Piezoresistor assembling device

Abstract

The invention discloses a piezoresistor assembling device, and belongs to the technical field of electronic component manufacturing equipment. The problems that existing piezoresistor assembly mostly depends on manual or semi-automatic equipment, production efficiency is low, consistency is poor, all mechanisms are lack of effective cooperation and need manual intervention, resistor insertion deflection is prone to occurring, sand filling is uneven, and cover plate correction precision is low are solved. The device comprises a shell feeding mechanism, a resistor feeding mechanism, a cover plate feeding mechanism, a material inserting mechanism, a sand filling mechanism, a cover plate assembling mechanism, a driving mechanism, a supporting mechanism and a control system. The supporting mechanism supports all the mechanisms, the driving mechanism drives the shell to move at the stations of the material inserting mechanism, the sand filling mechanism and the cover plate assembling mechanism, the control system coordinates all the mechanisms to act, and all the mechanisms sequentially complete feeding of the shell, the resistor and the cover plate, insertion of the resistor into the shell, sand filling and cover plate assembling. The device is mainly used for automatically completing full-process assembly of the piezoresistor, continuous automatic production is achieved, and the assembly efficiency and the product consistency are improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electronic component manufacturing equipment, and particularly relates to a varistor assembling device. BACKGROUND

[0002] At present, the assembling and production of varistors still largely rely on manual or semi-automatic equipment. The main process includes inserting the resistor into the shell, filling the filler, installing the cover plate, and subsequent correction and compression, etc. Due to the large number of processes and high operation precision requirements, the manual operation mode has the problems of low production efficiency and poor consistency. Especially in the resistor insertion and sand filling links, the operator needs to repeatedly perform the actions of taking, placing, aligning and filling, which is labor-intensive and prone to cause the product qualification rate to decrease due to fatigue.

[0003] Although the semi-automatic equipment partially replaces manual operation, there is often a lack of effective cooperation between the units, and the feeding and discharging and process conversion still need manual intervention, making it difficult to realize continuous production. In addition, due to the small size of the resistor and the narrow opening of the shell, the mechanical insertion is prone to cause the element lug to be skewed or damaged, affecting the subsequent cover plate assembly. During the sand filling process, the sand is prone to spill and uneven filling, which will also cause unstable electrical performance.

[0004] In the cover plate assembly stage, the resistor lug needs to be corrected in position to ensure that the cover plate can be smoothly inserted and compressed. The existing method mostly relies on manual visual adjustment, which has the problems of low correction accuracy and uneven operation rhythm, and is difficult to meet the requirements of batch production. At the same time, due to the lack of unified beat control and interconnection between mechanisms, the stability and continuity of the whole assembly process are poor.

[0005] When trying to improve the automation level in the past, several technical difficulties have been faced. For example, how to realize reliable feeding and accurate positioning of the shell, resistor and cover plate, how to coordinate the actions of multiple mechanisms to avoid interference or waiting, and how to prevent sand overflow or false filling during sand filling. In addition, the system also needs to have certain detection capability, such as judging whether the resistor is inserted or not, whether the lug is skewed or not, etc., to improve the yield of finished products. These requirements put high demands on the timing design of the mechanism, the response speed of the control system and the layout of the sensor, and the traditional equipment is difficult to fully meet the requirements. SUMMARY

[0006] An object of the present application is to solve at least the above problems and to provide at least the advantages to be explained later.

[0007] Another object of the present application is to provide a varistor assembling device which can automatically complete a series of operations such as feeding of the shell, resistor and cover plate, resistor insertion, sand filling, cover plate correction and compression assembly, realize continuous automatic production of varistors, and effectively improve the assembly efficiency and product consistency.

[0008] In order to achieve the objects and other advantages of the present application, a piezoresistor assembling device is provided, comprising a shell feeding mechanism, a resistor feeding mechanism, a cover plate feeding mechanism, a inserting mechanism, a sand filling mechanism, a cover plate assembling mechanism, a driving mechanism, a supporting mechanism and a control system, the supporting mechanism is used for supporting the shell feeding mechanism, the resistor feeding mechanism, the inserting mechanism, the sand filling mechanism, the cover plate feeding mechanism, the cover plate assembling mechanism and the driving mechanism; the driving mechanism is connected with the inserting mechanism, the sand filling mechanism and the cover plate assembling mechanism to drive the shell to move between the workstations of the inserting mechanism, the sand filling mechanism and the cover plate assembling mechanism; the control system is electrically connected with the shell feeding mechanism, the resistor feeding mechanism, the cover plate feeding mechanism, the inserting mechanism, the sand filling mechanism, the cover plate assembling mechanism and the driving mechanism to coordinate the actions of the mechanisms. The shell feeding mechanism transports the shells to the inserting mechanism one by one. The resistor feeding mechanism transports the resistors to the inserting mechanism one by one. The cover plate feeding mechanism transports the cover plates to the cover plate assembling mechanism one by one. The inserting mechanism receives the shells and the resistors, inserts the received resistors into the shells, and then transports them to the sand filling mechanism. The sand filling mechanism fills the shells with sand, and then transports them to the cover plate assembling mechanism after completion. The cover plate assembling mechanism sequentially completes the position correction of the resistor tabs, the cover plate insertion and the cover plate pressing operation, that is, the assembling of the resistor and the shell is completed, and the piezoresistor finished product is obtained.

[0009] Preferably, the shell feeding mechanism comprises a shell vibration moving mechanism and a shell vibration feeding disc, and the shells output one by one by the shell vibration feeding disc are transported to the next process by the shell vibration moving mechanism.

[0010] Preferably, the resistor feeding mechanism comprises: a resistor vibration feeding disc; a resistor vibration moving mechanism connected with the resistor vibration feeding disc to transport the resistors output one by one by the resistor vibration feeding disc to a feeding workstation; a resistor pushing mechanism comprising a resistor pushing rod and a resistor positioning rod, the resistor pushing rod is arranged at the side of the resistor vibration moving mechanism to push the resistors out of the feeding workstation, and the resistor positioning rod is arranged above the resistor vibration moving mechanism to extrude and position the resistors beside the feeding workstation; a first resistor clamping mechanism arranged beside the feeding workstation and opposite to the resistor pushing rod; The control system controls the resistor positioning rod to move downward to extrude and position the resistors beside the feeding workstation, and the resistor pushing rod pushes the resistors on the feeding workstation out, so that the first resistor clamping mechanism clamps the resistors to the next process.

[0011] Preferably, the inserting mechanism comprises: a second resistance clamping mechanism, which is located opposite to the first resistance clamping mechanism to receive the resistance transferred by the first resistance clamping mechanism; a first shell moving guide rail, which is located at the end of the shell vibrating moving mechanism and is higher than the shell vibrating moving mechanism; a shell upward pushing mechanism, which is located below the end of the shell vibrating moving mechanism to push the shell at the end of the shell vibrating moving mechanism upward; a shell right pushing mechanism, which is arranged at the beginning of the first shell moving guide rail to push the shell pushed upward by the shell upward pushing mechanism into the first shell moving guide rail; a first shell pushing mechanism, which is arranged below the first shell moving guide rail and is driven by the driving mechanism to push the shell to move in the first shell moving guide rail; a first shell clamping mechanism, which comprises a first clamping plate and a first air cylinder, the first clamping plate is arranged on the first shell moving guide rail and is located opposite to the second resistance clamping mechanism, and the first air cylinder drives the first clamping plate to reciprocate; wherein, when the first shell pushing mechanism pushes the shell to the inserting position on the first shell moving guide rail, the first air cylinder drives the first clamping plate to extend forward to fix the shell, and the second resistance clamping mechanism inserts the resistance clamped into the shell below the inserting position.

[0012] Preferably, the first shell pushing mechanism comprises a first up-down reciprocating mechanism and a first left-right reciprocating mechanism, and the first up-down reciprocating mechanism comprises: a positioning cylinder, which is arranged on the table of the supporting mechanism and penetrates the table; a first U-shaped rod, the free end of which is slidably arranged below the table and extends above the table, and a guide rod is arranged at the opening of the first U-shaped rod; a first connecting rod, which is a Z-shaped rod, one end of the first connecting rod is hinged to the bottom of the first U-shaped rod, and the other end is hinged to the lower side of the table, and a roller is arranged on the first connecting rod; a first driving wheel, which is arranged on the driving shaft of the driving mechanism and is located below the table, and a first guide groove is arranged on the side of the first driving wheel, and the roller is in rolling fit with the first guide groove; wherein, when the driving mechanism drives the first driving wheel to rotate, the first connecting rod drives the first U-shaped rod to reciprocate up and down; the first left-right reciprocating mechanism comprises: a second U-shaped rod, which is arranged below the first shell moving guide rail, a long hole is arranged on the table, the free end of the second U-shaped rod extends above the table, a clamping groove is arranged on the side of the second U-shaped rod, a limiting groove is arranged below the table, and a limiting block is arranged on the second U-shaped rod, and the limiting block is in sliding fit with the limiting groove; The first poking assembly comprises an inverted L-shaped connecting rod, a poking rod, a tension spring and a plurality of poking teeth. The vertical front side of the inverted L-shaped connecting rod is provided with a clamping block which is in sliding clamping cooperation with a clamping groove. The vertical rear side of the inverted L-shaped connecting rod is provided with a supporting wheel which is supported above the guide rail. The poking rod is arranged on the horizontal part of the inverted L-shaped connecting rod. The plurality of poking teeth are arranged at equal intervals on the poking rod. One end of the tension spring is connected with the inverted L-shaped connecting rod, and the other end is connected with the bottom of the second U-shaped rod so that the supporting wheel always abuts against the guide rail. The second connecting rod is hingedly connected with the bottom of the second U-shaped rod. The second driving wheel is connected with the driving mechanism, and the second connecting rod is hingedly connected with the second driving wheel. When the second driving wheel rotates, the second U-shaped rod is driven to reciprocate left and right by the second connecting rod to drive the poking teeth to reciprocate left and right. The first up-down reciprocating mechanism drives the inverted L-shaped connecting rod to reciprocate up and down in the clamping groove to realize the up-down reciprocation of the poking teeth. When the poking teeth move upward, the poking teeth abut against the left side of the shell, and the shell moves on the first shell moving guide to realize the station transfer of the shell on the first shell moving guide. When the poking teeth move downward, the poking teeth are separated from the shell, and the poking teeth move left under the driving of the second driving wheel to prepare for the next rightward poking of the shell. The above process is repeated to continuously poke the shell into the first shell moving guide.

[0013] Preferably, the sand filling mechanism comprises: The intermediate frame is arranged at the middle part of the table top. The shell clamping and moving mechanism comprises a first clamping assembly and a second clamping assembly. The first clamping assembly comprises a plurality of first clamping rods, a second left-right reciprocating mechanism, a first clamping frame and a first swinging mechanism. The plurality of first clamping rods are arranged at equal intervals on the first clamping frame. The first clamping frame is slidably arranged on the second left-right reciprocating mechanism. The second left-right reciprocating mechanism is connected with the driving mechanism to drive the first clamping rods to reciprocate left and right by the driving mechanism. The first clamping frame is provided with a sliding groove. The second swinging mechanism is connected with the driving mechanism. The second clamping assembly is arranged below the first clamping assembly. The second clamping assembly is slidably arranged on both sides of the intermediate frame. The second clamping assembly comprises a plurality of second clamping rods arranged at equal intervals. The second clamping rods are driven by the second swinging rod mechanism to clamp and fix or loosen the shell. The sand unloading mechanism is arranged above the shell clamping and moving mechanism to fill sand into the shell clamped and moved by the shell clamping and moving mechanism to the sand filling station. The first clamping assembly and the second clamping assembly are alternately matched to realize the rightward movement of the shell to the moving station, specifically, when the second left-right reciprocating mechanism drives the first clamping assembly to move leftward to the end of the first shell moving guide rail, the first swinging mechanism drives the first clamping assembly to clamp the shell with the resistor, the second left-right reciprocating mechanism drives the first clamping assembly to move rightward by one station, at this time, the second clamping assembly clamps and fixes the shell, the first clamping assembly releases the shell, and the movement of the shell by one station is completed, when the shell moves to the sand filling station, the first clamping assembly is released, and the second clamping assembly is fixed at the same time, and the sand filling mechanism fills sand to the shell below.

[0014] Preferably, the end of the first shell moving guide rail is provided with a resistor photoelectric detector, when the resistor photoelectric detector detects that there is no resistor in the shell, the first clamping assembly releases the shell entering the sand filling station to make it fall from the shell clamping moving mechanism, specifically, the front first clamping rod opposite to the sand filling station is a hollow structure, and the inside is provided with a shell screening air cylinder, when the resistor photoelectric detector detects that there is no resistor in the shell, the shell screening air cylinder is contracted in the process that the first clamping rod clamps the shell to the sand filling station, and the shell falls due to the loss of clamping force.

[0015] Preferably, the cover plate assembling mechanism comprises: a cover plate vibration feeding disc; a cover plate vibration moving mechanism connected with the cover plate vibration feeding disc to output the cover plate to the next process block by block; a second shell moving guide rail provided at the end of the shell clamping moving mechanism, and the second shell moving guide rail is provided with a resistor correction station, a cover plate insertion station, a cover plate correction station and a cover plate pressing station; a resistor correction mechanism provided above the resistor correction station to correct the resistor tab after sand filling; a cover plate clamping mechanism provided at the end of the cover plate vibration moving mechanism and above the cover plate insertion station to insert the clamped cover plate into the tab; a cover plate correction mechanism provided above the cover plate correction station to correct the position of the cover plate; a cover plate pressing mechanism provided above the cover plate pressing station to press the cover plate into the shell; a second shell poking mechanism provided below the second shell moving guide rail to poke the shell transported by the first clamping assembly to the resistor correction station, the cover plate insertion station, the cover plate correction station and the cover plate pressing station in sequence, the second shell poking mechanism comprises a third left-right reciprocating mechanism and a second up-down reciprocating mechanism, the third left-right reciprocating mechanism is connected with the first left-right reciprocating mechanism through a linkage rod to poke and transport the shell at the previous station to the next station, and the second up-down reciprocating mechanism is connected with the driving mechanism; The work station fixing mechanism is arranged beside the second shell moving guide rail to position the shell in each work station, and comprises a front fixing part and a rear fixing part. The front fixing part is connected with the third swing lever mechanism, and the third swing lever mechanism is connected with the driving mechanism to drive the front fixing part to reciprocate forward and backward. The rear fixing part is driven by the telescopic assembly.

[0016] Preferably, the cover plate assembling mechanism further comprises a tab correcting mechanism, which comprises: The tab front and back correcting mechanism is arranged above the tab front and back correcting work station of the second shell moving guide rail to correct the tab front and back; The tab left and right correcting mechanism is arranged above the tab left and right correcting work station of the second shell moving guide rail to correct the tab left and right; The second shell moving mechanism moves the shell from the cover plate pressing mechanism work station to the tab front and back correcting mechanism, and the tab front and back correcting mechanism moves downward to correct the tab front and back. Then the second shell moving mechanism moves the shell forward to the tab left and right correcting work station, and the tab left and right correcting mechanism corrects the tab left and right. After the tab left and right correcting mechanism corrects the tab, the second shell moving mechanism moves the assembled and corrected product out.

[0017] Preferably, the receiving mechanism comprises: The receiving disc is connected with the tab correcting mechanism to receive the product pressure sensitive resistor moved forward by the tab correcting mechanism; The limiting mechanism comprises a first plate strip, a second plate strip, a pushing air cylinder and a lifting air cylinder. The first plate strip and the second plate strip are arranged on one side of the receiving disc to define a product channel on the side of the receiving disc. The pushing air cylinder is connected with the first plate strip, and the lifting air cylinder is connected with the second plate strip. The channel photoelectric sensor is arranged at the end of the product channel. The disc photoelectric sensor is arranged on the other side of the receiving disc away from the limiting mechanism. The second shell moving mechanism moves the product assembled in the tab correcting mechanism to the beginning of the product channel. The product is continuously moved to the product channel, and gradually moves to the end of the product channel. When the channel photoelectric sensor detects the product at the end of the product channel, the lifting air cylinder drives the second plate strip to lift, and the pushing air cylinder pushes the product out of the product channel through the first plate strip. The first plate strip and the second plate strip are reset. The process is repeated until the disc photoelectric sensor detects the product on the receiving disc, and the control system sends a disc changing signal.

[0018] The present application at least has the following advantages: Firstly, the present application significantly improves the production efficiency and product consistency of the piezoresistor by integrating the automatic mechanism design and centralized control system. Specifically, the present application device sets up a special shell feeding mechanism, a resistor feeding mechanism and a cover plate feeding mechanism, realizes the automatic, continuous and rhythmic supply of three core materials, fundamentally replaces the traditional manual feeding mode, and eliminates the production bottleneck caused by the different work rhythms of people. The driving mechanism and the control system work together to accurately drive the insertion mechanism, the sand filling mechanism and the cover plate assembly mechanism to act according to the preset time sequence, ensuring the seamless transfer and accurate positioning of the shell between multiple workstations. This highly coordinated automatic assembly line operation enables the resistance insertion, sand filling, cover plate correction and compression processes to be continuously carried out without interruption, greatly shortening the production cycle of single product, reducing the unit time cost, avoiding the quality fluctuations caused by manual operation, and ensuring the high consistency and reliability of the performance of batch products.

[0019] Secondly, the present application effectively solves the common quality defects in the sand filling process by precise mechanism design and action logic, improves the electrical performance and long-term reliability of the product. The cooperation of the sand filling mechanism and the shell clamping and moving mechanism is the key to achieve this effect. The shell clamping and moving mechanism adopts the alternating clamping and step conveying mode of the first clamping assembly and the second clamping assembly, which ensures that the shell can be stably and accurately positioned and fixed in the sand filling station, effectively preventing the sand from spilling due to the shaking or tilting of the shell during the sand filling process. The control system accurately controls the start and stop and flow of the sand filling mechanism, ensuring that the sand can be fully and uniformly filled into the gap around the resistor body inside the shell. This stable and accurate sand filling process avoids problems such as incomplete filling and missing filling, thereby ensuring that the piezoresistor product has stable capacitance, leakage current and voltage response characteristics, significantly improving the consistency of its electrical performance and long-term operation reliability in the circuit.

[0020] Third, the cover plate assembly mechanism of the application integrates multiple correction and pressing functions, greatly improving the yield and product structure stability of the final assembly through programmed precise operation. The mechanism sequentially contains the position correction of the resistance tab, the insertion of the cover plate, the position correction of the cover plate, and the complete process flow of the final pressing. The resistance correction mechanism first accurately positions and shapes the tab that may have a slight displacement after sand filling, laying a foundation for the smooth insertion of the cover plate. The cover plate clamping mechanism then accurately places the cover plate on the corrected tab. The cover plate correction mechanism then fine-tunes the placed cover plate to ensure it is in the best pressing position. Finally, the cover plate pressing mechanism presses the cover plate into the shell to the right position with controllable pressure, forming a firm mechanical connection and electrical contact. This series of gradual and progressive automated operations overcomes the defects such as misplacement, skew, and poor pressing that are difficult to avoid in manual assembly, ensuring the integrity and tightness of the internal structure of each finished product, thereby significantly reducing the failure risk caused by poor assembly and improving the overall yield.

[0021] Other advantages, objects, and features of the application will be apparent from the following description, and will be appreciated by those skilled in the art. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The structural schematic diagram of one technical solution of the application; Figure 2 The structural schematic diagram of one technical solution of the application; Figure 3 The structural schematic diagram of the resistance feeding mechanism and the insertion mechanism of one technical solution of the application; Figure 4 The structural schematic diagram of the insertion mechanism of one technical solution of the application; Figure 5 The structural schematic diagram of the sand filling mechanism and the cover plate assembly mechanism of the insertion mechanism of one technical solution of the application; Figure 6 The structural schematic diagram of the sand filling mechanism and the cover plate assembly mechanism of the insertion mechanism of one technical solution of the application; Figure 7 The structural schematic diagram of the cover plate assembly mechanism and the receiving mechanism of one technical solution of the application; Figure 8 The structural schematic diagram of the cover plate assembly mechanism, the tab correction mechanism, and the receiving mechanism of one technical solution of the application.

[0023] 100, shell feeding mechanism; 101, shell vibration feeding tray; 102, shell vibration moving mechanism; 103, shell; 200, resistance feeding mechanism; 201, resistance vibration feeding tray; 202, resistance vibration moving mechanism; 203, resistance; 300, inserting mechanism; 301, second resistance clamping mechanism; 302, first shell moving guide rail; 303, first clamping plate; 304, first air cylinder; 305, positioning cylinder; 306, first U-shaped rod; 307, first connecting rod; 308, second U-shaped rod; 309, long strip-shaped through hole; 310, right top rod; 311, right top rail; 312, right top mounting frame; 313, inverted L-shaped connecting rod; 314, shifting rod; 315, shifting tooth; 401, sand discharging mechanism; 402, first clamping rod; 403, guide rod; 404, guide block; 405, second swinging rod mechanism; 406, first clamping frame; 407, middle frame; 502, first resistance correction mechanism; 503, second shell fixing mechanism; 504, cover plate vibration feeding tray; 505, cover plate vibration moving mechanism; 506, second shell moving guide rail; 507, cover plate clamping mechanism; 508, first shell fixing mechanism; 509, third shell fixing mechanism; 510, cover plate position correction mechanism; 511, resistance front and back correction mechanism; 512, cover plate pressing mechanism; 513, tab left and right correction mechanism; 514, tab front and back correction mechanism; 515, second shell shifting mechanism; 600, receiving mechanism; 700, control system; 800, supporting mechanism. DETAILED DESCRIPTION

[0024] The application will be further described in conjunction with the drawings, so that those skilled in the art can implement the application according to the description and drawings.

[0025] It should be understood that the terms such as "have", "contain" and "include" used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0026] It should be noted that in the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "arrangement" should be understood broadly, for example, it can be fixedly connected, arranged, or detachably connected, arranged, or integrally connected, arranged. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. The orientations or positional relationships indicated by the terms "transverse", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0027] As Figures 1-8 shown, the present application provides a pressure sensitive resistor assembly device, comprising a shell feeding mechanism 100, a resistor feeding mechanism 200, a cover plate feeding mechanism, a inserting mechanism 300, a sand filling mechanism, a cover plate assembly mechanism, a driving mechanism, a supporting mechanism 800 and a control system 700, the supporting mechanism 800 is used for supporting the shell feeding mechanism 100, the resistor feeding mechanism 200, the inserting mechanism 300, the sand filling mechanism, the cover plate feeding mechanism, the cover plate assembly mechanism and the driving mechanism; the driving mechanism is connected with the inserting mechanism 300, the sand filling mechanism and the cover plate assembly mechanism to drive the shell 103 to move in the station of the inserting mechanism 300, the sand filling mechanism and the cover plate assembly mechanism; the control system 700 is electrically connected with the shell feeding mechanism 100, the resistor feeding mechanism 200, the cover plate feeding mechanism, the inserting mechanism 300, the sand filling mechanism, the cover plate assembly mechanism and the driving mechanism to coordinate the actions of each mechanism. The shell feeding mechanism 100 transports the shells 103 to the inserting mechanism 300 one by one. The resistor feeding mechanism 200 transports the resistors 203 to the inserting mechanism 300 one by one. The cover plate feeding mechanism transports the cover plates to the cover plate assembly mechanism one by one. The inserting mechanism 300 receives the shells 103 and the resistors 203, inserts the received resistors 203 into the shells 103, and then transports them to the sand filling mechanism. The sand filling mechanism fills sand into the shells 103, and then transports them to the cover plate assembly mechanism after completion. The cover plate assembly mechanism sequentially completes the position correction of the resistor tab, the cover plate insertion and the cover plate pressing operation, that is, the assembly of the resistor and the shell 103, and obtains the finished product of the pressure sensitive resistor.

[0028] The pressure sensitive resistor assembly device comprises a shell feeding mechanism 100, a resistor feeding mechanism 200, a cover plate feeding mechanism, an inserting mechanism 300, a sand filling mechanism, a cover plate assembly mechanism, a driving mechanism, a supporting mechanism 800 and a control system 700. The supporting mechanism 800 adopts an aluminum alloy profile frame. The driving mechanism can select a servo motor, the rated power of which can be 400 watts, and the repeat positioning accuracy is 0.02 millimeters. The control system 700 can adopt a PLC controller. These mechanisms are fixed on the supporting mechanism 800 by a bolt connection mode, wherein the driving mechanism is installed below the table top of the supporting mechanism 800, and the control system 700 is installed in a separate electric control box. The working process of the whole device is as follows: first, each feeding mechanism transports the materials to the designated position, and then each executing mechanism sequentially completes the resistor insertion, sand filling and cover plate assembly operations.

[0029] The shell feeding mechanism 100 can be selected as a vibrating disc feeding device, the vibration frequency can be adjusted between 50 Hz and 60 Hz, and the conveying track width can be adjusted to 10-15 mm according to the size of the shell 103. The resistance feeding mechanism 200 also adopts a vibrating disc feeding device, of course, a step motor driven linear feeder can also be used, and the feeding speed can be set to 60-80 per minute. The cover plate feeding mechanism can also be selected as a vibrating disc feeding device, of course, a belt conveying method can also be selected, and the belt speed can be adjusted between 0.1 m / s and 0.3 m / s. The insertion mechanism 300 can be configured with a pneumatic gripper, the clamping force can be set in the range of 0.5-1.5 N, and the stroke can be adjusted to 20-30 mm. The sand filling mechanism controls the amount of sand entering the shell 103 by controlling the opening and closing of the hopper and the sand leakage time of the hopper.

[0030] In another technical solution, the shell feeding mechanism 100 includes a shell vibration moving mechanism 102 and a shell vibration feeding disc 101, and the shells 103 output one by one by the shell vibration feeding disc 101 are conveyed to the next process by the shell vibration moving mechanism 102.

[0031] The shell vibration feeding disc 101 can be selected as an electromagnetic vibrating disc. The vibrating disc body can be made of 304 stainless steel material, and the track surface can be polished to reduce friction resistance. The vibrating disc is fixed on one end of the support mechanism 800 through a support, and is located at the left front end of the entire device. In the working process, the vibrating disc generates directional vibration to make the shells 103 orderly arranged along the spiral track and output one by one to the receiving port of the vibration moving mechanism.

[0032] The shell vibration moving mechanism 102 can adopt a linear vibrating feeder, and the conveying speed can be set to 40-60 shells 103 per minute. The guide rail can be made of hard aluminum alloy material, and the guide rail spacing can be adjusted to 10-15 mm. The vibrating feeder can be installed above the discharge port of the vibration feeding disc and connected with the support mechanism 800 through a support. The mechanism conveys the shells 103 along the linear guide rail forward by vibration, and ensures that the shells 103 maintain the correct posture during the conveying process through the baffle mechanism. When the shells 103 reach the end of the guide rail, the position signal is detected by the photoelectric sensor to provide preparation for the next process.

[0033] In another technical solution, the resistance feeding mechanism 200 includes: a resistance vibration feeding disc 201; a resistance vibration moving mechanism 202 connected with the resistance vibration feeding disc 201 to convey the resistance output one by one by the resistance vibration feeding disc 201 forward to the feeding station; The resistance pushing mechanism includes a resistance pushing rod and a resistance positioning rod, the resistance pushing rod is arranged beside the resistance vibrating moving mechanism 202 to push the resistance out of the feeding station, and the resistance positioning rod is arranged above the resistance vibrating moving mechanism 202 to position the resistance beside the feeding station; The first resistance clamping mechanism is arranged beside the feeding station and opposite to the position of the resistance pushing rod. The control system 700 controls the resistance positioning rod to move downward to position the resistance beside the feeding station, and the resistance pushing rod pushes the resistance on the feeding station out, so that the first resistance clamping mechanism clamps the resistance to the next process.

[0034] The resistance vibrating feeding disc 201 can be an electromagnetic vibrating disc. The vibrating disc body can be made of 304 stainless steel, and the track surface can be polished to reduce friction resistance. The vibrating disc is fixed on the side of the support mechanism 800 through a support and located at the starting end of the resistance feeding mechanism 200. In the working process, the vibrating disc generates directional vibration to make the resistance orderly arranged along the spiral track and output to the receiving port of the vibrating moving mechanism one by one, to provide continuous and stable resistance supply for the subsequent process.

[0035] The resistance vibrating moving mechanism 202 can adopt a linear vibrating feeder, and the conveying speed can be set to 60 to 80 resistors per minute. The guide rail can be made of hard aluminum alloy, and the guide rail spacing can be adjusted to 6 to 10 mm. The vibrating feeder can be installed at the discharging port of the vibrating feeding disc and connected with the support mechanism 800 through a support. The mechanism conveys the resistance along the linear guide rail to the feeding station through vibration, and ensures that the resistance maintains the correct direction and posture through the guide groove during the conveying process. When the resistance reaches the feeding station, the position signal is detected through the optical fiber sensor and transmitted to the control system 700.

[0036] The resistance pushing mechanism comprises a resistance pushing rod and a resistance positioning rod. The pushing rod can be a carbon steel rod with a diameter of 4 mm, the stroke can be set to 20 mm, and the pushing force can be adjusted to between 0.5 N and 1.5 N. The positioning rod can be a stainless steel rod with a diameter of 3 mm, and the pressing force can be set to between 0.3 N and 0.8 N. Both the resistance pushing rod and the resistance positioning rod are driven by air cylinders. The resistance pushing rod can be installed on the side of the vibration moving mechanism, and the resistance positioning rod can be installed above the vibration moving mechanism. During operation, the control system 700 first controls the resistance positioning rod to move downward to press and position the resistance next to the feeding station, and then the resistance pushing rod pushes the resistance on the feeding station out so that the first resistance clamping mechanism can clamp it. The first resistance clamping mechanism can be a pneumatic gripper, the clamping force can be adjusted to between 0.3 N and 0.8 N, the stroke can be set to 15 mm, and it can be installed on the side of the feeding station. After the first resistance clamping mechanism clamps the resistance, it is rotated 90° upward under the action of the stepping motor to provide the resistance for the next process.

[0037] In another technical solution, the inserting mechanism 300 comprises: a second resistance clamping mechanism 301 opposite to the first resistance clamping mechanism to receive the resistance transferred by the first resistance clamping mechanism; a first shell moving guide rail 302 at the end of the shell vibration moving mechanism 102, higher than the shell vibration moving mechanism 102; a shell upward pushing mechanism below the end of the shell vibration moving mechanism 102 to push the shell at the end of the shell vibration moving mechanism 102 upward; a shell right pushing mechanism at the beginning of the first shell moving guide rail 302 to push the shell 103 pushed upward by the shell upward pushing mechanism into the first shell moving guide rail 302; a first shell pushing mechanism below the first shell moving guide rail 302 driven by a driving mechanism to push the shell 103 to move in the first shell moving guide rail 302; a first shell clamping mechanism comprising a first clamping plate 303 and a first air cylinder 304, the first clamping plate 303 being arranged on the first shell moving guide rail 302 opposite to the second resistance clamping mechanism 301, and the first air cylinder 304 driving the first clamping plate 303 to move back and forth; wherein when the first shell pushing mechanism pushes the shell 103 to the inserting station on the first shell moving guide rail 302, the first air cylinder 304 drives the first clamping plate 303 to extend forward to fix the shell 103, and the second resistance clamping mechanism 301 inserts the clamped resistance into the shell 103 below the inserting station.

[0038] The second resistance clamping mechanism 301 can include pneumatic clamping jaws and a lifting screw, the clamping force can be set in the range of 0.5 to 1.5 N, and the stroke can be adjusted to 20 to 30 mm. The clamping jaw material can be selected from aluminum alloy or stainless steel, and the surface can be hardened to improve wear resistance. The lifting screw is installed opposite the first resistance clamping mechanism and is fixed to the support mechanism 800 by a bracket. The pneumatic clamping jaws are fixed to the lifting screw to achieve the lifting of the pneumatic clamping jaws. In operation, the second resistance clamping mechanism 301 receives the resistance from the first resistance clamping mechanism, then rotates 90 degrees and descends to accurately insert the resistance into the shell 103 in the lower position. The first shell moving guide rail 302 can be made of hard aluminum alloy profile, the guide rail width can be adjusted to 12 to 18 mm, and the surface can be oxidized to reduce the friction coefficient. The first shell moving guide rail 302 is installed above the end of the shell vibration moving mechanism 102, and is 0 degrees to the horizontal plane.

[0039] The shell upper lifting mechanism can be driven by a small air cylinder, the cylinder stroke can be set to 15 to 25 mm, and the lifting speed can be adjusted to 50 to 100 mm per second. The lifting rod can be selected from a stainless steel rod with a diameter of 8 mm, and a polyurethane buffer head can be installed at the top. The mechanism is installed directly below the end of the shell vibration moving mechanism 102 and is fixed to the support mechanism 800 by a bracket. The shell right lifting mechanism can also be driven by an air cylinder, the cylinder stroke can be set to 20 to 30 mm, and the thrust can be adjusted to 2 to 5 N. The lifting rod can be selected from a carbon steel rod with a diameter of 6 mm, and a nylon guide head can be installed at the top. The mechanism is installed on the side of the beginning of the first shell moving guide rail 302.

[0040] The toggle tooth 315 can be made of POM material, and the tooth pitch can be set to 25 to 35 mm. The first shell toggle mechanism is installed below the first shell moving guide rail 302 and connected to the guide rail by a slider to allow the first shell toggle mechanism to reciprocate below the first shell moving guide rail 302. The first shell clamping mechanism includes a first clamping plate 303 and a first cylinder 304, the clamping plate can be made of steel material, the thickness can be 1 to 1.5 mm, the end has a U-shaped groove, and the cylinder can be selected from a small double-acting cylinder, the stroke can be set to 10 to 15 mm. The mechanism is installed at the insertion position of the first shell moving guide rail 302 and is fixed to the side of the guide rail. When the cylinder is extended, it pushes the U-shaped groove of the first clamping plate 303 to fix the shell 103 in the feeding position.

[0041] In another technical solution, the first shell toggle mechanism includes a first up-down reciprocating mechanism and a first left-right reciprocating mechanism, the first up-down reciprocating mechanism includes: A positioning cylinder 305 is provided on the table top of the support mechanism 800 and penetrates the table top; A first U-shaped rod 306, the free end of which is slidably passed through the positioning cylinder 305 from below the table top and extends above the table top, and a guide rail is arranged at the opening of the first U-shaped rod 306; A first connecting rod 307, which is a Z-shaped rod, one end of the first connecting rod 307 is hingedly connected to the bottom of the first U-shaped rod 306, and the other end is hingedly connected to the lower side of the table top, and a roller is arranged on the first connecting rod 307; A first driving wheel is arranged on the driving shaft of the driving mechanism and located below the table top, and a first guide groove is arranged on the side of the first driving wheel, and the roller is in rolling fit with the first guide groove; When the driving mechanism drives the first driving wheel to rotate, the first connecting rod drives the first U-shaped rod 306 to reciprocate up and down; The first left-right reciprocating mechanism comprises: A second U-shaped rod 308 is arranged below the first shell moving guide rail 302, and a long-hole 309 is arranged on the table top, the free end of the second U-shaped rod 308 extends above the table top, a clamping groove is arranged on the side of the second U-shaped rod 308, a limiting groove is arranged below the table top, a limiting block is arranged on the second U-shaped rod 308, and the limiting block is in sliding fit with the limiting groove; A first pushing assembly comprises an inverted L-shaped connecting rod 313, a pushing rod 314, a tension spring and a plurality of pushing teeth 315, a clamping block is arranged on the front side of the vertical part of the inverted L-shaped connecting rod 313, the clamping block is in sliding and clamping fit with the clamping groove, a supporting wheel is arranged on the rear side of the vertical part of the inverted L-shaped connecting rod 313, the supporting wheel supports above the guide rail, the pushing rod 314 is arranged on the horizontal part of the inverted L-shaped connecting rod 313, the plurality of pushing teeth 315 are arranged at equal intervals on the pushing rod 314, one end of the tension spring is connected with the inverted L-shaped connecting rod 313, and the other end is connected with the bottom of the second U-shaped rod 308, so that the supporting wheel always abuts against the guide rail; A second connecting rod, one end of which is hingedly connected to the bottom of the second U-shaped rod 308; A second driving wheel is connected with the driving mechanism, and the second connecting rod is hingedly connected with the second driving wheel; When the second driving wheel rotates, the second U-shaped rod 308 is driven to reciprocate left and right by the second connecting rod to drive the pushing teeth 315 to reciprocate left and right; The first up-down reciprocating mechanism drives the inverted L-shaped connecting rod 313 to reciprocate up and down in the clamping groove, so as to realize the up-down reciprocating movement of the pushing teeth 315; when the pushing teeth 315 move upward, the pushing teeth 315 abut against the left side of the shell 103, and the shell 103 moves on the first shell moving guide rail 302 to realize the station transfer of the shell 103 on the first shell moving guide rail 302; When the toggle tooth 315 moves downward, the toggle tooth 315 is disengaged from the outer shell 103, and the toggle tooth 315 is driven by the second drive wheel to move leftward to prepare for the next rightward toggle of the outer shell 103, and the process is repeated to continuously toggle the outer shell 103 into the first outer shell moving guide rail 302.

[0042] In the first up-and-down reciprocating mechanism, the positioning cylinder 305 can be made of brass, with an inner diameter of 12 mm and a height of 25 mm. The positioning cylinder 305 is fixed on the table top of the support mechanism 800 through threaded connection or welding, and the center hole is aligned with the through hole of the table top. The first U-shaped rod 306 can be bent from a stainless steel round bar with a diameter of 10 mm. The first U-shaped rod 306 passes through the positioning cylinder 305 from below the table top, and the guide rail rod at the opening thereof can be selected from a square tube with a side length of 6 mm. The first connecting rod 307 is Z-shaped and can be made of 45 steel, and the installed roller thereon can be made of bearing steel with a diameter of 20 mm. The first drive wheel can be made of cast iron, and the first guide groove on the side thereof can have a depth of 5 mm and a width of 8 mm. These components are installed below the table top and connected with the drive mechanism through a drive shaft.

[0043] In the first left-and-right reciprocating mechanism, the second U-shaped rod 308 can be made of carbon steel, with the free end passing through the elongated through hole 309 of the table top upward. The clamping groove on the side of the second U-shaped rod 308 can have a width of 10 mm and a depth of 5 mm. The limiting groove below the table top can be made of aluminum alloy profile with a width of 15 mm and a length of 200 mm. The limiting block on the second U-shaped rod 308 can be made of copper-based alloy with dimensions of 15x15x10 mm. The inverted L-shaped connecting rod 313 in the first toggle assembly can be cut from a Q235 steel plate with a thickness of 4 mm. The clamping block can be made of POM material with dimensions of 10x10x8 mm. The support wheel can be made of stainless steel with a diameter of 15 mm. The toggle rod 314 can be made of 65Mn spring steel, and the toggle tooth 315 installed thereon can be made of polyurethane material or stainless steel material with a tooth pitch of 200 mm and a tooth height of 100 mm. The tension spring can be made of piano wire with a wire diameter of 0.8 mm and a free length of 50 mm. The second connecting rod can be made of 304 stainless steel rod with a diameter of 6 mm and a length of 100 mm. The second drive wheel can be made of 45 steel with a diameter of 60 mm. These components are installed below the first outer shell moving guide rail 302 and connected with the drive mechanism through a drive shaft.

[0044] The first driving wheel drives the roller through the first guide groove to make the first connecting rod 307 swing up and down, thereby driving the first U-shaped rod 306 to drive the guide rail to move up and down. At the same time, the second driving wheel drives the second U-shaped rod 308 to move left and right through the second connecting rod, and the movement stroke is 200 mm. The inverted L-shaped connecting rod 313 slides up and down in the clamping groove while moving left and right with the second U-shaped rod 308. When the actuating tooth 315 moves upward, it contacts the left side of the shell 103 and pushes the shell 103 to move right by one station; when the actuating tooth 315 moves downward, it is separated from the shell 103 and is reset to the left under the action of the tension spring. By adjusting the rotation speed and stroke of the driving wheel, it can ensure that the actuating mechanism works stably and reliably, and realizes the accurate stepping conveying of the shell 103 on the guide rail. This mechanism design can effectively improve the conveying accuracy and stability, and provide reliable positioning guarantee for the subsequent process.

[0045] In another technical solution, the right shell lifting mechanism includes a right lifting rod 310, a right lifting rail 311, a right lifting mounting frame 312, and a material clamping photoelectric sensor. The right lifting rail 311 is arranged on the first shell moving guide rail 302. The right lifting mounting frame 312 is an L-shaped structure. The L vertical part of the right lifting mounting frame 312 is in sliding clamping cooperation with the first shell moving guide rail 302. The L horizontal part of the right lifting mounting frame 312 is provided with a lifting rod hole. The left end of the right lifting rod 310 has an external thread. The right lifting rod 310 is slidably sleeved in the lifting rod hole, and the free end faces the L vertical part of the mounting frame. The right end of the external thread of the right lifting rod 310 is provided with a first nut. The left end of the external thread is provided with a second nut. A spring is sleeved in the external thread to tension the right lifting rod 310 to the right side. The material clamping photoelectric sensor is arranged on the L horizontal part of the right lifting mounting frame 312. When the material clamping occurs, the right lifting rod 310 moves to the left to compress the spring. The right lifting rod 310 moves to the left. The material clamping photoelectric sensor detects that the right lifting rod 310 moves to the left, and reports the shell 103 clamping warning to the control system 700.

[0046] In another technical solution, the sand filling mechanism includes: The middle frame 407 is arranged in the middle of the table top. The shell clamping and moving mechanism comprises a first clamping assembly and a second clamping assembly, the first clamping assembly comprises a plurality of first clamping rods 402, a second left-right reciprocating mechanism, a first clamping frame 406 and a first swing mechanism, the plurality of first clamping rods 402 are arranged at equal intervals on the first clamping frame 406, the first clamping frame 406 is slidably arranged on the second left-right reciprocating mechanism, the second left-right reciprocating mechanism is connected with the driving mechanism to drive the first clamping rods 402 to reciprocate left and right through the driving mechanism, the first clamping frame 406 is provided with a sliding groove, the first swing mechanism is provided with a sliding block, the sliding block is in sliding fit with the sliding groove, and the second swing mechanism is connected with the driving mechanism; the second clamping assembly is arranged below the first clamping assembly, the second clamping assembly is slidably arranged on both sides of the intermediate frame 407, the second clamping assembly comprises a plurality of second clamping rods arranged at equal intervals, and the second clamping rods are driven through the second swing rod mechanism 405 to make the positionally opposite second clamping rods clamp and fix or loosen the shell 103; The sand discharging mechanism 401 is arranged above the shell clamping and moving mechanism to move the shell clamping and moving mechanism to the shell sand filling at the sand filling station; The first clamping assembly and the second clamping assembly are alternately matched to realize the movement of the shells 103 to the right one by one, specifically, when the second left-right reciprocating mechanism drives the first clamping assembly to move to the end of the first shell moving guide rail 302 to the left, the first swing mechanism drives the first clamping assembly to clamp the shell 103 provided with a resistor, the second left-right reciprocating mechanism drives the first clamping assembly to move to the right by one station, at this time, the second clamping assembly clamps and fixes the shell, the first clamping assembly loosens the shell 103, and the movement of the shell 103 by one station is completed, when the shell 103 moves to the sand filling station, the first clamping assembly is loosened, the second clamping assembly is tightened at the same time, and the sand filling mechanism fills the shell 103 below with sand.

[0047] The second clamping assembly comprises a plurality of second clamping rods and a second clamping frame, the clamping rods are arranged and fixed on the second clamping frame at equal intervals, and the interval can be between 100 mm and 300 mm. The number of second clamping rods on each side can be 5. The fixed plate is slidably arranged on the middle frame 407, more specifically, the middle frame 407 is provided with a second sliding rod, and the second clamping frame is provided with a sliding hole matched with the second sliding rod, the second clamping frame can be driven by the second swing rod mechanism 405 to realize clamping or releasing of the shell by the oppositely arranged second clamping rods. More specifically, the second sliding rod is provided with a spring to make the second clamping frame away from the middle frame 407, that is, the two oppositely arranged second clamping frames are in an open state when not being pressed, the second swing rod mechanism 405 comprises a swing arm, a transmission arm and a swing driving wheel, the swing driving wheel is arranged on the driving shaft, that is, when the driving motor drives the driving shaft to rotate, the swing driving wheel is synchronously driven to rotate, the swing driving wheel is also provided with a second guide groove, the middle part of the swing arm is hingedly fixed below the table top, the lower end of the swing arm is provided with a second roller matched with the second guide groove, the upper end of the swing arm is connected with the transmission arm, and the other end of the transmission arm is hingedly connected with the fixed plate. When the swing arm swings, the two sides of the fixed plate move towards each other or move away from each other.

[0048] The first clamping assembly can include five first clamping rods 402, a first clamping frame 406, a second left-right reciprocating mechanism and a first swing mechanism. The first clamping rods 402 are arranged on the first clamping frame 406 in an equidistant manner, and the first clamping frame 406 is slidably fixed on the second left-right reciprocating mechanism, that is, a first sliding rod is arranged on the second left-right reciprocating mechanism, and a first sliding hole is arranged on the first clamping frame 406, the first sliding rod and the first sliding hole are in sliding fit, and a spring is also arranged on the first sliding rod to make the first clamping rods 402 in an open state when not clamping the shell. The first clamping frame 406 is provided with a sliding groove, and the first swing mechanism is provided with a sliding block which is in sliding fit with the sliding groove. The first swing mechanism is connected with the driving mechanism to control the clamping or loosening of the shell through the first swing mechanism, that is, the first clamping frame 406 realizes the clamping function while swinging. The distance between the first clamping rods 402 can also be selected between 100 mm and 300 mm. The second left-right reciprocating mechanism is connected with the driving mechanism and can drive the first clamping rods 402 to realize left-right reciprocating movement. The second left-right reciprocating mechanism includes a reciprocating driving wheel, guide rods 403 and guide blocks 404. The guide rods 403 are arranged on both sides of a middle frame 407, and there are two guide rods 403 on each side. The reciprocating driving wheel is connected with the driving mechanism and is arranged below the table top. The surface of the reciprocating driving wheel is provided with a third guide groove. The two guide rods 403 are arranged in parallel on the table top through a support. The guide blocks 404 are slidably arranged on the guide rods 403. A connecting head is arranged below one of the guide blocks 404, and the connecting head is clamped into the third guide groove. The first clamping frame 406 is arranged on the guide blocks 404. The guide blocks 404 on both sides of the middle frame 407 are connected through the guide blocks 404 to make the guide blocks 404 on both sides of the middle frame 407 realize synchronous reciprocating movement. When the driving mechanism drives the reciprocating wheel to reciprocate, the guide blocks 404 are driven to reciprocate back and forth.

[0049] The second clamping rod can be made of stainless steel with a diameter of 5 mm, and the surface can be chrome plated to improve wear resistance. The second swing rod mechanism 405 can use a cam mechanism to realize the swing of the clamping rod. The first clamping rod 402 can be made of high-strength engineering plastic or aluminum alloy. These components are installed on the table top of the support mechanism 800 through bolt connection. The first clamping assembly is located above the second clamping assembly about 50 mm. During operation, when the second left-right reciprocating mechanism drives the first clamping assembly to move to the left to the end of the first shell moving guide rail 302, the first swing mechanism drives the first clamping rod 402 to clamp the shell containing the resistor. Then the second left-right reciprocating mechanism drives the first clamping assembly to move to the right by one station. At this time, the second clamping assembly clamps and fixes the shell, and the first clamping assembly loosens the shell, completing the transfer of one station. This is repeated to realize the forward movement of the shell.

[0050] The sand filling mechanism is arranged above the shell clamping and moving mechanism, and is used for sand filling operation on the shell moved to the sand filling station. The sand filling mechanism can be a vibrating feeding type sand filling device, and the sand filling amount can be adjusted by controlling the vibration frequency and the feeding time. The vibration frequency can be set to be between 40 Hz and 60 Hz, and the single sand filling time can be set to be 2 seconds to 5 seconds. The sand filling head can be a stainless steel funnel structure, the outlet diameter can be selected to be between 8 mm and 12 mm, and the funnel angle can be set to be 60 degrees to ensure smooth sand falling. The sand filling mechanism is installed on the cross beam of the supporting mechanism 800 through a support and is located directly above the sand filling station, and the distance from the station height can be adjusted to be within the range of 100 mm to 150 mm. The sand filling material can be quartz sand or alumina sand, and the particle size can be selected to be between 0.1 mm and 0.5 mm.

[0051] When the shell is fixed by the second clamping assembly at the sand filling station, the sand filling mechanism is started, and the sand is filled into the shell through the vibrating feeding mode. The sand filling time is set by the control system 700 according to the sand type and the filling amount requirement, and the mechanism is automatically stopped after the sand filling is completed. During the sand filling process, the second clamping assembly keeps stable clamping on the shell to prevent position deviation caused by vibration. The sand filling mechanism can be equipped with a material level detection sensor, which can monitor the sand stock in real time and send a replenishment signal to the control system 700 when the material level is lower than the set value.

[0052] The first clamping assembly and the second clamping assembly realize the stepwise movement of the shell to the right through alternating cooperation. The specific working process is as follows: when the second left-right reciprocating mechanism drives the first clamping assembly to move to the left to the end of the first shell moving guide rail 302, the first swinging mechanism drives the first clamping rod 402 to clamp the shell containing the resistor. Then the second left-right reciprocating mechanism drives the first clamping assembly to move to the right by one station, and the moving distance is consistent with the distance between the shifting rods 314. At this time, the second clamping assembly clamps and fixes the shell, and the first clamping assembly releases the shell, completing the transfer of one station. When the shell moves to the sand filling station, the first clamping assembly remains in the released state, the second clamping assembly tightly fixes the shell, and the sand filling mechanism performs sand filling operation on the shell located below.

[0053] The cooperation mode accurately controls the action time sequence of each mechanism through the control system 700, and ensures the coordinated operation of clamping and releasing actions. The driving mechanism can be a driving motor cooperating with a ball screw to realize accurate position control, and the repeat positioning accuracy can reach 0.1 mm. Position detection can be selected to be an optical sensor or an encoder to ensure the accuracy of station conversion. During the whole moving process, the shell always keeps a stable state, avoiding tilting or falling during station transfer, ensuring the stability and consistency of the sand filling operation.

[0054] A resistor photodetector is located at the end of the first housing movable guide rail 302 to detect whether a resistor is installed in the housing. The resistor photodetector can be a reflective photoelectric sensor with a detection distance set between 10 mm and 20 mm and a response time of no more than 1 millisecond. The sensor is mounted on the upper side of the end of the first housing movable guide rail 302 via a bracket, with the detection head facing toward the housing opening within the rail. When the absence of a resistor is detected in the housing, the control system 700 controls the first clamping assembly to release the housing entering the sand filling station, causing it to fall from the housing clamping mechanism, preventing the housing without a resistor from entering the next process. Specifically, the first clamping rod 402, located opposite the sand filling station, is hollow and houses a housing screening cylinder. This cylinder can be a small double-acting cylinder with a diameter of 12 mm and a stroke of 15 mm. The hollow clamping rod can be made of aluminum alloy, with an outer diameter of 8 mm and an inner diameter of 6 mm. When the resistor photodetector detects the absence of resistors in the housing, the clamping rod removes the housing from the end of the first housing guide rail 302 and moves it to the sand filling station. The piston rod of the housing screening cylinder retracts, causing the clamping rod to lose its grip and the housing to drop. A waste collection box can be located below the drop opening to collect housings without resistors. This detection mechanism effectively prevents products with missing resistors from entering subsequent processes, improving overall production quality.

[0055] In another technical solution, a resistance photoelectric detector is provided at the end of the first shell moving guide rail 302. When the resistance photoelectric detector detects that there is no resistance in the shell, the first clamping assembly will loosen the shell entering the sand filling station to make it fall from the shell clamping and moving mechanism. Specifically, the first clamping rod 402 opposite to the sand filling station is a hollow structure with a shell screening cylinder installed inside. When the resistance photoelectric detector detects that there is no resistance in the shell, the shell screening cylinder contracts during the process of the first clamping rod 402 clamping it to the sand filling station, and the shell loses its clamping force and falls.

[0056] When the housing is transported to the end station along the first housing moving guide rail 302, the photoelectric sensor detects each housing that passes through. The infrared light emitted by the sensor shines on the top of the housing. If there is a resistor element, the resistor's tabs will reflect or block the light, generating a detection signal. If there is no resistor in the housing, the light is not reflected or blocked by the resistor tabs, and the sensor determines that the part is missing. The detection signal is transmitted to the control system 700 in real time as a basis for determining whether to perform the rejection operation. This detection process is located after the insertion process and before the sand filling process, which can effectively prevent products with missing resistors from entering the subsequent process.

[0057] When the resistance photoelectric detector detects that there is no resistance in the shell, the control system 700 controls the first clamping assembly to release the corresponding shell before entering the sand filling station, so that it falls from the shell clamping and moving mechanism.

[0058] The specific workflow of the whole detection and rejection process is as follows: when the resistance photoelectric detector detects the absence of resistance in a certain shell, a signal is immediately sent to the control system 700. The control system 700 records the position information of the shell and tracks its movement process with the first clamping assembly. When the shell is transported to a position before the sand filling station, the control system 700 sends a contraction instruction to the corresponding shell screening cylinder. During the execution of the clamping operation, the cylinder remains in the contracted state, so that the clamping rod cannot generate effective clamping force. With the continuous movement of the first clamping assembly, the unclamped shell falls from the clamping position under the action of gravity and slides into the waste collection box through the guide chute.

[0059] In another technical solution, the cover plate assembly mechanism comprises: a cover plate vibration feeding tray 504; a cover plate vibration moving mechanism 505 connected with the cover plate vibration feeding tray 504 to output cover plates for the next process one by one; a second shell moving guide rail 506 arranged at the end of the shell clamping moving mechanism, and the second shell moving guide rail 506 is provided with a resistance correction station, a cover plate insertion station, a cover plate correction station and a cover plate pressing station; a resistance correction mechanism arranged above the resistance correction station to correct the resistance tab after sand filling; a cover plate clamping mechanism 507 arranged at the end of the cover plate vibration moving mechanism 505 and above the cover plate insertion station to insert the clamped cover plate into the tab; a cover plate correction mechanism arranged above the cover plate correction station to correct the position of the cover plate; a cover plate pressing mechanism 512 arranged above the cover plate pressing station to press the cover plate into the shell; a second shell poking mechanism 515 arranged below the second shell moving guide rail 506 to sequentially poke the shells at the beginning of the second shell moving guide rail 506 to the resistance correction station, the cover plate insertion station, the cover plate correction station and the cover plate pressing station, and the second shell poking mechanism 515 comprises a third left-right reciprocating mechanism and a second up-down reciprocating mechanism, the third left-right reciprocating mechanism is connected with the first left-right reciprocating mechanism through a linkage rod to send the shell at the previous station to the next station, and the second up-down reciprocating mechanism is connected with a driving mechanism; a station fixing mechanism arranged beside the second shell moving guide rail 506 to position the shells in each station, and the station fixing mechanism comprises a front fixing part and a rear fixing part, the front fixing part is connected with a third swing rod mechanism, the third swing rod mechanism is connected with a driving mechanism to drive the front fixing part to reciprocate forward and backward, and the rear fixing part is driven by a telescopic assembly.

[0060] The cover plate vibration feeding tray 504 generates directional vibration to orderly arrange the cover plates along the spiral track and output them one by one to the receiving port of the vibration moving mechanism. The vibration moving mechanism forwards the cover plates to the feeding station along the linear guide rail through vibration, and ensures the cover plates to maintain the correct direction and posture through the guide groove during the conveying process. When the cover plate reaches the feeding station, the position signal is detected through the optical fiber sensor and transmitted to the control system 700 to provide preparation for the subsequent cover plate clamping process. The whole feeding process maintains continuous and stable rhythm and is synchronized with the subsequent assembly process.

[0061] The second shell moving guide rail 506 is arranged at the end of the shell clamping moving mechanism, and the second shell moving guide rail 506 is provided with a resistance correction station, a cover plate insertion station, a cover plate correction station and a cover plate pressing-down station. The second shell moving guide rail 506 can be made of hard aluminum alloy profile, the width of the second shell moving guide rail 506 can be adjusted to 15-20 mm, and the surface is oxidized to reduce the friction coefficient. The distance between the stations can be set to 100-300 mm. The resistance correction station is located at the starting end of the guide rail, the cover plate insertion station is located behind it, and the cover plate correction station and the cover plate pressing-down station are arranged in turn behind it. Each station is provided with a positioning device, which can be a positioning block driven by a cylinder, to ensure accurate positioning of the shell during processing.

[0062] The resistance correction mechanism includes a resistance left-right correction mechanism and a resistance front-back correction mechanism 511, and the resistance correction station includes a resistance left-right correction station and a resistance front-back correction station. The resistance left-right correction mechanism and the resistance front-back correction mechanism 511 are respectively arranged corresponding to the resistance left-right correction station and the resistance front-back correction station to correct the positions of the resistance left and right and front and back.

[0063] The resistance left-right correction mechanism includes a first shell fixing mechanism 508, a first lifting mechanism and a first resistance correction mechanism 502. The first shell fixing mechanism 508 includes a first front fixing head and a first rear fixing head. The first front fixing head is in U shape and is connected with the station fixing mechanism. The first rear fixing head is driven by a second cylinder to fix the shell at the resistance left-right correction station when the first front fixing head and the first rear fixing head move towards each other. The first lifting mechanism is arranged on the table top, and the first resistance correction mechanism 502 is arranged on the first lifting mechanism. The first resistance correction mechanism 502 can be a first pneumatic clamp jaw, and the first resistance correction head on the first pneumatic clamp hand is in V shape structure. When the resistance left and right positions need to be corrected, the first lifting structure is lowered, and the resistance correction heads on both sides of the first pneumatic clamp hand move towards each other to correct the resistance left and right directions.

[0064] The resistance front and back correction mechanism 511 comprises a second front resistance correction head and a second back resistance correction head, the second front resistance correction head is arranged on the work station fixing mechanism, the second back resistance correction head is driven by a third cylinder, and the second front resistance correction head and the second back resistance correction head are close to each other to realize the correction of the front and back directions of the resistance.

[0065] The cover plate clamping mechanism 507 is arranged at the end of the cover plate vibration moving mechanism 505, and can comprise a second lifting mechanism, a second pneumatic clamping jaw and a second shell fixing mechanism 503, the second shell fixing mechanism 503 comprises a second front fixing head and a second back fixing head, the second front fixing head is in the shape of U, the second front fixing head is arranged on the work station fixing mechanism, and the second back fixing head is driven by a fourth cylinder or is commonly driven by the third cylinder; when the second front fixing head and the second back fixing head are close to each other, the shell is fixed in the cover plate insertion work station. The pneumatic clamping jaw can be adjusted between 0.5 N and 1 N, and the stroke can be set to 10 mm to 15 mm. The second lifting mechanism drives the lifting of the second pneumatic clamping jaw, so that after the second pneumatic clamping jaw clamps the cover plate, the cover plate can be inserted into the tab of the resistance through the descent of the second lifting mechanism.

[0066] The cover plate correction mechanism comprises a third shell fixing mechanism 509 and a cover plate position correction mechanism 510, the third shell fixing mechanism 509 comprises a third front fixing head and a third back fixing head, the third front fixing head is in the shape of U, the third front fixing head is arranged on the work station fixing mechanism, and the third back fixing head is driven by a fifth cylinder. When the third front fixing head and the third back fixing head are close to each other, the position correction of the front and back directions of the cover plate is realized.

[0067] The cover plate position correction mechanism 510 comprises a third lifting mechanism, a sixth cylinder, a first mounting frame, a first correction plate and a second correction plate. The first mounting frame is arranged on the third lifting mechanism. The upper ends of the first correction plate and the second correction plate are both provided with wedge-shaped inclined surfaces, the bottom ends of the wedge-shaped inclined surfaces are hinged to the first mounting frame, the wedge-shaped inclined surface of the first correction plate is opposite to the wedge-shaped inclined surface of the second correction plate in position, the sixth cylinder is installed above the first mounting frame, the end of the movable part of the sixth cylinder is provided with a wedge-shaped first extrusion head, the upper ends of the first correction plate and the second correction plate are provided with tension springs to make the lower ends of the first correction plate and the second correction plate in an open state, wherein when the first extrusion head moves downward, it extrudes the wedge-shaped inclined surfaces of the first correction plate and the second correction plate, so that the lower ends of the first correction plate and the second correction plate close to each other. The free end of the lower end of the first correction plate is longer than the free end of the lower end of the second correction plate. When the first mounting frame moves downward, the sixth cylinder drives the lower ends of the first correction plate and the second correction plate to close. Because the free end of the first correction plate is longer, the free end of the first correction plate can abut against the side of the shell during the pressing process, so that when the second correction plate presses the cover plate to the shell opening, the cover plate can only move downward along the vertical direction, thereby realizing the position correction of the cover plate.

[0068] The second shell poking mechanism 515 is arranged below the second shell moving guide rail 506, and comprises a third left-right reciprocating mechanism and a second up-down reciprocating mechanism. The second up-down reciprocating mechanism can have the same structure as the first up-down reciprocating mechanism. The third left-right reciprocating mechanism is connected with the first left-right reciprocating mechanism through a linkage rod. The linkage rod can be a stainless steel rod with a diameter of 6 mm, and the length thereof can be adjusted according to the actual installation distance. A joint bearing is arranged at the connection position to ensure the flexibility of movement. The second shell poking mechanism 515 can have the same structure as the first shell poking mechanism.

[0069] During the working process, the second shell poking mechanism 515 moves the first clamping assembly to the shell at the start end of the second shell moving guide rail 506 through the coordinated movement of the third left-right reciprocating mechanism and the second up-down reciprocating mechanism, and then pokes the shell to each work station in sequence. When the shell reaches the resistance correction work station, the resistance correction mechanism moves downward to correct the resistance tab after sand filling. Then, the shell is poked to the cover plate insertion work station, and the cover plate clamping mechanism 507 inserts the cover plate into the tab. Then, the shell moves to the cover plate correction work station, and the cover plate correction mechanism fine-tunes the position of the cover plate. Finally, the shell reaches the cover plate pressing work station, and the cover plate pressing mechanism 512 presses the cover plate into the shell. The whole poking process is accurately matched with the processing time of each work station, so as to ensure the continuous and stable operation of the production line. Through this multi-station coordinated operation mode, the automatic operation of the cover plate assembly process is realized, and the production efficiency and product consistency are improved.

[0070] In another technical solution, the cover plate assembly mechanism further comprises a tab correction mechanism, and the tab correction mechanism comprises: a tab front-rear correction mechanism 514 arranged above the tab front-rear correction work station of the second shell moving guide rail 506 to correct the front-rear position of the tab; a tab left-right correction mechanism 513 arranged above the tab left-right correction work station of the second shell moving guide rail 506 to correct the left-right position of the tab; In this embodiment, the second shell poking mechanism 515 pokes the shell from the cover plate pressing mechanism 512 work station to the tab front-rear correction work station, and the tab front-rear correction mechanism 514 moves downward to correct the front-rear position of the tab. Then, the second shell poking mechanism 515 pokes the shell to the tab left-right correction work station, and the tab left-right correction mechanism 513 corrects the left-right position of the tab. After the tab left-right correction mechanism 513 completes the correction, the second shell poking mechanism 515 pokes out the assembled and corrected product.

[0071] The tab front-rear correction mechanism 514 is arranged above the tab front-rear correction work station of the second shell moving guide rail 506, and is used for correcting the front-rear position of the resistance tab. The tab front-rear correction mechanism 514 comprises a fourth shell fixing mechanism and a tab front-rear position correction mechanism.

[0072] The fourth housing fixing mechanism comprises a fourth front fixing head and a fourth rear fixing head. The fourth front fixing head is arranged on the working position fixing mechanism, and the fourth rear fixing head is driven by the seventh cylinder.

[0073] The tab front and rear position correction mechanism is similar in structure to the resistance front and rear correction mechanism 511.

[0074] The tab left and right correction mechanism 513 comprises a fourth lifting mechanism, an eighth cylinder, a second mounting frame, a third correction plate and a fourth correction plate. The lengths of the free ends of the lower ends of the third correction plate and the fourth correction plate are equal. The structure of the tab left and right position correction mechanism is similar to that of the cover plate position correction mechanism 510, that is, when the eighth cylinder is pressed downward, the lower ends of the third correction plate and the fourth correction plate are close to each other to correct the left and right positions of the tab.

[0075] In another technical solution, a receiving mechanism 600 is further included, and the receiving mechanism 600 comprises: a receiving disc connected with the tab correction mechanism to receive the finished product pressure-sensitive resistor pushed out by the tab correction mechanism; a limiting mechanism comprising a first plate strip, a second plate strip, a pushing cylinder and a lifting cylinder, the first plate strip and the second plate strip being arranged on one side of the receiving disc to define a finished product channel at the side of the receiving disc, the pushing cylinder being connected with the first plate strip, and the lifting cylinder being connected with the second plate strip; a channel photoelectric sensor arranged at the end of the finished product channel; a disc photoelectric sensor arranged on the other side of the receiving disc away from the limiting mechanism; The second housing pushing mechanism 515 pushes the finished product assembled in the tab correction mechanism to the beginning of the finished product channel, the finished product is continuously pushed to the finished product channel, and the finished product gradually moves to the end of the finished product channel. When the channel photoelectric sensor detects that there is a finished product at the end of the finished product channel, the lifting cylinder drives the second plate strip to lift, the pushing cylinder pushes the finished product out of the finished product channel through the first plate strip, and the first plate strip and the second plate strip are reset. This process is repeated until the disc photoelectric sensor detects that there is a finished product on the receiving disc, and the control system 700 sends a disc changing signal.

[0076] The receiving disc can be made of aluminum alloy material, and the size can be designed as 600 mm in length, 400 mm in width and 50 mm in depth. The thickness of the bottom of the receiving disc can be set to 2 mm to 3 mm. The receiving disc is installed at the output end of the tab correction mechanism through a support. The limiting mechanism comprises a first plate strip and a second plate strip. The plate strips can be made of stainless steel material, and the thickness can be selected to be 1.5 mm to 2 mm, and the length matches the width of the receiving disc. The first plate strip and the second plate strip are installed in parallel on one side of the receiving disc, and the spacing can be adjusted to 30 mm to 40 mm to form a side wall limitation of the finished product channel.

[0077] The push cylinder can be a small double-acting cylinder with a cylinder diameter of 16 mm, a stroke of 20-30 mm, and a working pressure of 0.4-0.6 MPa. The lifting cylinder can be a compact cylinder with a cylinder diameter of 12 mm and a stroke of 15-25 mm. The push cylinder is fixed to the outer side of the first plate through a mounting bracket, and the piston rod is connected to the first plate. The lifting cylinder is installed below the second plate and connected to the second plate through a connecting rod mechanism. These components are installed on the side of the receiving disc through bolt connection, ensuring the stability and reliability of the mechanism operation.

[0078] The channel photoelectric sensor and the disc photoelectric sensor form a detection system. The channel photoelectric sensor can be a reflection type photoelectric sensor with a detection distance of 100-150 mm and a response time of not more than 1 ms. The sensor is installed at the end of the finished product channel through a bracket, with the transmitter and receiver installed on both sides of the channel at a height of 10-15 mm from the bottom of the receiving disc. The disc photoelectric sensor can be a diffuse reflection type sensor with a detection distance of 200-300 mm. The sensor is installed on the other side of the receiving disc away from the limiting mechanism through a bracket, with a height of 20-30 mm from the disc bottom and a detection angle of 15-20 degrees.

[0079] The sensors are connected to the digital input module of the control system 700, with a sampling period of 10 ms. The system is also equipped with indicator lights to display the sensor working state, with green indicating normal detection and red indicating abnormal state. These sensors can be firmly installed through brackets to ensure stable detection performance in a vibrating environment.

[0080] The working process of the receiving mechanism 600 is as follows: the second housing poking mechanism 515 pokes the finished product assembled in the tab correcting mechanism to the beginning of the finished product channel. The last finished product is squeezed by the next finished product and enters the finished product channel defined by the first plate and the second plate. The finished products are arranged in sequence in the channel, and gradually move to the end of the channel as subsequent finished products continuously enter. When the channel photoelectric sensor detects finished products at the end of the finished product channel, it sends a signal to the control system 700.

[0081] The control system 700 first controls the lifting cylinder to act, drives the second slat to lift up 15-20 mm to form the discharge port. Then the push cylinder acts to push the first slat to push the finished product out of the end of the channel. The push stroke can be set to 25-35 mm, and the push time can be controlled within 1-2 seconds. After the push action is completed, the push cylinder retreats, the lifting cylinder descends, and the first slat and the second slat reset. This cycle continues until the photocell sensor detects that the other side of the receiving tray also has finished products, and the control system 700 sends a tray change signal to prompt the operator to replace the empty receiving tray. The entire receiving process realizes the automatic collection and arrangement of finished products, reduces manual intervention, and improves production efficiency.

[0082] The receiving mechanism 600 can realize the automatic sorting and collection of finished products, and improve the automation degree of the production line. Through the cooperation of photoelectric sensor detection and cylinder pushing, the orderly discharge of finished products is realized. The mechanism structure is simple and reliable, easy to maintain, and can adapt to the needs of continuous production. The design of the finished product channel avoids the accumulation and collision of finished products, ensuring the integrity of the products. The timely prompt of the tray change signal ensures the continuity of the production process and reduces the downtime.

[0083] In another technical solution, the driving mechanism includes a driving motor, a first rotating shaft and a second rotating shaft, the driving motor, the first rotating shaft and the second rotating shaft are arranged below the table top, the first rotating shaft and the second rotating shaft are arranged in parallel, the first rotating shaft is arranged at the front end of the supporting mechanism 800, the second rotating shaft is arranged at the rear end, the second rotating shaft is connected with the first rotating shaft through a belt, and the first rotating shaft is connected with the driving motor through a belt. The first driving wheel can be arranged on the first rotating shaft, and the reciprocating driving wheel can be arranged on the second rotating shaft. The second driving wheel is arranged at the end of the second rotating shaft and is connected through a worm gear. The swing driving wheel can be arranged on the first rotating shaft or the second rotating shaft.

[0084] Although the embodiments of the present application have been disclosed as above, they are not limited to the applications listed in the specification and embodiments, and can be fully applied to various fields suitable for the present application, and additional modifications can be easily realized by those skilled in the art, and therefore the present application is not limited to specific details and the figures shown and described herein, without departing from the general concept defined by the claims and the equivalent scope.

Claims

1. A varistor assembly device, characterized in that: The invention comprises a shell feeding mechanism, a resistor feeding mechanism, a cover plate feeding mechanism, a material insertion mechanism, a sand filling mechanism, a cover plate assembly mechanism, a driving mechanism, a supporting mechanism and a control system. The supporting mechanism is used to support the shell feeding mechanism, the resistor feeding mechanism, the material insertion mechanism, the sand filling mechanism, the cover plate feeding mechanism, the cover plate assembly mechanism and the driving mechanism. The driving mechanism is connected with the material insertion mechanism, the sand filling mechanism and the cover plate assembly mechanism to drive the shell to move between the working positions in the material insertion mechanism, the sand filling mechanism and the cover plate assembly mechanism. The control system is electrically connected with the shell feeding mechanism, the resistor feeding mechanism, the cover plate feeding mechanism, the material insertion mechanism, the sand filling mechanism, the cover plate assembly mechanism and the driving mechanism to coordinate the actions of each mechanism. Among them, the shell feeding mechanism delivers the shells one by one to the inserting mechanism; The resistor feeding mechanism delivers resistors one by one to the inserting mechanism; The cover plate feeding mechanism delivers the cover plates one by one to the cover plate assembling mechanism; The inserting mechanism receives the shell and the resistor, inserts the received resistor into the shell, and then transports it to the sand filling mechanism; The sand filling mechanism fills the shell with sand, and then transports it to the cover assembly mechanism; The cover assembly mechanism sequentially completes the position correction of the resistor tab, cover insertion, and cover pressing operations, thereby completing the assembly of the resistor and the shell to obtain a finished varistor.

2. The varistor assembly device according to claim 1, wherein: The shell feeding mechanism includes a shell vibrating moving mechanism and a shell vibrating feeding tray. The shells output one by one from the shell vibrating feeding tray are transported to the next process through the shell vibrating moving mechanism.

3. The varistor assembly device according to claim 1, wherein: The resistance feeding mechanism includes: Resistance vibration feed tray; A resistor vibration moving mechanism is connected to the resistor vibration feeding tray to transport the resistors output one by one from the resistor vibration feeding tray forward to the feeding station; The resistor pushing mechanism includes a resistor pushing rod and a resistor positioning rod. The resistor pushing rod is arranged on the side of the resistor vibration moving mechanism to push the resistor out of the feeding station. The resistor positioning rod is arranged above the resistor vibration moving mechanism to squeeze and position the resistor next to the feeding station. The first resistor clamping mechanism is arranged beside the feeding station and opposite to the resistor pushing rod; Among them, the control system controls the resistor positioning rod to move downward, squeezes and positions the resistor next to the feeding station, and the resistor pushing rod pushes the resistor on the feeding station so that the first resistor clamping mechanism can clamp the resistor to the next process.

4. The varistor assembly device according to claim 1, wherein: Insertion mechanism includes: A second resistor clamping mechanism, which is located opposite to the first resistor clamping mechanism to receive the resistor transferred by the first resistor clamping mechanism; a first housing moving guide rail, which is located at an end of the housing vibration moving mechanism and is positioned higher than the housing vibration moving mechanism; a housing lifting mechanism, which is located below the end of the housing vibration moving mechanism to lift the housing at the end of the housing vibration moving mechanism upward; The right shell lifting mechanism is arranged at the starting end of the first shell moving guide rail to push the shell lifted by the shell upper lifting mechanism into the first shell moving guide rail; A first housing toggle mechanism is provided below the first housing moving guide rail and is driven by the driving mechanism to toggle the housing to move in the first housing moving guide rail; The first housing clamping mechanism includes a first clamping plate and a first cylinder. The first clamping plate is arranged on the first housing moving guide rail and is located opposite to the second resistor clamping mechanism. The first cylinder drives the first clamping plate to reciprocate. Among them, when the first shell moving mechanism moves the shell to the insertion station on the first shell moving guide rail, the first cylinder drives the first clamping plate to extend forward to fix the shell, and the second resistor clamping mechanism inserts the clamped resistor into the shell of the insertion station below it.

5. The varistor assembly device according to claim 4, characterized in that: The first housing toggle mechanism includes a first up-and-down reciprocating mechanism and a first left-and-right reciprocating mechanism, wherein the first up-and-down reciprocating mechanism includes: A positioning cylinder is provided on the table of the supporting mechanism and passes through the table; A first U-shaped rod, a free end of which slidably passes through the positioning cylinder from below the table top to above the table top, and a guide rod is provided at the opening of the first U-shaped rod; a first connecting rod, which is a Z-shaped rod, one end of which is hinged to the bottom of the first U-shaped rod, and the other end of which is hinged to the bottom of the table, and a roller is provided on the first connecting rod; A first driving wheel is provided on the driving shaft of the driving mechanism and is located below the table top. A first guide groove is provided on the side of the first driving wheel, and the roller is in rolling engagement with the first guide groove. When the driving mechanism drives the first driving wheel to rotate, the first connecting rod drives the first U-shaped rod to swing back and forth; The first left-right reciprocating mechanism includes: The second U-shaped rod is arranged below the movable guide rail of the first housing, and an elongated through hole is provided on the table top. The free end of the second U-shaped rod extends upward to above the table top. A clamping groove is provided on the side of the second U-shaped rod, and a limiting groove is provided below the table top. A limiting block is provided on the second U-shaped rod, and the limiting block is slidably engaged with the limiting groove; The first toggle assembly includes an inverted L-shaped connecting rod, a toggle rod, a tension spring and a plurality of toggle teeth. A clamping block is provided on the front side of the vertical portion of the inverted L-shaped connecting rod, and the clamping block is slidably engaged with the clamping groove. A support wheel is provided on the rear side of the vertical portion of the inverted L-shaped connecting rod, and the support wheel is supported above the guide rail rod. The toggle rod is provided on the horizontal portion of the inverted L-shaped connecting rod. A plurality of toggle teeth are provided on the toggle rod at equal intervals. One end of the tension spring is connected to the inverted L-shaped connecting rod, and the other end is connected to the bottom of the second U-shaped rod so that the support wheel always abuts against the guide rail rod. a second connecting rod, one end of which is hinged to the bottom of the second U-shaped rod; a second driving wheel connected to the driving mechanism, and a second connecting rod is hingedly connected to the second driving wheel; When the second driving wheel rotates, the second U-shaped rod is driven to reciprocate left and right through the second connecting rod to drive the shifting gear to reciprocate left and right; The first up-and-down reciprocating mechanism drives the inverted L-shaped connecting rod to reciprocate up and down in the clamping groove to realize the up-and-down reciprocating movement of the toggle tooth; when the toggle tooth moves upward, the toggle tooth abuts against the left side of the housing, and the toggle housing moves on the first housing moving guide rail to realize the housing position transfer on the first housing moving guide rail; When the toggle gear moves downward, the toggle gear is separated from the housing, and the toggle gear moves leftward under the drive of the second driving wheel, so as to prepare for the next toggle of the housing to the right, and this is repeated to continuously toggle the housing onto the first housing moving guide rail.

6. The varistor assembly device according to claim 4, characterized in that: Sand filling mechanism includes: an intermediate rack, which is arranged in the middle of the table top; The shell clamping and moving mechanism includes a first clamping assembly and a second clamping assembly, the first clamping assembly includes a plurality of first clamping rods, a second left and right reciprocating mechanism, a first clamping frame and a first swing mechanism, the plurality of first clamping rods are arranged on the first clamping frame at equal intervals, the first clamping frame is slidably arranged on the second left and right reciprocating mechanism, the second left and right reciprocating mechanism is connected to the driving mechanism to drive the first clamping rod to reciprocate left and right through the driving mechanism, the first clamping frame is provided with a sliding groove, the first swing mechanism is provided with a sliding block, the sliding block slidably cooperates with the sliding groove, and the second swing mechanism is connected to the driving mechanism; the second clamping assembly is arranged below the first clamping assembly, the second clamping assembly is slidably arranged on both sides of the intermediate frame, the second clamping assembly includes a plurality of second clamping rods arranged at equal intervals, the second clamping rods are driven by the second swing rod mechanism to enable the second clamping rods in relative position to clamp, fix or release the shell; A sand feeding mechanism is provided above the shell clamping and moving mechanism to fill the shell with sand when the shell clamping and moving mechanism moves to the sand filling station; Among them, the first clamping assembly and the second clamping assembly cooperate alternately to realize the movement of the shell to the right one by one. Specifically, when the second left and right reciprocating mechanism drives the first clamping assembly to move to the left to the end of the first shell moving guide rail, the first swinging mechanism drives the first clamping assembly to clamp the shell equipped with resistors, and the second left and right reciprocating mechanism drives the first clamping assembly to move one station to the right. At this time, the second clamping assembly clamps and fixes the shell, and the first clamping assembly releases the shell to complete the movement of the shell by one station. When the shell moves to the sand filling station, the first clamping assembly is released, and the second clamping assembly is tightened and fixed while the sand filling mechanism fills sand into the shell below it.

7. The varistor assembly device according to claim 6, characterized in that: A resistance photoelectric detector is provided at the end of the first shell moving guide rail. When the resistance photoelectric detector detects that there is no resistance in the shell, the first clamping assembly will loosen the shell entering the sand filling station to make it fall from the shell clamping and moving mechanism. Specifically, the first clamping rod opposite to the sand filling station is a hollow structure, and a shell screening cylinder is installed inside. When the resistance photoelectric detector detects that there is no resistance in the shell, the shell screening cylinder contracts during the process of the first clamping rod clamping it to the sand filling station, and the shell loses its clamping force and falls.

8. The varistor assembly device according to claim 1, wherein: The cover plate assembly mechanism includes: Cover plate vibration feed tray; A cover plate vibrating moving mechanism, which is connected to the cover plate vibrating feeding tray to output the cover plates piece by piece for the next process; A second housing moving guide rail is provided at the end of the housing clamping and moving mechanism, and a resistance calibration station, a cover plate inserting station, a cover plate calibration station and a cover plate pressing station are provided on the second housing moving guide rail; The resistance correction mechanism is arranged above the resistance correction station to correct the resistor tabs after sand filling; A cover plate clamping mechanism is provided at the end of the cover plate vibrating movement mechanism and is located above the cover plate inserting station to insert the clamped cover plate into the tab; A cover plate correction mechanism is provided above the cover plate correction station to correct the position of the cover plate; a cover plate pressing mechanism, which is arranged above the cover plate pressing station to press the cover plate into the housing; A second housing toggle mechanism is provided below the second housing moving guide rail to sequentially move the housing that has been transported by the first clamping assembly to the starting end of the second housing moving guide rail to the resistance calibration station, the cover insertion station, the cover calibration station, and the cover pressing station. The second housing toggle mechanism includes a third left-right reciprocating mechanism and a second up-down reciprocating mechanism. The third left-right reciprocating mechanism is connected to the first left-right reciprocating mechanism via a linkage rod to move the housing from the previous station to the next station. The second up-down reciprocating mechanism is connected to the driving mechanism. The workstation fixing mechanism is arranged next to the second shell moving guide rail to position the shell in each workstation. The workstation fixing mechanism includes a front fixing part and a rear fixing part. The front fixing part is connected to the third swing arm mechanism. The third swing arm mechanism is connected to the driving mechanism to drive the front fixing part to reciprocate back and forth. The rear fixing part is driven by the telescopic assembly.

9. The varistor assembly device according to claim 8, characterized in that: The cover plate assembly mechanism further includes a tab correction mechanism, which includes: A tab front-to-back correction mechanism is provided above the tab front-to-back correction station of the second housing movable guide rail to correct the tab front-to-back; The tab left-right correction mechanism is arranged above the tab left-right correction station of the second housing moving guide rail to correct the tab left-right; Among them, the second shell toggle mechanism moves the shell from the cover plate pressing mechanism station to the tab for front and back correction, and the tab front and back correction mechanism moves down to correct the tab's front and back position; the second shell toggle mechanism then moves the shell forward to the tab left and right correction station, and the tab left and right correction mechanism performs left and right position extrusion correction on the tab. After the tab left and right correction mechanism completes the correction, the second shell toggle mechanism pulls out the assembled and corrected finished product.

10. The varistor assembly device according to claim 9, characterized in that: Also included is a receiving mechanism, the receiving mechanism comprising: A receiving plate connected to the tab correction mechanism to receive the finished varistor pushed forward by the tab correction mechanism; The limiting mechanism includes a first slat, a second slat, a pushing cylinder, and a lifting cylinder. The first slat and the second slat are arranged on one side of the receiving tray to define a finished product channel on the side of the receiving tray. The pushing cylinder is connected to the first slat, and the lifting cylinder is connected to the second slat. Channel photoelectric sensor, which is set at the end of the finished product channel; A disk photoelectric sensor is arranged on the other side of the receiving disk away from the limiting mechanism; Among them, the second shell toggle mechanism pushes the finished product assembled in the tab correction mechanism to the starting end of the finished product channel, and the finished product is continuously pushed to the finished product channel, and the finished product gradually moves to the end of the finished product channel. When the channel photoelectric sensor detects that there is a finished product at the end of the finished product channel, the lifting cylinder drives the second slat to lift, and pushes the cylinder to push the finished product out of the finished product channel through the first slat, and the first slat and the second slat are reset, and this cycle repeats until the photoelectric sensor on the disk detects that there is a finished product on the receiving disk, and the control system sends a disk change signal.

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