38results about How to "Increase or decrease in number" patented technology

The invention relates to a football pitching machine which comprises a chassis mechanism, a football shooting mechanism, a football supply mechanism and a football storage mechanism, wherein the football shooting mechanism and the football supply mechanism are connected to the chassis mechanism; the football shooting mechanism, the football supply mechanism and the football storage mechanism are communicated sequentially; the football shooting mechanism comprises a fixed plate, a first football shooting assembly, a second football shooting assembly and a transversely moving assembly; the fixed plate is pivoted with the chassis mechanism; the first football shooting assembly is connected with one end of the fixed plate; the second football shooting assembly is connected with the other end of the fixed plate; the transversely moving assembly is connected with the first football shooting assembly and the second football shooting assembly respectively; the transversely moving assembly is used for driving the first football shooting assembly and the second football shooting assembly to move in the length direction of the fixed plate so as to adjust the relative distance between the first football shooting assembly and the second football shooting assembly. The football storage mechanism is provided with the transversely moving assembly which is used for driving the first football shooting assembly and the second football shooting assembly to move so as to adjust the relative distance between the first football shooting assembly and the second football shooting assembly, can adjust the distance between the first football shooting assembly and the second football shooting assembly to adapt to the size of the specific football and improves the universality.

The invention discloses an optical network unit (ONU) certification authorization management method based on License resource control and relates to the field of ONU management methods. According to the method, ONUs apply License resources, if the License resources are applied, a master control disk issues the authorization information and service configuration of the ONUs to a service interface disk, and if the License resources are not applied, the master control disk does not issue the authorization information and the service configuration; when the ONUs are replaced, the ONUs are respectively set as class I and class II, wherein the class-I ONUs and an optical line terminal (OLT) belong to the same manufacturer, and the class-II ONUs and the OLT belong to different manufacturers; if the class-I ONUs are replaced or the class-II ONUs are replaced, the replaced ONU and the new ONU do not apply and release the License resources; and if the class-I ONUs and the class-II ONUs are replaced, the replaced ONU releases the License resources before being replaced, and the new ONU applies the License resources. By adoption of the method, the License resources are reasonably utilized, leakage is avoided, and operational cost is reduced.

The invention discloses a detection device of an optical ghost image near an optical axis, and the detection device is used in an optical system. The detection device comprises a laser, wherein a collimating lens, a half-passing and half-reflecting lens and a total reflective lens are arranged in turn in the laser beam output direction of the laser; an aperture with a small hole and a CCD charge coupled device)-array detector provided with an adjustable attenuator are arranged in turn in the reflected light directions of the half-passing and half-reflecting lens and the total reflective lens; the CCD-array detector is placed on a linear guide rail with location scales; the CCD-array detector is driven by a driver to move on the guide rail; the input end of the driver is connected with the output end of a computer; and the output end of the CCD-array detector is connected with the input end of the computer. The detection device provided by the invention can verify the ghost image in the optical system, thus increasing the safety of the high-power laser system. The device is suitable for the detection of the optical ghost image on the axis of the large-diameter lens; the device has the advantages of being simple in structure, convenient to move and easy to realize and overcoming the defect that the broad beam ghost image is difficult to detect.

The invention discloses a removable plate-shaped battery series battery pack structure. The removable plate-shaped battery series battery pack structure comprises a heat and pressure keeping shell, a single battery integration unit, a fuel gas distributing unit, an oxidation gas distributing unit, a conductive unit and a battery fastener; the single battery integration unit is formed by serially integrating at least two single batteries, a metal screen and the fastener; the single batteries (1-2-1) are sequentially superposed, and the single batteries physically contact with each other through the metal screen; the single battery integration unit is arranged in the heat and pressure keeping shell; the positive electrode and the negative electrode of the single battery integration unit are lead out of the heat and pressure keeping shell through the conductive unit; and the fuel gas distributing unit and the oxidation gas distributing unit are used for supplying a fuel gas and an oxidation gas to the single battery integration unit. The removable plate-shaped battery series battery pack structure considers the removability of single batteries and the sealing performance of the batteries, and effectively solves the problems of uneven battery pressure, large battery constraining pressure and difficulty in maintenance of a battery pack in the prior art. The above design idea of the cell pack structure is also suitable for a solid oxide electrolytic tank pack structure.

The invention discloses a method, a device and a system for storing and searching Session information. The storing method comprises the following steps of receiving a request which is sent by a user terminal and is used for writing one Session information, recording the time information for receiving the request, determining the number of first storage devices which are already added in the system before the recorded time information according to the time information when each first storage device is added in the system, generating a numerical value which is used for calculating a modulus and extracting a remainder, extracting the remainder by dividing the generated numerical value by the determined number, taking the obtained remainder as a label of one first storage device, determining a corresponding first storage device, writing the Session information sent by the user terminal in the first storage device, and feeding back the recorded time information corresponding to the Session information and the numerical value which is used for calculating the modulus and extracting the remainder to the user terminal. The accuracy of visiting the Session information by a user is increased.

The invention relates to a method for associating time slots (S0, S1,..., S20) with links (L1, L2,..., L6) between network nodes (1, 2,..., 16) of a wireless interconnected network of a plurality of network nodes. Data are thereby transmitted in the network on a time slot basis by means of the association of the time slots (S0, S1,..., S20) to be used with the links (L1, L2,..., L6) on a plurality of channels (C0, C1, C2).; According to the invention, a plurality of traffic requests are prescribed, wherein each traffic request specifies a data transfer between the source node (5, 15) and a destination node (8, 3), sets one or more time slot sequences, wherein a time slot sequence describes a time-based sequence of association of time slots (S0, S1,..., S20) with links (L1, L2,..., L6) between adjacent network nodes (1, 2,..., 16) of a transmission path between the source node (5, 15) and the destination node (8, 3). According to the invention, an association scheme for data transmission via a plurality of channels (C0, C1, C2) is determined, considering all prescribed traffic requests, based on an optimization criterion, designed such that the number of the time slots (S0, S1,..., S20) used in the association scheme is as low as possible.; Interlacing of the time slots (S0, S1,..., S20) is further permitted within the association scheme, such that a time slot (S0, S1,..., S20) associated exclusively with one or more links (L1, L2,..., L6) of one or more other second time slot sequences can be disposed between two time slots (S0, S1,..., S20) each associated with a link (L1, L2,..., L6) of a first time slot sequence.

The invention discloses a plastic profile multi-position welding machine, which comprises a first welding machine head, a second welding machine head and one or two intermediate welding machine heads, wherein the intermediate welding machine heads are positioned between the first welding machine head and the second welding machine head; the first welding machine head and the second welding machine head are both provided with front pincers, rear pincers, an L-shaped heating plate and an L-shaped positioning plate; working feed directions of the first welding machine head and the second welding machine head are parallel and opposite to an X axial direction; the first welding machine head forms 90 degrees anticlockwise rotation with a direction of a pincer port welded routinely and linearly; the second welding machine head forms clockwise rotation of 90 degrees with the direction of the pincer port welded routinely and linearly; and each intermediate welding machine head includes four pincer groups, wherein two groups of opposite angles are opposite relatively to the working feed direction and both parallel to the X axial direction, and another two groups of opposite angles are opposite relatively to the working feed direction and both parallel to a Y axial direction. The invention further discloses a method for welding doors and windows which are shaped in an inverted Chinese character wang and for welding doors and windows with two cross-shaped mullions arranged in the middle. By adopting the plastic profile multi-position welding machine and the welding method, pluralities of the plastic doors and windows with the cross-shaped mullions or in the shaped of the Chinese character wang can be welded and formed at one time.

The invention relates to a football pitching machine which comprises a chassis mechanism, a football shooting mechanism, a football supply mechanism and a football storage mechanism, wherein the football shooting mechanism and the football supply mechanism are connected to the chassis mechanism; the football shooting mechanism, the football supply mechanism and the football storage mechanism are communicated sequentially; the football shooting mechanism comprises a fixed plate, a first football shooting assembly, a second football shooting assembly and a transversely moving assembly; the fixed plate is pivoted with the chassis mechanism; the first football shooting assembly is connected with one end of the fixed plate; the second football shooting assembly is connected with the other end of the fixed plate; the transversely moving assembly is connected with the first football shooting assembly and the second football shooting assembly respectively; the transversely moving assembly is used for driving the first football shooting assembly and the second football shooting assembly to move in the length direction of the fixed plate so as to adjust the relative distance between the first football shooting assembly and the second football shooting assembly. The football storage mechanism is provided with the transversely moving assembly which is used for driving the first football shooting assembly and the second football shooting assembly to move so as to adjust the relative distance between the first football shooting assembly and the second football shooting assembly, can adjust the distance between the first football shooting assembly and the second football shooting assembly to adapt to the size of the specific football and improves the universality.

In an alternating current distribution board, circuit breakers (5) and a controller (6) are housed as internal devices, wherein: each of the respective circuit breakers (5) is provided for a corresponding one of branch lines into which master wiring for a direct current power supply branches; and the controller (6) controls opening and closing of the respective circuit breakers (5). Each of the circuit breakers (5) comprises: power supply side connection terminals (t1 and t2) connected to the master wiring; load side connection terminals (t3 and t4) to which wiring on the load side is connected; a semiconductor switching element (57) provided in the middle of an electrical path connecting the power supply side connection terminals (t1 and t2) to the load side connection terminals (t3 and t4); a current detecting resistance (56), which detects a current flowing in the electrical path; and an arithmetic circuit (60), which opens and closes the semiconductor switching element (57) in accordance with opening and closing control signals inputted from the controller (6), and which forcibly closes the semiconductor switching element (57) when a current value obtained based on a voltage across the current detecting resistance (56) exceeds a set current.

The invention discloses an automatic punching device for a cylinder body water sleeve. The automatic punching device comprises a steel structure bracket, an air storage tank, a first air cylinder, a second air cylinder, a third air cylinder, universal wheels, an operating electric cabinet and a PLC program controller; the steel structure bracket comprises an upper platform and a lower platform, the air storage tank is arranged on the lower platform, a groove is formed in the middle of the upper platform, a positioning jig is arranged in the groove, and a first side face air drill and a secondside face air drill are arranged on the two sides of the positioning jig correspondingly; the first air cylinder and the second air cylinder are arranged at the edges of the two sides of the upper platform correspondingly, a bottom air drill is arranged at the bottom of the upper platform, the third air cylinder is also arranged at the bottom of the upper platform, and the third air cylinder drives the bottom air drill to vertically penetrate through the upper platform and the positioning jig; the air storage tank communicates with the first air cylinder, the second air cylinder and the thirdair cylinder through an air pipe; the air pipe is provided with an oil cup, a pressure gauge, a pressure adjusting valve and an air filter; and the PLC program controller is arranged on the upper sideof the operating electric cabinet, and the universal wheels are mounted at the bottom of the steel structure bracket.

The invention discloses a method for avoiding data packet loss of a 5G data forwarding plane and a server. The method comprises the following steps: setting a receiving queue of a predetermined numberof data packets according to the maximum number of CPU cores of a concurrent running forwarding program of the server, each CPU core is ensured to correspond to a certain number of receiving queues;when the number of the CPU cores concurrently running the forwarding program is increased or decreased; the number of receiving queues of the network card does not need to be adjusted; when the numberof the CPU cores is changed, only the corresponding relation between the preset number of data packet receiving queues and the multiple CPU cores with the changed number needs to be adjusted, the problem that data packets are lost when the number of the CPU cores running the forwarding program in a concurrent mode is increased or decreased is avoided, and the workloads of all the CPU cores running the forwarding program are made to be balanced.

The present invention relates to an autostereoscopic screen for the simultaneous reproduction of more than two different pictures, comprising a pixel matrix (12) with a multitude of pixels, an optical element (15) arranged on front of or behind the pixel matrix (12) and a control unit (16) for activating the pixel matrix (12) and the optical element (15). The optical element (15) forms an optical grid with a family of strip-like structures which run next to one another, wherein a period length of the optical grid is changeable by way of activating the optical element (15). Thereby, for a change of a viewing distance (Ln, L) the control unit (16) is configured to increase or reduce the period length and to simultaneously change a distribution of picture information onto the pixel matrix (12). The invention further relates to a corresponding method for the simultaneous reproduction of more than two different pictures.

The invention discloses an edge-changeable girdling device, belongs to the field of gardening tools, particularly relates to a girdling saw whose edge teeth can be replaced and increased, and aims to achieve girdling edge replacement and overcome the defect that an existing girdling cutter cannot girdle partial one-piece bark. The edge-changeable girdling device has the advantages that different types of edge teeth of different shapes are fixed on the base of a girdling edge base, and the edge teeth can be replaced; the girdling device can girdle annular bark of 3-8mm and can also girdle the partial one-piece bark after the number of the girdling edge teeth is increased, the two functions can meet the requirements of different operation, and the two functions can be converted by increasing or reducing the number of the girdling edge teeth; the edge-changeable girdling device has outstanding substantial characteristics and evident progress and can increase the girdling efficiency and effect and relieve labor intensity.

A laparoscopic surgery built-in suction device includes a body, a flow duct, a thick conduit and a thin conduit, the upper end of the main body is provided with a connecting flange, a first conduit penetrating through the connecting flange is installed on the inner side of the connecting flange, second catheter, A rotating lever is mounted at the center of the inner side of the main body through arotating shaft, first movable conduits are respectively arranged on the inner sides of the two ends of the rotating lever, second movable catheter, the first movable catheter, the upper end of the second movable conduit is respectively connected with the first conduit, and the lower end of the second conduit is connected with the bellows. The outer sides of the lower ends of the first movable conduit and the second movable conduit are provided with liquid inlet holes. The outer side of the second movable conduit is provided with a fixing rod passing through the main body, and the fixing rod is provided with a finger ring near the outer end of the main body. The invention is convenient for fast switching between thick and thin conduits, and can effectively prevent the internal conduit of the device from being blocked.

The invention relates to the field of electric power engineering, and concretely relates to a high-voltage power capacitor porcelain bottle transfer device. The device comprises a base, a transferringmechanism is composed of a plurality of transfer seats, a cavity is formed in each transfer seat, a storage drawer is arranged on each cavity, the adjacent transfer seats are connected through a connecting mechanism, each connecting mechanism comprises a connecting seat and a connecting plate, the connecting plate and the connecting seat are respectively mounted on two adjacent transfer seats, aconnecting rod is arranged at the lower side of each connecting plate, a limiting cavity is formed in each connecting seat, an inclined face is arranged at the upper end of each limiting cavity, a plurality of limiting rings are arranged at the positions, close to the inclined face, in each limiting cavity, springs are arranged on the lower sides of the limiting rings, the lower ends of the springs are connected with the lower ends of the limiting cavities, and the connecting rods are inserted into the limiting cavities and penetrate through the limiting rings. Due to the structural arrangement of the device, the number of the transfer seats can be increased or decreased according to the number of products needing to be transferred, different use requirements are met, and practicability ishigh.

The invention provides a connecting terminal. The connecting terminal comprises a positioning piece and a plurality of terminals, wherein one end of each of the plurality of terminals is connected with the first male insertion sheet, and the other end of each of the plurality of terminals is connected with the second male insertion sheet. The plurality of terminals are detachably connected, and the positioning part is arranged on the plurality of terminals in a penetrating manner in sequence. According to the connecting terminal provided by the invention, the plurality of terminals are detachably connected; the number of the terminals can be increased or decreased, the number of the terminals is increased or decreased by calculating the current-carrying capacity of each terminal so as to meet the requirement of current, the terminals only need to be stamped and formed by one set of die, so one set of die can cover the whole series of current levels, and the die opening cost is furtherreduced.

The invention relates to the field of gardening and in particular to an automatic bouquet instrument which comprises a bracket, wherein an upper shaping disc is arranged at the upper end of the bracket, a bundling mechanism and a lower shaping disc are sequentially arranged at the upper end of the bracket downwards; a base is arranged at the bottom of the bracket; a garbage box is arranged on the base; shaping holes with the same amount are both formed in the upper shaping disc and the lower shaping disc; the upper shaping disc has a rotatable structure; and the lower shaping disc is connected with a flat cutting device. According to the automatic bouquet instrument, a whole bouquet can be shaped, and sprays of the shaped bouquet are in a spiral shape; in addition, the automatic bouquet has a simple and easy structure, is convenient in operation and can be widely applied to various environments; and the amount of the shaping holes can be increased or reduced according to the actual needs, shaping plates with different amount of the shaping holes can be used for the flower type needs with different amounts by only changing upper and lower shaping plates with the corresponding shaping holes.

A laparoscopic surgery built-in suction device includes a body, a flow duct, a thick conduit and a thin conduit, the upper end of the main body is provided with a connecting flange, a first conduit penetrating through the connecting flange is installed on the inner side of the connecting flange, second catheter, A rotating lever is mounted at the center of the inner side of the main body through arotating shaft, first movable conduits are respectively arranged on the inner sides of the two ends of the rotating lever, second movable catheter, the first movable catheter, the upper end of the second movable conduit is respectively connected with the first conduit, and the lower end of the second conduit is connected with the bellows. The outer sides of the lower ends of the first movable conduit and the second movable conduit are provided with liquid inlet holes. The outer side of the second movable conduit is provided with a fixing rod passing through the main body, and the fixing rod is provided with a finger ring near the outer end of the main body. The invention is convenient for fast switching between thick and thin conduits, and can effectively prevent the internal conduit of the device from being blocked.

The invention provides a ground wire connecting device of a vertical rod welding machine. The ground wire connecting device comprises an insulating plate seat I, an insulating plate, an insulating plate seat II, a support, a coupling, a ground wire connecting rod, a ground wire bonding head, a spring seat head, a spring seat, a tension spring and a limiting bolt. The ground wire connecting deviceof the vertical rod welding machine is characterized in that the insulating plate is mounted at the upper part of the insulating plate seat I, the insulating plate seat II is mounted at the upper partof the insulating plate, the support is mounted on the left side of the insulating plate seat II, the coupling is mounted at the upper part of the insulating plate seat II, one end of the coupling isprovided with the ground wire bonding head, the ground wire connecting rod is mounted in the middle of the ground wire bonding head, a tension spring fixing seat I is mounted on the left side of theground wire connecting rod, and the left end of the support is connected with a tension spring fixing seat II through the tension spring. The problem that during ignition for welding of the vertical rod welding machine, a ground wire can not be connected is solved, the ground wire connecting device is installed on the vertical rod welding machine, the ground wire is installed on the ground wire connecting rod, the ground wire bonding head is placed on a vertical rod disc chuck, the use is easy and convenient, and the number of the device can be increased and decreased according to the number of the welding disc chuck.

The invention discloses a computing device, an integrated circuit chip, a board card and a method for executing computing operation by using the computing device. Wherein the computing device can be included in a combined processing device, and the combined processing device can further comprise a universal interconnection interface and other processing devices. And the computing device interacts with other processing devices to jointly complete the computing operation specified by the user. The combined processing device can further comprise a storage device, and the storage device is connected with the equipment and the other processing devices and used for storing data of the equipment and the other processing devices. According to the scheme disclosed by the invention, the operation efficiency of operation in various data processing fields including the artificial intelligence field can be improved, so that the overall overhead and cost of the operation are reduced.

The invention relates to the field of gardening, in particular to a method for automatically bundling a bouquet. The method comprises the following steps that 1, each flower branch sequentially penetrates through a corresponding hole formed in an upper reshaping disc and a corresponding hole formed in a lower reshaping disc; 2, the height of the flower branches is fixed as needed through positioning clamps arranged on inner split sheets of the upper reshaping disc; 2, the upper reshaping disc is rotated, the upper portion of the bouquet can be driven to rotate while the upper reshaping disc is rotated, and then spiral bouquet reshaping is completed; 4, a bundling mechanism is regulated to bundle and fix the bouquet; 5, the portions, exposing out of the lower reshaping disc, of the flower branches are cut off, so that the bottoms of the flower branches of the whole bouquet are flush; 6, electromagnetic induction disappears, and all the positioning clamps are loosened; 7, the bouquet and the upper reshaping disc are taken out. According to the method, the whole bouquet can be reshaped, and the flower branches of the reshaped bouquet are spiral; the structure is simple and easy to use, operation is convenient, and the method can be widely applied to various environments.

The invention discloses a detection device of an optical ghost image near an optical axis, and the detection device is used in an optical system. The detection device comprises a laser, wherein a collimating lens, a half-passing and half-reflecting lens and a total reflective lens are arranged in turn in the laser beam output direction of the laser; an aperture with a small hole and a CCD charge coupled device)-array detector provided with an adjustable attenuator are arranged in turn in the reflected light directions of the half-passing and half-reflecting lens and the total reflective lens; the CCD-array detector is placed on a linear guide rail with location scales; the CCD-array detector is driven by a driver to move on the guide rail; the input end of the driver is connected with the output end of a computer; and the output end of the CCD-array detector is connected with the input end of the computer. The detection device provided by the invention can verify the ghost image in the optical system, thus increasing the safety of the high-power laser system. The device is suitable for the detection of the optical ghost image on the axis of the large-diameter lens; the device has the advantages of being simple in structure, convenient to move and easy to realize and overcoming the defect that the broad beam ghost image is difficult to detect.

The invention discloses an optical network unit (ONU) certification authorization management method based on License resource control and relates to the field of ONU management methods. According to the method, ONUs apply License resources, if the License resources are applied, a master control disk issues the authorization information and service configuration of the ONUs to a service interface disk, and if the License resources are not applied, the master control disk does not issue the authorization information and the service configuration; when the ONUs are replaced, the ONUs are respectively set as class I and class II, wherein the class-I ONUs and an optical line terminal (OLT) belong to the same manufacturer, and the class-II ONUs and the OLT belong to different manufacturers; if the class-I ONUs are replaced or the class-II ONUs are replaced, the replaced ONU and the new ONU do not apply and release the License resources; and if the class-I ONUs and the class-II ONUs are replaced, the replaced ONU releases the License resources before being replaced, and the new ONU applies the License resources. By adoption of the method, the License resources are reasonably utilized, leakage is avoided, and operational cost is reduced.

The invention discloses a method, a device and a system for storing and searching Session information. The storing method comprises the following steps of receiving a request which is sent by a user terminal and is used for writing one Session information, recording the time information for receiving the request, determining the number of first storage devices which are already added in the system before the recorded time information according to the time information when each first storage device is added in the system, generating a numerical value which is used for calculating a modulus and extracting a remainder, extracting the remainder by dividing the generated numerical value by the determined number, taking the obtained remainder as a label of one first storage device, determining a corresponding first storage device, writing the Session information sent by the user terminal in the first storage device, and feeding back the recorded time information corresponding to the Session information and the numerical value which is used for calculating the modulus and extracting the remainder to the user terminal. The accuracy of visiting the Session information by a user is increased.

The invention belongs to the technical field of rail transit vehicle braking, and discloses a magnetic track braking system and a magnetic track braking control method. The magnetic track braking system comprises a power supply, a control device and an electromagnet assembly. The electromagnet assembly comprises an iron core part, a pole shoe part below the iron core part and a coil group consisting of a plurality of groups of coils; the coils in the coil group are arranged in the length direction or the width direction of a rail, and adjacent coils are insulated and isolated; and the coils in the coil group are divided into a plurality of independent groups, and the control device independently controls the independent groups of coils and gradually increases or decreases the number of excitation coils, so that the magnetic force of the electromagnet assembly is gradually controlled. The electromagnet assembly of the magnetic track braking system is provided with a plurality of sets of electromagnetic coils which are independently controlled, and the magnetic gradient change of the electromagnet assembly is controlled by controlling the number of magnet exciting coils. When a local coil breaks down, other independent groups can still work normally, so that the whole magnetic track braking system is degraded for use.

The invention relates to the technical field of manufacturing of agricultural machinery, specifically to a hand-held embrocation weeder. The hand-held embrocation weeder comprises a herbicide box, a water pipe, a first protective plate and a second protective plate, wherein the water pipe comprises a hand-holding part, a connecting part and an embrocating part; one end of the connecting part is obliquely connected with the hand-holding part; the other end of the connecting part is obliquely connected with the embrocating part; the other end of the embrocating part opposite to the end of the embrocating part connected with the connecting part is a sealed end; the other end of the hand-holding part opposite to the end of the hand-holding part connected with the connecting part is provided with a hand-push water presser which is connected with a pipeline of the herbicide box; the hand-holding part is provided with a handle; the embrocating part is provided with a plurality of through holes and wrapped with sponge; and the hand-push water presser sends a herbicide in the herbicide box into the water pipe, and the herbicide immerses the sponge through the through holes and is directly embrocated for weeding through the sponge. The hand-held embrocation weeder provided by the invention has small application hazard and strong applicability.

The invention discloses a plastic profile multi-position welding machine, which comprises a first welding machine head, a second welding machine head and one or two intermediate welding machine heads, wherein the intermediate welding machine heads are positioned between the first welding machine head and the second welding machine head; the first welding machine head and the second welding machine head are both provided with front pincers, rear pincers, an L-shaped heating plate and an L-shaped positioning plate; working feed directions of the first welding machine head and the second weldingmachine head are parallel and opposite to an X axial direction; the first welding machine head forms 90 degrees anticlockwise rotation with a direction of a pincer port welded routinely and linearly;the second welding machine head forms clockwise rotation of 90 degrees with the direction of the pincer port welded routinely and linearly; and each intermediate welding machine head includes four pincer groups, wherein two groups of opposite angles are opposite relatively to the working feed direction and both parallel to the X axial direction, and another two groups of opposite angles are opposite relatively to the working feed direction and both parallel to a Y axial direction. The invention further discloses a method for welding doors and windows which are shaped in an inverted Chinese character wang and for welding doors and windows with two cross-shaped mullions arranged in the middle. By adopting the plastic profile multi-position welding machine and the welding method, pluralitiesof the plastic doors and windows with the cross-shaped mullions or in the shaped of the Chinese character wang can be welded and formed at one time.

The invention relates to the technical field of power equipment, in particular to a modular electric meter box. The modular electric meter box comprises an electric meter box body, wherein a box dooris arranged at a front side of the electric meter box body, a strut is arranged at an upper end of the electric meter box body, a rainproof cover is arranged at an upper end of the strut, the electricmeter box body comprises a box top, a box bottom and a plurality of box bodies, a limitation convex block and a limitation groove are respectively arranged at an upper end and a lower end of each boxbody, and adjacent box bodies are connected by matching of the limitation convex block and the limitation groove. In the device structure, the electric meter box body comprises the box top, the box bottom and the box bodies, the numbers of the box bodies can be randomly increased or reduced according to the numbers of electric meters, different application demands are satisfied, the modular electric meter box is not needed to be specially customized, the modular electric meter box is convenient to use and simple to process, and the application cost is reduced.