64results about How to "Play a limiting effect" patented technology

The utility model discloses a toner cartridge convenient for filling carbon powder, which relates to the technical field of toner cartridges and comprises a toner cartridge powder bin, a sealing groove is arranged on the top of the toner cartridge powder bin close to the front side, and sealing cover plates are rotatably arranged on the inner side of the sealing groove close to the left side and the right side. A toner adding opening is formed in the inner side of the toner cartridge powder bin and located at the bottoms of the two sealing cover plates, clamping frames are fixedly installed at the positions, close to the center, of the bottoms of the sealing cover plates, positioning assemblies are arranged on the inner sides of the sealing cover plates, and anti-blocking assemblies are arranged at the positions, close to the center, of the front side of the toner cartridge powder bin. The clamping frames on the two sides can be attached to the two sides of the carbon powder adding bottle, the inclination phenomenon of the carbon powder adding bottle is avoided, carbon powder is added in an auxiliary mode through the anti-blocking assembly, blocking caused by small flow in the carbon powder adding process is effectively avoided, and therefore the use efficiency and use convenience of the selenium drum easy to add powder are effectively improved.

The utility model relates to the field of metal processing and manufacturing, and discloses a self-centering metal part clamping device which comprises a platform and a bottom plate, the lower surface of the platform is fixedly connected with a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected with a sliding plate, and the outer wall of the sliding plate is slidably connected to the inner wall of the platform. A plurality of groups of clamping rods are fixedly connected to the upper surface of the sliding plate, the clamping rods are transversely arranged and distributed, the lower surface of the sliding strip is fixedly connected to the upper surface of the platform, an auxiliary centering assembly is arranged on the outer wall of the sliding plate, and an inclination adjusting assembly is arranged on the upper surface of the bottom plate. According to the centering device, the sliding plate is driven by the hydraulic cylinder to slide under the limitation of the platform, the sliding block and the sliding strip, the effect of driving the linkage rod and the synchronous plate to drive the clamping rods on the two sides to be centered is achieved, the first-stage centering and fixing effect is achieved in the using process, and meanwhile the second-stage centering and fixing effect is achieved through the auxiliary centering assembly.

This utility model discloses a library lending cart, including a frame and a cart bed fixedly connected inside the frame. A transmission rod is movably connected to the inside of the cart bed via bearings. A support plate is fixedly connected to the surface of the transmission rod, and a connector is fixedly connected to the top of the support plate. Books are inserted into the inner side of the connector. The support plate can tilt and swing the connector around the transmission rod as an axis. A transmission structure is provided on the left side of the frame, which can control the rotation of a shaft. The transmission structure includes a pedal movably connected to the left side of the frame via a pin. This utility model avoids page compression and bending caused by traditional stacking by using a vertical connector to insert books, reducing the damage rate. The tilting and swinging design arranges books in a stepped pattern, with exposed spine labels, facilitating quick identification of type and quantity by administrators. Furthermore, the linkage mechanism between the transmission rod and the support plate allows for flexible switching between book storage and display states.

The utility model relates to the technical field of motor iron cores, and discloses a stable high-speed permanent magnet synchronous motor iron core, which comprises an end cover, a silicon steel shell and a connecting disc, end covers are mounted on the outer sides of the silicon steel shells through mounting bolts, positioning guide sleeves are welded to the axes of the end covers in a sleeving mode, positioning bearings are arranged in the positioning guide sleeves in a sleeving mode, circular ring limiting grooves are formed in the inner sides of the silicon steel shells, and vertical frameworks are arranged between the two silicon steel shells at equal intervals; supporting circular rings are welded to the two ends of the vertical framework and located in the circular ring limiting grooves, connecting discs are arranged on the periphery of the silicon steel shell and close to the circular ring limiting grooves, opposite-pulling screw holes are formed in the connecting discs at equal intervals, and pull rods penetrate through the corresponding opposite-pulling screw holes in the two sets of connecting discs; the high-speed permanent magnet synchronous motor iron core is convenient to quickly assemble, manpower and material resources are saved, the overall stability is high, winding processing is quick, and the stable effect of rotor rotation is improved.

This utility model discloses a die-cutting positioning structure for smart labels, including a base box, a die-cutting assembly fixedly connected to the rear top of the base box, and a label assembly disposed on top of the die-cutting assembly. Automatic positioning mechanisms are fixedly connected to the rear sides of both sides of the base box. Each automatic positioning mechanism includes two support plates, a cylinder fixedly connected to the top of each support plate, a protruding rod fixedly connected to the output end of the cylinder, a wheel plate fixedly connected to the front top of the protruding rod, a trapezoidal block slidably connected to the top of the wheel plate, and an L-shaped plate fixedly connected to the front of the trapezoidal block. The inner side of the L-shaped plate is slidably connected to the base box. This utility model die-cutting machine changes the traditional manual pressing and locking structure for positioning. It uses a vertical plate to drive a pressure plate downwards, pressing the label assembly down. This eliminates the need for manual operation of the pressing structure, increasing user convenience and hand safety while ensuring positioning efficiency.

The utility model provides a kind of corner removing machine convenient to position photo frame, it is related to corner removing machine technical field, to solve the problem that current corner removing machine cannot be positioned to photo frame auxiliary when cutting, cutting mechanism includes: main body, main body is connected with workbench by motor;Collecting groove is provided on workbench;Moving part is set in the top of workbench by spring;Handle is provided on moving part;Fixed part is set in the top of moving part;The round hole inside of fixed part is slidably installed with mounting rod;Mounting rod is connected with positioning part;Positioning part is connected with fixed part by spring. By pulling positioning part, so that positioning part drives mounting rod to move and compress spring, by placing photo frame between positioning part and top piece, positioning part is driven to clamp photo frame by the action of spring reset, so as to ensure the stability of position when cutting photo frame.

This application relates to a valve structure, including a valve body, with a valve cap and a connecting seat connected to both ends of the valve body. The valve cap is a hollow sleeve and can slide on the valve body. A cap is movably provided at one end of the valve cap, which can close the valve body. A snap-fit ​​part is provided on the valve body, which can connect with the end of the valve cap away from the cap. This application, by providing a movably connected valve cap on the valve body, and by making the valve cap hollow sleeve, allows the valve cap to move, facilitating normal inflation of the valve body. By providing a movably provided cap on the valve cap, the valve body can be closed, preventing dust and water from entering and facilitating use. Simultaneously, the snap-fit ​​part on the valve body, which can connect with the valve cap, can restrict the position of the valve cap, achieving an anti-theft and anti-loss effect.

The application discloses a multi-degree-of-freedom adjusting probe array for battery module equalization detection, and relates to the technical field of battery detection.The multi-degree-of-freedom adjusting probe array comprises a base, a plurality of mounting columns are symmetrically and fixedly installed on the base, an electric telescopic rod is fixedly installed in each mounting column, a supporting frame is fixedly and jointly installed at the telescopic ends of the plurality of electric telescopic rods, a plurality of supporting frames are equidistantly clamped in the supporting frame, and a plurality of fixing cylinders are slidably installed in each supporting frame.The application solves the problem that the existing battery module accumulates position errors in the assembly link, causes small height differences in the height direction of each pole in the same module, and causes the surfaces of some battery poles to present a small inclination after welding, which leads to unstable contact between the probe and the pole, and the pole spacing, pole height and arrangement mode of battery modules of different capacities and specifications are greatly different, the common probe array cannot be flexibly adjusted, and the production line efficiency is seriously affected.

The moxibustion treatment chair comprises a bottom frame, a lying cushion fixedly connected to the top of the bottom frame, a moxibustion box fixedly connected to the bottom of the lying cushion and a through hole formed in the top of the lying cushion, the bottom of the bottom frame is fixedly connected with an angle adjusting mechanism, and the angle adjusting mechanism comprises a bottom plate. The rear side of the right side of the top of the bottom plate is fixedly connected with a small motor, the output end of the small motor is fixedly connected with a rotating rod, the left side of the surface of the rotating rod is sleeved with a first belt wheel, the surface of the first belt wheel is in transmission connection with a connecting belt, and the top of the bottom plate is transversely and movably connected with a rotating rod through a bearing; the left side of the surface of the rotating rod is sleeved with a second belt wheel. According to the moxibustion treatment chair, the phenomenon that the traditional angle cannot be adjusted so that old people cannot conveniently get on the chair is changed, the bottom frame is driven by the pulling rope to incline, the old people cannot conveniently use the treatment chair, and the convenience of the treatment chair cannot be influenced.

A maintenance structure for a PTA silo rotary valve, belonging to the field of material handling equipment technology, includes a maintenance box. Connection ports are provided on both the left and right sides of the maintenance box. A discharge connection pipe and a feed connection pipe are integrally formed with the maintenance box at each connection port. A scraper for transporting materials is installed between the feed and discharge connection pipes, and adjacent scrapers are connected by a chain. This invention, by installing a maintenance box between pipes, achieves material transport through the feed and discharge connection pipes on both sides. Simultaneously, the maintenance box allows for the shutdown and replacement / maintenance of scrapers requiring replacement. A lifting base is slidably inserted into the bottom of the maintenance box, and the lifting base, in conjunction with the auxiliary discharge port at the top, is positioned at the bottom corresponding to the connection ports on both sides. This prevents material accumulation inside the maintenance box during scraper transport.

The utility model discloses a building column formwork supporting device, and relates to the technical field of building column formworks, the building column formwork supporting device comprises a formwork body, connecting columns are arranged outside the periphery of the formwork body, the number of the connecting columns is multiple, moving grooves are formed in the surfaces of the sides, close to the bottom face, of the connecting columns, and the connecting columns are arranged in the moving grooves. Moving grooves are formed in the surfaces of the two sides of the connecting column located between the two connecting columns, the two connecting columns are connected through a reinforcing assembly, the reinforcing assembly moves along the moving grooves, mounting notches are formed in the surfaces of one sides of the two ends of each moving groove, and each reinforcing assembly comprises a first reinforcing arm and a second reinforcing arm; according to the scheme, the problems that when existing concrete is poured, large impact force is exerted on the bottom of the formwork, the bottom formwork is prone to cracking, reinforcing is conducted in the mode that the reinforcing ribs are fixed through bolts, multiple reinforcing ribs are needed, mounting and dismounting are inconvenient, and flexibility is poor are solved.

This utility model relates to a dust collection structure for a dust collector used in laser cutting. It includes a dust collector body with a drain outlet at the bottom and a detachable sludge collection hopper installed below the drain outlet. Two retaining strips are fixed to both sides of the bottom of the drain outlet, extending along the width of the dust collector body. A rectangular mounting frame is fixed to the top of the sludge collection hopper. The mounting frame has mounting grooves on both sides that match the retaining strips. The drain outlet can be correspondingly fitted into the mounting grooves. The retaining strips have a T-shaped cross-section, and the mounting grooves are T-shaped grooves that match the retaining strips. This utility model utilizes the sliding engagement of the two retaining strips into their corresponding mounting grooves to assemble the drain outlet and the sludge collection hopper. The T-shaped cross-sections of the retaining strips and mounting grooves provide a vertical limiting effect, effectively preventing the sludge collection hopper from falling downwards. The installation of the sludge collection hopper is achieved through the sliding engagement of the retaining strips and mounting grooves, making the assembly and disassembly of the sludge collection hopper convenient and quick.

The utility model discloses a loudspeaker grille for a vehicle, and belongs to the technical field of automobile accessory grilles. A round groove penetrating front and back is formed in the center of a main body plate, a first fixing ring is fixedly connected to the interior of the round groove, a second fixing ring is connected to the back face of the first fixing ring, a grating cover is arranged on the inner side of the first fixing ring, clamping pieces are connected to the periphery of the outer surface of the grating cover, and the front faces of the clamping pieces are attached to the back face of the first fixing ring. The movable strip is pushed upwards, the pressing ring is pressed backwards, the front end of the extrusion rod is far away from the clamping piece, at the moment, the clamping piece is unfixed, the grille cover is rotated clockwise, the clamping piece is aligned with the open groove, and then the grille cover can be taken out to be cleaned, so that the grille cover is convenient to disassemble and clean, and the cleaning efficiency is improved. The situation that dust is easily gathered in the grating after long-time use and grating holes are blocked is avoided, and the sound output effect of the loudspeaker is improved.

This utility model discloses a concrete raw material transfer device, including a frame assembly, a platform assembly disposed at the bottom of the frame assembly, and a push rod assembly fixedly connected to the top right side of the frame assembly. A lifting mechanism is fixedly connected to the inner side of the push rod assembly. The lifting mechanism includes a horizontal plate, a base fixedly connected to the right side of the horizontal plate, a motor fixedly connected to the right side of the base, and a screw fixedly connected to the output end of the motor. A support plate is movably connected to the bottom of the screw via a bearing. The left side of the support plate is fixedly connected to the frame assembly. A screw block is threadedly connected to the bottom of the screw surface, and a connecting block is fixedly connected to the left side of the screw block. This utility model transfer device overcomes the traditional limitation of not being able to adjust the placement height. By using a lifting plate to move the platform assembly upwards, the position of the platform assembly can be adjusted, increasing the convenience of subsequent handling and ensuring overall operational ease.

The utility model relates to automatic equipment technical field especially is a kind of screw machine lock attachment device with vibration feeding, including fixed shell, the inside fixed connection of fixed shell is symmetrically set and has guide block, the bottom fixed connection of fixed shell has support shell, the inside fixed connection of support shell has hydraulic pressure rod, the outside of hydraulic pressure rod is equipped with spring, the one end fixed connection of hydraulic pressure rod away from support shell has first guide shell, the inside fixed connection of first guide shell is evenly set and has spacing limiting plate, guide slot is equipped between limiting plate and first guide shell, in the utility model, the effect of automatic feeding can be realized by the guide block, first guide shell, guide slot, guide strip and second guide shell set, the effect of first guide shell vibration is realized by hydraulic pressure rod, make guide block and guide slot screw discharging more smooth, without manual manual in screw, substantially improve feeding efficiency.

The invention provides a battery pack and a vehicle, the battery pack comprises a battery cell module, a box body and a buffer limiting plate, the battery cell module comprises a plurality of battery cells stacked along a first direction; an accommodating cavity for accommodating the battery cell modules is formed in the box body, and a plurality of groups of battery cell modules are arranged in the accommodating cavity along a second direction; the buffer limiting plate comprises a buffer layer and a limiting layer which are stacked in the first direction, and the buffer limiting plate is arranged in the second direction; wherein the hardness of the limiting layer is greater than that of the buffer layer, the buffer limiting plate is located in a gap between two adjacent battery cells of the at least two battery cell modules, and the buffer limiting plate is connected with the battery cells arranged on the two sides of the buffer limiting plate. Through the arrangement, cross beams and longitudinal beams in the battery pack can be omitted, so that the energy density of the battery pack is improved; and the limiting effect on the battery cells is improved by arranging the buffer limiting plate, so that the structural strength of the battery pack can be ensured on the premise of improving the energy density of the battery pack.

The application relates to an air compressor room noise reduction equipment, which comprises a room box, an upper stop and a pipeline; the upper stop is hingedly arranged above the room box; the pipeline is connected to the edge of the room box; a pair of bearing tables are arranged in the room box, the pair of bearing tables are mirror-symmetrically arranged about the center line of the room box, and a plurality of degradation units are arranged on the inner edge of the room box; the degradation unit comprises a movable ring, a positioning frame, a flexible arm and a center rod; the movable ring is hingedly connected to the inner edge of the room box; the positioning frame is fixedly connected to the inner edge of the room box; and the positioning frame is arranged at the outer position of the movable ring. The air compressor room noise reduction equipment can bear the air compressor by the pair of bearing tables, the air compressor will shake during operation, the degradation unit can relieve the motion force of the bearing table, the collision between the bearing table and the room box can be reduced, and the noise reduction effect can be achieved.

This utility model relates to the field of cell culture dish technology and discloses a cell culture dish that is easy to separate. It includes a main body of the culture dish, an openable lid on the upper part of the main body, and several placement slots on the upper part of the main body for placing cell culture tubes. Several elastic clamping plates are provided within the placement slots, and clearance grooves adapted to the clamping plates are formed on the inner sidewalls of the placement slots. Several movable insertion posts, one end of which is inserted into the inner sidewall of the clearance groove, are fixedly installed on one side of each clamping plate. Elastic elements are sleeved on the sides of the insertion posts. In this utility model, by cooperating with the clamping plates, elastic elements, and insertion posts, a cell culture tube is forcefully inserted downwards, and the clamping plates clamp and fix the cell culture tube, facilitating the placement and removal of the placement slot.

The utility model discloses a kind of measuring devices for house building construction, including support frame, measuring rod and moving wheel, the both sides of support frame inner wall are uniformly fixed with adjusting mechanism, the adjusting mechanism includes fixed plate, the top of fixed plate is equipped with arc slot, the inner wall of arc slot is slidably connected with movable cylinder, movable cylinder is located at the outside of measuring rod, the both sides of movable cylinder are fixedly connected with limit ring, the inner side of limit ring is slidably connected with the surface of fixed plate.The utility model is adjusted by setting adjusting mechanism, using arc slot can make fixed plate to movable cylinder and measuring rod carry out activity limit, to facilitate adjusting rod to move inside arc slot, and then can use measuring rod to carry out multi-position measurement without moving support frame, while measuring, measuring rod moves up and down on the inside of movable cylinder, it is convenient for user to observe the scale value on the surface of measuring rod with movable cylinder as reference.

The utility model discloses a paint spraying gun with safe splash-proof function, including gun body subassembly, set up the spray head subassembly of the front top of gun body subassembly, the paint storage box of screw thread connection in the bottom front side of gun body subassembly, the surface fixed connection with spray head subassembly is fixedly connected with all -round splash -proof mechanism in the front of gun body subassembly, all -round splash -proof mechanism includes rectangular block, the front of rectangular block is provided with the sheltering round cover, the top and bottom of sheltering round cover all are fixedly connected with vertical block, the top and bottom of rectangular block all are through bearing transverse swing joint with positive and negative toothed rod, the inner side screw thread connection of positive and negative toothed rod surface has the screw bushing. The utility model discloses paint spraying gun has changed the phenomenon that only the upper and lower ends can be splash -proofed in traditional, has adopted the sheltering round cover and carries out all -round splash -proof treatment, will not lead to the splash of the paint rebound of construction personnel, also will not influence the construction environment comfort of construction personnel.

The application provides a round-end T-shaped pier assembled anti-overturning cover beam support, and relates to the field of bridge construction structures, which comprises a support main body, a thickened shoulder provided in the middle of the support main body, vertical supports fixedly connected to the surfaces on both sides of the support main body, horizontal supports fixedly connected to the support main body and having the vertical supports welded to the lower surfaces of the horizontal supports, diagonal supports respectively welded to the outer ends of the horizontal supports and the vertical supports, and a cover beam bottom plate fixedly connected above the horizontal supports. The application enhances the stability of the anti-overturning auxiliary frame body of the side edge, solves the problems of the existing cover beam support, such as difficult erection, welding of the frame body during erection, long-time support of the frame body by the lifting mechanism of the frame body during welding, inconvenient assembly and low anti-overturning capacity during the assembly process of the cover beam support.

The utility model discloses a kind of aluminium alloy section bar processing equipment, comprising: cutting processing machine cabinet, angle adjusting slide is limit slidably arranged in cutting processing machine cabinet upper one end, clamping rotary frame is rotatably connected in angle adjusting slide upper one end, limit clamping plate is screw-connected and arranged in clamping rotary frame inside one end, and adjusting locking bolt is limit and is penetrated in angle adjusting slide and clamping rotary frame inside;In the utility model, by holding rotary handle, locking internal thread sleeve can be loosened, so that clamping rotary frame can be rotated to quickly adjust the angle of cutting, after adjustment is completed, locking internal thread sleeve is again reversely rotated and tightened, so that it is firmly attached to rotary frame base and is pressed down, so that the adjustment and locking of clamping rotary frame angle can be quickly and conveniently completed.

The utility model discloses an energy -saving type excrement dry -wet mixed auger, including conveying assembly, the feed assembly of intercommunication in conveying assembly left side, the outlet assembly of intercommunication in conveying assembly bottom right side, the right side fixed connection of conveying assembly top has the oscillation mechanism, the oscillation mechanism includes three -phase asynchronous motor, the output fixed connection of three -phase asynchronous motor has double -end cam, the front and back of double -end cam all is provided with the push board, the left side fixed connection of push board bottom has the limit rod, the bottom of limit rod and conveying assembly sliding connection, the right side fixed connection of push board has the elbow board, both sides of elbow board inboard all fixed connection has the spring. The utility model discloses auger changed the phenomenon that the traditional need greater power will the piled excrement to the outlet assembly, adopted L type ram to carry out the oscillation treatment to the outlet assembly, just will not too much consume energy, also will not increase the cost of energy, even more will not influence the concept of energy -conserving and environment -protecting.

The utility model discloses a shoemaking casting punching device which comprises a workbench, a top frame and a punching table are arranged at the top end of the workbench, a transverse frame is connected to the bottom of the top frame in a lifting mode, an installation base is fixedly connected to the bottom of the transverse frame, a punching head set is installed at the bottom of the installation base, and the punching table is located at the bottom of the punching head set. The top side of the workbench is fixedly connected with supporting frames, the supporting frames are of an L-shaped structure in the side view, the multiple supporting frames are arranged relative to the top side of the limiting frame, the limiting frame is of a C-shaped structure in the overlook view, a notch is formed in the top side of the limiting frame, the supporting frames are in threaded connection with adjusting screws, one ends of the adjusting screws are connected with the limiting frame, and a sensor is installed on the inner side of the limiting frame. The outer wall of the mounting base is fixedly connected with a connecting block which is located at the top of the limiting frame and makes contact with the top of the sensor. According to the device, the punching depth of the punching head group can be conveniently adjusted, so that adjustment can be performed according to vamps made of different materials, and the punching precision and the practicability of the device are improved.

The utility model discloses a gas spring applied to air gun relates to air gun gas spring installation technical field, including cylinder, limit stop, round angle limit stop, the gas spring plays the spacing effect when being extruded by the gravity of downward piston rod, elastic ball, the gravity of being received downward makes elastic ball and press the weight of two inclined blocks, thereby utilize two inclined blocks to add pressure to both ends, compress the first limit spring of telescopic rod outer wall, play the buffering protection effect, the round angle limit board of setting plays the spacing effect to the connection of telescopic rod and limit ring, and the movement of two limit sleeves set to telescopic rod plays the spacing protection effect, and the two second limit springs of setting are fixed in fixed block and round angle connecting plate both ends, realize the telescoping of following first limit spring telescoping, thereby when the gas spring receives the impact and press the gravity to it, along with elastic ball and press the gravity of two inclined blocks utilize first limit spring and two second limit springs and play good buffering spacing effect.

The utility model belongs to the technical field of step drill bit, especially involve a step drill bit with laser alignment mark, in view of the inconvenient disassembly problem of prior art, present and propose the following scheme, including the drill rod, the bottom end of drill rod has the drill bit to wear, and the inside of drill rod is provided with the limit slot, the outer wall of drill rod is provided with the sliding slot, and the inside of sliding slot is provided with the adjusting mechanism, the utility model first drill rod's limit slot and sliding slot, can let the connecting plate and mounting block wear and slide, cooperate with the clamping groove and the clamping block to let the sleeve pass through and drill rod threaded connection to adjust the position, can drive laser lamp to slide in the drill rod and align the center point of drill bit, can with the center point of drill bit let the laser shoot to work piece, to improve the accuracy of processing process, cooperate with the sleeve and drill rod threaded connection, can carry out the quick disassembly and maintenance to laser lamp, improve the flexibility and applicability of overall use.

The utility model discloses an automatic tire sorting system, which relates to the technical field of tire sorting and comprises a chain plate type main conveyor and a chain plate type branch conveyor which are arranged in a staggered manner, a combined guide frame and a triangular barrier plate which are in a rectangular array form are arranged above the joint of the chain plate type main conveyor and the chain plate type branch conveyor; the end of the combined guide frame is fixedly connected with an end fixing frame, and the bottom of the end fixing frame is fixedly connected with the side, away from the chain plate type branch conveying machine, of the chain plate type main conveying machine. According to the combined type guide frame, the dovetail-shaped limiting grooves and the dovetail-shaped clamping blocks on the two sides of the guide roller supports are matched with each other, the multiple guide roller supports are connected together in a rectangular array mode, and therefore the needed length is formed; any combined guide frame can be exchanged and rapidly replaced at any time, maintenance is facilitated, and meanwhile the use cost is reduced.

This utility model relates to the field of carton sealing machine technology, and in particular to a transport device for a carton sealing machine, including a carton sealing machine body, with a transport component provided at the right end of the carton sealing machine body. In this utility model, a transport device for a carton sealing machine is designed, utilizing a conveyor belt to transport boxes. An electric telescopic rod extends and retracts, guiding the boxes during movement via a guide plate. A bidirectional threaded rod rotates, driving two sets of moving blocks to move in opposite directions, thereby driving two sets of positioning plates to move in opposite directions to clamp and position the boxes, facilitating operation of the carton sealing machine body. A hand crank rotates, causing the inner rotating rod of the retractable belt to rotate, releasing the retractable belt. A locking block engages inside the box, facilitating the interception of the box by the retractable belt. A hydraulic cylinder drives a limiting block to engage on the outer wall of the retractable belt, providing a limiting effect.

The utility model discloses a preheating device for electroplating, which relates to the technical field of electroplating, and comprises an electroplating box, a protective component is arranged in the electroplating box, a heating space is formed between the periphery of the protective component and the inner wall of the electroplating box, and a quartz heating tube is arranged in the heating space. A plurality of quartz heating pipes are arranged on the upper end of the protective assembly, the quartz heating pipes surround the protective assembly, a protective cover plate is arranged at the upper end of the protective assembly, the protective assembly comprises an electroplating protective frame, and a permeable opening is formed in the outer surface of the electroplating protective frame. According to the scheme, the problems that in existing electroplating, when electroplating liquid is preheated, heating is mostly conducted through a heating pipe installed at the bottom of a heating box, heat is dissipated from bottom to top, heat dissipation in a continuous diffusion mode is conducted, top heat loss is fast, and the phenomenon that top heat and bottom heat are not uniform is likely to happen are solved; and therefore, the electroplating effect is influenced.