Conveying device for PE bag production

Abstract

The invention relates to the technical field of conveying, and discloses a PE bag production conveying device which comprises a box body with an opening in the top, and a sealing cover used for sealing the top of the box body is detachably connected to the box body; a partition plate and a plurality of positioning mechanisms are arranged in the box body, each positioning mechanism comprises through holes formed in the two sides of the partition plate and a rotating shaft rotationally connected with the two sides of the inner wall of the box body, and a torsional spring is arranged between the rotating shaft and the box body; clamping plates penetrating through the through holes are arranged on the rotating shafts, the clamping plates can rotate in the through holes, and the distance between the two clamping plates is gradually reduced from top to bottom; and the driving mechanism is used for driving the two clamping plates in each positioning mechanism to be close to each other. According to the scheme, the problem that PE bags are prone to being damaged due to the fact that an existing device stores the PE bags is mainly solved.

Description

Technical Field

[0001] The invention relates to the technical field of conveying, and in particular to a conveying device for producing PE bags. Background Art

[0002] PE bags are transparent plastic bags that can be used for packaging clothing, bags, electronic products, etc. During the production of PE bags, a large number of PE bags will be transported, so they need to be transported through storage devices; traditional storage devices are fixed and cannot be adjusted. After use, they are inconvenient to store and take up space.

[0003] To solve the above problems, a Chinese patent with publication number CN210417348U discloses a storage device for PE particle packaging bags, including a folding plate, a folding rod, a first side plate and a second side plate, wherein the first side plate is movably mounted on the outer surface of one end of the folding plate, and the second side plate is movably mounted on the outer surface of the other end of the folding plate, a folding rod is movably mounted between the first side plate and the second side plate near the upper part of the folding plate, and a rotating cap is provided at the inner middle position of the folding rod, the folding rod and the first side plate and the second side plate are all connected and fixed by connecting rotating rods, and a sliding groove is provided on the inner surface of the side edge of the first side plate; the device can be unfolded and folded according to the needs of use, and can reduce the space occupied after folding.

[0004] The following problems exist during the use of the above-mentioned device: after the folding board is unfolded, batches of PE bags can be placed to achieve storage of the PE bags; however, such storage method makes the PE bags directly contact with the outside world, and thus may be contaminated with a lot of dust, and may even be damaged by the outside world during transportation to the destination; and, the PE bags are directly placed on the folding board, that is, the PE bags are in a movable state, and the PE bags are very likely to fall to the ground during transportation to the destination, causing damage to the PE bags. Summary of the invention

[0005] The present invention is intended to provide a conveying device for PE bag production, so as to solve the problem that the storage method of PE bags in the existing device easily causes damage to the PE bags.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a conveying device for PE bag production, comprising a box body with an opening at the top, and a sealing cover for sealing the top of the box body is detachably connected to the box body; a partition and a plurality of positioning mechanisms are provided in the box body, and the positioning mechanism includes through holes opened on both sides of the partition and a rotating shaft rotatably connected to both sides of the inner wall of the box body, and a torsion spring is provided between the rotating shaft and the box body; a clamping plate passing through the through hole is provided on the rotating shaft, and the clamping plate can rotate in the through hole, and the spacing between the two clamping plates gradually decreases from top to bottom; and also includes a driving mechanism for driving the two clamping plates in each positioning mechanism to be close.

[0007] The principles and advantages of this solution are:

[0008] 1. In this solution, the two clamping plates are close to each other so that the two clamping plates clamp the batch PE bags. Compared with the prior art, the batch PE bags are clamped and positioned by the two clamping plates, which prevents the batch PE bags from moving in the box and falling out of the box, thereby preventing the PE bags from being damaged.

[0009] 2. In this solution, the sealing cover is placed close to the top of the box, and the sealing cover is connected to the top of the box, so as to seal the top of the box to prevent batches of PE bags from falling out of the box, thereby preventing the PE bags from being damaged.

[0010] 3. Each positioning mechanism of this solution can clamp and position batches of PE bags, that is, it can clamp and position multiple groups of batches of PE bags at the same time, and the operation is simple.

[0011] Furthermore, the driving mechanism includes a plurality of driving parts, which include a bidirectional screw rotatably connected to the box body, a side plate fixed to the bottom of the partition and located on both sides of the bidirectional screw, both ends of the bidirectional screw are threadedly connected with nut seats, the nut seats are located below the partition, and the nut seats are slidably connected to the bottom of the box body; a slide groove is vertically provided on the nut seat, and a movable block passing through the through hole is connected in the slide groove, and the movable block can move vertically in the through hole and along the length direction of the bidirectional screw, and the movable block is abutted against the clamping plate; first inclined grooves are provided on both sides of the side walls of the side plate, and the spacing between the two first inclined grooves increases from top to bottom; a first auxiliary block is slidably connected in the first inclined groove, and the first auxiliary block is fixed to the movable block; and a power part for simultaneously driving multiple bidirectional screws to rotate is also included.

[0012] Through the above arrangement, during the rotation of the bidirectional screw, the two nut seats approach each other along the length direction of the bidirectional screw; during the movement of the nut seats, the nut seats drive the movable block to move synchronously, so that the movable block moves upward according to the movement of the first auxiliary block along the path of the first inclined groove, and the upward movement of the movable block is used to squeeze the clamping plate to rotate and approach the PE bag, and the torsion spring is deformed, that is, the two clamping plates are close to clamp the batch PE bags, thereby completing the positioning of the batch PE bags.

[0013] Furthermore, the power unit includes a circular shaft rotatably connected to the box body, a worm wheel fixedly connected to the bidirectional screw, and a power part for driving the circular shaft to rotate. The circular shaft is located below the partition, and the circular shaft and the bidirectional screw are vertically arranged. A plurality of worm segments are provided on the circular shaft, and the worm wheel is meshed with the worm segments.

[0014] Through the above arrangement, the circular shaft drives the worm segment to rotate, the worm segment meshes with the worm wheel to drive the worm wheel to rotate, and the worm wheel drives the bidirectional screw to rotate.

[0015] Furthermore, second inclined grooves are provided on both sides of the side walls of the clamping plate, and the spacing between the two second inclined grooves gradually decreases from top to bottom; a second auxiliary block is slidably connected in the second inclined groove, and a first spring is provided between the second auxiliary block and the second auxiliary groove; a clamping arm is provided at one end of the second auxiliary block, and a movable arm is provided at the other end of the second auxiliary block, and the movable arm is against the movable block.

[0016] Through the above arrangement, when the two nut seats are close to each other, the two movable blocks on both sides of the clamping plate are also close to each other, so that the two movable blocks squeeze the two movable arms close to each other, and the movable arms move along the path of the second inclined groove through the second auxiliary block to drive the clamping arm to move downward. At the same time, the clamping arm will also approach the PE bag, and the first spring is compressed, that is, the two clamping arms move downward and the two clamping arms approach to clamp the batch PE bag, thereby completing the positioning of the batch PE bag; therefore, the left and right sides of the batch PE bag can be clamped by the two clamping plates, and the front and back sides of the batch PE bag can be clamped by the two clamping arms on both sides of the clamping plate, that is, the positioning effect of the batch PE bag is better.

[0017] Furthermore, a top plate is provided on the box body near the top of the box body, and a plurality of limiting parts are provided on the top plate. The limiting parts include a top hole opened on the top plate and a fixed plate fixedly connected to the top plate. A first wedge block is provided in the top hole, and the first wedge block can move vertically in the top hole. A limiting groove is provided on the side wall of the first wedge block; a second wedge block for being squeezed by the first wedge block is slidably connected to the fixed plate, a second spring is provided between the second wedge block and the fixed plate, the second wedge block is located on the movement trajectory of the first wedge block, and the second wedge block is slidably matched with the limiting groove; and an adjusting mechanism is also included which drives the first wedge block to move vertically as the spacing between two adjacent clamping plates of two adjacent positioning mechanisms changes.

[0018] Through the above arrangement, since the two clamping plates in the positioning mechanism rotate closer, the adjacent two clamping plates of the two adjacent positioning mechanisms move away, that is, the distance between the adjacent two clamping plates of the two adjacent positioning mechanisms becomes larger, and the first wedge block is driven to move upward through the adjusting mechanism, so that the first wedge block squeezes the second wedge block to move laterally, and the second spring is compressed; the outer tube continues to move upward, so that the second wedge block is abutted against the side wall of the first wedge block; the outer tube continues to move upward again, and when positioning the batch PE bags, the second wedge block is laterally opposite to the limiting groove, and the second wedge block slides into the limiting groove under the action of the second spring, thereby realizing the limitation of the first wedge block, and then limiting the adjacent two clamping plates of the two adjacent positioning mechanisms, thereby enhancing the positioning effect of the batch PE bags.

[0019] Furthermore, the adjustment mechanism includes a plurality of adjustment parts, which include an outer tube and an inner rod. The outer tube and the inner rod are respectively hinged to two adjacent clamping plates of two adjacent positioning mechanisms, and the inner rod is slidably connected to the inside of the outer tube; the first wedge block is fixed to the outer tube, and the first wedge block can move laterally in the top hole.

[0020] Through the above arrangement, since the two clamping plates in the positioning mechanism rotate closer, the adjacent two clamping plates of the two adjacent positioning mechanisms move away from each other, so that the inner rod slides in the outer tube; and, the adjacent two clamping plates of the two adjacent positioning mechanisms move away from each other by rotating, thereby also driving the outer tube and the inner rod to move upward, and the outer tube drives the first wedge block to move upward.

[0021] Furthermore, a number of support shafts are equidistantly connected to the partition in a rotatable manner along the length direction of the partition, the support shaft is located between two adjacent clamping plates of two adjacent positioning mechanisms, an elliptical block is coaxially connected to the support shaft, and the two long axis ends of the elliptical block can simultaneously abut against two adjacent clamping plates of two adjacent positioning mechanisms; and a linkage mechanism is also included that drives multiple support shafts to rotate as the circular shaft rotates.

[0022] Through the above arrangement, the support shaft rotates, and the support shaft drives the elliptical block to rotate. When positioning the batch of PE bags, the two long axis ends of the elliptical block respectively abut against the adjacent two clamping plates of the two adjacent positioning mechanisms, thereby limiting and supporting the adjacent two clamping plates of the two adjacent positioning mechanisms, thereby improving the stability of the positioning of the batch PE bags.

[0023] Furthermore, the linkage mechanism includes a one-way screw segment fixed to the circular shaft and a gear coaxially connected to the support shaft. A linkage block is threadedly connected to the one-way screw segment, and the linkage block is slidably connected to the bottom of the box body. A rack is provided on the linkage block, and the gear is located on the motion trajectory of the rack, and the gear can engage with the rack.

[0024] Through the above arrangement, during the rotation of the circular shaft, the circular shaft drives the unidirectional screw segment to rotate, so that the linkage block moves along the axial direction of the circular shaft, and the linkage block drives the rack to move synchronously, so that the rack meshes with the gear to drive the gear to rotate, and the gear drives the support shaft to rotate.

[0025] Furthermore, a groove is provided on the top of the box body, a first magnet is provided in the groove, a second magnet is provided on the sealing cover, the second magnet can move vertically in the groove, and the first magnet can attract the second magnet.

[0026] Through the above arrangement, the sealing cover is placed close to the top of the box body, so that the second magnet extends into the groove and is attracted to the first magnet, and the sealing cover is connected to the top of the box body, thereby sealing the top of the box body. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is an exploded schematic diagram of an embodiment of a conveying device for producing PE bags according to the present invention;

[0028] Figure 2 for Figure 1 A schematic diagram of the structure of the middle partition in a top-down view;

[0029] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0030] Figure 4 for Figure 1 A schematic diagram of the structure of the middle partition when viewed from above;

[0031] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0032] Figure 6 for Figure 4 Enlarged view of center C. DETAILED DESCRIPTION

[0033] The following is further described in detail through specific implementation methods:

[0034] The figure marks in the drawings of the specification include: box body 10, sealing cover 11, groove 12, second magnet 13, partition 20, through hole 21, clamping plate 22, second inclined groove 23, clamping arm 24, movable arm 25, bidirectional screw 30, side plate 31, nut seat 32, movable block 33, first inclined groove 34, first auxiliary block 341, circular shaft 40, worm gear 41, worm segment 42, motor 43, top plate 50, top hole 51, first wedge block 52, second wedge block 53, second spring 54, outer tube 55, inner rod 56, support shaft 60, elliptical block 61, one-way screw segment 62, gear 63, linkage block 64, rack 65.

[0035] Example

[0036] Basically as attached Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 , Attachment Figure 5 , Attachment Figure 6 As shown: a conveying device for PE bag production, including a box body 10 with an opening at the top, and a sealing cover 11 for sealing the top of the box body 10 is detachably connected to the box body 10. Specifically: a groove 12 is opened on the top of the box body 10, a first magnet is fixedly connected in the groove 12, and a second magnet 13 is fixedly connected to the sealing cover 11. The second magnet 13 can move vertically in the groove 12, and the first magnet can attract the second magnet 13; when the second magnet 13 extends into the groove 12 and is attracted to the first magnet, the sealing cover 11 is connected to the top of the box body 10, so as to seal the top of the box body 10.

[0037] A partition 20 and a plurality of positioning mechanisms are provided in the box body 10, and the partition 20 is fixedly connected to the box body 10; a plurality of positioning mechanisms are equidistantly arranged along the length direction of the partition 20, and the positioning mechanisms include through holes 21 opened on both sides of the partition 20, and a rotating shaft rotatably connected to both sides of the inner wall of the box body 10, and two through holes 21 are arranged on both sides of the partition 20 along the width direction of the partition 20; the rotating shaft is located below the partition 20, and a torsion spring is fixedly connected between the rotating shaft and the box body 10, and a clamping plate 22 passing through the through hole 21 is fixedly connected to the rotating shaft, and the clamping plate 22 can rotate in the through hole 21; the spacing between the two clamping plates 22 gradually decreases from top to bottom, that is, the spacing between the two clamping plates 22 gradually decreases from the upper end of the clamping plate 22 to the lower end of the clamping plate 22.

[0038] The invention also includes a driving mechanism for driving the two clamping plates 22 in each positioning mechanism to be close to each other, and the driving mechanism includes a plurality of driving parts, and the plurality of driving parts are equidistantly arranged along the length direction of the partition 20; the driving part includes a bidirectional screw 30 rotatably connected to the box body 10, and a side plate 31 fixed to the bottom of the partition 20 and located on both sides of the bidirectional screw 30, and both ends of the bidirectional screw 30 are threadedly connected with a nut seat 32, and the nut seat 32 is located below the partition 20, and the nut seat 32 is slidably connected to the bottom of the box body 10; a sliding groove is vertically opened on the nut seat 32, and a movable block 33 passing through the through hole 21 is connected in the sliding groove, and the movable block 33 can move vertically in the through hole 21 and along the length direction of the bidirectional screw 30, and the movable block 33 and the clamping plate 22 are always against each other; the side plate 31 and the bottom of the box body 10 The side panels 31 are fixedly connected, and first inclined grooves 34 are provided on both sides of the side walls, and the spacing between the two first inclined grooves 34 increases from top to bottom; a first auxiliary block 341 is slidably connected in the first inclined groove 34, and the first auxiliary block 341 is fixedly connected to the movable block 33; it also includes a power unit for simultaneously driving a plurality of bidirectional screws 30 to rotate, the power unit includes a circular shaft 40 rotatably connected to the housing 10, a worm gear 41 fixedly connected to the bidirectional screw 30, and a power member for driving the circular shaft 40 to rotate, the circular shaft 40 is located below the partition 20, the circular shaft 40 is vertically arranged with the bidirectional screw 30, a plurality of worm segments 42 are fixedly connected to the circular shaft 40, and the worm gear 41 is meshed with the worm segment 42; the power member is a motor 43, the motor 43 is fixedly connected to the housing 10, and the output shaft of the motor 43 is coaxially connected to the circular shaft 40.

[0039] Second inclined grooves 23 are provided on both sides of the side walls of the clamping plate 22, and the spacing between the two second inclined grooves 23 gradually decreases from top to bottom; a second auxiliary block is slidably connected in the second inclined groove 23, and a first spring is fixedly connected between the second auxiliary block and the second auxiliary groove; a clamping arm 24 is fixedly connected to one end of the second auxiliary block, and a movable arm 25 is fixedly connected to the other end of the second auxiliary block, and the clamping arm 24 is located between the two clamping plates 22 in the positioning mechanism, and the movable arm 25 is always against the movable block 33.

[0040] A top plate 50 is fixedly connected to the top of the box body 10, and a plurality of limit parts are equidistantly arranged on the top plate 50 along the length direction of the top plate 50. The limit parts include a top hole 51 opened on the top plate 50 and a fixed plate fixed to the top plate 50. A first wedge block 52 is arranged in the top hole 51. The first wedge block 52 can move vertically in the top hole 51. A limit groove is arranged on the side wall of the first wedge block 52. A second wedge block 53 for being squeezed by the first wedge block 52 is slidably connected to the fixed plate. A second spring 54 is fixedly connected between the second wedge block 53 and the fixed plate. The second wedge block 53 The second wedge block 53 is located on the movement trajectory of the first wedge block 52 and is slidably matched with the limit groove; it also includes an adjustment mechanism that drives the first wedge block 52 to move vertically as the spacing between the adjacent two clamping plates 22 of the two adjacent positioning mechanisms changes, and the adjustment mechanism includes a plurality of adjustment parts, the adjustment part includes an outer tube 55 and an inner rod 56, the outer tube 55 and the inner rod 56 are respectively hinged to the adjacent two clamping plates 22 of the two adjacent positioning mechanisms, and the inner rod 56 is slidably connected to the inside of the outer tube 55; the first wedge block 52 is fixed to the outer tube 55, and the first wedge block 52 can move laterally in the top hole 51.

[0041] A plurality of support shafts 60 are rotatably connected to the partition 20 at equal intervals along the length direction of the partition 20, the support shaft 60 is located between two adjacent clamping plates 22 of two adjacent positioning mechanisms, an elliptical block 61 is coaxially connected to the support shaft 60, and the two long axis ends of the elliptical block 61 can simultaneously abut against two adjacent clamping plates 22 of two adjacent positioning mechanisms; it also includes a linkage mechanism that drives multiple support shafts 60 to rotate as the circular shaft 40 rotates, the linkage mechanism includes a one-way screw segment 62 fixedly connected to the circular shaft 40, and a gear 63 coaxially connected to the support shaft 60, a linkage block 64 is threadedly connected to the one-way screw segment 62, the linkage block 64 is slidably connected to the bottom of the box body 10, a rack 65 is fixed to the linkage block 64, the gear 63 is located on the motion trajectory of the rack 65, and the gear 63 can engage with the rack 65.

[0042] The specific implementation process is as follows:

[0043] When in use, a batch of PE bags is placed between the two clamping plates 22 in the positioning mechanism, and also between the clamping arms 24 on both sides of the clamping plates 22; since the distance between the two clamping plates 22 gradually decreases from top to bottom, it is convenient for staff to store and retrieve batches of PE bags.

[0044] Start the motor 43, the output shaft of the motor 43 drives the circular shaft 40 to rotate, the circular shaft 40 drives the worm segment 42 to rotate, the worm segment 42 meshes with the worm wheel 41 to drive the worm wheel 41 to rotate, and the worm wheel 41 drives the bidirectional screw 30 to rotate, so that the two nut seats 32 are close to each other along the length direction of the bidirectional screw 30; during the movement of the nut seat 32, the nut seat 32 drives the movable block 33 to move synchronously, so that the movable block 33 moves upward according to the path movement of the first auxiliary block 341 along the first inclined groove 34, and the movable block 33 moves upward to squeeze the clamping plate 22 to rotate and approach the PE bag, and the torsion spring is deformed, that is, the two clamping plates 22 are close to clamp the batch PE bag, and the motor 43 is turned off at this time, that is, the positioning of the batch PE bag is completed, and the batch PE bag is prevented from moving in the box body 10, and the batch PE bag is prevented from falling from the box body 10, thereby preventing the PE bag from being damaged.

[0045] While the two nut seats 32 are approaching, the two movable blocks 33 on both sides of the clamping plate 22 are also approaching, so that the two movable blocks 33 squeeze the two movable arms 25 to be close, and the movable arms 25 move along the path of the second inclined groove 23 through the second auxiliary block to drive the clamping arm 24 to move downward. At the same time, the clamping arm 24 will also approach the PE bag, and the first spring is compressed, that is, the two clamping arms 24 move downward and the two clamping arms 24 approach to clamp the batch PE bag, thereby completing the positioning of the batch PE bag; therefore, the left and right sides of the batch PE bag can be clamped by the two clamping plates 22, and the front and back sides of the batch PE bag can be clamped by the two clamping arms 24 on both sides of the clamping plate 22, that is, the positioning effect of the batch PE bag is better.

[0046] As the two clamping plates 22 in the positioning mechanism rotate toward each other, the adjacent two clamping plates 22 of the two adjacent positioning mechanisms move away from each other, so that the inner rod 56 slides in the outer tube 55; and, the adjacent two clamping plates 22 of the two adjacent positioning mechanisms move away from each other by rotating, so that the outer tube 55 and the inner rod 56 can also be driven to move upward, and the outer tube 55 drives the first wedge block 52 to squeeze the second wedge block 53 to move laterally, and the second spring 54 is compressed; the outer tube 55 continues to move upward, so that the second wedge block 53 is against the side wall of the first wedge block 52; the outer tube 55 continues to move upward again, and when positioning the batch PE bags, the second wedge block 53 is laterally opposite to the limiting groove, and the second wedge block 53 slides into the limiting groove under the action of the second spring 54, thereby realizing the limitation of the first wedge block 52, and then limiting the adjacent two clamping plates 22 of the two adjacent positioning mechanisms, thereby enhancing the positioning effect of the batch PE bags.

[0047] During the rotation of the circular shaft 40, the circular shaft 40 drives the unidirectional screw segment 62 to rotate, so that the linkage block 64 moves along the axial direction of the circular shaft 40, and the linkage block 64 drives the rack 65 to move synchronously, so that the rack 65 engages with the gear 63 to drive the gear 63 to rotate, and the gear 63 drives the support shaft 60 to rotate, and the support shaft 60 drives the elliptical block 61 to rotate. When positioning the batch PE bags, the two long axis ends of the elliptical block 61 respectively abut against the adjacent two clamping plates 22 of the two adjacent positioning mechanisms, thereby limiting and supporting the adjacent two clamping plates 22 of the two adjacent positioning mechanisms, thereby improving the stability of the positioning of the batch PE bags.

[0048] After completing the positioning and storage of multiple groups of batch PE bags, the sealing cover 11 is moved close to the top of the box body 10, so that the second magnet 13 extends into the groove 12 and is attracted by the first magnet, and the sealing cover 11 is connected to the top of the box body 10, thereby sealing the top of the box body 10 to prevent the batch PE bags from falling out of the box body 10, thereby preventing the PE bags from being damaged.

[0049] The above is only an embodiment of the present invention, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A conveying device for PE bag production, characterized in that: It includes a box body with an opening at the top, and a sealing cover for sealing the top of the box body is detachably connected to the box body; a partition and a plurality of positioning mechanisms are arranged inside the box body, and the positioning mechanisms include through holes opened on both sides of the partition and a rotating shaft rotatably connected to both sides of the inner wall of the box body, and a torsion spring is arranged between the rotating shaft and the box body; a clamping plate passing through the through hole is arranged on the rotating shaft, and the clamping plate can rotate in the through hole, and the spacing between the two clamping plates gradually decreases from top to bottom; and it also includes a driving mechanism for driving the two clamping plates in each positioning mechanism to be close to each other.

2. The conveying device for PE bag production according to claim 1, characterized in that: The driving mechanism includes a plurality of driving parts, which include a bidirectional screw rotatably connected to the box body, a side plate fixed to the bottom of the partition and located on both sides of the bidirectional screw, both ends of the bidirectional screw are threadedly connected with nut seats, the nut seats are located below the partition, and the nut seats are slidably connected to the bottom of the box body; a slide groove is vertically provided on the nut seat, and a movable block passing through the through hole is connected in the slide groove, and the movable block can move vertically in the through hole along the length direction of the bidirectional screw, and the movable block is abutted against the clamping plate; first inclined grooves are provided on both sides of the side walls of the side plate, and the spacing between the two first inclined grooves increases from top to bottom; a first auxiliary block is slidably connected in the first inclined groove, and the first auxiliary block is fixed to the movable block; and a power part for simultaneously driving multiple bidirectional screws to rotate is also included.

3. The conveying device for PE bag production according to claim 2, characterized in that: The power unit includes a circular shaft rotatably connected to the box body, a worm wheel fixedly connected to the bidirectional screw and a power part for driving the circular shaft to rotate. The circular shaft is located below the partition, and the circular shaft and the bidirectional screw are vertically arranged. A plurality of worm segments are arranged on the circular shaft, and the worm wheel is meshed with the worm segments.

4. The conveying device for PE bag production according to claim 3, characterized in that: Second inclined grooves are provided on both sides of the side walls of the clamping plate, and the spacing between the two second inclined grooves gradually decreases from top to bottom; a second auxiliary block is slidably connected in the second inclined groove, and a first spring is provided between the second auxiliary block and the second auxiliary groove; a clamping arm is provided at one end of the second auxiliary block, and a movable arm is provided at the other end of the second auxiliary block, and the movable arm is against the movable block.

5. The conveying device for PE bag production according to claim 4, characterized in that: A top plate is provided on the box body near the top of the box body, and a plurality of limiting parts are provided on the top plate. The limiting parts include a top hole opened on the top plate and a fixed plate fixedly connected to the top plate. A first wedge block is provided in the top hole, and the first wedge block can move vertically in the top hole. A limiting groove is provided on the side wall of the first wedge block; a second wedge block for being squeezed by the first wedge block is slidably connected to the fixed plate, a second spring is provided between the second wedge block and the fixed plate, the second wedge block is located on the movement trajectory of the first wedge block, and the second wedge block is slidably matched with the limiting groove; and an adjusting mechanism is also included, which drives the first wedge block to move vertically as the spacing between two adjacent clamping plates of two adjacent positioning mechanisms changes.

6. The conveying device for PE bag production according to claim 5, characterized in that: The adjustment mechanism includes several adjustment parts, which include an outer tube and an inner rod. The outer tube and the inner rod are respectively hinged to two adjacent clamping plates of two adjacent positioning mechanisms, and the inner rod is slidably connected to the inside of the outer tube; the first wedge block is fixed to the outer tube, and the first wedge block can move laterally in the top hole.

7. The conveying device for PE bag production according to claim 6, characterized in that: Several support shafts are equidistantly connected to the partition in a rotatable manner along the length direction of the partition, the support shaft is located between two adjacent clamping plates of two adjacent positioning mechanisms, an elliptical block is coaxially connected to the support shaft, and the two long axis ends of the elliptical block can simultaneously abut against two adjacent clamping plates of two adjacent positioning mechanisms; it also includes a linkage mechanism that drives multiple support shafts to rotate as the circular shaft rotates.

8. The conveying device for PE bag production according to claim 7, characterized in that: The linkage mechanism includes a one-way screw segment fixed to the circular shaft and a gear coaxially connected to the support shaft. A linkage block is threadedly connected to the one-way screw segment, and the linkage block is slidably connected to the bottom of the box. A rack is provided on the linkage block, and the gear is located on the motion trajectory of the rack, and the gear can mesh with the rack.

9. The conveying device for PE bag production according to claim 8, characterized in that: A groove is arranged on the top of the box body, a first magnet is arranged in the groove, a second magnet is arranged on the sealing cover, the second magnet can move vertically in the groove, and the first magnet can attract the second magnet.

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