CN224197152U

CN224197152U - A demolding component for injection molding of air conditioner housing.

Info

Publication number: CN224197152U
Application number: CN202520994144.7U
Authority: CN
Inventors: 董利辉
Original assignee: Tianshun Technology Hebei Co ltd
Current assignee: Tianshun Technology Hebei Co ltd
Filing date: 2025-05-20
Publication date: 2026-05-05
Anticipated expiration: 2035-05-20

Abstract

The utility model relates to the technical field of moulds, and discloses a demoulding component for producing injection moulding of an air conditioner shell, which aims to solve the problems that the existing demoulding component depends on a single-point ejector pin and lacks auxiliary means for demoulding, is easy to cause surface mark, deformation and even fracture of a product due to local stress concentration, comprises a supporting table, a fixing frame, a transmission mechanism, a mould closing mechanism and a demoulding mechanism, a guide column and a limit column ensure stable movement, a sealing structure promotes injection moulding precision, obviously shortens demoulding time, when the die is removed, the hydraulic pump reversely descends the lower die, the electric telescopic rod pulls the upper die to ascend, the rack drives the round gear and the bevel gear set to drive the ejection component to move along the guide rail, the fit block of the ejection component is in large-area contact with the air conditioner shell, meanwhile, the air inlet pipe jets air to cool the shell through the air holes, friction force and adhesive force of the die are reduced, stable ejection is realized, action synchronization is ensured through gear-rack linkage, accordingly, the die removing time is obviously shortened, and the production efficiency is improved.

Description

Demoulding assembly for air conditioner shell production injection molding

Technical Field

The utility model relates to the technical field of molds, in particular to a demolding assembly for producing injection molding of an air conditioner shell.

Background

At present, an air conditioner is a household appliance commonly used in daily life of people, an air inlet cover and an air outlet are arranged on an inner machine shell of the air conditioner, the air conditioner shell is in an arc shape integrally, the shape is extremely irregular, no flat surface is used for placing and clamping, the irregular shape is faced, the air conditioner shell is subjected to integral extrusion injection molding, the injection molding method has the advantages of high production speed and high efficiency, automation in operation can be realized, various colors and varieties are numerous, the shape can be simplified to numerous, the size can be increased to small, the product size is accurate, the product is easy to update, the product can be shaped into a product with complex shape, and the injection molding is suitable for the molding processing fields of mass production, products with complex shape and the like.

In chinese patent with publication number CN214239369U, a quick demoulding mould of air conditioner outer machine bottom shell is provided, the upper surface of bottom plate is fixedly connected with roof through a plurality of support columns, the last fixedly connected with of roof has two frame plates of symmetry setting, gear motor is installed to one side of the frame plate that is located the right side, gear motor's output runs through adjacent frame plate and through shaft coupling fixedly connected with pivot one, the other end fixedly connected with bed die body of pivot one, another side fixedly connected with pivot two of bed die body, the other end of pivot two rotates with the side through the bearing and is connected with adjacent frame plate, the last mould body of upper surface mounting of bed die body. When the air conditioner outer machine bottom shell is demoulded, the need of manually clamping and taking down the air conditioner outer machine bottom shell by using a tool is avoided, the labor intensity of workers is reduced, the demould speed is improved, and the production efficiency of the air conditioner outer machine bottom shell is improved.

The inventor considers that the prior related technology has the defects that in the demolding process of the component, the product is directly ejected by the ejector pins, an auxiliary demolding means is lacked, the ejector pin single-point ejection is easy to cause local stress concentration, obvious ejection marks are possibly left on the surface of the product, and the appearance quality, and the bottom shell is deformed or broken are often caused.

Disclosure of utility model

The utility model aims to solve the technical problems that in the prior art, when a demoulding component for producing and injection moulding of an air conditioner shell is used for demoulding, the action area of an ejection block is small, so that uneven demoulding or product deformation caused by overlarge local adhesion force is caused.

The application adopts the following technical scheme that the demoulding assembly for producing injection molding of the air conditioner shell comprises a supporting table, a fixing frame arranged at the upper end of the supporting table, a transmission mechanism arranged at the upper end of the supporting table, a mould closing mechanism arranged at the upper end of the transmission mechanism, and demoulding mechanisms arranged on the inner wall of the fixing frame, wherein the demoulding mechanisms are positioned at two sides of the mould closing mechanism;

The inner wall of the groove is provided with a hydraulic pump, the output end of the hydraulic pump is provided with a connecting plate, the upper end of the connecting plate is provided with a supporting cylinder, the upper end of the transmission mechanism is provided with a lower die part, the upper part of the inner wall of the fixing frame is fixedly connected with an upper die part, and the upper die part and the lower die part form a die clamping mechanism;

The demoulding mechanism comprises a fixed plate arranged on one side of the inner wall of a fixed frame, a guide rail arranged above the fixed plate, the guide rail is fixedly connected to the inner wall of the fixed frame, a rotary rod A arranged at the upper end of the fixed plate is rotatably connected with the fixed plate, a circular gear A arranged on the outer wall of the rotary rod A, one end of the rotary rod A is provided with a bevel gear A, the bevel gear A is far away from the fixed plate, a rotary rod B is arranged on the inner wall of the fixed frame and is rotatably connected with the inner wall of the fixed frame, the rotary rod B is located above the bevel gear A, bevel gears B are arranged at two ends of the rotary rod B and meshed with the bevel gears A, a circular gear B is arranged in the middle of the rotary rod B, and an ejection part is arranged at one end of the guide rail.

Preferably, the ejecting part comprises a sawtooth connecting block arranged at one end of the guide rail, a rectangular groove is formed in one end of the guide rail, the sawtooth connecting block is in sliding connection with the inner wall of the rectangular groove, the sawtooth connecting block is meshed with the circular gear A, an engaging block is arranged at one side of the sawtooth connecting block, an air hole is formed in the upper surface of the engaging block, and an air inlet pipe is arranged at one side of the engaging block.

Preferably, the upper die part comprises an electric telescopic rod arranged on the upper portion of the inner wall of the fixing frame, an upper die body arranged at the lower end of the electric telescopic rod, an injection molding pipe is fixedly connected to the upper end of the upper die body, a rack is fixedly connected to one side of the outer wall of the upper die body, the rack and the circular gear B are located on the same vertical plane, and the rack is meshed with the circular gear B.

Preferably, the transmission mechanism comprises a supporting seat arranged at the upper end of the supporting table, a limiting column arranged at the center of the upper surface of the supporting seat, the supporting column penetrates through the supporting seat, the upper end of the supporting column is fixedly connected with a transmission base, the upper end of the transmission base is fixedly connected with a guide column, and the upper end of the guide column is fixedly connected with a sealing ring.

Preferably, the lower die part comprises a movable plate arranged at the upper end of the transmission base, the lower end of the movable plate is fixedly connected with a fixed column, the fixed column and the limit column are positioned on the same vertical plane, the upper end of the movable plate is fixedly connected with a boss, the boss is positioned in the sealing ring, and the boss, the sealing ring and the upper die body are tightly contacted to form a closed space.

Preferably, the upper end of fly leaf runs through there is the round hole, and the round hole is located the boss outside, and the round hole aperture matches with the guide post, and the round hole is in same vertical plane with the guide post, fly leaf and guide post sliding connection, the lower surface of injection molding pipe flushes with the lower surface of last mould body.

The utility model has the technical effects and advantages that:

The demoulding assembly for producing the injection molding of the air conditioner shell is arranged through the demoulding mechanism, the mould closing mechanism and the rotating mechanism, and in the working process, the large-area contact between the fitting block in the demoulding mechanism and the formed air conditioner shell is realized, and the mechanical ejection and the gas-assisted demoulding are realized by matching with the gas sprayed out by the air holes, so that the gas can not only rapidly cool the shell, but also obviously reduce the friction force and the adhesive force between the shell and the mould, and avoid deformation or tearing caused by local stress concentration.

Drawings

The disclosure of the present utility model is described with reference to the accompanying drawings. It is to be understood that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the utility model. In the drawings, like reference numerals are used to refer to like parts:

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the overall deployment structure of the present utility model;

FIG. 3 is a schematic view of the structure of the ejector component of the present utility model;

FIG. 4 is a schematic view of a demolding mechanism according to the present utility model;

FIG. 5 is a schematic view of the upper mold mechanism of the present utility model;

FIG. 6 is a schematic view of the lower die mechanism of the present utility model;

Fig. 7 is a schematic structural view of a transmission mechanism of the present utility model.

The device comprises a supporting table, 11, a hydraulic pump, 12, a connecting plate, 13, a supporting cylinder, 2, a demoulding mechanism, 21, a fixed plate, 22, a rotary rod A, 23, a bevel gear A, 24, a bevel gear B, 25, a circular gear B, 26, a circular gear A, 27, a rotary rod B, 28, a guide rail, 29, an ejection part, 291, a fitting block, 292, an air inlet pipe, 293, a sawtooth connecting block, 394, an air hole, 3, a mould closing mechanism, 31, a lower mould part, 311, a boss, 312, a movable plate, 313, a fixed column, 314, a round hole, 32, an upper mould part, 321, an upper mould body, 322, a rack, 323, an injection moulding pipe, 324, an electric telescopic rod, 4, a fixed frame, 5, a transmission mechanism, 51, a transmission base, 52, a limit column, 53, a transmission base, 54, a guide column and 55 and a sealing ring.

Detailed Description

It is to be understood that, according to the technical solution of the present utility model, those skilled in the art may propose various alternative structural modes and implementation modes without changing the true spirit of the present utility model. Accordingly, the following detailed description and drawings are merely illustrative of the utility model and are not intended to be exhaustive or to limit the utility model to the precise form disclosed.

Referring to fig. 1, 2 and 4, the utility model provides a technical scheme that an air conditioner shell production injection molding demoulding assembly comprises a supporting table 1, a fixing frame 4 arranged at the upper end of the supporting table 1, a transmission mechanism 5 arranged at the upper end of the supporting table 1, a mould clamping mechanism 3 arranged at the upper end of the transmission mechanism 5, a demoulding mechanism 2 arranged on the inner wall of the fixing frame 4, and the demoulding mechanism 2 arranged at two sides of the mould clamping mechanism 3, wherein the transmission mechanism 5 is positioned in the fixing frame 4;

The inside of the supporting table 1 is provided with a groove, the inner wall of the groove is provided with a hydraulic pump 11, the output end of the hydraulic pump 11 is provided with a connecting plate 12, the upper end of the connecting plate 12 is provided with a supporting cylinder 13, the upper end of the transmission mechanism 5 is provided with a lower die part 31, the upper part of the inner wall of the fixing frame 4 is fixedly connected with an upper die part 32, and the upper die part 32 and the lower die part 31 form a die clamping mechanism 3;

The demoulding mechanism 2 comprises a fixed plate 21 arranged on one side of the inner wall of a fixed frame 4, a guide rail 28 arranged above the fixed plate 21, the guide rail 28 is fixedly connected to the inner wall of the fixed frame 4, a rotary rod A22 arranged at the upper end of the fixed plate 21 is rotationally connected with the fixed plate 21, a round gear A26 arranged on the outer wall of the rotary rod A22, one end of the rotary rod A22 is provided with a bevel gear A23, the bevel gear A23 is far away from the fixed plate 21, the inner wall of the fixed frame 4 is provided with a rotary rod B27, the rotary rod B27 is rotationally connected with the inner wall of the fixed frame 4, the rotary rod B27 is positioned above the bevel gear A23, bevel gears B24 are arranged at two ends of the rotary rod B27 and meshed with the bevel gear A23, a round gear B25 is arranged in the middle of the rotary rod B27, one end of the guide rail 28 is provided with an ejection part 29, a hydraulic pump 11 in a groove in the supporting table 1 is started, and the output end of the hydraulic pump is pushed to move upwards, the connecting plate 12 drives the supporting cylinder 13 to move upwards, the supporting cylinder 13 pushes the transmission mechanism 5 to move synchronously, so that the lower die part 31 moves upwards, after the lower die part 31 contacts with the upper die part 32 and is tightly attached, the die assembly is completed, at the moment, injection molding operation can be performed, plastic raw materials of the air-conditioning shell are injected into a die cavity formed by the upper die part 32 and the lower die part 31, after the plastic raw materials gradually form the shape of the air-conditioning shell in the die cavity in the injection molding stage, the hydraulic pump 11 works reversely, the connecting plate 12, the supporting cylinder 13 and the lower die part 31 are driven to move downwards, the upper die part 32 moves upwards, the round gear B25 rotates along with the round gear B25, the rotation of the round gear B25 drives the rotary rod B27 to rotate, and then bevel gears B24 at two ends of the rotary rod B27 rotate, and as the bevel gears B24 are meshed with the bevel gears A23, the round gear A26 on the rotary rod A22 is driven to rotate, the rotation of the round gear B25 drives the ejection part 29 matched with the round gear B to move along the guide rail 28, the ejection part 29 moves towards the direction of the die cavity, the formed air conditioner shell is ejected from the die, demolding operation is achieved, and manual taking is facilitated.

Referring to fig. 3 and 4, in the present embodiment: the ejector member 29 includes the sawtooth connecting block 293 that sets up in guide rail 28 one end, the rectangular channel has been seted up to guide rail 28 one end, sawtooth connecting block 293 is along the inner wall sliding connection of rectangular channel, sawtooth connecting block 293 meshes with circular gear A26, and set up the block 291 of integrating in sawtooth connecting block 293 one side, the gas pocket 394 has been seted up to the upper surface of block 291, one side of block 291 is provided with intake pipe 292, because circular gear A26 meshes with sawtooth connecting block 293, circular gear A26's rotation drive sawtooth connecting block 293 slides along the rectangular channel of guide rail 28 one end, sawtooth connecting block 293 drives block 291 and moves towards the mould die cavity direction, block 291 directly acts on the air conditioner shell of shaping, begin to carry out preliminary ejection action, make air conditioner shell and mould preliminary separation, in the ejecting in-process of block 291, gas gets into the block 291 inside through intake pipe 292, and the gas pocket 394 blowout of opening on the upper surface of block 291, the air conditioner shell of cooling shaping, further reduced friction and adhesion between air conditioner shell, auxiliary machinery ejector action, make the shell can deviate from the block 291 smoothly with the die cavity, the air conditioner shell can deviate from the block 291 smoothly, the time of integrating, the air conditioner shell can be greatly shortened, the production efficiency is greatly shortened, the time is greatly shortened, the ejector action is realized.

Referring to fig. 1, 4 and 5, in this embodiment, the upper mold part 32 includes an electric telescopic rod 324 disposed at an upper portion of an inner wall of the fixing frame 4, an upper mold body 321 disposed at a lower end of the electric telescopic rod 324, an injection pipe 323 is fixedly connected to an upper end of the upper mold body 321 and located at a left side of the electric telescopic rod 324, a rack 322 is fixedly connected to one side of an outer wall of the upper mold body 321, the rack 322 is in the same vertical plane with the circular gear B25, the rack 322 is meshed with the circular gear B25, the lower mold part 31 is moved upwards, the electric telescopic rod 324 is started, an output end of the electric telescopic rod 324 extends, the electric telescopic rod 324 pushes the upper mold body 321 to move downwards, the lower mold part 31 gradually approaches to and finally completes mold closing, after mold closing is completed, plastic raw materials of an air-conditioning shell are injected into a mold cavity formed by the upper mold body 321 and the lower mold part 31 through the injection pipe 323, after mold closing is completed, the electric telescopic rod 324 contracts, the upper mold body 321 is driven to move upwards, the rack 322 moves upwards along with the upper mold body 321, the upper mold body 321 moves upwards along with the upper mold body 321, the circular gear B25, and the rack 322 is meshed with the circular gear B25, and the rack 322 is driven to move upwards, thereby synchronously and the continuous and consistent and stable movement is ensured in the process.

Referring to fig. 7, in this embodiment, the transmission mechanism 5 includes a supporting seat 51 disposed at an upper end of the supporting table 1, a limiting column 52 disposed at a center of an upper surface of the supporting seat 51, the supporting column 13 penetrates through the supporting seat 51, a transmission base 53 is fixedly connected to an upper end of the supporting column 13, a guide column 54 is fixedly connected to an upper end of the transmission base 53, a sealing ring 55 is fixedly connected to an upper end of the guide column 54, the hydraulic pump 11 is started, an output end of the hydraulic pump pushes the connecting plate 12 to move upwards, the supporting column 13 moves upwards due to the connecting plate 12 being connected with the supporting column 13, the supporting column 13 penetrates through the supporting seat 51, the supporting column 13 can only stably rise along a vertical direction under the limitation of the supporting seat 51, the supporting column 13 drives the transmission base 53 to move upwards, and the guide column 54 and the sealing ring 55 on the transmission base 53 also rise along, so that external impurities are prevented from entering the inside of a mold, and injection molding quality is affected.

Referring to fig. 6 and 7, in this embodiment, the lower mold part 31 includes a movable plate 312 disposed at an upper end of the transmission base 53, a fixed column 313 is fixedly connected to a lower end of the movable plate 312, the fixed column 313 is in the same vertical plane with the limit column 52, a boss 311 is fixedly connected to an upper end of the movable plate 312, the boss 311 is located inside the seal ring 55, the boss 311, the seal ring 55 and the upper mold body 321 are tightly contacted to form a closed space, the closed space formed by the boss 311, the seal ring 55 and the upper mold body 321 can effectively prevent leakage of plastic raw materials in an injection molding process, ensure molding of raw materials in a predetermined space, thereby improving molding quality and dimensional accuracy of the air-conditioning shell, separating the mold, after the fixed column 313 is lowered by a certain height, the fixed column 313 is in contact with the limit column 52, and after the fixed column 313 is highly fixed, thereby keeping the heights of the movable plate 312 and the boss (311) unchanged, the seal ring 55 is continuously lowered, the molded air-conditioning shell is retained on the surface of the boss 311, and the ejector part 29 can eject the air-conditioning shell from the boss 311 more conveniently, thereby improving demolding efficiency.

Referring to fig. 6 and 7, in this embodiment, a circular hole 314 is formed in the upper end of the movable plate 312, the circular hole 314 is located outside the boss 311, the aperture of the circular hole 314 is matched with that of the guide post 54, the circular hole 314 and the guide post 54 are located on the same vertical plane, the movable plate 312 is slidably connected with the guide post 54, and the lower surface of the injection molding tube 323 is flush with the lower surface of the upper mold body 321. The movable plate 312 is matched with the guide post 54 through the round hole 314, so that the lower die part 31 is stable and free from shaking in the up-and-down motion process, the outlet of the injection tube 323 is flush with the lower surface of the upper die body 321, and the product deformation caused by uneven filling during raw material injection is avoided.

Working principle: the user starts the hydraulic pump 11, the output end of the hydraulic pump pushes the connecting plate 12 to move upwards, the supporting cylinder 13 and the transmission mechanism 5 are driven to synchronously rise, the boss 311 of the lower die part 31 is contacted with the upper die body 321 of the upper die part 32 and closely attached to the upper die body 321, a closed injection molding space formed by the boss 311, the sealing ring 55 and the upper die body 321 is formed, the mold closing is completed, at the moment, the plastic raw material of the air-conditioning shell is injected into the die cavity through the injection molding pipe 323, the raw material is cooled and molded in the die cavity, after the injection molding is completed, the hydraulic pump 11 reversely works, the supporting cylinder 13 and the lower die part 31 are driven to move downwards, meanwhile, the electric telescopic rod 324 is contracted, the upper die body 321 is pulled to move upwards, the upper die and the lower die are separated, when the upper die body 321 rises, the rack 322 on the outer wall of the upper die body synchronously moves, and the circular gear B25 meshed with the upper die body is driven to rotate, the rotating rod A22 and the circular gear A26 are driven to rotate by the meshing transmission of the bevel gear B24 and the bevel gear A23, the sawtooth connecting block 293 of the ejection component 29 is driven to slide along the rectangular groove of the guide rail 28, the engagement block 291 is pushed to move towards the direction of the die cavity, the air inlet pipe 292 is used for introducing air into the engagement block 291 when the engagement block 291 contacts the formed air-conditioning shell and applies ejection force, the air is ejected from the air hole 394 to rapidly cool the shell and reduce friction force and adhesion force between the shell and the die, when the fixed column 313 is lowered to be in contact with the limit column 52, the movable plate 312 and the boss 311 are fixed in height, the engagement block 291 stably ejects the shell from the surface of the boss 311 at the moment, so as to realize demolding, the guide column 54 is matched with the round hole 314 of the movable plate 312 in the whole process, the vertical movement stability of the lower die component 31 is ensured, the sealing ring 55 is prevented from leaking raw materials during injection molding, and the molding precision of the shell is ensured, the demolding mechanism 2 and the mold closing mechanism 3 are linked through a gear and a rack, so that the actions are synchronous, and the demolding efficiency and the product quality are remarkably improved.

The technical scope of the present utility model is not limited to the above description, and those skilled in the art may make various changes and modifications to the above-described embodiments without departing from the technical spirit of the present utility model, and these changes and modifications should be included in the scope of the present utility model.

Claims

1. A demolding assembly for injection molding of an air conditioner housing, characterized in that: it includes a support platform, a fixed frame disposed on the upper end of the support platform, a transmission mechanism disposed on the upper end of the support platform, the transmission mechanism being located inside the fixed frame, a mold closing mechanism disposed on the upper end of the transmission mechanism, and a demolding mechanism disposed on the inner wall of the fixed frame, the demolding mechanism being located on both sides of the mold closing mechanism;

The support platform has a groove inside, a hydraulic pump is installed on the inner wall of the groove, a connecting plate is installed at the output end of the hydraulic pump, a supporting cylinder is installed at the upper end of the connecting plate, a lower mold component is installed at the upper end of the transmission mechanism, and an upper mold component is fixedly connected to the upper part of the inner wall of the fixed frame. The upper mold component and the lower mold component form a mold closing mechanism.

The demolding mechanism includes a fixed plate disposed on one side of the inner wall of the fixed frame, a guide rail disposed above the fixed plate and fixedly connected to the inner wall of the fixed frame, a rotating rod A disposed at the upper end of the fixed plate and rotatably connected to the fixed plate, a spherical gear A disposed on the outer wall of the rotating rod A, a bevel gear A disposed at one end of the rotating rod A and away from the fixed plate, a rotating rod B disposed on the inner wall of the fixed frame and rotatably connected to the inner wall of the fixed frame, the rotating rod B being located above the bevel gear A, bevel gears B disposed at both ends of the rotating rod B and meshing with the bevel gear A, a spherical gear B disposed in the middle of the rotating rod B, and an ejector component disposed at one end of the guide rail.

2. The demolding assembly for injection molding of an air conditioner housing according to claim 1, characterized in that: the ejector component includes a serrated connecting block disposed at one end of a guide rail, a rectangular groove being provided at one end of the guide rail, the serrated connecting block being slidably connected along the inner wall of the rectangular groove, the serrated connecting block being meshed with a spur gear A, and a mating block disposed on one side of the serrated connecting block, the upper surface of the mating block being provided with an air hole, and an air inlet pipe being provided on one side of the mating block.

3. A demolding assembly for injection molding of an air conditioner housing according to claim 1, characterized in that: the upper mold component includes an electric telescopic rod disposed on the upper part of the inner wall of the fixed frame, an upper mold body disposed at the lower end of the electric telescopic rod, an injection tube fixedly connected to the upper end of the upper mold body on the left side of the electric telescopic rod, and a rack fixedly connected to one side of the outer wall of the upper mold body, the rack and the spur gear B being in the same vertical plane and meshing with the spur gear B.

4. A demolding assembly for injection molding of an air conditioner housing according to claim 3, characterized in that: the transmission mechanism includes a support base disposed on the upper end of a support platform, a limiting post disposed at the center of the upper surface of the support base, a support cylinder penetrating the support base, a transmission base fixedly connected to the upper end of the support cylinder, a guide post fixedly connected to the upper end of the transmission base, and a sealing ring fixedly connected to the upper end of the guide post.

5. A demolding assembly for injection molding of an air conditioner housing according to claim 4, characterized in that: the lower mold component includes a movable plate disposed on the upper end of the transmission base, a fixed column is fixedly connected to the lower end of the movable plate, the fixed column and the limiting column are on the same vertical plane, a boss is fixedly connected to the upper end of the movable plate, the boss is located inside the sealing ring, and the boss, the sealing ring and the upper mold body are in close contact to form a sealed space.

6. A demolding assembly for injection molding of an air conditioner housing according to claim 5, characterized in that: a circular hole is passed through the upper end of the movable plate, the circular hole is located outside the boss, the diameter of the circular hole matches the guide post, the circular hole and the guide post are in the same vertical plane, the movable plate and the guide post are slidably connected, and the lower surface of the injection tube is flush with the lower surface of the upper mold body.