Powder forming machine for piezoresistor chip production

Abstract

The utility model relates to a powder forming machine for piezoresistor chip production, which comprises a workbench and a rack, an electric telescopic device is arranged in the rack, and the bottom end of the electric telescopic device is a telescopic end and is provided with a material pressing device; a positioning groove is formed in the top face of the workbench, the front face side of the positioning groove is flush with the front face side of the workbench, a forming die is detachably connected into the positioning groove in a sliding mode, the forming die is matched with the interior of the positioning groove, a U-shaped material blocking plate is installed on the top face of the forming die, and a plurality of forming through holes are formed in the portion, located in the material blocking plate, of the forming die. A thin plate is further installed on the bottom face of the forming die, a scraping plate is arranged at the position of a U-shaped opening of the striker plate, and the two ends of the scraping plate are detachably connected with the two ends of the striker plate through connecting assemblies. The material pressing device comprises a bearing plate connected with the electric telescopic device, a plurality of material pressing rods are installed on the bottom face of the bearing plate, and powder scattered on the forming die can be conveniently cleaned.

Description

Technical Field

[0001] The utility model belongs to the technical field of resistor production equipment, in particular to a powder forming machine for producing varistor chips. Background Art

[0002] At present, when producing varistor chips, the required raw materials are usually ground into powder first, and then the powder is pressed by a powder molding machine, so that a semi-finished resistor chip can be formed after the powder is molded; and the existing powder molding machines used for the production of varistor chips, when in use, mostly add powder into several molding holes on a molding die, and then the powder is pressed by a pressing device, but in the above method, in the process of adding powder from the top of the molding hole into the molding hole, the powder will spill on the molding die, and in the prior art, it is not convenient to clean the powder spilled on the molding die; in addition, after the powder is pressed and molded, it is not convenient to take the semi-finished resistor chip out of the molding hole, so there are still shortcomings and deficiencies in the prior art. Utility Model Content

[0003] The purpose of the utility model is to provide a powder forming machine for producing varistor chips to solve the problems raised in the above background technology.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is:

[0005] A powder forming machine for producing varistor chips, comprising a workbench, a vertically distributed frame is installed on the top surface of the workbench, a vertically distributed electric telescopic device is installed in the frame, the bottom end of the electric telescopic device is a telescopic end and is installed with a material pressing device; a positioning groove is opened on the top surface of the workbench, the front side of the positioning groove is flush with the front side of the workbench, and a forming mold relative to the position of the material pressing device is detachably slidably connected in the positioning groove, the forming mold is adapted to the positioning groove, and a U-shaped stopper with a horizontal cross section is installed on the top surface of the forming mold A material plate, and a forming mold located in the baffle plate is vertically provided with a plurality of forming through holes distributed in a rectangular array, and a thin plate for sealing the forming through holes is also installed on the bottom surface of the forming mold, and a scraper plate which is vertically distributed and can slide in the baffle plate is arranged at the U-shaped opening position of the baffle plate, and both ends of the scraper plate and the two ends of the baffle plate are detachably connected through a connecting assembly; the pressing device includes a supporting plate which is horizontally distributed and connected to the electric telescopic device, and a plurality of pressing rods which are equal to the number of the forming through holes and are opposite to each other are vertically installed on the bottom surface of the supporting plate.

[0006] Furthermore, a mounting through hole connected to the positioning groove is horizontally opened on one side of the workbench, and a tightening device is installed in the mounting through hole. The tightening device includes a first electric telescopic rod installed in the mounting through hole, and the end of the first electric telescopic rod close to the positioning groove is a telescopic end, and the telescopic end of the first electric telescopic rod is installed with a tightening plate that can slide in the mounting through hole.

[0007] Furthermore, it also includes a controller, which is electrically connected to the first electric telescopic rod and the electric telescopic device respectively, and a pressure sensor connected to the controller signal is installed on the side of the tightening plate away from the first electric telescopic rod.

[0008] Furthermore, the electric telescopic device includes at least two second electric telescopic rods that are vertically opposite to each other and can be telescopically extended synchronously, the top ends of the second electric telescopic rods are connected to the frame, and the bottom ends of the second electric telescopic rods are telescopic ends and connected to the bearing plate.

[0009] Furthermore, horizontally distributed sliding grooves are provided on two oppositely arranged inner walls of the baffle plate, and both ends of the scraper plate are fixedly connected with sliding blocks slidably connected to the sliding grooves. The connecting components include magnets, which are respectively embedded in one end of the U-shaped opening position of the sliding groove close to the baffle plate, and the sliding blocks are installed with metal plates that can be adsorbed by the magnets.

[0010] Furthermore, a handle is installed on the front side of the molding die.

[0011] By adopting the above technical solution, the beneficial effects of the utility model are:

[0012] Before the utility model is used, the forming mold needs to be taken out from the workbench first, and the scraper plate is located at a side of the U-shaped opening position away from the baffle plate, and then when the powder is added into the forming through hole by using the existing feeding device, a recovery box can be arranged below the U-shaped opening position of the baffle plate, and at this time, the powder spilled on the forming mold can be easily cleaned by sliding the scraper plate to avoid waste; secondly, after the powder is pressed and formed, the forming mold is also taken out from the workbench first, and then the forming mold is turned upside down, and since a thin plate is arranged on the bottom surface of the forming mold, at this time, the thin plate can be knocked out under the action of external force, so that the semi-finished product of the resistor chip in the forming through hole can be knocked out, so that the semi-finished product of the resistor chip can be easily taken out from the forming through hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 for Figure 1 A schematic diagram of the structure with a partial enlargement at the center;

[0015] Figure 3 for Figure 1 A schematic diagram of the three-dimensional structure of the middle part of the device;

[0016] Figure 4 for Figure 3 Schematic diagram of the structure in the split state.

[0017] Figure numerals: 1. frame; 2. pressing device; 21. bearing plate; 22. pressing rod; 3. electric telescopic device; 31. second electric telescopic rod; 4. molding die; 41. molding through hole; 5. workbench; 51. mounting through hole; 6. tightening device; 61. first electric telescopic rod; 62. tightening plate; 7. scraper plate; 71. slider; 8. baffle plate; 81. slide groove; 9. connecting assembly; 91. magnet; 10. thin plate; 11. pressure sensor; 12. handle. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the implementation mode of the present invention is further described in detail below with reference to the accompanying drawings.

[0019] like Figures 1 to 4 As shown, the utility model provides a powder forming machine for producing varistor chips, including a workbench 5, a vertically distributed frame 1 is installed on the top surface of the workbench 5, a vertically distributed electric telescopic device 3 is installed in the frame 1, the bottom end of the electric telescopic device 3 is a telescopic end and is installed with a pressing device 2, specifically, in the initial state, the telescopic end of the electric telescopic device 3 is in a retracted state, and when the telescopic end of the electric telescopic device 3 is in the process of telescoping, it can drive the pressing device 2 to rise and fall; a positioning groove is opened on the top surface of the workbench 5, the front side of the positioning groove is flush with the front side of the workbench 5, and a forming mold 4 opposite to the position of the pressing device 2 is detachably and slidably connected in the positioning groove, specifically, when in use, the position of the forming mold 4 can be slid by pushing and pulling the forming mold 4, and the forming mold 4 can be taken out from the workbench 5; the forming mold 4 is adapted to the positioning groove, that is, after the forming mold 4 is installed in the positioning groove, the forming mold 4 is just opposite to the position of the pressing device 2.

[0020] A baffle plate 8 with a U-shaped horizontal cross section is installed on the top surface of the forming mold 4, and a plurality of forming through holes 41 distributed in a rectangular array are vertically opened on the forming mold 4 located in the baffle plate 8. A thin plate 10 for sealing the forming through holes 41 is also installed on the bottom surface of the forming mold 4, and the thin plate 10 can vibrate under the action of external force; a scraper plate 7 vertically distributed and slidable in the baffle plate 8 is provided at the U-shaped opening position of the baffle plate 8, and both ends of the scraper plate 7 are detachably connected to the two ends of the baffle plate 8 through a connecting component 9. Specifically, when the scraper plate 7 is located at the U-shaped opening position of the baffle plate 8, the scraper plate 7 and the baffle plate 8 are connected. The two parts can be connected by a connecting component 9. At this time, the outer wall of the scraper plate 7 is flush with the outer surface of the forming mold 4. Before use, after the forming mold 4 is taken out from the workbench 5, the scraper plate 7 can be slid to the side of the U-shaped opening position away from the baffle plate 8. Then, after the powder is added into the forming through hole 41 by using the existing feeding device, a recovery box can be set below the U-shaped opening position of the baffle plate 8. At this time, by sliding the scraper plate 7, it is convenient to clean the powder spilled on the forming mold 4 to avoid waste. In addition, when in use, a layer of sponge pad can be bonded to the bottom surface of the scraper plate 7 to facilitate cleaning of the powder.

[0021] Secondly, when the feeding is completed, after the forming mold 4 is installed in the positioning groove, the powder in the forming through hole 41 can be pressed by the pressing device 2, and the specific structure of the pressing device 2 is as follows: the pressing device 2 includes a horizontally distributed supporting plate 21 connected to the electric telescopic device 3, and a plurality of pressing rods 22 are vertically installed on the bottom surface of the supporting plate 21, the number of which is equal to the number of the forming through holes 41 and the position is opposite. Specifically, the rod diameter of the pressing rod 22 is adapted to the aperture diameter of the forming through hole 41. When in use, when the telescopic end of the electric telescopic device 3 is in the process of extending, The pressing rod 22 can be driven to enter the molding through hole 41 to press the powder in the molding through hole 41. Then, after the powder is pressed and formed, the molding die 4 is first taken out from the workbench 5, and then the molding die 4 is turned upside down. Since a thin plate 10 is provided on the bottom surface of the molding die 4, at this time, the thin plate 10 can be knocked out under the action of external force to knock out the semi-finished product of the resistor chip in the molding through hole 41, so that the semi-finished product of the resistor chip can be easily taken out from the molding through hole 41; in addition, the number of molding dies 4 can be set to multiple to ensure production efficiency.

[0022] When the pressing device 2 is pressing the powder, in order to prevent the position of the forming die 4 from moving, Figure 1 and Figure 2As shown, a mounting through hole 51 communicating with the positioning groove is horizontally opened on one side of the workbench 5, and a tightening device 6 is installed in the mounting through hole 51. The tightening device 6 includes a first electric telescopic rod 61 installed in the mounting through hole 51, and the end of the first electric telescopic rod 61 close to the positioning groove is a telescopic end, and the telescopic end of the first electric telescopic rod 61 is installed with a tightening plate 62 that can slide in the mounting through hole 51. Specifically, in the initial state, the telescopic end of the first electric telescopic rod 61 is in a retracted state. Then, after the forming mold 4 is installed in the positioning groove, the first electric telescopic rod 61 can drive the tightening plate 62 to tighten the forming mold 4 to fix the position of the forming mold 4. In this way, when the pressing device 2 is in the process of pressing the powder, the position of the forming mold 4 can be prevented from moving.

[0023] Furthermore, it also includes a controller, which is electrically connected to the first electric telescopic rod 61 and the electric telescopic device 3 respectively. Specifically, the controller is a PLC controller in the prior art. When in use, the controller can control the movement of the first electric telescopic rod 61 and the electric telescopic device 3 respectively; in addition, a pressure sensor 11 connected to the controller signal is installed on the side of the clamping plate 62 away from the first electric telescopic rod 61. Specifically, the pressure sensor 11 is of the prior art. When in use, when the clamping plate 62 clamps the forming mold 4, the pressure sensor 11 can transmit the clamping signal to the controller, and then the controller can control the electric telescopic device 3 to drive the pressing device 2 to operate, so as to press the powder in the forming through hole 41.

[0024] The specific structure of the electric telescopic device 3 is as follows: Figure 1 As shown, the electric telescopic device 3 includes at least two second electric telescopic rods 31 that are vertically oppositely distributed and can be synchronously telescopic. The top ends of the second electric telescopic rods 31 are connected to the frame 1, and the bottom ends of the second electric telescopic rods 31 are telescopic ends and connected to the bearing plate 21. Specifically, the number of the second electric telescopic rods 31 is set to at least two, so that when the electric telescopic device 3 drives the pressing device 2 to rise and fall, the stability of the pressing device 2 during the lifting process can be guaranteed.

[0025] The specific manner in which the scraper plate 7 can slide in the baffle plate 8 is as follows: Figure 3 and Figure 4 As shown, horizontally distributed slide grooves 81 are provided on the two oppositely arranged inner walls of the baffle plate 8. Specifically, the slide groove 81 is located at the top position of the baffle plate 8, so that when adding powder to the forming through hole 41, a large amount of powder can be prevented from entering the slide groove 81; both ends of the scraper plate 7 are fixedly connected with sliders 71 slidably connected to the slide groove 81. Specifically, the sliders 71 are respectively located in the slide groove 81 and are slidably connected to the baffle plate 8 through the slide groove 81, so that the scraper plate 7 can be slid in the baffle plate 8; the specific structure of the connecting component 9 is as follows: Figure 4As shown, the connecting components 9 include magnets 91, which are respectively embedded in one end of the U-shaped opening position of the slide groove 81 close to the baffle plate 8, and the slider 71 is installed with a metal plate that can be adsorbed by the magnet 91. Specifically, there is a certain distance between the two slide grooves 81 and the U-shaped ends of the baffle plate 8, and the magnets 91 are respectively embedded in the end faces of the slide grooves 81. Then, when in use, when the scraper plate 7 is located at the U-shaped opening position of the baffle plate 8, the magnet 91 can adsorb the metal plate, so that the scraper plate 7 and the baffle plate 8 can be connected; and under the action of external force, after the metal plate is separated from the magnet 91, the scraper plate 7 can be slid.

[0026] Further, such as Figure 1 , Figure 3 and Figure 4 As shown, a handle 12 is installed on the front side of the forming mold 4, and the handle 12 can facilitate pushing and pulling the forming mold 4.

[0027] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A powder forming machine for producing varistor chips, comprising a workbench, on the top surface of which a vertically distributed rack is installed, characterized in that: The cam is provided with a plurality of camshafts, each of which ...

2. A powder forming machine for producing varistor chips according to claim 1, characterized in that: A mounting through hole connected to the positioning groove is horizontally opened on one side of the workbench, and a tightening device is installed in the mounting through hole. The tightening device includes a first electric telescopic rod installed in the mounting through hole, and the end of the first electric telescopic rod close to the positioning groove is a telescopic end, and the telescopic end of the first electric telescopic rod is installed with a tightening plate that can slide in the mounting through hole.

3. A powder forming machine for producing varistor chips according to claim 2, characterized in that: It also includes a controller, which is electrically connected to the first electric telescopic rod and the electric telescopic device respectively. A pressure sensor connected to the controller signal is installed on the side of the tightening plate away from the first electric telescopic rod.

4. The powder forming machine for producing varistor chips according to claim 1, characterized in that: The electric telescopic device includes at least two second electric telescopic rods that are vertically oppositely distributed and can be telescopically extended synchronously, the top ends of the second electric telescopic rods are connected to the frame, and the bottom ends of the second electric telescopic rods are telescopic ends and connected to the bearing plate.

5. The powder forming machine for producing varistor chips according to claim 1, characterized in that: The two oppositely arranged inner walls of the baffle plate are provided with horizontally distributed sliding grooves, and both ends of the scraper plate are fixedly connected with sliders slidably connected to the sliding grooves. The connecting components include magnets, which are respectively embedded in one end of the U-shaped opening position of the sliding groove close to the baffle plate, and the sliders are installed with metal plates that can be adsorbed by the magnets.

6. The powder forming machine for producing varistor chips according to claim 1, characterized in that: A handle is installed on the front side of the molding die.

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