Assembling device and assembling method for crossbow arm and pulley of composite bow

Abstract

The invention discloses a composite bow crossbow arm and pulley assembling device which comprises a rack and a workbench on the rack, a bow arm moving mechanism is mounted on the workbench, two bow arms are clamped on the bow arm moving mechanism, and the bow arms can rotate and linearly move; the pulley mounting mechanism is used for clamping the pulley in the pulley trough through a clamping jaw mounted on a clamping jaw cylinder, and the clamping jaw cylinder can move in the horizontal and vertical directions; according to the pulley shaft mounting mechanism, a pulley shaft bin located below the supporting plate corresponds to a circular groove for containing a pulley shaft, and the axial direction of the circular groove is the same as the pushing direction of the forward pushing air cylinder; the auxiliary string wheel mounting mechanism is used for conveying an auxiliary string wheel to an auxiliary string wheel trough on an auxiliary string wheel material plate through a vibration disc, and the auxiliary string wheel is pushed to move downwards after being matched with a forward cylinder and a pressing cylinder; and the clamp spring mounting mechanism can rotate and linearly move through calipers and is used in cooperation with the clamp spring clamped on the clamping strip in a clamping mode. The device is compact in structural design, meets the automatic assembly requirement and is high in working efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of improved design of a pulley assembly mechanism of a compound crossbow, and in particular to an assembly device and an assembly method of a composite crossbow bow arm and a pulley. Background Art

[0002] The pulley arm structure of the compound bow and the compound crossbow is the same, mainly including two bow arms, pulleys, pulley shafts, two secondary string wheels and retaining springs. The installation structure is mainly to install pulleys in the two bow arms and pass them through the pulley shafts. Secondary string wheels are installed on the outside of the two bow arms respectively. The secondary string wheels are used to install secondary strings. Finally, retaining springs are clamped on both ends of the pulley shaft to complete the packaging. At present, the assembly of the whole set of structures is mainly completed manually. First, a retaining spring is installed on the pulley shaft manually, and then the second person installs the above parts in order, installs the second retaining spring on the other side and completes the packaging. The installation takes a long time. Since the pulley, secondary string wheel and other structures are directional, it is easy to install incorrectly.

[0003] In order to solve one of the above problems, the present application provides an assembly device and an assembly method for a composite crossbow arm and a pulley. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art, and to propose an assembly device and an assembly method for a composite crossbow bow arm and a pulley, which has a compact structural design, meets the requirements of automated assembly, and has high work efficiency.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: a method for assembling a composite crossbow arm and a pulley, comprising the following steps:

[0006] S1. Clamp the bow arms. The two bow arms are fixed on the fixture plate respectively. The fixture plate is provided with a limit assembly. The fixture plate can rotate and move linearly.

[0007] S2. Install the pulley and the pulley shaft, the fixture plate moves forward in a straight line and maintains a horizontal direction, the pulley is clamped from the pulley trough to between the two bow arms, the pulley shaft is dropped from the pulley shaft silo and pushed to pass through the two bow arms and the pulley at the same time, and the limit assembly limits and blocks the two ends of the pulley shaft respectively;

[0008] S3. Install the secondary chord wheel and the retaining spring, the fixture plate moves forward in a straight line and flips 90 degrees, the limit assembly is removed from the upper end of the pulley shaft, the secondary chord wheel transports the blank from the vibration plate and is pressed down onto the pulley shaft, the retaining spring is taken out from the clamping strip and clamped onto the pulley shaft, the fixture plate flips 180 degrees, repeats the installation operation of the secondary chord wheel and the retaining spring, the fixture plate moves linearly to reset, and the assembled pulley bow arm structure is taken out.

[0009] In step S1, limit assemblies are respectively installed on both sides of the clamp plate, and the limit assemblies include a blocking cylinder and a blocking block. The blocking cylinder pushes the blocking block to reciprocate along the length direction of the bow arm. The clamp plate is fixed on a mounting rod driven by the first motor after deceleration. The first motor is installed on a first linear motion module, and the first linear motion module is set on the workbench of the frame.

[0010] In step S2, the pulley trough is tilted above the workbench of the frame, a support plate is suspended on the workbench, a lifting cylinder is installed on the support plate, the lifting cylinder is connected to the horizontal cylinder below, the horizontal cylinder is connected to the clamping cylinder, and the clamping cylinder is provided with a claw that can clamp the pulley; a circular groove for accommodating the pulley shaft is provided below the pulley shaft silo, the circular groove is provided on the bottom plate, the bottom plate is located on the workbench and is installed with a forward thrust cylinder, and the telescopic shaft of the forward thrust cylinder reciprocates along the axial direction of the circular groove.

[0011] In step S3, the vibration plate is arranged above the workbench of the frame, and the vibration plate transports the secondary chord wheel to the secondary chord wheel material groove processed on the secondary chord wheel material plate through the track. The secondary chord wheel material groove is arranged in the horizontal direction and is processed with a mounting hole that passes through the upper and lower parts. A forward cylinder and a downward pressure cylinder are installed on the secondary chord wheel material plate. The telescopic shaft of the forward cylinder reciprocates along the length direction of the secondary chord wheel material groove, and the telescopic shaft of the downward pressure cylinder reciprocates along the axial direction of the mounting hole; the clamping strip is vertically fixed on the workbench, and a second linear motion module is fixed on the workbench. A second motor is installed on the second linear motion module. A caliper is horizontally arranged on the rotating shaft driven by the second motor after deceleration, and the caliper cooperates with the retaining spring.

[0012] A composite crossbow bow arm and pulley assembly device, comprising a frame and a workbench on the frame, a bow arm moving mechanism is installed on the workbench, the bow arm moving mechanism comprises a fixture plate, two bow arms are clamped on the fixture plate, blocking cylinders are respectively provided on both sides of the fixture plate, and blocking blocks connected to the blocking cylinders reciprocate parallel to the length direction of the bow arm, the fixture plate is driven to rotate by a first motor after deceleration, and the first motor is driven to reciprocate by a first linear motion module;

[0013] The pulley installation mechanism comprises an inclined pulley trough and a horizontally arranged clamping claw, the clamping claw is installed on the clamping claw cylinder for clamping the pulley in the pulley trough, the clamping claw cylinder is connected to the horizontal cylinder, the horizontal cylinder is connected to the lifting cylinder, the lifting cylinder is installed on the support plate, and the support plate and the pulley trough are supported by multiple fixed shafts;

[0014] A pulley shaft mounting mechanism, wherein the pulley shaft mounting mechanism is arranged side by side with the pulley mounting mechanism and comprises a pulley shaft bin located below the support plate, the pulley shaft bin is suspended on the bottom plate, a circular groove for accommodating the pulley shaft is processed on the bottom plate, a forward thrust cylinder is installed on the side of the bottom plate, and the telescopic shaft of the forward thrust cylinder reciprocates along the axial direction of the circular groove;

[0015] A secondary chord wheel installation mechanism, the secondary chord wheel installation mechanism includes a vibration plate and a secondary chord wheel material plate, a secondary chord wheel material groove in a horizontal direction is processed on the secondary chord wheel material plate, the vibration plate conveys the secondary chord wheel to the secondary chord wheel material groove, a mounting hole penetrating up and down is processed in the secondary chord wheel material groove, a forward cylinder and a downward cylinder are installed on the secondary chord wheel material plate, the telescopic shaft of the forward cylinder reciprocates along the length direction of the secondary chord wheel material groove, and the telescopic shaft of the downward cylinder reciprocates along the axial direction of the mounting hole;

[0016] The retaining spring installation mechanism includes a clamping strip and a caliper which are arranged relatively to each other, a plurality of retaining springs are clamped on the retaining strip, the caliper is fixed on a rotatable shaft, the shaft is installed on the second linear motion module, and the caliper is used in conjunction with the retaining spring clamping.

[0017] Furthermore, as described above, a long groove is processed on the fixture plate, in which the bow arm is embedded, a guide rod is movably inserted in the clamp plate, the guide rod is connected to the blocking block, the first motor is installed on the first fixed plate and drives the mounting rod after deceleration, the mounting rod is fixedly connected to the fixture plate, the first linear motion module is arranged on the workbench and consists of a first screw mechanism driven by the first motor after deceleration, and the first fixed plate is installed on the first nut seat of the first screw mechanism.

[0018] Furthermore, a limit screw is provided at the lower end of the pulley trough as described above to prevent the pulley from sliding out, a fixed shaft is passed through the pulley trough, a limit ring is mounted on the fixed shaft to support the pulley trough and the fixed shaft is fixed on the workbench, the clamping cylinder and the horizontal cylinder are both installed on the second fixed plate, the second fixed plate is respectively connected to the lifting cylinder and the anti-rotation rod, the anti-rotation rod cooperates with the shaft sleeve hole on the support plate, and the support plate is supported by multiple fixed shafts.

[0019] Furthermore, the pulley shaft silo as described above is fixed to the base plate through multiple support rods. The base plate is located on the workbench and is processed with multiple fixing holes. The fixing holes match the fixed shafts. A third fixing plate is provided on the side of the base plate, and a forward thrust cylinder is installed on the third fixing plate.

[0020] Furthermore, the vibration plate as described above is mounted on a fifth fixed plate, the fifth fixed plate is supported by a fixed rod, the secondary chord wheel material plate is fixed on a support column, the fixed rod and the support column are both mounted on a workbench, the vibration plate transports the blanks to the slot through a track, the slot is located on the secondary chord wheel material slot, the forward air cylinder is fixed on the side of the secondary chord wheel material plate, the downward pressure cylinder is mounted on the fourth fixed plate, and the fourth fixed plate is mounted on the secondary chord wheel material plate.

[0021] Furthermore, the clamping strip as described above is vertically fixed on the sixth fixed plate, the rotating shaft is driven after being decelerated by the second motor, the second motor is fixed on the second mounting plate, the second linear motion module is arranged on the support block of the workbench and is composed of a second screw mechanism driven after being decelerated by the second motor, the second fixed plate is installed on the second nut seat of the second screw mechanism, and the sixth fixed plate is installed on the mounting plate of the second motor.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention uses machine automated assembly operations to replace manual installation of crossbows and pulley assemblies, which can effectively solve the problem of reverse pulley installation in the production process, while saving labor, being safe and reliable, and different fixture plates can be replaced to adapt to different models of crossbow installation pulley assemblies. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the whole machine of the present invention;

[0024] Figure 2 It is a structural schematic diagram of the bow arm moving mechanism of the present invention;

[0025] Figure 3 It is a structural schematic diagram of the pulley installation mechanism of the present invention;

[0026] Figure 4 It is a structural schematic diagram of the pulley shaft installation mechanism of the present invention;

[0027] Figure 5 It is a structural schematic diagram of the secondary chord wheel mounting mechanism of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the retaining spring installation mechanism of the present invention;

[0029] Figure 7 It is a schematic diagram of the pulley bow arm structure of the present invention;

[0030] Figure 8 for Figure 7 Explosion diagram.

[0031] In the figure: 1, bow arm; 2, pulley; 3, pulley shaft; 4, secondary string wheel; 5, retaining spring; 6, workbench; 7, frame; 10, bow arm moving mechanism; 101, first linear motion module; 102, first mounting plate; 103, first motor; 105, mounting rod; 106, fixture plate; 107, long groove; 108, blocking cylinder; 109, guide rod; 110, blocking block; 20, pulley mounting mechanism; 201, fixed shaft; 202, support plate; 203, lifting cylinder; 204, first fixed plate; 205, anti-rotation rod; 206, shaft sleeve; 208, horizontal cylinder; 209, second fixed plate; 210, clamping claw cylinder; 211, clamping claw; 212, limiting screw; 213, pulley trough; 214, limiting ring; 30 , pulley shaft mounting mechanism; 301, base; 302, third fixed plate; 303, forward push cylinder; 304, support rod; 305, pulley shaft silo; 306, circular groove; 307, fixing hole; 40, secondary chord wheel mounting mechanism; 401, fixing rod; 402, support column; 403, secondary chord wheel plate; 404, fourth fixed plate; 405, forward cylinder; 406, notch; 407, downward pressure cylinder; 408, track; 409, fifth fixed plate; 410, vibration plate; 411, secondary chord wheel trough; 50, retaining spring mounting mechanism; 501, support block; 502, second linear motion module; 503, second mounting plate; 504, second motor; 505, rotating shaft; 506, caliper; 507, sixth fixed plate; 508, retaining strip. DETAILED DESCRIPTION

[0032] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected", "set", etc. should be understood in a broad sense. For example, when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can be an intermediate element. When an element is considered to be "installed on" another element, it can be directly installed on the other element or there can be an intermediate element. When an element is considered to be "connected" to another element, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be internal communication between the two elements.

[0034] For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Embodiment 1

[0037] Reference Figure 1-6 As shown, an assembly device for a composite crossbow limb and a pulley of the present invention comprises a frame 7 and a workbench 6 on the frame 7, and a limb moving mechanism 10, a pulley mounting mechanism 20, a pulley shaft mounting mechanism 30, a secondary string wheel mounting mechanism 40 and a spring mounting mechanism 50 are mounted on the workbench 6. The limb moving mechanism 1 is used to place the limb 1 and drive the limb 1 forward to install other parts, the pulley mounting mechanism 20 is used to remove the pulley 2 and place the pulley 2 at a designated position, and then the pulley shaft mounting mechanism 30 inserts the pulley shaft 3 into the limb 1 and the pulley 2, and the secondary string wheel mounting mechanism 40 is used to install the secondary string wheel 4 on the pulley shaft 3 on both sides of the limb 1, and then the spring mounting mechanism 50 completes the packaging of the spring 5.

[0038] Specifically, the bow arm moving mechanism 10 includes a fixture plate 106, on which two bow arms 1 are clamped, and blocking cylinders 108 are respectively provided on both sides of the fixture plate 106. The blocking blocks 110 connected to the blocking cylinders 108 reciprocate parallel to the length direction of the bow arm 1. The fixture plate 106 is driven to rotate by the first motor 103 after deceleration, and the first motor 103 is driven to reciprocate by the first linear motion module 101.

[0039] The pulley installation mechanism 20 includes an inclined pulley trough 213 and a horizontally arranged claw 211, the claw 211 is installed on the clamping cylinder 210 for clamping the pulley 2 in the pulley trough 213, the clamping cylinder 210 is connected to the horizontal cylinder 208, the horizontal cylinder 208 is connected to the lifting cylinder 203, the lifting cylinder 203 is installed on the support plate 202, and the support plate 202 and the pulley trough 213 are supported by multiple fixed shafts 201;

[0040] The pulley shaft mounting mechanism 30 is arranged side by side with the pulley mounting mechanism 20 and includes a pulley shaft bin 305 located below the support plate 202. The pulley shaft bin 305 is suspended on the bottom plate, and a circular groove 306 for accommodating the pulley shaft 3 is processed on the bottom plate. A forward thrust cylinder 303 is installed on the side of the bottom plate, and the telescopic shaft of the forward thrust cylinder 303 reciprocates along the axial direction of the circular groove 306;

[0041] A secondary chord wheel mounting mechanism 40, the secondary chord wheel mounting mechanism 40 comprises a vibration plate 410 and a secondary chord wheel material plate 403, a secondary chord wheel material groove 411 in a horizontal direction is processed on the secondary chord wheel material plate 403, the vibration plate 410 conveys the secondary chord wheel 4 to the secondary chord wheel material groove 411, a mounting hole penetrating up and down is processed in the secondary chord wheel material groove 411, a forward cylinder 405 and a downward cylinder 407 are installed on the secondary chord wheel material plate 403, the telescopic shaft of the forward cylinder 405 reciprocates along the length direction of the secondary chord wheel material groove 411, and the telescopic shaft of the downward cylinder 407 reciprocates along the axial direction of the mounting hole;

[0042] The retaining spring installation mechanism 50 includes a clamping strip 508 and a caliper 506 which are arranged relatively to each other. A plurality of retaining springs 5 ​​are clamped on the retaining strip 508. The caliper 506 is fixed on a rotatable shaft 505. The shaft 505 is installed on the second linear motion module 502. The caliper 506 is clamped and used in cooperation with the retaining spring 5.

[0043] The assembly process of the bow arm pulley structure of the present application is as follows: first, a worker installs the bow arm 1, fixes the fixture plate 106, and starts the machine; after the machine is started, the pulley installation mechanism 20 is operated to remove the pulley 2 to the set position, and the pulley shaft installation mechanism 30 pushes the pulley shaft 3 into the shaft hole of the bow arm 1 and the pulley 2 for assembly, and the blocking cylinder 108 on the side away from the pulley shaft installation mechanism 30 is operated to control the installation position of the pulley shaft 3, and the pulley installation mechanism 20 is reset, and the pulley shaft installation mechanism 30 is reset; then the bow arm 1 is continued to be driven forward by the first linear motion module 101, and then turned 90 degrees. After the turning, there is a blocking cylinder 108 at the bottom of the pulley shaft 3, and the pulley shaft 3 cannot escape from the shaft hole; then the secondary string wheel installation mechanism 40 and the retaining spring installation mechanism 50 are installed in turn. The secondary string wheel 4 and the retaining spring 5 are installed to complete the installation of one side of the bow arm 1, and then the above steps are repeated to complete the installation of the other side of the bow arm 1. Finally, the bow arm 1 is retracted and manually removed by a person to complete a cycle of operation.

[0044] Embodiment 2

[0045] Reference Figure 1-6 As shown, based on the technical solution of embodiment 1, an assembly device of a composite crossbow bow arm and a pulley is provided, as shown in FIG. Figure 2 As shown, the fixture plate 106 is processed with a long groove 107, and the long groove 107 is embedded in the bow arm 1. A guide rod 109 is movably inserted in the clamp plate. The guide rod 109 is connected to the blocking block 110 to play a guiding and anti-rotation role. The blocking block 110 reciprocates linearly to prevent the pulley shaft 3 from escaping from the axial hole of the pulley 2 or the bow arm 1 during the rotation of the fixture plate 106. The first motor 103 is installed on the first fixed plate 204 and the output shaft after the speed reduction is connected to the mounting rod 105. The mounting rod 105 is fixedly connected to the fixture plate 106. The first linear motion module 101 is set on the workbench 6 and consists of a first screw mechanism driven by the first motor after the speed reduction. The first fixed plate 204 is installed on the first nut seat of the first screw mechanism. The first linear motion module 101 is a well-known device in the art and will not be described in detail here.

[0046] like Figure 3 As shown, the pulley 2 groove is used to store the pulley 2, and the lower end of the pulley trough 213 is provided with a limit screw 212 to prevent the pulley 2 from sliding out, so as to prevent the pulley 2 from directly escaping from the inclined pulley trough 213. The pulley trough 213 is penetrated by a fixed shaft 201, and a limit ring 214 is mounted on the fixed shaft 201 to support the pulley trough 213 and the fixed shaft 201 is fixed on the workbench 6. The clamping cylinder 210 and the horizontal cylinder 208 are both installed on the second fixed plate 209, and the second fixed plate 209 is respectively connected to the lifting cylinder 203 and the anti-rotation rod 205, and the anti-rotation rod 205 cooperates with the shaft sleeve 206 hole shaft on the support plate 202 to prevent the horizontal cylinder 208 from rotating during operation, and the support plate 202 is supported by multiple fixed shafts 201.

[0047] like Figure 4 As shown, the pulley shaft bin 305 is used to store the pulley shaft 3, and a single pulley shaft 3 can be placed in the circular groove 306 and pushed into the shaft hole of the bow arm 1 and the pulley 2 by the forward push cylinder 303 to complete the assembly. Specifically, the pulley shaft bin 305 is fixed to the bottom plate through a plurality of support rods 304, the bottom plate is located on the workbench 6 and is processed with a plurality of fixing holes 307, the fixing holes 307 cooperate with the fixed shaft 201, so that the bottom plate is installed on the workbench 6, and a third fixing plate 302 is provided on the side of the bottom plate, and a forward push cylinder 303 is installed on the third fixing plate 302.

[0048] like Figure 5 As shown, the vibration plate 410 is installed on the fifth fixed plate 409 for storing and distributing the auxiliary chord wheel 4. The fifth fixed plate 409 is supported by the fixed rod 401. The auxiliary chord wheel material plate 403 is fixed on the support column 402. The fixed rod 401 and the support column 402 are both installed on the workbench 6. The vibration plate 410 transports the blanks to the notch 406 through the track 408. The notch 406 is fixed on the auxiliary chord wheel material slot 411. The forward cylinder 405 is fixed on the side of the auxiliary chord wheel material plate 403. The downward cylinder 407 is installed on the fourth fixed plate 404. The fourth fixed plate 404 is installed on the auxiliary chord wheel material plate 403. Specifically, the forward cylinder 405 pushes the auxiliary chord wheel 4 transported from the vibration plate 410 horizontally to the mounting hole of the auxiliary chord wheel 4, and then the downward cylinder 407 pushes the auxiliary chord wheel 4 vertically onto the pulley shaft 3.

[0049] like Figure 6 As shown, the clamping strip 508 is vertically fixed on the sixth fixed plate 507, the rotating shaft 505 is driven by the second motor 504 after deceleration, the second motor 504 is fixed on the second mounting plate 503, the second linear motion module 502 is arranged on the support block 501 of the workbench 6 and is composed of a second screw mechanism driven by the second motor after deceleration, the second fixed plate 209 is mounted on the second nut seat of the second screw mechanism, and the sixth fixed plate 507 is mounted on the mounting plate of the second motor. Specifically, two calipers 506 are arranged at the pair, the calipers 506 move to the clamping strip 508 and retreat to remove the clamping spring 5, and at the same time the second motor 504 rotates 180 degrees, the calipers 506 with the clamping spring 5 are reversed and close to the pulley shaft 3, and finally the clamping spring 5 is installed on the pulley shaft 3.

[0050] Embodiment 3

[0051] Reference Figure 1-6 As shown, based on the technical solution of the above embodiment, a method for assembling a composite crossbow arm and a pulley comprises the following steps:

[0052] S1. Clamping the bow arm 1, the two bow arms 1 are fixed on the fixture plate 106, which is generally installed by a worker. The clamp plate 106 is provided with a limit assembly, and the clamp plate 106 can rotate and move linearly;

[0053] S2. Install the pulley 2 and the pulley shaft 3, the fixture plate 106 moves forward in a straight line and maintains a horizontal direction, the pulley 2 is clamped from the pulley trough 213 to between the two bow arms 1, the pulley shaft 3 is dropped from the pulley shaft bin 305 and is pushed to pass through the two bow arms 1 and the pulley 2 at the same time, and the limit assembly limits and blocks the two ends of the pulley shaft 3 respectively;

[0054] S3. Install the secondary chord wheel 4 and the retaining spring 5, the clamp plate 106 moves forward in a straight line and flips 90 degrees, the limit assembly is removed from the upper end of the pulley shaft 3, the secondary chord wheel 4 is transported from the vibration plate 410 and pressed down onto the pulley shaft 3, the retaining spring 5 is taken out from the clamping strip 508 and clamped onto the pulley shaft 3, the clamp plate 106 flips 180 degrees, and the above-mentioned installation operation of the secondary chord wheel 4 and the retaining spring 5 is repeated, the clamp plate 106 moves linearly to reset, and the assembled pulley 2 bow arm 1 structure is taken out.

[0055] In step S1, the limiting components are respectively installed on both sides of the clamp plate 106, and the limiting components include a blocking cylinder 108 and a blocking block 110. The blocking cylinder 108 pushes the blocking block 110 to reciprocate along the length direction of the bow arm 1. The clamp plate 106 is fixed on the mounting rod 105 driven by the first motor 103 after deceleration. The first motor 103 is installed on the first linear motion module 101, and the first linear motion module 101 is set on the workbench 6 of the frame 7.

[0056] In step S2, the pulley trough 213 is tilted above the workbench 6 of the frame 7, a support plate 202 is suspended on the workbench 6, a lifting cylinder 203 is installed on the support plate 202, the lifting cylinder 203 is connected to the horizontal cylinder 208 below, the horizontal cylinder 208 is connected to the clamping cylinder 210, and the clamping cylinder 210 is provided with a claw 211 that can clamp the pulley 2; a circular groove 306 for accommodating the pulley shaft 3 is provided below the pulley shaft silo 305, the circular groove 306 is provided on the bottom plate, the bottom plate is located on the workbench 6 and is installed with a forward thrust cylinder 303, and the telescopic shaft of the forward thrust cylinder 303 reciprocates along the axial direction of the circular groove 306.

[0057] In step S3, the vibration plate 410 is arranged above the workbench 6 of the frame 7, and the vibration plate 410 transports the secondary chord wheel 4 to the secondary chord wheel material groove 411 processed on the secondary chord wheel material plate 403 through the track 408. The secondary chord wheel material groove 411 is arranged in a horizontal direction and is processed with a mounting hole that passes through from top to bottom. The secondary chord wheel material plate 403 is installed with a forward cylinder 405 and a downward pressure cylinder 407. The telescopic shaft of the forward cylinder 405 reciprocates along the length direction of the secondary chord wheel material groove 411, and the telescopic shaft of the downward pressure cylinder 407 reciprocates along the axial direction of the mounting hole; the clamping strip 508 is vertically fixed on the workbench 6, and a second linear motion module 502 is fixed on the workbench 6. A second motor 504 is installed on the second linear motion module 502. A caliper 506 is horizontally arranged on the rotating shaft 505 driven by the second motor 504 after deceleration, and the caliper 506 cooperates with the retaining spring 5.

[0058] like Figure 7-8 As shown, the overall composition of the pulley 2 bow arm 1 structure is that two bow arms 1 arranged side by side are connected through a pulley shaft 3, wherein the pulley 2 is penetrated on the pulley shaft 3 between the two bow arms 1, and the pulley shaft 3 located outside the bow arm 1 is mounted with a secondary string wheel 4 and a retaining spring 5, and both ends of the pulley shaft 3 are respectively processed with retaining grooves matching the retaining spring 5.

[0059] In the device of the present invention, the assembly and matching relationship of the various components involved, the motor, cylinder and screw mechanism and the supporting control software are existing technologies or materials, and the relevant technical personnel can directly purchase or customize them from the market according to the required product models and specifications.

[0060] The electrical components mentioned in the text are all connected to an external main controller and 220V mains or industrial electricity, and the main controller can be a conventional known device such as a computer that plays a control role.

[0061] The above is only a preferred specific embodiment of the present invention, and the common sense such as the known specific structure and characteristics in the scheme is not described too much here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned embodiment, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiment should be regarded as exemplary and non-restrictive. Any technician familiar with the technical field within the technical scope disclosed by the present invention, according to the technical scheme of the present invention and its inventive concept, shall be equivalently replaced or changed, which shall be covered within the protection scope of the present invention.

Claims

1. A method for assembling a composite crossbow arm and a pulley, characterized in that: The following steps are involved: S1. Clamping the bow arm (1), the two bow arms (1) are respectively fixed on the fixture plate (106), the fixture plate (106) is provided with a limit assembly, and the fixture plate (106) can rotate and move linearly; S2. Install the pulley (2) and the pulley shaft (3), the fixture plate (106) moves forward in a straight line and maintains a horizontal direction, the pulley (2) is clamped from the pulley trough (213) to between the two bow arms (1), the pulley shaft (3) is dropped from the pulley shaft bin (305) and is pushed to pass through the two bow arms (1) and the pulley (2) at the same time, and the limit assembly respectively limits and blocks the two ends of the pulley shaft (3); S3. Install the secondary chord wheel (4) and the retaining spring (5), the fixture plate (106) moves forward in a straight line and turns 90 degrees, the limit assembly is removed from the upper end of the pulley shaft (3), the secondary chord wheel (4) is transported from the vibration plate (410) and pressed down onto the pulley shaft (3), the retaining spring (5) is taken out from the clamping strip (508) and clamped onto the pulley shaft (3), the fixture plate (106) turns 180 degrees, and the above-mentioned installation operation of the secondary chord wheel (4) and the retaining spring (5) is repeated, the fixture plate (106) moves straight line to reset, and the assembled pulley (2) bow arm (1) structure is taken out.

2. The method for assembling a composite crossbow arm and a pulley according to claim 1, characterized in that: In step S1, the two sides of the clamp plate (106) are respectively installed with limit assemblies, the limit assemblies include a blocking cylinder (108) and a blocking block (110), the blocking cylinder (108) pushes the blocking block (110) to reciprocate along the length direction of the bow arm (1), the clamp plate (106) is fixed on the mounting rod (105) driven by the first motor (103) after deceleration, the first motor (103) is installed on the first linear motion module (101), and the first linear motion module (101) is set on the workbench (6) of the frame (7).

3. The method for assembling a composite crossbow arm and a pulley according to claim 1, characterized in that: In step S2, the pulley trough (213) is tilted above the workbench (6) of the frame (7), a support plate (202) is suspended on the workbench (6), a lifting cylinder (203) is installed on the support plate (202), the lifting cylinder (203) is connected to the horizontal cylinder (208) below, the horizontal cylinder (208) is connected to the clamping cylinder (210), and the clamping cylinder (210) is provided with a claw (211) that can clamp the pulley (2); a circular groove (306) for accommodating the pulley shaft (3) is provided below the pulley shaft silo (305), the circular groove (306) is provided on the bottom plate, the bottom plate is located on the workbench (6) and is installed with a forward thrust cylinder (303), and the telescopic shaft of the forward thrust cylinder (303) reciprocates along the axial direction of the circular groove (306).

4. The method for assembling a composite crossbow arm and a pulley according to claim 1, characterized in that: In step S3, the vibration plate (410) is arranged above the workbench (6) of the frame (7), and the vibration plate (410) conveys the secondary chord wheel (4) to the secondary chord wheel material groove (411) processed on the secondary chord wheel material plate (403) through the track (408). The secondary chord wheel material groove (411) is arranged in a horizontal direction and is processed with mounting holes that penetrate up and down. The secondary chord wheel material plate (403) is installed with a forward cylinder (405) and a downward pressure cylinder (407). The telescopic shaft of the forward cylinder (405) is along the secondary chord wheel material. The slot (411) reciprocates in the length direction, and the telescopic shaft of the downward pressure cylinder (407) reciprocates in the axial direction of the mounting hole; the clamping strip (508) is vertically fixed on the workbench (6), and a second linear motion module (502) is fixed on the workbench (6), and a second motor (504) is installed on the second linear motion module (502). A caliper (506) is horizontally arranged on the rotating shaft driven by the second motor (504) after deceleration, and the caliper (506) cooperates with the retaining spring (5).

5. An assembly device for a composite crossbow arm and a pulley, comprising a frame (7) and a workbench (6) on the frame (7), characterized in that: A bow arm moving mechanism (10) is installed on the workbench (6), and the bow arm moving mechanism (10) includes a fixture plate (106), two bow arms (1) are clamped on the fixture plate (106), and blocking cylinders (108) are respectively provided on both sides of the fixture plate (106). The blocking block (110) connected to the blocking cylinder (108) reciprocates parallel to the length direction of the bow arm (1), and the fixture plate (106) is driven to rotate by the first motor (103) after the speed is reduced, and the first motor (103) is driven to reciprocate by the first linear motion module (101); A pulley mounting mechanism (20), the pulley mounting mechanism (20) comprising an inclined pulley trough (213) and a horizontally arranged clamping claw (211), the clamping claw (211) being mounted on a clamping claw cylinder (210) for clamping a pulley (2) in the pulley trough (213), the clamping claw cylinder (210) being connected to a horizontal cylinder (208), the horizontal cylinder (208) being connected to a lifting cylinder (203), the lifting cylinder (203) being mounted on a support plate (202), the support plate (202) and the pulley trough (213) being supported by a plurality of fixed shafts (201); A pulley shaft mounting mechanism (30), wherein the pulley shaft mounting mechanism (30) is arranged side by side with the pulley mounting mechanism (20) and comprises a pulley shaft bin (305) located below the support plate (202), the pulley shaft bin (305) being suspended on a bottom plate, a circular groove (306) for accommodating the pulley shaft (3) being processed on the bottom plate, a forward thrust cylinder (303) being installed on the side of the bottom plate, and a telescopic shaft of the forward thrust cylinder (303) reciprocatingly moving along the axial direction of the circular groove (306); A secondary chord wheel installation mechanism (40), the secondary chord wheel installation mechanism (40) comprising a vibration plate (410) and a secondary chord wheel material plate (403), the secondary chord wheel material plate (403) being processed with a secondary chord wheel material groove (411) in a horizontal direction, the vibration plate (410) conveying the secondary chord wheel (4) to the secondary chord wheel material groove (411), the secondary chord wheel material groove (411) being processed with a mounting hole penetrating up and down, the secondary chord wheel material plate (403) being installed with a forward cylinder (405) and a downward cylinder (407), the telescopic shaft of the forward cylinder (405) reciprocating along the length direction of the secondary chord wheel material groove (411), and the telescopic shaft of the downward cylinder (407) reciprocating along the axial direction of the mounting hole; The retaining spring installation mechanism (50) comprises a clamping strip (508) and a caliper (506) which are arranged relatively to each other, a plurality of retaining springs (5) are clamped on the retaining strip (508), the caliper (506) is fixed on a rotatable shaft, the shaft is installed on the second linear motion module (502), and the caliper (506) is clamped and used in cooperation with the retaining springs (5).

6. The assembly device of the composite crossbow arm and the pulley according to claim 5, characterized in that: The fixture plate (106) is processed with a long groove (107), the long groove (107) is embedded with the bow arm (1), a guide rod (109) is movably inserted in the clamp plate, the guide rod (109) is connected to the blocking block (110), the first motor (103) is installed on the first fixed plate (204) and drives the mounting rod (105) after deceleration, the mounting rod (105) is fixedly connected to the fixture plate (106), the first linear motion module (101) is arranged on the workbench (6) and is composed of a first screw mechanism driven by the first motor after deceleration, and the first fixed plate (204) is installed on the first nut seat of the first screw mechanism.

7. The assembly device of the composite crossbow arm and the pulley according to claim 5, characterized in that: A limit screw (212) for preventing the pulley (2) from sliding out is provided at the lower end of the pulley trough (213); a fixed shaft (201) is provided through the pulley trough (213); a limit ring (214) is mounted on the fixed shaft (201) to support the pulley trough (213); and the fixed shaft (201) is fixed on the workbench (6); the clamping cylinder (210) and the horizontal cylinder (208) are both installed on the second fixed plate (209); the second fixed plate (209) is respectively connected to the lifting cylinder (203) and the anti-rotation rod (205); the anti-rotation rod (205) is matched with the shaft sleeve (206) hole shaft on the support plate (202); and the support plate (202) is supported by multiple fixed shafts (201).

8. The assembly device of the composite crossbow arm and the pulley according to claim 5, characterized in that: The pulley shaft silo (305) is fixed on the base plate through multiple support rods (304). The base plate is located on the workbench (6) and is processed with multiple fixing holes (307). The fixing holes (307) are matched with the fixed shaft (201). A third fixing plate (302) is provided on the side of the base plate, and a forward thrust cylinder (303) is installed on the third fixing plate (302).

9. The assembly device of the composite crossbow arm and the pulley according to claim 5, characterized in that: The vibration plate (410) is mounted on a fifth fixed plate (409), the fifth fixed plate (409) is supported by a fixed rod (401), the secondary chord wheel plate (403) is fixed on a support column (402), the fixed rod (401) and the support column (402) are both mounted on a workbench (6), the vibration plate (410) transports the blank to a notch (406) via a track (408), the notch (406) is located on a secondary chord wheel slot (411), the forward cylinder (405) is fixed on a side of the secondary chord wheel plate (403), the downward pressure cylinder (407) is mounted on a fourth fixed plate (404), and the fourth fixed plate (404) is mounted on the secondary chord wheel plate (403).

10. The assembly device of the composite crossbow arm and the pulley according to claim 5, characterized in that: The clamping strip (508) is vertically fixed on the sixth fixed plate (507), the rotating shaft is driven by the second motor (504) after the speed is reduced, the second motor (504) is fixed on the second mounting plate (503), the second linear motion module (502) is arranged on the support block (501) of the workbench (6) and is composed of a second screw mechanism driven by the second motor after the speed is reduced, the second fixed plate (209) is installed on the second nut seat of the second screw mechanism, and the sixth fixed plate (507) is installed on the mounting plate of the second motor.

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