CN217534213U - Conveying line with adjustable conveying distance and feeding and discharging machine - Google Patents

Abstract

The utility model discloses a conveying line with adjustable conveying distance and a feeding and discharging machine, which comprises a bottom plate, a fixed side plate, a movable side plate, a conveying belt, a guide rod, a width adjusting device and a locking device; the fixed side plate is fixedly arranged on the bottom plate; the movable side plate and the fixed side plate are arranged oppositely and can be connected to the bottom plate in a sliding mode along the direction close to or far away from the fixed side plate; the conveying belts are respectively arranged on the fixed side plate and the movable side plate and are oppositely arranged; one end of the guide rod is fixedly connected to the fixed side plate, and the other end of the guide rod movably penetrates through the movable side plate; the width adjusting device is connected with the fixed side plate and the movable side plate and is used for driving the movable side plate to slide so as to adjust the width between the fixed side plate and the movable side plate; when the locking device is in a locking state, the guide rod and the movable side plate can be locked, and when the locking device is in an unlocking state, the movable side plate can slide along the guide rod. The utility model discloses a width between the transfer chain can be adjusted to adjustable transfer chain of carrying interval, makes the transport demand of the carrier that equipment can satisfy different widths.

Description

Conveying line with adjustable conveying distance and feeding and discharging machine

Technical Field

The utility model relates to a technical field is carried to the material, especially relates to an adjustable transfer chain of carrying interval and go up blanking machine.

Background

In the production and processing process, the conveying line plays an irreplaceable role in process connection and material conveying between an assembly line and production equipment and between the production equipment and the production equipment, and is an essential important component in automatic production. The commonly used conveying mechanisms include a belt conveyor line, a plate conveyor line, a bucket conveyor line and the like, wherein the belt conveyor line has a wider application range.

In the prior art, because the carriers required to be conveyed are different in width, the carriers are required to be conveyed by different conveying lines, the carriers are inconvenient to use, the cost is high, the time consumption is long, and the production requirements cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides an adjustable transfer chain of carrying interval, it can be applied to the material of 3C electronic product and carry to can adapt to the transport demand of the carrier of different widths, improve equipment's practicality.

The utility model also provides a go up blanking machine of transfer chain with above-mentioned adjustable transport interval.

According to the utility model discloses a transfer chain of adjustable conveying interval of first aspect embodiment, including bottom plate, fixed side plate, movable side plate, conveyer belt, guide arm, transfer wide device and locking device; the fixed side plate is fixedly arranged on the bottom plate; the movable side plate and the fixed side plate are arranged oppositely and can be connected to the bottom plate in a sliding manner along the direction close to or far away from the fixed side plate; the conveying belts are respectively arranged on the fixed side plate and the movable side plate and are oppositely arranged; one end of the guide rod is fixedly connected to the fixed side plate, and the other end of the guide rod movably penetrates through the movable side plate; the width adjusting device is connected with the fixed side plate and the movable side plate and is used for driving the movable side plate to slide so as to adjust the distance between the fixed side plate and the movable side plate; the locking device is arranged on the movable side plate; when the locking device is in the locking state, the guide rod and the movable side plate can be locked, and when the locking device is in the unlocking state, the movable side plate can slide along the guide rod.

According to the utility model discloses adjustable transfer chain of carrying interval of first aspect embodiment has following beneficial effect at least:

when the distance between the movable side plate and the fixed side plate needs to be adjusted, the width adjusting device drives the movable side plate to be close to or far away from the fixed side plate, so that the distance between the movable side plate and the fixed side plate is adjusted, and the equipment can meet the conveying requirements of carriers with different widths; meanwhile, the guide rod guides the movement of the movable side plate, so that the movable side plate can move along a straight line all the time; in addition, the guide rod can be locked or loosened through the locking device, when the movable side plate needs to be moved, the locking device is firstly loosened to enable the movable side plate to be in an unlocking state, then the movable side plate is driven to slide along the guide rod through the width adjusting device, when the movable side plate is moved in place, the locking device is locked to enable the movable side plate to be in a locking state, and therefore the movable side plate is fixed, the phenomenon that the movable side plate is displaced in the material conveying process is avoided, and stable conveying of a carrier is guaranteed.

According to the utility model discloses the transfer chain of adjustable transport interval of some embodiments of first aspect, locking device is including the holder, and when the holder presss from both sides the tight guide arm that is fixed in, locking device is in the locking state.

According to the utility model discloses the transfer chain of adjustable transport interval of some embodiments of first aspect is provided with the opening in centre gripping hole and intercommunication centre gripping hole on the holder, and the centre gripping hole is worn to locate by the guide arm, and the open-ended both sides wall is provided with screw hole and connect the via hole respectively, wears to be equipped with locking screw in screw hole and the connect the via hole.

According to the utility model discloses the adjustable transfer chain of carrying interval of some embodiments of first aspect is provided with the guide rail that is on a parallel with the guide arm on the bottom plate, moves the curb plate bottom and is provided with the slider with guide rail sliding connection.

According to the utility model discloses the transfer chain of adjustable transport interval of some embodiments of first aspect, a pot head of lead screw is equipped with the bearing, and the bearing sets up on deciding the curb plate.

According to the utility model discloses the adjustable transfer chain of carrying interval of some embodiments of first aspect transfers wide device including lead screw and hand wheel, and the one end of lead screw is rotated and is connected in deciding the curb plate, and the other end is provided with the hand wheel, and the lead screw with move curb plate threaded connection.

According to the utility model discloses the transfer chain of adjustable transport interval of some embodiments of the first aspect moves the curb plate and decides and all is provided with driving pulley and driven pulley on relative two faces between the curb plate, and on the conveyer belt cover established and driving pulley and driven pulley, move the curb plate and decide and all be provided with the motor on two faces that deviate from each other between the curb plate, the output shaft of motor passes and moves the curb plate or decides the curb plate, and connects driving pulley.

According to the utility model discloses the transfer chain of adjustable transport interval of some embodiments of first aspect moves the curb plate and decides two relative face tops between the curb plate and all is provided with the bearing strip, and the bearing strip is located the conveyer belt inboard, and the upper surface and the conveyer belt medial surface butt of bearing strip.

According to the utility model discloses the transfer chain of adjustable transport interval of some embodiments of first aspect moves the curb plate and decides two relative face tops between the curb plate and all is provided with spacing, spacing be located bearing strip top, and bearing strip between form the spacing groove that allows the conveyer belt to pass, spacing width is less than the width of conveyer belt.

According to the utility model discloses a blanking machine on some embodiments of second aspect, including transfer chain and the carrier of above-mentioned first aspect embodiment, the both sides of carrier are born respectively on deciding the curb plate and moving the conveyer belt on the curb plate.

According to the utility model discloses the material loading and unloading machine of some embodiments of second aspect has following beneficial effect at least:

through the transfer chain of the adjustable conveying interval that adopts above-mentioned first aspect embodiment, can adjust the interval between the both sides conveyer belt in the transfer chain for go up the unloading machine and can adapt to the transport demand of the not unidimensional carrier, thereby promote the commonality of going up unloading.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic structural view of a conveying line with an adjustable conveying distance according to an embodiment of the present invention, in a state where a movable side plate is away from a fixed side plate;

FIG. 2 is a schematic structural view of the conveying line with adjustable conveying distance shown in FIG. 1, in a state where a movable side plate is close to a fixed side plate;

FIG. 3 is a schematic view of the conveyor line with adjustable conveying distance shown in FIG. 1 from another perspective;

FIG. 4 is a schematic structural view of the movable side plate shown in FIG. 1;

fig. 5 is a schematic structural view of the locking device shown in fig. 1.

100. A base plate; 110. a guide rail; 120. a slider; 200. fixing a side plate; 300. a movable side plate; 310. perforating; 400. a conveyor belt; 410. a driving pulley; 420. a driven pulley; 430. a motor; 440. tensioning the belt pulley; 500. a guide bar; 600. a width adjusting device; 610. a screw rod; 620. a hand wheel; 630. a nut sleeve; 640. a bearing; 700. a locking device; 710. a clamping member; 720. A clamping hole; 730. an opening; 740. a threaded hole; 750. a connecting through hole; 800. a support strip; 900. a limiting strip; 910. a limiting groove; 920. and (4) a guide angle.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated in relation to the orientation description, such as up, down, left, right, front, rear, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, if there are first and second descriptions for distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the description of the present invention, unless there is an explicit limitation, the terms such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the terms in the present invention by combining the specific contents of the technical solution.

The conveying line with adjustable conveying distance according to the embodiment of the first aspect of the present invention is described below with reference to fig. 1 to 5.

Referring to fig. 1 and 2, the conveying line with the adjustable conveying distance according to the embodiment, which is applicable to material conveying of 3C electronic products, includes a bottom plate 100, a fixed side plate 200, a movable side plate 300, a conveying belt 400, a guide rod 500, a width adjusting device 600, and a locking device 700; the fixed side plate 200 is fixedly arranged on the bottom plate 100; the movable side plate 300 is arranged opposite to the fixed side plate 200 and can be connected to the bottom plate 100 in a sliding manner along a direction close to or far away from the fixed side plate 200; the conveyer belt 400 is respectively arranged on the fixed side plate 200 and the movable side plate 300 and is oppositely arranged; one end of the guide rod 500 is fixedly connected to the fixed side plate 200, and the other end thereof movably penetrates through the movable side plate 300; the width adjusting device 600 is connected to the fixed side plate 200 and the movable side plate 300, and is used for driving the movable side plate 300 to slide so as to adjust the distance between the fixed side plate 200 and the movable side plate 300; the locking device 700 is arranged on the movable side plate 300; when the locking device 700 is in a locked state, the guide rod 500 and the movable side plate 300 can be locked, and when the locking device 700 is in an unlocked state, the movable side plate 300 can slide along the guide rod 500.

It can be understood that in the present embodiment, the carrier is carried and conveyed by the conveyor belts 400, wherein the two conveyor belts 400 are respectively disposed on the opposite surfaces of the fixed side plate 200 and the movable side plate 300, so that the two conveyor belts 400 are disposed oppositely; when the carrier needs to be transported, two ends of the bottom surface of the carrier are respectively arranged on the transporting surfaces of the transporting belts 400 of the movable side plate 300 and the fixed side plate 200, and then the two transporting belts 400 transport the carrier through rotation.

It can be understood that, in the embodiment, the width adjusting device 600 is used for driving the movable side plate 300 to slide, so as to adjust the distance between the movable side plate 300 and the fixed side plate 200, so that the conveying line can adapt to the conveying requirements of carriers with different sizes; specifically, in this embodiment, the movable side plate 300 can slide by means of the screw 610, for example, one end of the screw 610 is rotatably connected to the fixed side plate 200, and the other end is in threaded connection with the movable side plate 300, and during adjustment, the movable side plate 300 is driven to slide along the screw 610 by rotating the screw 610, so that the movable side plate 300 moves away from or approaches to the fixed side plate 200; or, in some other embodiments, the movable side plate 300 may be driven to slide by a linear motor, specifically, the movable side plate 300 is connected to the linear motor, and the linear motor drives the movable side plate 300 to slide, so that the movable side plate 300 moves away from or approaches the fixed side plate 200.

It can be understood that, in the present embodiment, the guide rod 500 is used for guiding the sliding of the movable side plate 300, so that the movable side plate 300 can always move along a straight line, and the sliding of the movable side plate 300 is more stable and reliable; it should be understood that one end of the guide rod 500 connected to the stationary side plate 200 may be set as a fixed end, and then one end of the guide rod 500 movably connected to the movable side plate 300 may be set as a movable end. Specifically, in the present embodiment, the fixed end of the guide rod 500 may be locked and fixed by providing the locking device 700 on the fixed side plate 200, specifically, the fixed end of the guide rod 500 passes through the fixed side plate 200 and then is placed in the locking device 700, and then the locking device 700 is locked, so that the fixed end of the guide rod 500 and the fixed side plate 200 are locked and fixed; in addition, in other embodiments, the fixed end of the guide rod 500 may be fixedly connected to the fixed side plate 200 by welding.

It can be understood that, in the present embodiment, the locking device 700 is used to lock the guide rod 500 and the movable side plate 300, so that the movable side plate 300 can be kept stationary after moving to a certain position, thereby preventing the phenomenon of displacement during the transportation of the carrier, and further preventing the transportation of the carrier from being affected.

Specifically, when the distance between the movable side plate 300 and the fixed side plate 200 needs to be adjusted, the width adjusting device 600 drives the movable side plate 300 to approach or separate from the fixed side plate 200, so as to adjust the distance between the movable side plate 300 and the fixed side plate 200, and the equipment can meet the conveying requirements of carriers with different widths; meanwhile, the guide rod 500 guides the movement of the movable side plate 300, so that the movable side plate 300 can move along a straight line all the time; in addition, the guide rod 500 can be locked or unlocked through the locking device 700, when the movable side plate 300 needs to be moved, the locking device 700 is firstly unlocked to enable the movable side plate 300 to be in an unlocked state, then the width adjusting device 600 drives the movable side plate 300 to slide along the guide rod 500, and when the movable side plate 300 is moved in place, the locking device 700 is locked to enable the movable side plate 300 to be in a locked state, so that the movable side plate 300 is fixed, the phenomenon that the movable side plate 300 is displaced in the material conveying process is avoided, and stable conveying of carriers is guaranteed.

It will be appreciated that, with reference to fig. 1, 2 and 5, in the present embodiment, the locking device 700 includes a clamp 710, and when the clamp 710 is clamped to the guide 500, the locking device 700 is in a locked state.

It can be understood that, referring to fig. 1, 2 and 5, in the present embodiment, the clamping member 710 is provided with a clamping hole 720 and an opening 730 communicating with the clamping hole 720, the guide rod 500 is inserted into the clamping hole 720, two side walls of the opening 730 are respectively provided with a threaded hole 740 and a connecting through hole 750, and locking screws (not shown in the drawings) are inserted into the threaded hole 740 and the connecting through hole 750.

Specifically, referring to fig. 4, the movable side plate 300 is provided with a through hole 310 corresponding to the clamping hole 720, the movable end of the guide rod 500 movably passes through the through hole 310 and the clamping hole 720, when the movable side plate 300 is moved to a proper position, the locking screw passes through the connecting through hole 750 to be matched and locked with the threaded hole 740, so that the clamping member 710 is in a locking state, and the guide rod 500 is locked, so as to lock the movable side plate 300, and when the movable side plate 300 needs to be moved, the locking screw is unscrewed, so that the clamping member 710 is in a loosening state, and the movable side plate 300 can slide to a required position along the guide rod 500.

It should be understood that in other embodiments, the locking device 700 may also be used to lock the guide 500 using a clip to engage a latch.

In addition, it is understood that in some other embodiments, the locking device 700 may also lock the movable side plate 300 by using a fixing bolt to cooperate with the guide rod 500, for example, a strip-shaped groove may be formed in the guide rod 500, the fixing bolts are respectively disposed on the movable side plates 300, and when the movable side plate 300 is moved to a proper position, one end of the fixing bolt may be screwed into the strip-shaped groove on the guide rod 500 to lock, so that the movable side plate 300 can be kept still after being moved to the proper position.

It can be understood that, referring to fig. 1 and 2, in the present embodiment, the bottom plate 100 is provided with a guide rail 110 parallel to the guide rod 500, and the bottom of the movable side plate 300 is provided with a slider 120 slidably connected with the guide rail 110; specifically, in order to make the movement of the movable side plate 300 more smoothly and stably, two guide rails 110 and two sliders 120 may be respectively provided, wherein the guide rails 110 are respectively disposed on both sides of the top surface of the base plate 100 and are parallel to the guide rods 500, the sliders 120 are respectively disposed on both sides of the bottom surface of the movable side plate 300 and are respectively slidably coupled to the corresponding guide rails 110, and the two sliders 120 may slide along the corresponding guide rails 110 when the movable side plate 300 is moved. Of course, the number of the sliders 120 and the guide rails 110 may be two, or in other embodiments, one, two, or more than three may be optionally provided, which may be set by a user according to actual situations, and the number of the sliders 120 and the guide rails 110 is not particularly limited herein.

It can be understood that, referring to fig. 1 and fig. 2, in the present embodiment, the width adjusting device 600 includes a screw 610 and a hand wheel 620, one end of the screw 610 is rotatably connected to the fixed side plate 200, the other end is provided with the hand wheel 620, and the screw 610 is in threaded connection with the movable side plate 300; during adjustment, according to the size requirement of the carrier, the hand wheel 620 rotates forward or backward, so as to drive the screw 610 to rotate forward or backward, and the movable side plate 300 moves away from or approaches to the fixed side plate 200.

It should be understood that, in some embodiments, the nut sleeve 630 threadedly coupled to the lead screw 610 is provided on the movable side plate 300, so that the sliding of the movable side plate 300 on the lead screw 610 is more stable.

It is understood that, referring to fig. 1, 2 and 3, in the present embodiment, one end of the screw 610 is sleeved with a bearing 640, and the bearing 640 is disposed on the fixed side plate 200. Specifically, the bearing 640 supports the lead screw 610 by means of rolling contact between elements, the lead screw 610 is rotatably arranged in the fixed side plate 200 through the bearing 640, and when the hand wheel 620 is rotated, the lead screw 610 can rotate in the bearing 640; through the arrangement of the bearing 640, the friction of the screw 610 in the rotating process is reduced, so that the rotating resistance of the screw 610 is smaller, and the rotating precision of the screw 610 can be ensured. In addition, the fixed side plate 200 is further provided with a bearing seat 650, and the bearing 640 is fixedly arranged in the bearing seat 650, so that the bearing 640 is more firmly installed.

It can be understood that, referring to fig. 1, fig. 2 and fig. 4, in this embodiment, a driving pulley 410 and a driven pulley 420 are disposed on two opposite surfaces between the movable side plate 300 and the fixed side plate 200, the conveying belt 400 is sleeved on the driving pulley 410 and the driven pulley 420, motors 430 are disposed on two surfaces of the movable side plate 300 and the fixed side plate 200, which are away from each other, and output shafts of the two motors 430 respectively penetrate through the movable side plate 300 and the fixed side plate 200 and are connected to the driving pulley 410. Specifically, the conveying belt 400 is wound around a driving pulley 410 and a driven pulley 420, so that the conveying belt 400 can be driven to rotate by the driving of a motor 430. In this embodiment, when the carrier needs to be transported, two ends of the bottom surface of the carrier are disposed on the transporting surfaces of the transporting belts 400 of the movable side plate 300 and the fixed side plate 200, the motor 430 drives the corresponding driving pulley 410 to rotate, and drives the driven pulley 420 to rotate through the transporting belt 400, and the transporting belt 400 rotates the transporting carrier.

It should be understood that, in some other embodiments, referring to fig. 1, 2 and 3, in order to keep the conveying belt 400 in a tensioned state all the time, two opposite surfaces between the movable side plate 300 and the fixed side plate 200 are further provided with tensioning pulleys 440, respectively, and the tensioning pulleys 440 are in contact with the conveying surface of the conveying belt 400 to tension the conveying belt 400; specifically, the movable side plate 300 and the fixed side plate 200 are respectively provided with two tensioning pulleys 440 and are respectively disposed on two sides above the driving pulley 410, so that the tensioning pulleys 440 and the driving pulley 410 are arranged in a triangular shape, thereby effectively ensuring the tensioning of the conveyor belt 400.

It can be understood that, referring to fig. 1, fig. 2 and fig. 3, in the present embodiment, the top of two opposite surfaces between the movable side plate 300 and the fixed side plate 200 is provided with the supporting strip 800, the supporting strip 800 is located inside the conveying belt 400, and the upper surface of the supporting strip 800 abuts against the inner side surface of the conveying belt 400. Specifically, when carrying the carrier, on the conveyer belt 400 was arranged in to the carrier, at this moment, bearing strip 800 supported the conveyer belt, avoided conveyer belt 400 to be crooked downwards under the carrier action of gravity, and then improved the support dynamics of conveyer belt 400 to the carrier, simultaneously, avoided conveyer belt 400 to break because of the carrier overweight to guarantee conveyer belt 400's life.

It can be understood that, referring to fig. 1, 2 and 3, in the present embodiment, the top of two opposite surfaces between the movable side plate 300 and the fixed side plate 200 are provided with a limiting strip 900, the limiting strip 900 is located above the supporting strip 800, and a limiting groove 910 allowing the conveying belt 400 to pass through is formed between the limiting strip 900 and the supporting strip 800, and the width of the limiting strip 900 is smaller than the width of the conveying belt 400; in this embodiment, the conveyor belt 400 is placed in the limiting groove 910 between the limiting strip 900 and the supporting strip 800 to limit the conveyor belt 400, and meanwhile, the movable side plate 300 is disposed opposite to the limiting strip 900 on the fixed side plate 200 to limit the carrier placed on the conveyor belt 400, thereby ensuring stable conveyance of the carrier; in addition, the conveyor belt 400 protrudes outward from the stopper bar 900, so that a space for carrying a carrier can be left between the conveyor belt 400 and the stopper bar 900.

It should be understood that, in some other embodiments, referring to fig. 1, 2 and 3, the two ends of the limiting bar 900 are provided with the guiding angles 920, and the guiding angles 920 are arranged to guide the carrier entering the conveying belt 400, so that the carrier can enter more smoothly.

The following description the utility model discloses material loading and unloading machine of second aspect embodiment, the utility model discloses material loading and unloading machine of second aspect embodiment is including the transfer chain and the carrier of above-mentioned first aspect embodiment, and the both sides of carrier bear respectively on the conveyer belt 400 on deciding curb plate 200 and moving the curb plate 300, through the adjustable transfer chain of carrying the interval that adopts above-mentioned first aspect embodiment, can adjust the interval between the conveyer belt 400 of both sides in the transfer chain for material loading and unloading machine can adapt to the transport demand of the carrier of unidimensional not, thereby promotes the transport efficiency of last unloading.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. The utility model provides an adjustable transfer chain of carrying interval which characterized in that includes:

a base plate;

the fixed side plate is fixedly arranged on the bottom plate;

the movable side plate is opposite to the fixed side plate and can be connected to the bottom plate in a sliding manner along the direction close to or far away from the fixed side plate;

the conveying belts are respectively arranged on the fixed side plate and the movable side plate and are oppositely arranged;

one end of the guide rod is fixedly connected to the fixed side plate, and the other end of the guide rod movably penetrates through the movable side plate;

the width adjusting device is connected with the fixed side plate and the movable side plate and is used for driving the movable side plate to slide so as to adjust the distance between the fixed side plate and the movable side plate;

the locking device is arranged on the movable side plate; when the locking device is in a locking state, the guide rod and the movable side plate can be locked, and when the locking device is in an unlocking state, the movable side plate can slide along the guide rod.

2. The conveyor line with adjustable conveying distance according to claim 1, wherein the locking device comprises a clamping piece, and when the clamping piece is clamped and fixed on the guide rod, the locking device is in the locking state.

3. The conveying line with the adjustable conveying distance according to claim 2, wherein the clamping piece is provided with a clamping hole and an opening communicated with the clamping hole, the guide rod penetrates through the clamping hole, two side walls of the opening are respectively provided with a threaded hole and a connecting through hole, and locking screws penetrate through the threaded hole and the connecting through hole.

4. The conveying line with the adjustable conveying distance according to any one of claims 1 to 3, wherein a guide rail parallel to the guide rod is arranged on the bottom plate, and a sliding block connected with the guide rail in a sliding manner is arranged at the bottom of the movable side plate.

5. The conveying line with the adjustable conveying distance according to any one of claims 1 to 3, wherein the width adjusting device comprises a screw rod and a hand wheel, one end of the screw rod is rotatably connected to the fixed side plate, the hand wheel is arranged at the other end of the screw rod, and the screw rod is in threaded connection with the movable side plate.

6. The conveying line with the adjustable conveying distance according to claim 5, wherein a bearing is sleeved on one end of the screw rod, and the bearing is arranged on the fixed side plate.

7. The conveying line with the adjustable conveying distance according to any one of claims 1 to 3, wherein a driving pulley and a driven pulley are arranged on two opposite surfaces between the movable side plate and the fixed side plate, the conveying belt is sleeved on the driving pulley and the driven pulley, motors are arranged on two surfaces, which are away from each other, between the movable side plate and the fixed side plate, and output shafts of the motors penetrate through the movable side plate or the fixed side plate and are connected with the driving pulley.

8. The conveying line with the adjustable conveying distance according to any one of claims 1 to 3, wherein a bearing strip is arranged on the tops of two opposite surfaces between the movable side plate and the fixed side plate, the bearing strip is positioned on the inner side of the conveying belt, and the upper surface of the bearing strip is abutted to the inner side surface of the conveying belt.

9. The conveying line with the adjustable conveying distance according to claim 8, wherein a limiting strip is arranged on the tops of two opposite surfaces between the movable side plate and the fixed side plate, the limiting strip is located above the bearing strip, a limiting groove allowing the conveying belt to pass through is formed between the limiting strip and the bearing strip, and the width of the limiting strip is smaller than that of the conveying belt.

10. A loading and unloading machine, characterized in that, the loading and unloading machine comprises the conveying line and the carrier of any one of claims 1 to 9, and two sides of the carrier are respectively borne on the conveying belts on the fixed side plate and the movable side plate.

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