A self-adaptive clamping device and clamping method for vacuum packaging machine

Abstract

The present invention discloses an adaptive clamping device and a clamping method for a vacuum packaging machine, wherein the adaptive clamping device comprises a bracket; a first guide rail is fixedly connected to the bracket, a front slider slidably connected to the first guide rail is sleeved on the first guide rail, a clamping mechanism is installed on the front slider, a rear slider slidably connected to the first guide rail is sleeved on the rear slider, a holder is fixedly connected to the holder, a bag mouth shrinking cylinder is installed on the holder, and the piston rod end of the bag mouth shrinking cylinder is connected to the clamping mechanism; a screw rod is rotatably connected to the bracket, a threaded sleeve is sleeved on the screw rod, and the threaded sleeve and the screw rod are matched by threads, the threaded sleeve is fixedly connected to the holder, and the screw rod rotates to drive the threaded sleeve to move along the axial direction of the screw rod and drives the holder and the components fixedly connected thereto to move. The present invention has high versatility, wide application range, high production efficiency, compact structure, and convenient use.

Description

Technical field:

[0001] The invention relates to the technical field of vacuum packaging machines, and in particular to an adaptive clamping device for a vacuum packaging machine and a clamping method thereof. Background technology:

[0002] Packaging machines are machines that package products to protect and beautify them. With the development of technology, vacuum packaging equipment for granular materials has evolved from manual, semi-automatic, fully automatic to more intelligent. During the development process, vacuum packaging equipment has always been in a single-function state due to different packaging specifications. Different packaging equipment is required for each different product, and it cannot adapt to different sizes of material bags to provide clamping operations. The main reason is that the different widths of the material bags make it impossible for the clamping device to achieve full coverage.

[0003] Therefore, how to improve the limitations of the clamping device of the existing vacuum packaging equipment is a problem to be solved by the present invention. Summary of the invention:

[0004] The purpose of the present invention is to solve the technical problem that the clamping device of the existing vacuum packaging equipment has a small application range, and to provide an adaptive clamping device for a vacuum packaging machine and a clamping method thereof.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An adaptive clamping device for a vacuum packaging machine comprises a bracket, on which a pushing mechanism and a driving transmission mechanism are provided, on which a clamping mechanism is provided, and the clamping mechanism is used to clamp the edge of a packaging bag; the pushing mechanism is used to push the clamping mechanism to a desired position, and the driving transmission mechanism is used to drive the pushing mechanism and the clamping mechanism thereon to corresponding positions.

[0007] Furthermore, the driving transmission mechanism includes a clamping seat, a connecting seat, a screw rod, a screw sleeve, a first guide rail, and a rear slider; the pushing mechanism includes a mounting seat, a front slider, and a bag opening shrinking cylinder;

[0008] The bracket is fixedly connected with a first guide rail, a front slider slidably connected to the first guide rail is sleeved on the first guide rail, a clamping mechanism is installed on the front slider, a rear slider slidably connected to the first guide rail is sleeved on the rear slider, a clamping seat is fixedly connected to the rear slider, a bag opening shrinking cylinder is installed on the clamping seat, and the piston rod end of the bag opening shrinking cylinder is connected to the clamping mechanism; the bracket is rotatably connected with a screw rod, a screw rod is sleeved on the screw rod, and the screw rod and the screw rod are matched by threads, and the screw rod is fixedly connected to the clamping seat, and the screw rod rotates to drive the screw rod to move along the axial direction of the screw rod and drive the clamping seat and the components fixedly connected thereto to move. The clamping mechanism is used to clamp the edge of the packaging bag.

[0009] Furthermore, the bracket includes a first base plate, a first vertical plate, a second vertical plate, a first reinforcing plate, a first fixed plate, and a mounting plate; wherein the first base plate is horizontally arranged, the first base plate is fixedly connected to a second vertical plate arranged perpendicularly thereto, the second vertical plate is fixedly connected to the first fixed plate, the first fixed plate is arranged parallel to the first base plate, one side of the second vertical plate is fixedly connected to the first vertical plate, and the other side of the second vertical plate is fixedly connected to the first reinforcing plate; the first fixed plate is fixedly connected to a mounting plate perpendicular to it, a motor is fixedly installed on the mounting plate, a driving wheel is fixedly connected to the output shaft of the motor, a first bearing sleeve is fixedly installed on the mounting plate, one end of the screw rod is rotatably connected to the first bearing sleeve, a connecting seat is fixedly connected to the first fixed plate, a second bearing sleeve is fixedly installed on the connecting seat, and the other end of the screw rod is rotatably connected to the second bearing sleeve; the end of the screw rod is fixedly connected to a driven wheel, and the driving wheel and the driven wheel are sleeved with the same transmission chain and transmitted through the transmission chain.

[0010] Furthermore, a second reinforcing plate is fixedly connected to the side wall of the mounting plate, and the second reinforcing rib is perpendicular to the mounting plate.

[0011] Furthermore, the above-mentioned adaptive clamping device also includes a connecting guide rail, which is used to be fixedly connected to an external packaging production line, and blocks are fixedly connected to both ends of the connecting guide rail, and the outer dimensions of the blocks are larger than the cross-sectional dimensions of the connecting guide rail; a connecting slider is slidably connected to the connecting guide rail, the base plate is fixedly connected to the connecting slider, and a fisheye joint is fixedly connected to the second vertical plate, and the fisheye joint is used to connect to an external power device to drive the clamping device to move along the connecting guide rail.

[0012] Furthermore, the connecting seat includes a front panel, a second bottom plate and a third reinforcing plate; the front panel is vertically arranged and fixedly connected to the second bottom plate; the third reinforcing plate is on the rear side of the front panel and fixedly connected to the left and right sides of the bottom plate; the second bottom plate is fixedly connected to the first fixed plate.

[0013] Furthermore, the base includes a vertically arranged cylinder mounting tailstock, a horizontally arranged connecting plate, and a clamping plate perpendicular to the other side of the connecting plate. The cylinder mounting tailstock is fixedly connected to the connecting plate, and the clamping plate is fixedly connected to one side of the connecting plate; the connecting plate is installed on the rear slider, the cylinder body end of the bag mouth shrinkage cylinder is hinged on the cylinder mounting tailstock, and the clamping plate is fixedly connected to the screw sleeve.

[0014] Furthermore, a buffer is fixedly connected to the front panel, the buffer corresponds to the position of the card plate, and the buffer is used to buffer the card plate running to the end of the buffer so as to buffer the operation of the device;

[0015] The card plate is fixedly connected with a detection plate, the front panel is fixedly connected with a sensor, the sensor is arranged opposite to the detection plate and is used to measure the distance between the sensor and the detection plate.

[0016] Furthermore, the mounting seat includes a third base plate arranged horizontally and a support ear arranged vertically to the third base plate; the support ear is fixedly connected to the third base plate; the third base plate is fixedly connected to the front slider, and a floating joint is fixedly connected to the support ear and is connected to the piston rod end of the bag mouth contraction cylinder through the floating joint.

[0017] Furthermore, the clamping mechanism includes a second fixed plate, the second fixed plate is fixedly connected to the mounting base, a clamping cylinder is fixedly mounted on the second fixed plate, a fixing base is fixedly connected to the front end of the second fixed plate, a cover plate is fixedly connected to the upper and lower ends of the fixing base, the end of the cylinder telescopic rod of the clamping cylinder is fixedly connected to the driving base, and the driving base is a T-shaped component; the two sides of the end of the driving base away from the clamping cylinder are rotatably connected to four transmission plates through the first rotating shaft and the bushing, and the four transmission plates are symmetrically arranged on the left and right sides of the driving base and at both ends of the bushing; two clamping arms are provided on both sides of the driving base, the clamping arms are symmetrically arranged on both sides of the driving base, and the four transmission plates are hingedly connected to the clamping arms by rotating pins; the middle part of the clamping arm is hinged to the two cover plates through the second rotating shaft.

[0018] Furthermore, a clamping plate is fixedly connected to the inner wall on the opposite side of the two clamping arms; and the inner wall of the clamping plate is provided with concave and convex grooves that engage with each other.

[0019] A clamping method for an adaptive clamping device for a vacuum packaging machine, applied to the adaptive clamping device, the clamping method comprising:

[0020] Step 1: Two adaptive clamping devices are arranged symmetrically and the clamping mechanisms of the two adaptive clamping devices are arranged opposite to each other, and the distance between the sensors on the two clamping devices and the detection plate is set according to the width of the material bag opening;

[0021] Step 2: According to the control program, the motor drives the clamping mechanism in reverse to a preset position where the clamping plates can clamp both sides of the material bag; and the guide rod of the bag opening contraction cylinder is in a contracted state; the two clamping arms on the clamping mechanism rotate in reverse around the second rotating shaft under the drive of the cylinder telescopic rod of the clamping claw cylinder, so that the two clamping plates are in an open state;

[0022] Step 3: The bag taking mechanism of the bag supply equipment delivers the material packaging bag between the clamping mechanisms of the two adaptive clamping devices, and the cylinder telescopic rod of the clamping claw cylinder contracts to rotate the two clamping arms toward each other around the second rotating axis and bring the two clamping plates together to clamp the two sides of the material bag;

[0023] Step 4: When the bag is to be opened, the two suction cups of the bag opening mechanism suck the two sides of the material packaging bag and move toward both sides to open the bag. The guide rod of the bag opening shrinkage cylinder extends out to drive the two clamping mechanisms to move toward each other, meeting the shrinkage space required by the material bag when opening the bag; the bag opening work is completed.

[0024] Furthermore, when the variety required by the above steps is processed and replaced with other varieties, the motor drives the screw to rotate and drive the mounting seat to move along the axial direction of the screw, and adjusts the distance between the detection plate and the sensor until the clamping spacing of the required variety packaging bag is reached; then repeat the above four steps to complete the bag opening.

[0025] The adaptive clamping device and the clamping method for a vacuum packaging machine provided by the present invention have the following beneficial effects: according to the width size of the material bag, the adaptive clamping device drives the driving wheel to rotate under the drive of the motor, the driving wheel drives the passive wheel to rotate through the transmission chain, the passive wheel drives the screw to rotate, and the screw drives the screw sleeve to rotate; the movement of the screw sleeve drives the movement of the clamping seat, thereby adjusting the position of the clamping mechanism, and then adapting to the bag opening requirements of bags of different width sizes; the tail of the bag mouth shrinking cylinder is connected to the clamping seat installed on the front slider, and the piston rod of the bag mouth shrinking cylinder is connected to the mounting seat installed on the front slider. Because the clamping mechanism is installed on the mounting seat on the front slider, the bag mouth shrinking cylinder drives the clamping mechanism, and the piston rod of the bag mouth shrinking cylinder is extended and retracted, and moves accordingly to realize the shrinkage of the material bag mouth, thereby realizing bag opening; the above technical scheme facilitates bag opening and can adapt to the clamping operation of material bags of different sizes; it has high versatility, a wide range of application, and high production efficiency; it has a compact structure and is easy to use. Description of the drawings:

[0026] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings:

[0027] Figure 1 A front view of an adaptive clamping device for a vacuum packaging machine provided by the present invention;

[0028] Figure 2 A right side view of an adaptive clamping device for a vacuum packaging machine provided by the present invention;

[0029] Figure 3 A top view of an adaptive clamping device for a vacuum packaging machine provided by the present invention;

[0030] Figure 4 A three-dimensional diagram of an adaptive clamping device for a vacuum packaging machine provided by the present invention;

[0031] Figure 5 A schematic diagram of the three-dimensional structure of a clamping mechanism in an adaptive clamping device for a vacuum packaging machine provided by the present invention with a cover plate removed;

[0032] Figure 6 A schematic diagram of a top view of the structure of a clamping mechanism in an adaptive clamping device for a vacuum packaging machine provided by the present invention with a cover plate removed;

[0033] Figure 7 A schematic diagram of the structure of a connecting seat in an adaptive clamping device for a vacuum packaging machine provided by the present invention;

[0034] Figure 8 A schematic diagram of the structure of a mounting seat in an adaptive clamping device for a vacuum packaging machine provided by the present invention;

[0035] Fig. 9 A schematic diagram of the structure of a holder in an adaptive clamping device for a vacuum packaging machine provided by the present invention;

[0036] Fig.10 A schematic diagram of the structure of a bracket in an adaptive clamping device for a vacuum packaging machine provided by the present invention;

[0037] Fig.11 A schematic diagram of the working state of an adaptive clamping device for a vacuum packaging machine provided by the present invention.

[0038] Explanation of the reference numerals in the figure: 1. bracket; 100. first bottom plate; 101. first vertical plate; 102. second vertical plate; 103. first reinforcing plate; 104. first fixing plate; 105. mounting plate; 106. second reinforcing plate; 2. clamping mechanism; 200. clamping claw cylinder; 201. second fixing plate; 202. fixing seat; 203. driving seat; 204. transmission plate; 205. clamping arm; 206. first rotating shaft; 207. rotating pin; 208. second rotating shaft; 209. cushion sleeve; 210. cylinder telescopic rod; 211. cover plate; 212. clamping plate; 3. mounting seat; 300. The third base plate; 301, ear; 4, holder; 40, cylinder mounting tailstock; 401, connecting plate; 402, holder; 5, connecting seat; 500, front panel; 501, second base plate; 502, third reinforcing plate; 6, lead screw; 7, screw sleeve; 8, driving wheel; 9, transmission chain; 10, driven wheel; 11, buffer; 12, motor; 13, first guide rail; 14, rear slider; 15, front slider; 16, bag mouth contraction cylinder; 17, floating joint; 18, connecting guide rail; 19, connecting slider; 20, block; 21, sensor; 22, detection board; 23, fisheye joint. Specific implementation method:

[0039] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0040] 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.

[0041] It should be noted that all directional indications in the embodiments of the present invention (such as up-down-left-right-front-back...) are only used to explain the relative position relationship - movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0042] like Figure 1-10 As shown, an adaptive clamping device for a vacuum packaging machine includes a bracket 1, a clamping mechanism 2, a mounting seat 3, a clamping seat 4, a connecting seat 5, a screw rod 6, a screw sleeve 7, a first guide rail 13, a rear slider 14, a front slider 15, and a bag opening shrinking cylinder 16; the bracket 1 is fixedly connected with the first guide rail 13, the first guide rail 13 is sleeved with a front slider 15 slidably connected thereto, the front slider 15 is mounted with the clamping mechanism 2, the first guide rail 13 is sleeved with a rear slider 14 slidably connected thereto, the rear slider 14 is fixedly connected with the clamping seat 4, the clamping seat 4 is mounted with a bag opening shrinking cylinder 16, and the piston rod end of the bag opening shrinking cylinder 16 is connected to the clamping mechanism 2; the bracket 1 is rotatably connected with the screw rod 6, the screw rod 6 is sleeved with a screw sleeve 7, and the screw sleeve 7 and the screw rod 6 are threadedly matched, the screw sleeve 7 is fixedly connected to the clamping seat 4, the screw rod 6 rotates to drive the screw sleeve 7 to move axially along the screw rod 6 and drives the clamping seat 4 and the components fixedly connected thereto to move. The clamping mechanism 2 is used to clamp the edge of the packaging bag.

[0043] Specifically, the bracket 1 includes a first bottom plate 100, a first vertical plate 101, a second vertical plate 102, a first reinforcing plate 103, a first fixing plate 104, and a mounting plate 105; wherein the first bottom plate 100 is horizontally arranged, the first bottom plate 100 is fixedly connected to the second vertical plate 102 arranged vertically thereto, the second vertical plate 102 is fixedly connected to the first fixing plate 104, the first fixing plate 104 is arranged parallel to the first bottom plate 100, one side of the second vertical plate 102 is fixedly connected to the first vertical plate 101, and the other side of the second vertical plate 102 is fixedly connected to the first reinforcing plate 103; the first fixing plate 1 04 is fixedly connected with a mounting plate 105 perpendicular thereto, a motor 12 is fixedly mounted on the mounting plate 105, a driving wheel 8 is fixedly connected to the output shaft of the motor 12, a first bearing sleeve is fixedly mounted on the mounting plate 105, one end of the screw rod 6 is rotatably connected to the first bearing sleeve, a connecting seat 5 is fixedly connected to the first fixed plate 104, a second bearing sleeve is fixedly mounted on the connecting seat 5, and the other end of the screw rod 6 is rotatably connected to the second bearing sleeve; the end of the screw rod 6 is fixedly connected with a driven wheel 10, the driving wheel 8 and the driven wheel 10 are sleeved with the same transmission chain 9 and are transmitted through the transmission chain. The motor 12 and the transmission mechanism are installed by the mounting plate 105, which has a compact structure and saves space.

[0044] Specifically, a second reinforcing plate 106 is fixedly connected to the side wall of the mounting plate 105, and the second reinforcing rib 106 is perpendicular to the mounting plate 105. The mounting plate 105 is reinforced by the second reinforcing plate 106 to avoid structural deformation leading to position error of the transmission mechanism, thereby avoiding affecting the running accuracy.

[0045] Specifically, the above-mentioned adaptive clamping device also includes a connecting guide rail 18, which is used to be fixedly connected to an external packaging production line. Both ends of the connecting guide rail 18 are fixedly connected with blocks 20, and the outer dimensions of the blocks 20 are larger than the cross-sectional dimensions of the connecting guide rail 18; a connecting slider 19 is slidably connected to the connecting guide rail 18, and the base plate is fixedly connected to the connecting slider 19. A fisheye joint 23 is fixedly connected to the second vertical plate 102, and the fisheye joint 23 is used to connect to an external power device and thereby drive the clamping device to move along the connecting guide rail 18.

[0046] Specifically, the connection base 5 includes a front panel 500, a second bottom plate 501 and a third reinforcing plate 502; the front panel 500 is vertically arranged and fixedly connected to the second bottom plate 501; the third reinforcing plate 502 is at the rear side of the front panel 500 and is fixedly connected to the left and right sides of the bottom plate 501; the second bottom plate 501 is fixedly connected to the first fixing plate 104. The connection base 5 is composed of the front panel 500, the second bottom plate 501 and the third reinforcing plate 502 which are perpendicular to each other, so as to improve the structural stability, keep the screw rod 6 running stably, and reduce the wear between the screw rod 6 and the screw sleeve 7.

[0047] Specifically, the holder 4 includes a vertically arranged cylinder mounting tailstock 400, a horizontally arranged connecting plate 401, and a card plate 402 perpendicular to the other side of the connecting plate 401. The cylinder mounting tailstock 400 is fixedly connected to the connecting plate 401, and the card plate 402 is fixedly connected to one side of the connecting plate 401; the connecting plate 401 is installed on the rear slider 14, and the cylinder end of the bag mouth shrinking cylinder 16 is hinged on the cylinder mounting tailstock 400, and the card plate 402 is fixedly connected to the screw sleeve 7. The cylinder mounting tailstock 400 is arranged on one side of the holder 4 to facilitate the installation of the cylinder, and the card plate 402 is arranged on the other side. The card plate 402 is fixedly connected to the screw sleeve 7, and then the driving force of the screw rod 6 driving the screw sleeve 7 to move is transmitted to the holder 4, thereby driving the holder 4 and the components fixed thereon to move together.

[0048] Specifically, a buffer 11 is fixedly connected to the front panel 500, and the position of the buffer 11 corresponds to the card plate 402. The buffer 11 is used to buffer the card plate 402 running to the end of the buffer 11, thereby buffering the operation of the device;

[0049] The card board 402 is fixedly connected with a detection board 22, and the front panel 500 is fixedly connected with a sensor 21, which is arranged opposite to the detection board 22 and is used to measure the distance between the sensor 21 and the detection board 22. By detecting the distance between the detection board 22 by the sensor 21, the system can automatically determine the position, and then adjust the position.

[0050] Specifically, the mounting seat 3 includes a third bottom plate 300 arranged horizontally and a support ear 301 arranged vertically to the third bottom plate 300; the support ear 301 is fixedly connected to the third bottom plate 300; the third bottom plate 300 is fixedly connected to the front slider 15, and a floating joint is fixedly connected to the support ear 301 and is connected to the piston rod end of the bag opening contraction cylinder 16 through the floating joint. The mounting seat 3 facilitates the installation of the clamping mechanism 2 and facilitates the bag opening contraction cylinder to drive the clamping mechanism 2.

[0051] Specifically, the clamping mechanism 2 includes a second fixing plate 201, the second fixing plate 201 is fixedly connected to the mounting base 3, a clamping cylinder 200 is fixedly installed on the second fixing plate, a fixing base 202 is fixedly connected to the front end of the second fixing plate 201, a cover plate 211 is fixedly connected to the upper and lower ends of the fixing base 202, and a drive base 203 is fixedly connected to the end of the cylinder telescopic rod 210 of the clamping cylinder 200, and the drive base 203 is a T-shaped component; the drive base 203 is away from the clamping cylinder 200. The two sides of one end of the drive seat 203 are respectively connected to the four transmission plates 204 through the first rotating shaft 206 and the cushion sleeve 209, and the four transmission plates 204 are symmetrically placed on the left and right sides of the drive seat 203 and at both ends of the cushion sleeve 209; two clamping arms 205 are provided on both sides of the drive seat 203, and the clamping arms 205 are symmetrically arranged on both sides of the drive seat 203. The four transmission plates 204 are hingedly connected to the clamping arms 205 by the rotating pins 207; the middle part of the clamping arm 205 is hinged to the two cover plates 211 through the second rotating shaft 208. The driving seat 203 is pushed by the clamping cylinder 200, and the transmission of the transmission plate 204 and the clamping arm 205 is used to convert the linear drive of the clamping cylinder 200 into the clamping rotation of the clamping arm 205, so as to clamp the edge of the material bag.

[0052] Specifically, a clamping plate 212 is fixedly connected to the inner wall of the two clamping arms 205 on the opposite side; the inner wall of the clamping plate 212 is provided with concave and convex grooves that engage with each other, so that the edge of the material bag is clamped more firmly, and it can be easily replaced after being worn, without having to replace the entire clamping arm 205 after being worn.

[0053] A clamping method for an adaptive clamping device for a vacuum packaging machine, applied to the adaptive clamping device, the clamping method comprising:

[0054] Step 1: Two adaptive clamping devices are arranged symmetrically and the clamping mechanisms 2 of the two adaptive clamping devices are arranged opposite to each other, and the distance between the sensors 21 and the detection plate 22 on the two clamping devices is set according to the width of the material bag opening;

[0055] Step 2: If Fig.11 As shown, when working, according to the control program, the motor 12 drives the clamping mechanism 2 in the reverse direction to a preset position where the clamping plates 212 can clamp both sides of the material bag; and the guide rod of the bag opening contraction cylinder 16 is in a contracted state; the two clamping arms 205 on the clamping mechanism 2 are driven by the extension of the cylinder telescopic rod 210 of the clamping claw cylinder 200, so that the two clamping arms 205 rotate in the opposite direction around the second rotating shaft 208, so that the two clamping plates 212 are in an open state;

[0056] Step 3: The bag taking mechanism of the bag supply device delivers the material packaging bag between the clamping mechanisms 2 of the two adaptive clamping devices, and the cylinder telescopic rod 210 of the clamping claw cylinder 200 contracts to rotate the two clamping arms 205 toward each other around the second rotating shaft 208 and bring the two clamping plates 212 together to clamp the two sides of the material bag;

[0057] Step 4: When the bag is to be opened, the two suction cups of the bag opening mechanism hold the two sides of the material packaging bag and move to both sides to open the bag. Fig.11 As shown, the bag is opened in the direction of the "arrow", and the guide rod of the bag opening shrinking cylinder 16 extends to drive the two clamping mechanisms 2 to move toward each other, meeting the shrinking space required by the material bag when opening the bag; and the bag opening work is completed.

[0058] Specifically, when the variety required by the above steps is processed and replaced with other varieties, the motor 12 drives the screw 6 to rotate and drive the mounting seat 3 to move axially along the screw 6, and adjusts the distance between the detection plate 22 and the sensor 21 until the clamping spacing of the required variety packaging bag is reached; then repeat the above four steps to complete the bag opening.

[0059] The above shows and describes the basic principles, main features and characteristics of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. An adaptive clamping device for a vacuum packaging machine, characterized in that: The invention comprises a support (1), wherein the support (1) is provided with a pushing mechanism and a driving transmission mechanism, wherein the pushing mechanism is provided with a clamping mechanism (2), wherein the clamping mechanism (2) is used to clamp the edge of a packaging bag; the pushing mechanism is used to push the clamping mechanism (2) to a desired position, and the driving transmission mechanism is used to drive the pushing mechanism and the clamping mechanism (2) thereon to corresponding positions; The driving transmission mechanism comprises a clamping seat (4), a connecting seat (5), a screw rod (6), a screw sleeve (7), a first guide rail (13), and a rear slider (14); the pushing mechanism comprises a mounting seat (3), a front slider (15), and a bag opening shrinking cylinder (16); the bracket (1) is fixedly connected to the first guide rail (13), the first guide rail (13) is sleeved with a front slider (15) slidably connected thereto, the front slider (15) is mounted with a clamping mechanism (2), the first guide rail (13) is sleeved with a rear slider (14) slidably connected thereto, and the front slider (15) is mounted with a clamping mechanism (2). The rear slider (14) is fixedly connected to a holder (4), a bag opening shrinking cylinder (16) is installed on the holder (4), and the piston rod end of the bag opening shrinking cylinder (16) is connected to the clamping mechanism (2); the bracket (1) is rotatably connected to a screw rod (6), a threaded sleeve (7) is sleeved on the screw rod (6), and the threaded sleeve (7) and the screw rod (6) are matched by threads, and the threaded sleeve (7) is fixedly connected to the holder (4), and the screw rod (6) rotates to drive the threaded sleeve (7) to move along the axial direction of the screw rod (6) and drive the holder (4) and the components fixedly connected thereto to move; The bracket (1) comprises a first bottom plate (100), a first vertical plate (101), a second vertical plate (102), a first reinforcing plate (103), a first fixing plate (104), and a mounting plate (105); wherein the first bottom plate (100) is arranged horizontally, the first bottom plate (100) is fixedly connected to the second vertical plate (102) arranged vertically thereto, the second vertical plate (102) is fixedly connected to the first fixing plate (104), the first fixing plate (104) is arranged parallel to the first bottom plate (100), one side of the second vertical plate (102) is fixedly connected to the first vertical plate (101), and the other side of the second vertical plate (102) is fixedly connected to the first reinforcing plate (103); the first fixing plate (104) is arranged parallel to the first bottom plate (100), 4) is fixedly connected to a mounting plate (105) perpendicular thereto, a motor (12) is fixedly mounted on the mounting plate (105), a driving wheel (8) is fixedly connected to the output shaft of the motor (12), a first bearing sleeve is fixedly mounted on the mounting plate (105), one end of the screw rod (6) is rotatably connected to the first bearing sleeve, a connecting seat (5) is fixedly connected to the first fixing plate (104), a second bearing sleeve is fixedly mounted on the connecting seat (5), and the other end of the screw rod (6) is rotatably connected to the second bearing sleeve; the end of the screw rod (6) is fixedly connected to a driven wheel (10), the driving wheel (8) and the driven wheel (10) are sleeved with the same transmission chain (9) and are transmitted through the transmission chain (9); A second reinforcing plate (106) is fixedly connected to the side wall of the mounting plate (105), and the second reinforcing plate (106) is perpendicular to the mounting plate (105); It also comprises a connecting guide rail (18), the connecting guide rail (18) being used for being fixedly connected to an external packaging production line, and blocks (20) being fixedly connected to both ends of the connecting guide rail (18), and the outer dimensions of the blocks (20) being larger than the cross-sectional dimensions of the connecting guide rail (18); a connecting slider (19) being slidably connected to the connecting guide rail (18), the first bottom plate (100) being fixedly connected to the connecting slider (19), and a fisheye joint (23) being fixedly connected to the second vertical plate (102), and the fisheye joint (23) being used for being connected to an external power device and thereby driving the clamping device to move along the connecting guide rail (18); The connecting seat (5) comprises a front panel (500), a second bottom plate (501) and a third reinforcing plate (502); the front panel (500) and the second bottom plate (501) are vertically arranged and fixedly connected; the third reinforcing plate (502) is located on the rear side of the front panel (500) and is fixedly connected to the left and right sides of the second bottom plate (501); the second bottom plate (501) is fixedly connected to the first fixing plate (104).

2. The adaptive clamping device for a vacuum packaging machine according to claim 1, characterized in that: The clamping seat (4) comprises a vertically arranged cylinder mounting tailstock (40), a horizontally arranged connecting plate (401), and a clamping plate (402) on the other side of the connecting plate (401) and perpendicular thereto; the cylinder mounting tailstock (400) is fixedly connected to the connecting plate (401), and the clamping plate (402) is fixedly connected to one side of the connecting plate (401); the connecting plate (401) is installed on the rear slider (14), the cylinder body end of the bag mouth shrinking cylinder (16) is hinged on the cylinder mounting tailstock (40), and the clamping plate (402) is fixedly connected to the screw sleeve (7).

3. The adaptive clamping device for a vacuum packaging machine according to claim 1, characterized in that: A buffer (11) is fixedly connected to the front panel (500), the buffer (11) corresponds to the position of the card plate (402), and the buffer (11) is used to buffer the card plate (402) running to the end of the buffer (11), thereby buffering the operation of the device; The card plate (402) is fixedly connected to a detection plate (22), and the front panel (500) is fixedly connected to a sensor (21); the sensor (21) is arranged opposite to the detection plate (22) and is used to measure the distance between the sensor and the detection plate (22).

4. The adaptive clamping device for a vacuum packaging machine according to claim 1, characterized in that: The mounting seat (3) comprises a third base plate (300) arranged horizontally and a support ear (301) arranged vertically to the third base plate (300); the support ear (301) is fixedly connected to the third base plate (300); the third base plate (300) is fixedly connected to the front slider (15); a floating joint (17) is fixedly connected to the support ear (301) and is connected to the end of the piston rod of the bag opening contraction cylinder (16) through the floating joint (17).

5. The adaptive clamping device for a vacuum packaging machine according to claim 1, characterized in that: The clamping mechanism (2) comprises a second fixing plate (201), the second fixing plate (201) is fixedly connected to the mounting seat (3), a clamping cylinder (200) is fixedly mounted on the second fixing plate (201), a fixing seat (202) is fixedly connected to the front end of the second fixing plate (201), a cover plate (211) is fixedly connected to the upper and lower ends of the fixing seat (202), and the end of the cylinder telescopic rod (210) of the clamping cylinder (200) is fixedly connected to a driving seat (203), and the driving seat (203) is a T-shaped component; the driving seat (203) is connected to the clamping cylinder (200) on both sides through the first rotating shaft (206), the cushion sleeve (209) and the four The four transmission plates (204) are rotatably connected, and the four transmission plates (204) are symmetrically arranged on the left and right sides of the driving seat (203) and at the two ends of the cushion sleeve (209); two clamping arms (205) are provided on both sides of the driving seat (203), and the clamping arms (205) are symmetrically arranged on both sides of the driving seat (203), and the four transmission plates (204) are hingedly connected to the clamping arms (205) by rotating pins (207) between each other; the middle part of the clamping arm (205) is hinged on the two cover plates (211) through a second rotating shaft (208); a clamping plate (212) is fixedly connected to the inner wall of the opposite side of the two clamping arms (205); and the inner wall of the clamping plate (212) is provided with concave and convex grooves that engage with each other.

6. A clamping method of an adaptive clamping device for a vacuum packaging machine, applied to the adaptive clamping device for a vacuum packaging machine according to claim 5, characterized in that: The clamping methods include: Step 1: symmetrically arrange two adaptive clamping devices and the clamping mechanisms (2) of the two adaptive clamping devices are arranged opposite to each other, and the distance between the sensors (21) and the detection plate (22) on the two clamping devices is set according to the width of the material bag opening; Step 2: According to the control program, the motor (12) drives the clamping mechanism (2) in the reverse direction to a preset position where the clamping plates (212) can clamp the two sides of the material bag; and the guide rod of the bag opening contraction cylinder (16) is in a contracted state; the two clamping arms (205) on the clamping mechanism (2) are driven by the extension of the cylinder telescopic rod (210) of the clamping claw cylinder (200) so that the two clamping arms (205) rotate in the reverse direction around the second rotating shaft (208), so that the two clamping plates (212) are in an open state; Step 3: The bag taking mechanism of the bag supply device delivers the material packaging bag between the clamping mechanisms (2) of the two adaptive clamping devices, and the cylinder telescopic rod (210) of the clamping claw cylinder (200) contracts to rotate the two clamping arms (205) toward each other around the second rotating shaft (208) and bring the two clamping plates (212) together to clamp the two sides of the material bag; Step 4: When the bag is to be opened, the two suction cups of the bag opening mechanism suck the two sides of the material packaging bag and move to the two sides to open the bag, and the guide rod of the bag opening shrinking cylinder (16) extends to drive the two clamping mechanisms (2) to move towards each other, so as to meet the shrinking space required by the material bag when opening the bag; and the bag opening work is completed; When the required variety is processed in the above steps and replaced with another variety, the motor (12) drives the screw (6) to rotate and drive the mounting seat (3) to move along the axial direction of the screw (6), and adjusts the distance between the detection plate (22) and the sensor (21) until the clamping distance of the required variety packaging bag is reached; then the above four steps are repeated to complete the bag opening.

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