CN215998663U - Mould preheating device is used in production of round parts for tooth case - Google Patents

Abstract

The utility model discloses a mold preheating device for producing circular accessories for tooth boxes; belongs to the technical field of casting equipment; the technical key points of the device comprise a chain plate conveyor, wherein a preheating insulation box is arranged at the top of the chain plate conveyor, and a mounting plate is connected in the preheating insulation box through a lifting driving mechanism; the bottom of the mounting plate is provided with a plurality of preheating upper covers, and a plurality of vertical heating rods are arranged in the preheating upper covers; a plurality of groups of preheating lower covers are arranged on a chain plate of the chain plate conveyor at intervals, and the number of the preheating lower covers in each group is the same as that of the preheating upper covers at the bottom of the mounting plate; a heat-insulation feeding bin is arranged on the feeding side of the preheating heat-insulation box, a heat-insulation discharging bin is arranged on the discharging side of the preheating heat-insulation box, and the distance between the inner tops of the heat-insulation feeding bin and the heat-insulation discharging bin and the top of the preheating lower cover is 3-5 mm; a die clamping mechanism is arranged in the preheating lower cover; a sealing mechanism is arranged between the preheating upper cover and the preheating lower cover; the utility model aims at providing a rational in infrastructure and preheat effectual mould preheating device is used in production of circular fitting for tooth case.

Description

Mould preheating device is used in production of round parts for tooth case

Technical Field

The utility model relates to a mould preheating device, more specifically say, especially relate to a mould preheating device is used in production of circular fitting for tooth case.

Background

The gear box mainly comprises a motor shell, a driving disc, a bearing, a floating oil seal, a pump shaft, a gear ring, a gear, a star frame, a pin shaft and an end cover. Can process the part of needs through the casting mould, mainly be through the form of pouring, but if when the casting, the casting mould is inside colder, can cause molten iron rapid cooling, leads to cast part quality not good easily to need preheat the casting mould.

Present mould preheating device has certain drawback when using, at first, general preheating device can only singly preheat one to one casting mould, it is lower to preheat work efficiency, and the process of preheating leads to the heat loss on the preheating device easily, thereby cause its waste, certain adverse effect has, secondly, be not convenient for assemble preheating device and casting mould, it is comparatively troublesome to install, certain adverse effect has, certain influence has been brought to the use of giving people, lead to production efficiency to be lower.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to the not enough of above-mentioned prior art, provide a rational in infrastructure, convenient to use and preheat effectual mould preheating device is used in production of circular fitting for tooth case.

The technical scheme of the utility model is realized like this: a mold preheating device for producing circular accessories for tooth boxes comprises a chain plate conveyor, wherein a preheating insulation box matched with the chain plate conveyor is arranged at the top of the chain plate conveyor, a mounting plate is horizontally arranged in the preheating insulation box, and a lifting driving mechanism connected with the mounting plate is arranged at the top of the preheating insulation box; a plurality of preheating upper covers are arranged at the bottom of the mounting plate at intervals along the conveying direction of the chain scraper conveyor, and a plurality of vertical heating rods matched with the die are arranged in the preheating upper covers at intervals along the circumferential direction.

A plurality of groups of preheating lower covers matched with the preheating upper covers are arranged on chain plates of the chain plate conveyor at intervals, and the number of the preheating lower covers in each group is the same as that of the preheating upper covers at the bottom of the mounting plate; the preheating insulation box is provided with a heat insulation feeding bin at one side of feeding along the conveying direction of the chain scraper conveyor, and a heat insulation discharging bin is arranged on the preheating insulation box at the other side of the heat insulation feeding bin.

When one group of the preheating lower covers enters the preheating insulation box and is closed with the preheating upper cover for heating, the rear group of the preheating lower covers at the feeding side along the conveying direction are positioned in the insulation feeding bin, and the front group of the preheating lower covers at the discharging side along the conveying direction are positioned in the insulation discharging bin; the distance between the inner top of the heat-insulation feeding bin and the heat-insulation discharging bin and the top of the preheating lower cover is 3-5 mm.

A clamping mechanism for clamping and fixing the die is arranged in the preheating lower cover; and a sealing mechanism for assisting the preheating of the die is arranged between the preheating upper cover and the preheating lower cover.

In the mold preheating device for producing the circular fittings for the tooth boxes, the lifting driving mechanism comprises a lifting oil cylinder vertically arranged at the top of the preheating and heat-insulating box, the free end of a piston rod of the lifting oil cylinder extends into the preheating and heat-insulating box and is connected with the mounting plate, and guide rods connected with the mounting plate are vertically arranged on the preheating and heat-insulating boxes on the two sides of the lifting oil cylinder.

In the mold preheating device for producing the circular fitting for the tooth box, the preheating upper cover consists of a fixed seat, a first circular heat insulation cover arranged at the bottom of the fixed seat and a first heat insulation ring arranged on the inner side of the first circular heat insulation cover; the preheating lower cover consists of an installation base, a second round heat insulation cover arranged at the top of the installation base and a second heat insulation ring arranged on the inner side of the second round heat insulation cover; the inner diameter of the first circular heat insulation cover is larger than the outer diameter of the second circular heat insulation cover, the inner diameter of the second circular heat insulation cover is larger than the outer diameter of the first heat insulation ring, and the inner diameter of the first heat insulation ring is larger than the inner diameter of the second heat insulation ring; the clamping mechanism is arranged on the inner side of the second heat insulation ring; the sealing mechanism is arranged between the first circular heat insulation cover and the first heat insulation ring and between the second circular heat insulation cover and the second heat insulation ring.

In the mold preheating device for producing the circular accessories for the tooth box, the clamping mechanism comprises a plurality of inverted T-shaped moving grooves which are arranged at the inner side of the second heat insulation ring along the radial direction and are circumferentially distributed at intervals at the bottom in the second circular heat insulation cover, abdicating grooves matched with the inverted T-shaped moving grooves are vertically arranged on the inner side wall of the second heat insulation ring, rotating moving rods matched with the upper end parts of the inverted T-shaped moving grooves are vertically arranged in the abdicating grooves, the top ends of the rotating moving rods are positioned above the second heat insulation ring, rotating handles are arranged at the top ends of the rotating moving rods, and the diameter of the rotating moving rods is larger than the width of the vertical grooves at the upper parts of the inverted T-shaped moving grooves; a screw rod matched with the inverted T-shaped moving groove is arranged at the bottom end of the rotary moving rod, the length of the screw rod is smaller than the height of the inverted T-shaped moving groove, and a locking nut matched with the screw rod is arranged in a horizontal groove at the lower part of the inverted T-shaped moving groove; an arc-shaped clamping block for clamping the die is connected to the rotary moving rod through a bearing.

In the mold preheating device for producing the circular fittings for the tooth boxes, the inner side wall of the second heat insulation ring is circumferentially provided with the vertical heating grooves which are matched with the vertical heating rods and are in one-to-one correspondence with the vertical heating rods at intervals, and when the preheating upper cover and the preheating lower cover are closed, the vertical heating rods are matched and positioned in the vertical heating grooves; and a heat insulation cavity is arranged between the second heat insulation ring and the inner bottom of the second circular heat insulation cover.

Sealing mechanism includes along vertical setting on first circular thermal-insulated lid inside wall and first thermal-insulated ring lateral wall and the first spout of matched with, it is provided with the first sealing ring with the circular thermal-insulated lid top of second looks complex to slide in the first spout of both sides, be provided with the first reset spring of matched with between first sealing ring and first circular thermal-insulated lid bottom, be provided with first sealed the pad on keeping away from the first sealing ring terminal surface of first reset spring one side, be provided with first reset spring in first circular thermal-insulated lid bottom and cooperate and be used for the control to preheat the pressure sensor of upper cover decline position.

A second sliding groove matched with the inner side wall of the second circular heat insulation cover and the outer side wall of the second heat insulation ring are vertically arranged, a second sealing ring matched with the top end of the first heat insulation ring is arranged in the second sliding grooves on the two sides in a sliding mode, a second return spring matched with the second sealing ring is arranged between the second sealing ring and the bottom of the second circular heat insulation cover, and a second sealing gasket is arranged on the end face of the second sealing ring on the side far away from the second return spring; arc-shaped sealing bulges matched with the first sealing gasket and the second sealing gasket are arranged at the top end of the first heat insulation ring and the top end of the second round heat insulation cover.

In the mold preheating device for producing the round fittings for the tooth boxes, the chain plate conveyor and the heat preservation discharging bin are provided with the positioning sensors which are matched with each other and used for monitoring the conveying positions of the preheating lower covers of all the groups.

In the mold preheating device for producing the circular accessory for the tooth box, the bottom of the corresponding second circular heat insulation cover in the second heat insulation ring is provided with the plurality of support columns at intervals, and the heights of the support columns are sequentially decreased progressively from outside to inside and are distributed in a spherical shape; and a connecting pipe and a metal hose which are communicated are arranged between two adjacent second heat insulation rings in the same group of preheating lower covers.

The utility model adopts the above structure after, through mutually supporting between preheating insulation can, heat preservation feeding storehouse and the heat preservation play feed bin, can keep warm and insulate against heat when preheating, block up preheating insulation can feed end and discharge end simultaneously, prevent that the heat from scattering and disappearing influence surrounding environment, resources are saved and reduction in production cost from preheating insulation can feed end and discharge end. The lifting driving mechanism drives the preheating upper cover and the preheating lower cover to be mutually closed, so that the sealing and uniform heating can be realized when the vertical heating rod preheats the die, the preheating working efficiency is effectively improved, and the resource waste caused by heat dissipation can be prevented. Can press from both sides tightly fixedly to the mould in preheating the lower cover when mould drag chain conveyer carries through fixture, prevent that the mould from taking place displacement and striking, cause the mould and preheat the lower cover and produce the damage, influence life. The sealing performance of the preheating upper cover and the preheating lower cover during mutual closing can be guaranteed through the sealing heating mechanism, the mold is subjected to sealing heating, and rapid preheating is achieved.

Drawings

The present invention will be described in further detail with reference to the following examples, which are not intended to limit the invention.

Fig. 1 is a perspective view of the present invention;

fig. 2 is a schematic structural diagram of the present invention;

FIG. 3 is a schematic structural view of the preheating upper cover of the present invention;

FIG. 4 is a schematic structural view of the preheating lower cover of the present invention;

FIG. 5 is a top view of the lower cover of the present invention;

fig. 6 is an assembly view of the preheating lower cover and the preheating lower cover of the present invention.

In the figure: 1. a chain scraper conveyor; 2. preheating the heat preservation box; 2a, mounting plates; 2b, a heat-preservation feeding bin; 2c, a heat preservation discharging bin; 3. a lifting drive mechanism; 3a, a lifting oil cylinder; 3b, a guide rod; 4. preheating the upper cover; 4a, a fixed seat; 4b, a first circular heat insulation cover; 4c, a first heat insulation ring; 5. a vertical heating rod; 6. preheating a lower cover; 6a, a mounting seat; 6b, a second round heat insulation cover; 6c, a second heat insulation ring; 7. a clamping mechanism; 7a, an inverted T-shaped moving groove; 7b, an abdicating groove; 7c, rotating the movable rod; 7d, rotating the handle; 7e, a screw rod; 7f, locking a nut; 7g, arc-shaped clamping blocks; 8. a sealing mechanism; 8a, a first chute; 8b, a first sealing ring; 8c, a first return spring; 8d, a first gasket; 8e, a pressure sensor; 8f, a second chute; 8g of a second sealing ring; 8h, a second return spring; 8i, a second gasket; 8j, arc-shaped sealing bulges; 9. a vertical heating tank; 10. a heat insulation cavity; 11. a positioning sensor; 12. a support pillar; 13. a connecting pipe; 14. a metal hose; 15. and a support plate.

Detailed Description

Referring to fig. 1 to 6, the mold preheating device for producing circular fittings for tooth boxes of the present invention comprises a chain scraper conveyor 1, wherein a preheating insulation box 2 matched with the chain scraper conveyor 1 is arranged at the top of the chain scraper conveyor 1, a mounting plate 2a is horizontally arranged in the preheating insulation box 2, and a lifting driving mechanism 3 connected with the mounting plate 2a is arranged at the top of the preheating insulation box 2; a plurality of preheating upper covers 4 are arranged at the bottom of the mounting plate 2a at intervals along the conveying direction of the chain scraper conveyor 1, and a plurality of vertical heating rods 5 matched with the mould are arranged in the preheating upper covers 4 at intervals along the circumferential direction.

Preferably, the lifting driving mechanism 3 comprises a lifting oil cylinder 3a vertically arranged at the top of the preheating insulation box 2, the free end of a piston rod of the lifting oil cylinder 3a extends into the preheating insulation box 2 to be connected with the mounting plate 2a, and guide rods 3b vertically arranged on the preheating insulation box 2 at two sides of the lifting oil cylinder 3a and connected with the mounting plate 2 a. During operation, lift cylinder 3a drives mounting panel 2a and goes up and down under the guide effect of guide bar 3b, the realization preheats the lock of upper cover 4 and preheating lower cover 6 and breaks away from, preheats upper cover 4 and preheats between the lower cover 6 closed each other, can realize sealed even heating when vertical heating rod 5 preheats the mould, effectively improve the work efficiency who preheats, can effectively prevent to preheat the heat scattering and disappearing between upper cover 4 and the preheating lower cover 6 simultaneously and cause the wasting of resources.

Furthermore, a plurality of groups of preheating lower covers 6 matched with the preheating upper covers 4 are arranged on the chain plate of the chain plate conveyor 1 at intervals, and the number of the preheating lower covers 6 in each group is the same as that of the preheating upper covers 4 at the bottom of the mounting plate 2 a; a heat-insulation feeding bin 2b is arranged on one feeding side of the preheating heat-insulation box 2 along the conveying direction of the chain plate conveyor 1, and a heat-insulation discharging bin 2c is arranged on the preheating heat-insulation box 2 on the other side of the heat-insulation feeding bin 2 b; through preheating insulation can 2, heat preservation feed bin 2b and keeping warm and go out to cooperate between the feed bin 2c, can keep warm when preheating and insulate against heat, block up preheating insulation can 2 feed end and discharge end simultaneously, prevent that the heat from preheating insulation can 2 feed end and discharge end and scattering and disappearing influence surrounding environment, resources are saved and reduction in production cost.

When one group of the preheating lower covers 6 enters the preheating insulation box 2 and is closed with the preheating upper cover 4 for heating, the rear group of the preheating lower covers 6 at the feeding side along the conveying direction are positioned in the insulation feeding bin 2b, and the front group of the preheating lower covers 6 at the discharging side along the conveying direction are positioned in the insulation discharging bin 2 c; the distance between the inner top parts of the heat-insulation feeding bin 2b and the heat-insulation discharging bin 2c and the top end of the preheating lower cover 6 is 3-5 mm. Through two sets of lower covers 6 of preheating around blocking up heat preservation feeding storehouse 2b and heat preservation play feed bin 2c respectively, can preheat and keep warm to two sets of lower covers 6 of preheating in heat preservation feeding storehouse 2b and the heat preservation play feed bin 2c, effectively prevent simultaneously that the heat that preheats insulation can 2 from scattering and disappearing, guarantee to preheat efficiency.

A clamping mechanism 7 for clamping and fixing the die is arranged in the preheating lower cover 6; a sealing mechanism 8 for assisting the preheating of the die is arranged between the preheating upper cover 4 and the preheating lower cover 6.

Preferably, the preheating upper cover 4 consists of a fixed seat 4a, a first circular heat insulation cover 4b arranged at the bottom of the fixed seat 4a and a first heat insulation ring 4c arranged at the inner side of the first circular heat insulation cover 4 b; the preheating lower cover 6 consists of an installation seat 6a, a second round heat insulation cover 6b arranged at the top of the installation seat 6a and a second heat insulation ring 6c arranged at the inner side of the second round heat insulation cover 6 b; the inner diameter of the first circular heat insulation cover 4b is larger than the outer diameter of the second circular heat insulation cover 6b, the inner diameter of the second circular heat insulation cover 6b is larger than the outer diameter of the first heat insulation ring 4c, and the inner diameter of the first heat insulation ring 4c is larger than the inner diameter of the second heat insulation ring 6 c; the clamping mechanism 7 is arranged on the inner side of the second heat insulation ring 6 c; the sealing mechanism 8 is arranged between the first circular heat insulation cover 4b and the first heat insulation ring 4c and between the second circular heat insulation cover 6b and the second heat insulation ring 6 c.

Can conveniently carry out the dismouting, convenient maintenance and change to preheating upper cover 4 and preheating lower cover 6 through fixing base 4a and mount pad 6 a. Through mutually supporting between first circular thermal-insulated lid 4b, first thermal-insulated ring 4c, the circular thermal-insulated lid of second 6b and the second thermal-insulated ring 6c, can realize multiple thermal-insulated effect, prevent that the heat from scattering and disappearing, improve the work efficiency who preheats.

Preferably, the clamping mechanism 7 comprises a plurality of inverted T-shaped moving grooves 7a which are arranged at the inner side of the second heat insulation ring 6c along the radial direction and are circumferentially distributed at intervals at the bottom in the second circular heat insulation cover 6b, abdicating grooves 7b which are matched with the inverted T-shaped moving grooves 7a are vertically arranged on the inner side wall of the second heat insulation ring 6c, rotating moving rods 7c which are matched with the upper end parts of the inverted T-shaped moving grooves 7a are vertically arranged in the abdicating grooves 7b, the top ends of the rotating moving rods 7c are arranged above the second heat insulation ring 6c, rotating handles 7d are arranged at the top ends of the rotating moving rods 7c, and the diameter of the rotating moving rods 7c is larger than the width of the vertical grooves at the upper parts of the inverted T-shaped moving grooves 7 a; a screw rod 7e matched with the inverted T-shaped moving groove 7a is arranged at the bottom end of the rotary moving rod 7c, the length of the screw rod 7e is smaller than the height of the inverted T-shaped moving groove 7a, and a locking nut 7f matched with the screw rod 7e is arranged in a horizontal groove at the lower part of the inverted T-shaped moving groove 7 a; an arc-shaped clamp 7g for clamping the mold is connected to the rotary moving rod 7c through a bearing.

In an initial state, when a mold is not placed in the second heat insulation ring 6c, each rotary moving rod 7c is positioned in the abdicating groove 7b, the arc-shaped clamping block 7g is attached to the inner side wall of the second heat insulation ring 6c, and the rotary moving rods 7c are locked and positioned above the inverted T-shaped moving groove 7a through the matching of the screw rod 7e and the locking nut 7 f; when a mold is required to be clamped, the rotating handle 7d is rotated to the rotating movable rod 7c, the rotating movable rod 7c is rotated to drive the screw rod 7e to rotate, the screw rod 7e rotates to enable the locking nut 7f to move downwards and loosen, then the rotating movable rod 7c is pushed to move along the direction of the inverted T-shaped movable groove 7a relative to the inner side of the second heat insulation ring 6c, the arc-shaped clamping blocks 7g are attached to the clamping mold, then the rotating movable rod 7c is rotated in the opposite direction, the screw rod 7e drives the locking nut 7f to move upwards and is locked and positioned at the top end of the horizontal groove of the inverted T-shaped movable groove 7a, and therefore the position of the rotating movable rod 7c is fixed, the arc-shaped clamping blocks 7g are matched with each other to clamp and fix the mold, the mold can be prevented from being displaced and impacted, the mold and the preheating lower cover 6 are prevented from being damaged, and the service life is influenced.

Furthermore, vertical heating grooves 9 which are matched with the vertical heating rods 5 and correspond to one another one by one are arranged on the inner side wall of the second heat insulation ring 6c at intervals along the circumferential direction, and when the preheating upper cover 4 and the preheating lower cover 6 are closed, the vertical heating rods 5 are matched and positioned in the vertical heating grooves 9; and a heat insulation cavity 10 is arranged between the inner part of the second heat insulation ring 6c and the inner bottom part of the second circular heat insulation cover 6 b. Through mutually supporting between vertical heating tank 9 and the vertical heating rod 5, can make things convenient for vertical heating rod 5 to counterpoint, can effectively prevent the mould to damage the heating rod when the mould takes place the displacement simultaneously, improve the life of heating rod. The heat preservation and insulation effect when the preheating upper cover 4 and the preheating lower cover 6 are closed for heating can be further improved through the heat insulation cavity 10, and the preheating efficiency is improved.

Preferably, the sealing mechanism 8 includes a first chute 8a vertically disposed on the inner side wall of the first circular heat insulation cover 4b and the outer side wall of the first heat insulation ring 4c and matched with each other, a first sealing ring 8b matched with the top end of the second circular heat insulation cover 6b is slidably disposed in the first chutes 8a on both sides, a first return spring 8c matched with each other is disposed between the first sealing ring 8b and the bottom of the first circular heat insulation cover 4b, a first sealing gasket 8d is disposed on the end surface of the first sealing ring 8b on the side far away from the first return spring 8c, and a pressure sensor 8e matched with the first return spring 8c and used for controlling the descending position of the preheating upper cover 4 is disposed at the bottom of the first circular heat insulation cover 4 b.

A second sliding groove 8f matched with the inner side wall of the second circular heat insulation cover 6b and the outer side wall of the second heat insulation ring 6c are vertically arranged, a second sealing ring 8g matched with the top end of the first heat insulation ring 4c is arranged in the second sliding grooves 8f at two sides in a sliding mode, a second return spring 8h matched with the second sealing ring 8g is arranged between the second sealing ring 8g and the bottom of the second circular heat insulation cover 6b, and a second sealing gasket 8i is arranged on the end face of the second sealing ring 8g at one side far away from the second return spring 8 h; the top end of the first heat insulation ring 4c and the top end of the second circular heat insulation cover 6b are both provided with arc-shaped sealing protrusions 8j matched with the first sealing gasket 8d and the second sealing gasket 8 i.

When the preheating lower cover 6 moves below the preheating upper cover 4, the first sealing ring 8b is opposite to the arc-shaped sealing protrusion 8j at the top end of the second circular heat insulation cover 6b, and the second sealing ring 8g is opposite to the arc-shaped sealing protrusion 8j at the top end of the first heat insulation ring 4 c; when the preheating upper cover 4 moves downwards, the arc-shaped sealing protrusion 8j at the top end of the second circular heat insulation cover 6b contacts the first sealing gasket 8d and pushes the first sealing ring 8b to move upwards along the first sliding groove 8a, the arc-shaped sealing protrusion 8j at the top end of the first heat insulation ring 4c contacts the second sealing gasket 8i and pushes the second sealing ring 8g to move downwards along the first sliding groove 8a, when the first return spring 8c is compressed to a certain degree, the pressure sensor 8e at the bottom of the first circular heat insulation cover 4b senses the pressure of the first return spring 8c and controls the lifting oil cylinder 3a to stop, closing and sealing between the preheating upper cover 4 and the preheating lower cover 6 are completed, sealing heating can be performed on the mold, and rapid preheating is realized.

Preferably, a positioning sensor 11 which is matched with the chain scraper conveyor 1 and the heat preservation discharging bin 2c and used for monitoring the conveying position of each group of preheating lower covers 6 is arranged between the chain scraper conveyor 1 and the heat preservation discharging bin. The positioning sensor 11 comprises positioning columns which are vertically arranged on the chain plate conveyor 1 on one side of each group of the preheating lower covers 6 and are matched with the heat-preservation discharging bin 2c, induction sheets are arranged at the top ends of the positioning columns, and photoelectric sensors matched with the induction sheets are arranged at the top of the heat-preservation discharging bin 2c on one side close to the preheating heat-preservation box 2; when the photoelectric sensor detects and senses the sensing pieces in the group of preheating lower covers 6 conveyed to the heat-preservation discharging bin, the group of preheating lower covers 6 positioned in the preheating heat-preservation box 2 is opposite to the preheating upper cover 4. Can preheat 6 transport position of lower cover to each group and carry out accurate location, guarantee chain scraper conveyor 1 normal orderly work.

Preferably, a plurality of supporting columns 12 are arranged at intervals at the bottom of the second circular heat insulation cover 6b corresponding to the second heat insulation ring 6c, and the heights of the supporting columns 12 are sequentially decreased progressively from outside to inside and are distributed in a spherical shape; a connecting pipe 13 and a metal hose 14 which are communicated are arranged between two adjacent second heat insulation rings 6c in the same group of preheating lower covers 6. The mould can be erected through the support columns 12, so that the bottom of the mould is heated, and the mould is guaranteed to be uniformly heated. The preheating lower covers 6 of the same group can be connected in a conduction mode through the connecting pipe 13 and the metal hose 14, and the temperature uniformity of the molds of the same group is guaranteed.

Preferably, the bottom of the preheating insulation can 2 is provided with a supporting plate 15 below the chain plate corresponding to the chain plate conveyor 1, so that the chain plate and the preheating lower cover 6 can be supported when the lifting oil cylinder 3a drives the preheating upper cover 4 to be pressed downwards to be closed with the preheating lower cover 6, the chain plate is prevented from deforming due to the reaction force of the preheating lower cover 6 on the chain plate, and the sealing performance between the preheating upper cover 4 and the preheating lower cover 6 is ensured.

Preferably, a temperature sensor is arranged at the top in the preheating upper cover 4, so that the heating temperature of the mold can be monitored in real time; temperature sensor, vertical heating rod 5, pressure sensor 8e and positioning sensor 11 all with external control terminal electric connection, its concrete connection mode is prior art, so no longer complain redundantly.

The utility model discloses the theory of operation: when the device works, the molds are placed in the groups of preheating lower covers 6 in front of the preheating insulation can 2, the arc-shaped clamping blocks 7g are matched with each other to clamp and fix the molds by moving the position of the rotary moving rod 7c, and the chain plate conveyor 1 is started to convey the groups of preheating lower covers 6; when a photoelectric sensor in a positioning sensor 11 positioned at the top of the heat preservation discharging bin 2c detects and senses a sensing piece in a group of preheating lower covers 6, the chain plate conveyor 1 stops conveying, at the moment, the group of preheating lower covers 6 positioned in the preheating insulation box 2 is opposite to the preheating upper covers 4, a lifting oil cylinder 3a is started, the lifting oil cylinder 3a drives a mounting plate 2a to descend under the guiding action of a guide rod 3b, the mounting plate 2a drives the preheating upper covers 4 to move downwards, when an arc-shaped sealing protrusion 8j at the top end of a second round heat insulation cover 6b contacts a first sealing gasket 8d and pushes a first sealing ring 8b to move upwards along a first sliding chute 8a, the arc-shaped sealing protrusion 8j at the top end of the first heat insulation ring 4c contacts a second sealing gasket 8i and pushes a second sealing ring 8g to move downwards along the first sliding chute 8a, and when a first return spring 8c is compressed to a certain degree, the pressure sensor 8e positioned at the bottom of the first circular heat insulation cover 4b senses the pressure of the first reset spring 8c and controls the lifting oil cylinder 3a to stop, closing and sealing between the preheating upper cover 4 and the preheating lower cover 6 are completed, the vertical heating rod 5 is started to heat the die, the temperatures in the preheating upper cover 4 and the preheating lower cover 6 are monitored in real time through the temperature sensor, when the heating temperature and the heating time reach preset values, the lifting oil cylinder 3a is started, the lifting oil cylinder 3a rises to drive the preheating upper cover 4 to be separated from the preheating lower cover 6, the lifting oil cylinder 3a stops after being reset, then the chain plate conveyor 1 is started to continuously convey a group of preheating lower covers 6 positioned in the heat insulation feeding bin 2b to enter the preheating process of the heat insulation box 2, and meanwhile, a group of preheating lower covers 6 positioned in the heat insulation discharging bin 2c are conveyed to the next process.

The above embodiment is the preferred embodiment of the present invention, which is only used to facilitate the explanation of the present invention, it is not right to the present invention, which makes the restriction on any form, and any person who knows commonly in the technical field can use the present invention to make the equivalent embodiment of local change or modification without departing from the technical features of the present invention.

Claims (7)

1. A mold preheating device for producing circular accessories for tooth boxes comprises a chain plate conveyor (1) and is characterized in that a preheating insulation box (2) matched with the chain plate conveyor (1) is arranged at the top of the chain plate conveyor (1), a mounting plate (2a) is horizontally arranged in the preheating insulation box (2), and a lifting driving mechanism (3) connected with the mounting plate (2a) is arranged at the top of the preheating insulation box (2); a plurality of preheating upper covers (4) are arranged at the bottom of the mounting plate (2a) at intervals along the conveying direction of the chain plate conveyor (1), and a plurality of vertical heating rods (5) matched with the mold are arranged in the preheating upper covers (4) at intervals along the circumferential direction;

a plurality of groups of preheating lower covers (6) matched with the preheating upper covers (4) are arranged on a chain plate of the chain plate conveyor (1) at intervals, and the number of the preheating lower covers (6) in each group is the same as that of the preheating upper covers (4) at the bottom of the mounting plate (2 a); a heat-insulation feeding bin (2b) is arranged on one feeding side of the preheating heat-insulation box (2) along the conveying direction of the chain plate conveyor (1), and a heat-insulation discharging bin (2c) is arranged on the preheating heat-insulation box (2) on the other side of the heat-insulation feeding bin (2 b);

when one group of preheating lower covers (6) enters the preheating insulation box (2) and is closed with the preheating upper cover (4) for heating, the rear group of preheating lower covers (6) at the feeding side along the conveying direction are positioned in the insulation feeding bin (2b), and the front group of preheating lower covers (6) at the discharging side along the conveying direction are positioned in the insulation discharging bin (2 c); the distance between the inner top of the heat-insulation feeding bin (2b) and the heat-insulation discharging bin (2c) and the top end of the preheating lower cover (6) is 3-5 mm;

a clamping mechanism (7) for clamping and fixing the mold is arranged in the preheating lower cover (6); a sealing mechanism (8) for assisting the preheating of the die is arranged between the preheating upper cover (4) and the preheating lower cover (6).

2. The preheating device for the mold for producing the circular fitting for the tooth box according to claim 1, wherein the lifting driving mechanism (3) comprises a lifting cylinder (3a) vertically arranged at the top of the preheating insulation box (2), the free end of a piston rod of the lifting cylinder (3a) extends into the preheating insulation box (2) to be connected with the mounting plate (2a), and guide rods (3b) connected with the mounting plate (2a) are vertically arranged on the preheating insulation box (2) at two sides of the lifting cylinder (3 a).

3. The mold preheating device for producing the round fitting for the tooth box according to claim 1, wherein the preheating upper cover (4) is composed of a fixed base (4a), a first round heat insulation cover (4b) arranged at the bottom of the fixed base (4a) and a first heat insulation ring (4c) arranged at the inner side of the first round heat insulation cover (4 b); the preheating lower cover (6) consists of an installation seat (6a), a second round heat insulation cover (6b) arranged at the top of the installation seat (6a) and a second heat insulation ring (6c) arranged at the inner side of the second round heat insulation cover (6 b); the inner diameter of the first circular heat insulation cover (4b) is larger than the outer diameter of the second circular heat insulation cover (6b), the inner diameter of the second circular heat insulation cover (6b) is larger than the outer diameter of the first heat insulation ring (4c), and the inner diameter of the first heat insulation ring (4c) is larger than the inner diameter of the second heat insulation ring (6 c); the clamping mechanism (7) is arranged on the inner side of the second heat insulation ring (6 c); the sealing mechanism (8) is arranged between the first circular heat insulation cover (4b) and the first heat insulation ring (4c) and between the second circular heat insulation cover (6b) and the second heat insulation ring (6 c).

4. The preheating device for the mold for producing the round fitting for the dental box as claimed in claim 3, it is characterized in that the clamping mechanism (7) comprises a plurality of inverted T-shaped moving grooves (7a) which are arranged at the inner side of the second heat insulation ring (6c) along the radial direction and are distributed at the inner bottom of the second circular heat insulation cover (6b) along the circumferential direction at intervals, the inner side wall of the second heat insulation ring (6c) is vertically provided with abdicating grooves (7b) matched with the inverted T-shaped moving grooves (7a), a rotating moving rod (7c) which is matched with the upper end part of the inverted T-shaped moving groove (7a) is vertically arranged in each abdicating groove (7b), the top end of each rotating moving rod (7c) is positioned above the second heat insulation ring (6c), a rotating handle (7d) is arranged at the top end of each rotating moving rod (7c), and the diameter of each rotating moving rod (7c) is larger than the width of the vertical groove at the upper part of the inverted T-shaped moving groove (7 a); a screw rod (7e) matched with the inverted T-shaped moving groove (7a) is arranged at the bottom end of the rotary moving rod (7c), the length of the screw rod (7e) is smaller than the height of the inverted T-shaped moving groove (7a), and a locking nut (7f) matched with the screw rod (7e) is arranged in a horizontal groove at the lower part of the inverted T-shaped moving groove (7 a); an arc-shaped clamping block (7g) for clamping the die is connected to the rotary moving rod (7c) through a bearing.

5. The preheating device for the mold for producing the circular fittings for the tooth box according to claim 3, wherein the inner side wall of the second heat insulation ring (6c) is provided with vertical heating grooves (9) which are matched with the vertical heating rods (5) at intervals along the circumferential direction and are in one-to-one correspondence, and when the preheating upper cover (4) and the preheating lower cover (6) are closed, the vertical heating rods (5) are matched and positioned in the vertical heating grooves (9); a heat insulation cavity (10) is arranged between the inner part of the second heat insulation ring (6c) and the inner bottom part of the second circular heat insulation cover (6 b);

the sealing mechanism (8) comprises a first sliding groove (8a) which is vertically arranged on the inner side wall of the first circular heat insulation cover (4b) and the outer side wall of the first heat insulation ring (4c) and is matched with the first sliding groove, a first sealing ring (8b) which is matched with the top end of the second circular heat insulation cover (6b) is arranged in the first sliding groove (8a) on the two sides in a sliding manner, a first return spring (8c) which is matched with the first sliding groove is arranged between the first sealing ring (8b) and the bottom of the first circular heat insulation cover (4b), a first sealing gasket (8d) is arranged on the end face of the first sealing ring (8b) on one side far away from the first return spring (8c), and a pressure sensor (8e) which is matched with the first return spring (8c) and is used for controlling the descending position of the preheating upper cover (4) is arranged at the bottom of the first circular heat insulation cover (4 b);

a second sliding groove (8f) which is matched with the inner side wall of the second circular heat insulation cover (6b) and the outer side wall of the second heat insulation ring (6c) are vertically arranged, a second sealing ring (8g) which is matched with the top end of the first heat insulation ring (4c) is arranged in the second sliding grooves (8f) at the two sides in a sliding manner, a second return spring (8h) which is matched with the second sliding grooves is arranged between the second sealing ring (8g) and the bottom of the second circular heat insulation cover (6b), and a second sealing gasket (8i) is arranged on the end face of the second sealing ring (8g) at one side far away from the second return spring (8 h); arc-shaped sealing protrusions (8j) matched with the first sealing gasket (8d) and the second sealing gasket (8i) are arranged at the top end of the first heat insulation ring (4c) and the top end of the second round heat insulation cover (6 b).

6. The preheating device for the mold for producing the round fittings for the tooth boxes according to claim 1, characterized in that a positioning sensor (11) which is matched with the chain plate conveyor (1) and the heat preservation discharging bin (2c) and is used for monitoring the conveying position of each group of preheating lower covers (6) is arranged between the chain plate conveyor (1) and the heat preservation discharging bin.

7. The preheating device for the mold for producing the circular fitting for the gear box according to claim 5, wherein a plurality of supporting columns (12) are arranged at intervals at the bottom of the corresponding second circular heat insulation cover (6b) in the second heat insulation ring (6c), and the heights of the supporting columns (12) are sequentially decreased progressively from outside to inside and are distributed in a spherical shape; and a connecting pipe (13) and a metal hose (14) which are communicated are arranged between two adjacent second heat insulation rings (6c) in the same group of preheating lower covers (6).

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