, and the instruction of the control cabinet 50 to control the action of the unloading motor 207 is based on the detection signals of the unloading tension detection sensor 208 and the unloading slack detection sensor 209.

[0067] As described above, the unloading tension detection sensor 208 and the unloading slack detection sensor 209 are arranged at an upper and lower spacing on the unloading frame 201 through their respective support frames, and the arrangement spacing therebetween forms a passage for the reed strip 60 led out from the reed strip roll, and the reed strip 60 is installed in the feeding mechanism 30 below through this passage, and the reed strip 60 led out from the material tray shaft 205 forms a linear track similar to a catenary after being installed at the feeding mechanism 30, and the unloading tension detection sensor 208 and the unloading slack detection sensor 209 are used to detect the tension of the linear track. In order to ensure the reliable forming of the aforementioned linear trajectory and guarantee the rationality of the unloading process, the unloading tension detection sensor 208 and the unloading slack detection sensor 209 on the unloading rack 201 are arranged in a direction away from the feeding mechanism 30, including the material tray bracket 202. That is to say, assuming that the feeding mechanism 30 is arranged on the right side of the unloading rack 201, then the material tray bracket 202, the unloading tension detection sensor 208 and the unloading slack detection sensor 209 are arranged on the left side of the unloading rack 201, and preferably extend from the left side.

[0068] As described above, the lead-out spring strip 60 of the spring strip roll mounted on the tray carrier 204 is installed in the feeding mechanism 30 through the passage between the unwinding tension detection sensor 208 and the unwinding slack detection sensor 209, so the unwinding tension detection sensor 208 is located on the tensioning direction side (i.e., the upper side) of the passing spring strip 60, and the unwinding slack detection sensor 209 is located on the slack direction side (i.e., the lower side) of the passing spring strip 60. When the unwinding tension detection sensor 208 detects the spring strip 60, a signal is fed back to the control cabinet 50, and the control cabinet 50 controls the unwinding motor 207 to start unwinding with the signal of the unwinding tension detection sensor 208. When the unwinding slack detection sensor 209 detects the spring strip 60, a signal is fed back to the control cabinet 50, and the control cabinet 50 controls the unwinding motor 207 to stop unwinding with the signal of the unwinding slack detection sensor 209.

[0069] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 7 , Figure 8 , Fig. 9 and Fig.10 As shown, the feeding mechanism 30 on the workbench 10 has a feeding base 301 and a slide rail 308 arranged on the feeding base 301, a pushing base 309, a pushing claw 3010, a pushing cylinder 3013, a travel limit block 3014 and a non-return release eccentric wheel 307.

[0070] The top of the feeding base 301 is formed with a concave structure with a material belt groove 302 and a clearance groove 3016 along the pushing direction of the spring strip 60. The material belt groove 302 and the clearance groove 3016 constitute a pushing channel at the top of the feeding base 301. The horizontal width of the pushing channel is greater than the horizontal width of the currently installed spring strip 60. One side of the longitudinal side of the material belt groove 302 is convex upward to form a reference guide edge for the installed spring strip 60 to move forward. The spring strip 60 installed in the material belt groove 302 is attached to the reference guide edge with the edge of the base material 601, and moves forward along the reference guide edge of the material belt groove 302. The clearance groove 3016 is formed on the side of the material strip groove 302 with a structure lower than the material strip groove 302, so that the bent part of the currently installed spring material strip 60 can extend over without position interference, so that the bent part of the currently installed spring material strip 60 can extend in the air in the clearance groove 3016.

[0071] The slide rail 308 and the pushing cylinder 3013 are fixed on the feeding base 301 along the above-mentioned pushing channel, but need to be staggered from the pushing channel so as not to cause position interference to the spring strip 60 in the pushing channel.

[0072] The bottom of the push base 309 is slidably assembled on the slide rail 308 through a slider, but the push channel needs to be staggered, so the push base 309 is arranged above the push channel and cannot cause position interference to the spring strip 60 in the push channel. The push base 309 is connected to the push cylinder 3013, usually at the downstream of the push cylinder 3013 at the push base 309, and the push base 309 is driven by the push cylinder 3013 to move forward / backward on the slide rail 308. In order to limit the forward travel of the push base 309 and sense the travel to feedback to the control cabinet 50, under the premise of not interfering with the push channel on the feeding base 301, the travel limit block 3014 is arranged on the feeding base 301 downstream of the push base 309, and the forward push base 309 abuts against the travel limit block 3014.

[0073] The pusher claw 3010 is an L-shaped structure, and its turning point is hinged to the rear side (the side away from the cutting mechanism 40) of the pusher base 309 through a hinge shaft 3011. The bottom of the pusher claw 3010 has a tooth 3015 located below the pusher base 309, and the front side (the side facing the cutting mechanism 40) of the tooth 3015 is a straight edge structure, and the rear side (the side away from the cutting mechanism 40) is a bevel edge structure. There is a movable gap between the bottom of the pushing base 309 and the bottom folded edge of the pushing claw 3010 for the pushing claw 3010 to flip over. The movable gap is slightly larger than the thickness of the spring strip 60 worn by the feeding base 301, so that the teeth 3015 of the pushing claw 3010 in the flipped-up state can exit the positioning hole 603 on the spring strip 60; the rear side of the pushing base 309 and the top folded edge of the pushing claw 3010 form a vertical edge match. When the teeth 3015 of the pushing claw 3010 are inserted into the positioning hole 603 of the spring strip 60, the rear side of the pushing base 309 and the top folded edge of the pushing claw 3010 form a vertical edge contact match. To ensure that the pushing claw 3010 is automatically inserted into the positioning hole 603 of the spring strip 60 during the retreat process, a spirally structured tensioning spring 2 3012 is arranged in the movable gap between the bottom of the aforementioned pushing base 309 and the bottom folded edge of the pushing claw 3010. The upper part of the tensioning spring 2 3012 is assembled in the internal inner hole of the pushing base 309, and the bottom abuts against the pushing claw 3010, that is, the pushing claw 3010 is located between the pushing base 309 and the pushing claw 3010, so that a downward force is always applied to the pushing claw 3010.

[0074] As described above, the pusher claw 3010 on the pusher base 309 is to cooperate with the spring strip 60 in the pushing channel, so that the teeth 3015 of the pusher claw 3010 find the pushing fulcrum, i.e., the fulcrum, on the spring strip 60. As described above, the fulcrum is the positioning hole 603 on the spring strip 60. Therefore, based on the structure of the spring strip 60 inserted into the strip groove 302 of the feeding base 301, the pusher claw 3010 assembled on the pusher base 309 should be close to the reference guide edge of the strip groove 302, and take the reference guide edge of the strip groove 302 as the reference. In order to adapt to spring strips 60 of different specifications, the pushing base 309 is provided with a waist-shaped hole in the transverse direction corresponding to the pushing channel. The pushing base 309 is connected to the slider on the slide rail 308 through a locking structure connected at the waist-shaped hole. The lateral position of the pushing base 309 relative to the slide rail 308 can be adjusted by loosening / tightening the locking structure.

[0075] Based on the hinge structure and pre-tightening structure of the pusher claw 3010 on the pusher base 309, the teeth 3015 of the pusher claw 3010 are initially extended into the push channel on the feed base 301. The pusher base 309 retreats under the drive of the pusher cylinder 3013, driving the pusher claw 3010 to retreat on the spring strip 60. Since the rear side of the teeth 3015 of the pusher claw 3010 is a bevel structure, under the action of the retreating pulling force, the pusher claw 3010 will be squeezed and flipped up, automatically retreating from the current positioning hole 603 on the spring strip 60, and always abutting against the spring strip 60 under the pre-tightening action of the tension spring 2 3012. With the retreat stroke, under the pre-tightening action of the tension spring 2 3012, the pusher claw 3010 automatically enters the next positioning hole 603, and switches the front and rear push fulcrum positions-positioning holes 603 on the spring strip 60. The pushing base 309 moves forward under the drive of the pushing cylinder 3013. Since the teeth 3015 of the pushing claw 3010 are inserted into the current positioning hole 603 of the spring strip 60, and since the front side of the teeth 3015 of the pushing claw 3010 is a straight-edge structure, the teeth 3015 of the pushing claw 3010 will not withdraw from the current positioning hole 603 on the spring strip 60 under the forward drive of the pushing cylinder 3013, but will continue to abut against the spring strip 60, pushing the spring strip 60 forward.

[0076] Due to the pushing property of the pushing claw 3010 on the pushing base 309 on the lower spring strip 60, and the need to switch from front to back between the front and rear positioning holes 603 of the spring strip 60 during the continuous pushing process, there is a retreating force on the spring strip 60 during the switching. In order to prevent or reduce the retreat of the spring strip 60, the non-return pressure plate 304 needs to press the spring strip 60 on the feeding base 301.

[0077] The non-return pressure plate 304 is arranged on the feeding base 301 upstream of the pushing base 309. It should extend into the pushing channel without interfering with the pushing channel on the feeding base 301, and form a certain degree of compression on the spring strip 60 in the pushing channel. Therefore, the outer side of the non-return pressure plate 304 is connected to a connecting rod 305 installed in the feeding base 301, and the inner side of the non-return pressure plate 304 extends into the strip groove 302; the connecting rod 305 in the feeding base 301 is connected to a tensioning spring 1 306 for tensioning the connecting rod 305. Under the action of the tensioning spring 1 306, the connecting rod 305 drives the non-return pressure plate 304 to press against the spring strip 60 in the pushing channel. Since the anti-return pressure plate 304 presses down on the spring strip 60 in the strip groove 302 in order to offset the force exerted on the spring strip 60 by the pushing claw 3010 when it retreats, the restriction of the anti-return pressure plate 304 on the spring strip 60 in the strip groove 302 should not form an obstruction. The anti-return pressure plate 304 presses against the spring strip 60 in the pushing channel in a surface contact manner, and the rear side edge of the anti-return pressure plate 304 (the edge facing the forward direction of the spring strip 60) is preferably formed with a chamfered structure.

[0078] Based on the existence of the non-return pressure plate 304 structure, in order to adapt to the replacement and necessary maintenance of the spring strip 60, it is necessary to form a structure on the feeding base 301 that can lift the non-return pressure plate 304 and release the non-return limit. In this way, on the feeding base 301, a non-return release eccentric wheel 307 located below the non-return pressure plate 304 is connected by an axis. When the non-return release eccentric wheel 307 rotates to the lowest position, it will not cause position interference with the non-return pressure plate 304 that is pressed down; when the non-return release eccentric wheel 307 rotates to the highest position, the push non-return pressure plate 304 is lifted and released in the push channel (if there is no spring strip 60, the push channel is vacated). It can also be seen from this that the outer side of the non-return pressure plate 304 extends to the top of the non-return release eccentric wheel 307.

[0079] In order to ensure that the spring strip 60 is stably installed in the push channel of the feeding base 301, a guide plate 303 is connected to the feeding base 301 on the upstream side of the non-return pressure plate 304. The guide plate 303 extends to the top of the push channel but does not interfere with the push channel.

[0080] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Fig.11 , Fig.12 and Fig.13 As shown, the cutting mechanism 40 on the workbench 10 comprises a cutting base 407 , a cutting support 401 , and a cutting die frame 402 and a cutting cylinder 403 assembled on the cutting support 401 .

[0081] The cutting base 407 is arranged at the downstream end of the feeding base 301 of the feeding mechanism 20, and is sequentially connected with the pushing channel of the feeding base 301. A fixed cutter is formed on the cutting base 407 to cooperate with the movable cutter 404 described below.

[0082] The cutting bracket 401 is used to support the cutting cylinder 403, and the cutting die frame 402 is assembled with a guide structure. The cutting die frame 402 is connected to the cutting cylinder 403, is located inside the cutting bracket 401, and is located above the cutting base 407. The cutting die frame 402 is driven by the cutting cylinder 403 to move up / down in the cutting bracket 401. The upward cutting die frame 402 is away from the cutting base 407, and the downward cutting die frame 402 is close to the cutting base 407.

[0083] The cutting die frame 402 is equipped with a movable cutter 404 for cutting the spring strip 60. The movable cutter 404 is assembled on the cutting die frame 402 to form a shearing match with the fixed cutter on the cutting base 407. The downward cutting die frame 402 drives the movable cutter 404 to approach the cutting base 407, and cooperates with the fixed cutter to cut the spring strip 60 on the cutting base 407 according to the designed cutting and separation position, so that the current pre-cut spring 601 on the spring strip 60 is separated.

[0084] In order to ensure that the cut spring strip 60 remains stable at the cutting position and accurately guide the cutting track of the active cutter 404, a positioning pin 405 is installed on the cutting die frame 402 in a retractable structure. The arrangement position of the positioning pin 405 corresponds to the positioning hole 603 on the spring strip 60. When the spring strip 60 is pushed to the cutting position, the positioning hole 603 corresponding to the pre-cut spring strip 602 to be cut is basically located below the positioning pin 405. The initial position of the positioning pin 405 on the cutting die frame 402 is lower than the active cutter 404. The downward cutting die frame 402 drives the positioning pin 405 to approach the cutting base 407, and approaches the spring strip 60 on the cutting base 407 before the movable cutter 404, until it is inserted into the positioning hole 603 corresponding to the pre-cut spring strip 602 to be cut. During the insertion process, the position of the spring strip 60 pushed by the feeding mechanism 30 relative to the cutting mechanism 40 is corrected, and the cutting separation position (i.e., the incision position) of the pre-cut spring strip 602 to be cut and the trajectory of the movable cutter 404 are corrected.

[0085] In order to ensure that the cut spring strip 60 remains stable at the cutting position and does not deviate or warp during the cutting process of the movable cutter 404, a pre-pressing plate 406 is also installed on the cutting die frame 402 in a retractable structure. The arrangement position of the pre-pressing plate 406 on the cutting die frame 402 is offset from the cutting separation position where the movable cutter 404 is to cut the spring strip 60.

[0086] The initial arrangement position of the pre-pressing plate 406 on the cutting die frame 402 is lower than the movable cutter 404. The downward cutting die frame 402 drives the pre-pressing plate 406 to approach the cutting base 407, and approaches the spring strip 60 on the cutting base 407 before the movable cutter 404, and abuts the spring strip 60 on the cutting base 407 according to the designed position.

[0087] The retractable assembly structure of the positioning pin 405 and the pre-pressing plate 406 is assembled through a pre-tightened spring. When descending, it cooperates with the spring strip 60 before the movable cutter 404, and is in a compressed state during the continuous downward process of the cutting die frame 402, so that the movable cutter 404 can cooperate with the fixed cutter on the cutting base 407.

[0088] As described above, the feeding mechanism 30 and the cutting mechanism 40 are arranged on the workbench 10 along the longitudinal conveying direction of the reed strip 60 in an upstream and downstream relationship. The feeding mechanism 30 takes the arrangement position of a single pre-cut reed 602 on the reed strip 60 as a single pushing stroke, and pushes the pre-cut reeds 602 on the reed strip 60 forward one by one during the reciprocating motion, and the stroke signal of each pushing is fed back to the control cabinet 50; under the command of the control cabinet 50, the cutting mechanism 40 is linked with the feeding mechanism 30 with the single pushing stroke signal of the feeding mechanism 30 to cut and separate the current pre-cut reed 602 pushed to the cutting position.

[0089] See also Figure 1 and Figure 2 As shown, in order to facilitate centralized and standardized collection of reeds, a reed collection box is arranged at the workbench 10 corresponding to the cutting mechanism 40. The opening position of the reed collection box corresponds to the cutting position of the cutting mechanism 40 on the workbench 10. The aforementioned cutting position refers to the position where the reeds fall after being cut.

[0090] The reset of the push cylinder of the above-mentioned feeding mechanism is controlled by the control cabinet in a delayed reset mode.

[0091] The resetting of the cutting cylinder of the above-mentioned cutting mechanism is controlled by the control cabinet in a delayed resetting mode.

[0092] The locking structure is preferably a disc-shaped bolt which is easy to operate.

[0093] Example 2 The other contents of this embodiment are the same as those of Embodiment 1, except that: The unloading mechanism on the workbench is removed, that is, there are only the feeding mechanism and the cutting mechanism on the workbench.

[0094] After the discharge mechanism is removed, the materials are discharged manually.

[0095] Of course, manual feeding requires additional workers, and the effect is not as good as the above-mentioned embodiment 1, but it is still a traditional cutting method.

[0096] Example 3 The other contents of this embodiment are the same as those of Embodiment 1, except that: The connecting rod connected to the non-return pressure plate is fixed on the top of the feeding base through a bracket, and the upper part of the tensioning spring 1 abuts against the supporting bracket of the connecting rod, and the lower part abuts against the non-return pressure plate.

[0097] Although this embodiment can achieve the technical purpose of the present invention, it will relatively increase the molding structure of the feeding mechanism.

[0098] Example 4 The other contents of this embodiment are the same as those of Embodiment 1, except that: The workbench is removed, and the material discharge mechanism, the material feeding mechanism and the cutting mechanism are arranged in relatively fixed positions, and a waste material collection box and a reed collection box are formed at the cutting mechanism.

[0099] Although this embodiment can achieve the technical purpose of the present invention, the management and assembly of various mechanisms and components are relatively complicated.

[0100] Example 5 The other contents of this embodiment are the same as those of Embodiment 1, except that: A travel switch is added to the cutting mechanism, which senses the in-place cutting state of the cutting mechanism and feeds back a signal to the control cabinet, which controls the push cylinder of the feeding mechanism to reset according to the signal; A travel switch is added to the feeding mechanism, which senses the reset state of the push cylinder of the feeding mechanism and feeds back a signal to the control cabinet, which controls the reset of the cutting cylinder of the cutting mechanism according to the signal.

[0101] Although this embodiment can achieve the technical purpose of the present invention, the overall molding structure and control logic are relatively complicated.

[0102] Example 6 The other contents of this embodiment are the same as those of Embodiment 1, except that: Remove the non-return release eccentric wheel on the feeding mechanism, and release the non-return pressure plate by manual lifting operation.

[0103] Although this embodiment can achieve the technical purpose of the present invention, it is relatively cumbersome to operate.

[0104] Example 7 The other contents of this embodiment are the same as those of Embodiment 1, except that: The connection structure of the unloading frame and the material tray bracket, the unloading tension detection sensor, and the unloading slack detection sensor of the unloading mechanism is formed as a non-adjustable fixed structure; And / or, the connection structure between the tray support frame of the tray bracket and the rotating shaft and the tray shaft is formed as a non-adjustable fixed structure.

[0105] Although this embodiment can achieve the technical purpose of the present invention, its operational flexibility and versatility are obviously inferior to those of Embodiment 1.

[0106] Example 8 The other contents of this embodiment are the same as those of Embodiment 1, except that: The push base of the feeding mechanism is directly slidably assembled with the slide rail, and the lateral position of the push base relative to the slide rail is not adjustable.

[0107] Although this embodiment can achieve the technical purpose of the present invention, its versatility of operation is obviously not as good as that of embodiment 1.

[0108] Example 9 The other contents of this embodiment are the same as those of Embodiment 1, except that: Remove the positioning pins in the cutting mechanism.

[0109] Of course, the corresponding function will be eliminated.

[0110] Example 10 The other contents of this embodiment are the same as those of Embodiment 1, except that: Remove the pre-press plate in the cutting mechanism.

[0111] Of course, the corresponding function will be eliminated.

[0112] Embodiment 11 The other contents of this embodiment are the same as those of Embodiment 1, except that: The material pushing base of the feeding mechanism is assembled on the side of the material strip groove, and the material pushing claw connected to the material pushing base extends from the side and contacts the base material side of the spring sheet material strip; Correspondingly, the positioning holes on the spring strip are removed, and an inwardly concave notch is formed on the edge of the base material of the spring strip to achieve the technical purpose of inserting the pusher claw.

[0113] Although this embodiment can achieve the technical purpose of the present invention to a certain extent, its reliability is poor.

[0114] Example 12 The other contents of this embodiment are the same as those of Embodiment 1, except that: Remove the positioning holes on the reed strip; The pushing claw of the feeding mechanism uses a certain stamping cut on the spring strip as a pushing force point.

[0115] Although this embodiment can achieve the technical purpose of the present invention, it will cause certain damage to the structure of the pre-cut spring sheet and is basically not adopted.

[0116] Example 13 The other contents of this embodiment are the same as those of Embodiment 1, except that: According to the use requirements, the cut spring strip is cut and separated by forming a whole unit with multiple pre-cut springs, that is, the cut structure has multiple (for example, three) springs, which makes the spring strip form a number of cutting and separation positions that are sequentially predetermined along the longitudinal direction in a grouped manner, and each cutting and separation position is basically located at the middle position of two adjacent pre-cut spring groups; each pre-cut spring group that is separated and disconnected has a base material at a corresponding position, and the base material is pulled apart when the spring is installed on the corresponding housing (base). Based on this structural feature, in order to adapt to the pushing action of the feeding mechanism, a positioning hole connecting the two sides in the thickness direction is opened on the base material corresponding to the arrangement position of each pre-cut spring group, that is, each positioning hole corresponds to the pushing stroke of a predetermined cutting and separation position.

[0117] Embodiment 14 The other contents of this embodiment are the same as those of Embodiment 1, except that: According to the use requirements, the cut spring strip is cut and separated by forming a whole unit with multiple pre-cut spring strips, that is, the cut structure has multiple (for example, three) spring strips, so that a plurality of cutting and separation positions are formed in a grouped manner along the longitudinal direction in sequence on the spring strip, and each cutting and separation position is basically located at the middle position of two adjacent groups of pre-cut spring strips; During the advancement process of each cutting and separation position, the feeding mechanism advances back and forth in batches corresponding to the positioning holes at each pre-cut spring piece, and each advancement feeds back a stroke signal to the control cabinet, which triggers the action of the cutting mechanism according to the set superimposed stroke signal. In other words, assuming that there are three pre-cut spring pieces on the pre-cut spring piece group to be cut, then since the advancement of the feeding mechanism on the same pre-cut spring piece group is based on the positioning holes corresponding to the three pre-cut spring pieces as the force points, the feeding mechanism has to push three times in succession to make the cutting and separation position of the current pre-cut spring piece group at the cutting position of the cutting mechanism, and the control cabinet controls the action of the cutting mechanism according to the superposition or interval of the three push stroke signals.

[0118] Embodiment 15 The other contents of this embodiment are the same as those of Embodiment 1, except that: According to the use requirements, the cut spring strip is cut and separated by forming a whole unit with multiple pre-cut spring strips, that is, the cut structure has multiple (for example, three) spring strips, so that a plurality of cutting and separation positions are formed in a grouped manner along the longitudinal direction in sequence on the spring strip, and each cutting and separation position is basically located at the middle position of two adjacent groups of pre-cut spring strips; During the advancement process of each cutting and separation position, the feeding mechanism retreats over the other positioning holes on the same pre-cut spring sheet group, and only one of the positioning holes is selected as the pushing force point, and it is pushed into place at one time, which is the same as Example 14 (compared with Example 14, each pre-cut spring sheet of the same pre-cut spring sheet group still has its own corresponding positioning hole).

[0119] The above embodiments are only used to illustrate the present invention, but not to limit it.

[0120] Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the above embodiments or make equivalent substitutions for some of the technical features therein; and these modifications or substitutions do not deviate the essence of the corresponding technical solutions from the spirit and scope of the present invention.

Claims

1. An automatic cutting device for a spring strip, the spring strip (60) comprising a base material (601) and a plurality of pre-cut spring strips (602) arranged in parallel in the longitudinal direction of the base material (601), the spring strip (60) being provided with a plurality of cutting and separation positions sequentially predetermined along the longitudinal direction; Features: The automatic cutting device comprises a feeding mechanism (30) and a cutting mechanism (40) arranged in sequence along the longitudinal conveying direction of the spring sheet material strip (60), and a control cabinet (50) for controlling the actions of the feeding mechanism (30) and the cutting mechanism (40); The spring strip (60) is inserted into the pushing channel of the feeding mechanism (30); The feeding mechanism (30) pushes the spring strip (60) forward sequentially one by one during the reciprocating motion, and a stroke signal of each push is fed back to the control cabinet (50); The cutting mechanism (40) receives instructions from the control cabinet (50) and works in conjunction with the feeding mechanism (30) with a stroke signal corresponding to each cutting and separation position to separate and cut the spring strip (60) pushed to the cutting position at the current cutting and separation position.

2. The automatic cutting device for spring strip according to claim 1, characterized in that: The feeding mechanism (30) comprises a feeding base (301), a slide rail (308), a pushing base (309), a pushing claw (3010) and a pushing cylinder (3013) arranged on the feeding base (301); The feeding base (301) is formed with a pushing channel for passing the spring sheet material strip (60); The slide rail (308) and the pushing cylinder (3013) are fixed on the feeding base (301) along the pushing channel and staggered from the pushing channel; The pusher base (309) is slidably assembled on the slide rail (308) through a slider and is staggered with the push channel. The pusher base (309) is connected to the pusher cylinder (3013), and the pusher cylinder (3013) drives the pusher base (309) to move forward / backward on the slide rail (308); The pusher claw (3010) is hinged on the pusher base (309), the pusher claw (3010) has a tooth (3015) that can be inserted into the push channel, and a tensioning spring (3012) is arranged between the pusher claw (3010) and the pusher base (309) to pre-push the tooth (3015) of the pusher claw (3010) into the push channel; The push base (309) moves backward, driving the push teeth (3015) of the push claw (3010) to switch the forward and backward push fulcrum positions on the spring strip (60); The forward-moving material pushing base (309) drives the material pushing claw (3010) to push the spring sheet material strip (60) forward.

3. The automatic cutting device for spring strip according to claim 2, characterized in that: The pushing base (309) is arranged above the pushing channel; Correspondingly, the material pushing claw (3010) is an L-shaped structure; The pusher claw (3010) is hinged on the pusher base (309), the tooth (3015) is located below the pusher base (309), the front side of the tooth (3015) is a straight edge structure, and the rear side is a bevel edge structure, and there is a movable gap between the bottom of the pusher base (309) and the pusher claw (3010) for the pusher claw (3010) to flip over; The second tension spring (3012) is arranged at the movable gap between the material pushing base (309) and the material pushing claw (3010); The movable gap enables the pushing tooth (3015) of the pushing claw (3010) to withdraw from the corresponding pushing fulcrum position on the spring strip (60) when turning over.

4. The automatic cutting device for spring strip according to claim 2 or 3, characterized in that: The pusher base (309) is provided with a waist-shaped hole in the transverse direction corresponding to the push channel; The pusher base (309) is connected to a sliding block on the slide rail (308) through a waist-shaped hole, and the lateral position of the pusher base (309) relative to the slide rail (308) is adjustable.

5. The automatic cutting device for spring strip according to claim 2, characterized in that: The feeding mechanism (30) further comprises a non-return pressure plate (304) located upstream of the pushing base (309) and extending into the pushing channel; The non-return pressure plate (304) is connected to a tensioning spring 1 (306) for driving the non-return pressure plate (304) to press against the spring strip (60) in the pushing channel; The non-return pressure plate (304) presses against the spring strip (60) in the pushing channel in a surface contact manner.

6. The automatic cutting device for spring strip according to claim 5, characterized in that: A non-return release structure is connected to the feeding base (301) at the non-return pressure plate (304) and is capable of pushing the non-return pressure plate (304) to lift and release the spring strip (60) in the pushing channel.

7. The automatic cutting device for spring strip according to claim 2, characterized in that: The top of the feeding base (301) has a material belt groove (302) formed with an inner concave structure and constituting a pushing channel; The strip groove (302) protrudes upwards near the longitudinal edge of the material pushing claw (3010), forming a reference guide edge for the forward movement of the inserted spring strip (60); The spring strip (60) inserted into the strip groove (302) moves forward along the reference guide edge of the strip groove (302).

8. The automatic cutting device for spring strip according to claim 7, characterized in that: The top of the feeding base (301) also has a recess (3016) which forms a pushing channel and is formed in a concave structure; The clearance groove (3016) is arranged in parallel with the material belt groove (302) and is lower than the material belt groove (302); The straight portion of the spring strip (60) inserted into the push channel moves forward along the reference guide edge of the strip groove (302), and the curved portion extends into the clearance groove (3016).

9. The automatic cutting device for spring strip according to claim 1, 2, 7 or 8, characterized in that: The cutting and separation position on the reed strip (60) is located between adjacent pre-cut reeds (602); A positioning hole (603) or a positioning groove is provided on the base material (601) of the spring sheet material strip (60) corresponding to each pre-cut spring sheet (602), and the positioning hole (603) or the positioning groove can accommodate the teeth (3015) of the pushing claw (3010); The spring strip (60) forms a pushing fulcrum for cooperating with the pushing claw (3010) with a positioning hole (603) or a positioning groove on the base material (601).

10. The automatic cutting device for spring strip according to claim 1, 2, 7 or 8, characterized in that: The cutting and separation position on the reed strip (60) is located between adjacent pre-cut reed groups, and each pre-cut reed group has at least two pre-cut reeds (602) arranged in parallel; A positioning hole or a positioning groove is provided on the base material (601) of the reed strip (60) corresponding to each pre-cut reed (602) or each pre-cut reed group, and the positioning hole or the positioning groove can accommodate the teeth (3015) of the pusher claw (3010); The spring strip (60) forms a pushing fulcrum for cooperating with the pushing claw (3010) with a positioning hole (603) or a positioning groove on the base material (601).

11. The automatic cutting device for spring strip according to claim 1, characterized in that: The cutting mechanism (40) comprises a cutting base (407), a cutting support (401), and a cutting die frame (402) and a cutting cylinder (403) mounted on the cutting support (401); The cutting base (407) is arranged at the downstream end of the feeding mechanism (20) and is sequentially connected to the pushing channel, and the cutting base (407) has a fixed cutter that cooperates with the movable cutter (404) on the cutting die frame (402); The cutting support (401) is used to support the cutting cylinder (403) and to assemble the cutting die frame (402) with a guide structure; The cutting die frame (402) is connected to the cutting cylinder (403) and is located above the cutting base (407). The cutting die frame (402) is driven by the cutting cylinder (403) to move upward / downward in the cutting support (401). The upward movement of the cutting die frame (402) is away from the cutting base (407), and the downward movement of the cutting die frame (402) is close to the cutting base (407). The cutting die frame (402) is equipped with a movable cutter (404) for cutting the reed strip (60). The downwardly moving cutting die frame (402) drives the movable cutter (404) to approach the cutting base (407) and cooperates with the fixed cutter to cut the reed strip (60) on the cutting base (407) at the designed cutting and separation position, so that the current pre-cut reed (601) / pre-cut reed group on the reed strip (60) is cut and separated.

12. The automatic cutting device for spring strip according to claim 11, characterized in that: The cutting die frame (402) is equipped with positioning pins (405) and / or pre-pressing plates (406) in a telescopic structure; The initial position of the positioning pin (405) is lower than the movable cutter (404), and the downward cutting die frame (402) drives the positioning pin (405) to approach the cutting base (407), and approaches the spring strip (60) on the cutting base (407) before the movable cutter (404), and positions the spring strip (60) on the cutting base (407) at the designed position and staggers the cutting and separation position; The initial position of the pre-pressing plate (406) is lower than the movable cutter (404), and the downwardly moving cutting die frame (402) drives the pre-pressing plate (406) to approach the cutting base (407), and approaches the spring strip (60) on the cutting base (407) before the movable cutter (404), and presses the spring strip (60) on the cutting base (407) downward at a designed position, and staggers the cutting and separation position.

13. The automatic cutting device for spring strip according to claim 1, characterized in that: The automatic cutting device also has a material discharge mechanism (20); The material discharge mechanism (20) comprises a material discharge frame (201) and a material tray support (202) arranged on the material discharge frame (201); The tray support (202) is equipped with a material discharge motor (207) and a material tray support frame (204) driven to rotate by the material discharge motor (207), and the action of the material discharge motor (207) is controlled by instructions from the control cabinet (50); The tray carrier (204) is provided with a tray shaft (205), and the reed strip roll is mounted on the tray shaft (205).

14. The automatic cutting device for spring strip according to claim 13, characterized in that: The unloading mechanism (20) further comprises an unloading tension detection sensor (208) and an unloading slack detection sensor (209) arranged on the unloading frame (201); The unloading tension detection sensor (208) and the unloading slack detection sensor (209) are arranged at intervals on the unloading frame (201), and a passage for the spring strip (60) is formed between the unloading tension detection sensor (208) and the unloading slack detection sensor (209); The lead-out reed strip (60) of the reed strip roll mounted on the tray carrier (204) is installed in the feeding mechanism (30) through a passage between the unwinding tension detection sensor (208) and the unwinding slack detection sensor (209), the unwinding tension detection sensor (208) being located on the tensioning direction side of the passing reed strip (60), and the unwinding slack detection sensor (209) being located on the slack direction side of the passing reed strip (60); When the unloading tension detection sensor (208) detects the spring strip (60), a signal is fed back to the control cabinet (50), and the control cabinet (50) controls the unloading motor (207) to start unloading based on the signal from the unloading tension detection sensor (208); When the unloading slack detection sensor (209) detects the reed strip (60), a signal is fed back to the control cabinet (50), and the control cabinet (50) controls the unloading motor (207) to stop unloading based on the signal from the unloading slack detection sensor (209).

15. The automatic cutting device for spring strip according to claim 13, characterized in that: The tray support frame (204) is provided with a waist-shaped hole, and the tray support frame (204) is connected to the tray shaft (205) via the waist-shaped hole; the position of the tray shaft (205) on the tray support frame (204) is adjustable.

16. The automatic cutting device for spring strip according to claim 13 or 15, characterized in that: The material tray support frame (204) is connected to the material discharge motor (207) via a rotating shaft (203), and the material tray support frame (204) is connected to the rotating shaft (203) via a loose linear adjustment structure; The rotating shaft (203) and the material tray shaft (205) are spaced apart from each other on the material tray supporting frame (204); A material tray baffle (206) is connected to the rotating shaft (203), and the material tray baffle (206) and the material tray support frame (204) are spaced apart on the rotating shaft (203). The material tray baffle (206) is used to block and limit the spring strip roll assembled on the material tray support frame (204).

17. The automatic cutting device for spring strip according to claim 1 or 13, characterized in that: The automatic cutting device also has a workbench (10) that supports each component mechanism and arranges each component mechanism in a relatively fixed position; The workbench (10) is provided with a reed collection box at a location corresponding to the cutting mechanism (40); The opening position of the reed collecting box corresponds to the cutting position of the cutting mechanism (40).

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