CN217192299U - Anti-adhesion double-screw granulator - Google Patents

Abstract

The utility model relates to a granulator technical field, concretely relates to double screw granulator who prevents sticking. An anti-adhesion double-screw granulator comprises a rack, a machine barrel, a transmission case, a cutting device, a cooling device and an electric cabinet; the top of the rack is provided with a fixing device, and the machine barrel is detachably arranged on the fixing device; a screw is arranged in the machine barrel, the top of the machine barrel is provided with a feed hopper, a vibrating mechanism is arranged on the feed hopper, and a stirring mechanism is arranged in the feed hopper; the transmission case is arranged on the outer side of the machine barrel, is positioned at one end close to the feed hopper and is used for driving the screw to rotate; the cutting device is arranged on one side of the machine barrel, which is far away from the transmission case, and is arranged on the machine frame; the cooling device is arranged below the cutting device and is used for cooling the cut colloidal particles; the electric cabinet is arranged on one side, away from the machine barrel, of the transmission box and is installed on the rack, and the electric cabinet is electrically connected with a control panel. The utility model provides an among the current double screw granulator micelle take place glutinous problem even easily because of can not in time cool off.

Description

Anti-adhesion double-screw granulator

Technical Field

The utility model relates to a granulator technical field, concretely relates to double screw granulator who prevents sticking.

Background

The screw pelletizer is a molding machine capable of manufacturing materials into specific shapes, is similar to an air flow pelletizer and a water spray pelletizer, adopts special screw design and different preparation, and is suitable for regeneration and color mixing pelletizing of various plastics such as PP, PE, PS, ABS, PA, PVC, PC, POM, EVA, LCP, PET, PMMA and the like.

The adhesive tape that present double screw granulator was extruded is cutting the classification back, and the micelle is because of can not in time cool off and take place the condition of adhesion easily, influences the quality of product.

Therefore, it is necessary to provide a technical solution to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides an anti-sticking twin-screw granulator aims at solving current twin-screw granulator and cuts the classification back at the adhesive tape of extruding to the barrel, and the micelle influences product quality's problem because of can not in time cool off the easy condition of taking place sticking even.

In order to achieve the above object, the utility model provides an anti-adhesion twin-screw granulator, including frame, barrel, transmission case, cutting device, cooling device and electric cabinet, wherein:

the top of the rack is provided with a fixing device, and the machine barrel is detachably arranged on the fixing device; a screw is arranged in the machine barrel, a feed hopper is arranged at the top of the machine barrel, a vibrating mechanism is arranged on the feed hopper, and a stirring mechanism is arranged in the feed hopper; the transmission case is arranged on the outer side of the machine barrel and is positioned at one end close to the feed hopper, and the transmission case is arranged on the rack and is used for driving the screw to rotate; the cutting device is arranged on one side of the machine barrel, which is far away from the transmission case, and is arranged on the rack; the cooling device is arranged below the cutting device and is used for cooling the cut colloidal particles; the electric cabinet is arranged on one side of the transmission case, which is far away from the machine barrel, and is arranged on the rack, and the electric cabinet is electrically connected with a control panel.

More specifically, the vibration mechanism comprises a first motor, a driving block, a driven block and a plurality of first springs; the feed hopper is in sliding connection with the machine barrel, the driven block is fixedly connected to the bottom of the feed hopper, and the bottom of the driven block is provided with an inclined surface; the driving block is arranged below the driven block, and the first motor is arranged on the machine barrel and is used for driving the driving block to rotate; the top of the first spring is fixedly connected with the feed hopper, and the bottom of the first spring is fixedly connected with the machine barrel.

More specifically, the inside of first spring is equipped with the guide bar, the guide bar top with feeder hopper fixed connection, its bottom with barrel sliding connection.

More specifically, the stirring mechanism comprises a first rotating shaft and a second motor; the first rotating shaft is arranged in the feeding hopper, and stirring rods extend out of two sides of the first rotating shaft respectively; the second motor is installed on the feed hopper and is used for driving the first rotating shaft to rotate.

More specifically, the cutting device comprises a mounting frame, a third motor, a second rotating shaft and a collecting cover; the mounting rack is fixedly connected to the rack; the third motor is arranged on the mounting frame, the second rotating shaft is arranged on the output end of the third motor, and a plurality of cutting blades extend out of the outer side of the second rotating shaft; the collecting cover covers the outer side of the cutting blade and is installed on the rack, and a discharge hole is formed in the bottom of the collecting cover.

More specifically, the cooling device comprises a cooling box, a refrigeration cavity, a cooling pump, a fourth motor and a third rotating shaft; the cooling box is arranged below the aggregate cover, and a cooling cavity is arranged in the middle of the cooling box; the refrigeration cavity is arranged on the outer wall of the cooling box, a plurality of refrigeration pipes are arranged on the refrigeration cavity, and the refrigeration pipes extend into the cooling cavity; the cooling pump is arranged on the rack and is connected with the refrigeration cavity; the third rotating shaft is arranged in the cooling cavity, a plurality of mixing rods extend out of the outer side of the third rotating shaft, and the fourth motor is arranged at the bottom of the cooling box and used for driving the third rotating shaft to rotate.

More specifically, the cooling tank is in the outside in cooling chamber is equipped with the chamber that catchments, be equipped with on the cooling tank with catchment inlet tube and the outlet pipe that the chamber is linked together.

More specifically, the fixing device comprises a base, an arc-shaped block and a locking piece; the base is fixedly connected to the rack, and the machine barrel is arranged on the base; the two arc-shaped blocks are wrapped on the outer side of the machine barrel, the bottoms of the two arc-shaped blocks are hinged to the two ends of the base respectively, one end, far away from the base, of each arc-shaped block extends out of the mounting block, the two mounting blocks are in contact with each other, and clamping grooves are formed in the back-to-face surfaces of the two mounting blocks; the locking part is located the top of installation piece, it includes lock sleeve and two briquetting, the lock sleeve both ends difference fixedly connected with second spring, two the briquetting pastes respectively and touches in two on the back of the body of installation piece is opposite, and fixed connection is respectively in two the second spring is kept away from one of lock sleeve is served, be equipped with the fixture block on the briquetting, the fixture block is arranged in the draw-in groove.

More specifically, the outside of barrel is equipped with the protection casing, the protection casing is installed in the frame.

The utility model relates to an anti-sticking's twin-screw granulator's technological effect does:

1. this application sets up rabbling mechanism and vibration mechanism in the feeder hopper for when the raw materials were poured into in the feeder hopper, the rabbling mechanism can stir the raw materials, the striking, avoid the big piece raw materials promptly can't slide down extremely in the barrel, the design of vibration mechanism makes the feeder hopper constantly produce vibrations in the feeding process simultaneously, avoids the raw materials card to die in the discharge gate department of feeder hopper bottom.

2. This application adopts cooling device's design, and the adhesive tape of extruding as the barrel afterbody receives cutting device to cut the classification back, and in the micelle fell into cooling device, in-process cooling device constantly cooled off the micelle, avoided between the micelle each other glutinous even, improved product quality.

Drawings

Fig. 1 is a schematic structural view of an anti-sticking twin-screw granulator according to the present invention;

FIG. 2 is an enlarged schematic view at A in FIG. 1;

FIG. 3 is an enlarged schematic view at B of FIG. 1;

fig. 4 is a schematic structural view (not shown with a protective cover) of the anti-sticking twin-screw pelletizer at another view angle according to the present invention;

fig. 5 is a schematic structural view of a vibration mechanism in an anti-sticking twin-screw granulator according to the present invention;

FIG. 6 is a schematic structural view of a cutting device in the anti-sticking twin-screw pelletizer (not shown with a collecting cover);

fig. 7 is a schematic structural view of a cooling device in an anti-sticking twin-screw granulator according to the present invention;

fig. 8 is a partial cross-sectional view of a cooling device in an anti-sticking twin-screw pelletizer in accordance with the present invention;

fig. 9 is a schematic structural view of a fixing device in an anti-sticking twin-screw granulator according to the present invention;

fig. 10 is an enlarged schematic view of the position C in the fixing device of the anti-sticking twin-screw pelletizer according to the present invention.

The labels in the figure are:

1, a frame; 2-machine barrel; 3, a transmission case; 4, a cutting device; 5-a cooling device; 6, an electric cabinet; 7-a fixing device; 8, a feed hopper; 9-a protective cover;

21-a discharge die head;

41-a mounting frame; 42-a third motor; 43 — a second shaft; 44-a collection hood; 45-cutting the blade;

51-a cooling box; 511-cooling chamber; 512-water collecting cavity; 52-a refrigeration cavity; 53-cooling pump; 54-a fourth motor; 55-a third rotating shaft; 56-cooling pipe; 57-mixing roll; 58-a water inlet pipe; 59-water outlet pipe;

61-control panel;

71-a base; 72-arc block; 721-mounting blocks; 722-card slot; 73-a locking member; 731-locking sleeve; 732-briquetting; 733 — second spring; 734-fixture block;

81-a vibration mechanism; 811 — a first electric machine; 812 — active block; 813-follower block; 814 — a first spring; 815 — a guide bar; 82-a stirring mechanism; 821-first rotating shaft; 822-a second motor; 823-stirring rod;

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the embodiments of the present invention, it should be understood that the orientations and positional relationships indicated by the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like are based on the orientations and positional relationships shown in the drawings and are only for convenience in describing the embodiments of the present invention and for simplicity in description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In order to more clearly illustrate the technical solution of the present invention, the following provides a preferred embodiment, specifically referring to fig. 1 to 10, an anti-sticking twin-screw pelletizer, comprising a frame 1, a machine barrel 2, a transmission case 3, a cutting device 4, a cooling device 5 and an electric control box 6, wherein:

a fixing device 7 is installed at the top of the machine frame 1, and the machine barrel 2 is detachably installed on the fixing device 7; a screw is arranged in the machine barrel 2, the top of the machine barrel is provided with a feed hopper 8, a vibrating mechanism 81 is arranged on the feed hopper 8, and a stirring mechanism 82 is arranged in the feed hopper 8; the transmission case 3 is arranged outside the machine barrel 2 and is positioned at one end close to the feed hopper 8, and the transmission case 3 is arranged on the rack 1 and is used for driving the screw to rotate; the cutting device 4 is arranged on one side of the machine barrel 2 far away from the transmission case 3 and is arranged on the machine frame 1; the cooling device 5 is arranged below the cutting device 4 and is used for cooling the cut colloidal particles; the electric cabinet 6 is arranged on one side of the transmission case 3 far away from the machine barrel 2 and is installed on the rack 1, and the electric cabinet 6 is electrically connected with a control panel 61.

In this embodiment, be provided with rabbling mechanism 82 and vibration mechanism 81 in the feeder hopper 8, and then when the raw materials poured into in the feeder hopper 8, the rabbling mechanism 82 can stir, the striking to the raw materials, avoids the unable gliding to barrel 2 of bold raw materials promptly, and the design of vibration mechanism 81 makes feed hopper 8 constantly produce vibrations in the feeding process simultaneously, avoids the raw materials card to die in the discharge gate department of feeder hopper 8 bottom.

Further, in this embodiment, adopt cooling device 5's design, receive cutting device 4 to cut the classification back when the adhesive tape of extruding of 2 afterbody on a machine section of thick bamboo, the micelle falls into cooling device 5 in, and in-process cooling device 5 constantly cools off the micelle, avoids gluing each other between the micelle, improves product quality.

It should be noted that a transmission motor and a plurality of transmission gears are arranged in the transmission case 3, and the purpose of driving the screw to rotate is achieved through the cooperation of the above components.

As a preferable solution of this embodiment, the vibration mechanism 81 includes a first motor 811, a driving mass 812, a driven mass 813, and a plurality of first springs 814; the feed hopper 8 is slidably connected with the machine barrel 2, the driven block 813 is fixedly connected to the bottom of the feed hopper 8, and the bottom of the driven block is provided with an inclined surface; the driving block 812 is arranged below the driven block 813, and the first motor 811 is mounted on the machine barrel 2 and is used for driving the driving block 812 to rotate; the first spring 814 is fixedly connected at the top to the hopper 8 and at the bottom to the barrel 2. It should be noted that, when the raw material is stored, moisture is carried due to the influence of damp air, and then the raw material is easily adhered to the inside of the feeding hopper 8, so that the raw material is blocked, in this embodiment, a design of the vibration mechanism 81 is adopted, when the raw material is poured into the feeding hopper 8, the first motor 811 is started to drive the driving block 812 to rotate, the driving block 812 gradually contacts with the inclined surface in the rotation process, and jacks up the driven block 813 along the inclined surface, when the driving block 812 is separated from the driven block 813, the feeding hopper 8 moves downward due to losing the supporting force, and under the action of the first springs 814, the feeding hopper 8 vibrates, and then an impact force is generated to impact the raw material in the feeding hopper 8, so as to avoid the blocking of the feeding hopper 8. The first motor 811 is electrically connected to the electric cabinet 6, and the vibration mechanism 81 is controllable by the control panel 61.

Preferably, the first spring 814 is provided with a guide rod 815 inside, the top of the guide rod 815 is fixedly connected to the hopper 8, and the bottom of the guide rod 815 is slidably connected to the barrel 2. The design of the guide bars 815 increases the stability of the feeding funnel 8, making it movable only in the vertical direction.

As a preferable solution of this embodiment, the stirring mechanism 82 includes a first rotating shaft 821 and a second motor 822; the first rotating shaft 821 is installed inside the feed hopper 8, and stirring rods 823 extend out of two sides of the first rotating shaft 821 respectively; the second motor 822 is installed on the feeding hopper 8, and is used for driving the first rotating shaft 821 to rotate. When pouring in the raw materials in the feeder hopper 8, the second motor 822 starts to drive the first rotating shaft 821 to rotate, and then the stirring rod 823 stirs and crushes the large raw materials entering the feeder hopper 8, so that the large raw materials cannot be discharged from the discharge port of the feeder hopper 8 to slide to the inside of the machine barrel 2. It should be noted that the second motor 822 is electrically connected to the electric cabinet 6, and further the stirring mechanism 82 can be controlled by the control panel 61.

As a preferable scheme of the present embodiment, the cutting device 4 includes a mounting frame 41, a third motor 42, a second rotating shaft 43 and a collecting cover 44; the mounting frame 41 is fixedly connected to the rack 1; the third motor 42 is mounted on the mounting frame 41, the second rotating shaft 43 is mounted on the output end of the third motor 42, and a plurality of cutting blades 45 extend out of the outer side of the second rotating shaft 43; the collecting cover 44 covers the outer side of the cutting blade 45 and is arranged on the rack 1, and a discharge hole is formed in the bottom of the collecting cover. 2 rear ends of barrel are equipped with ejection of compact die head 21, the sizing material by the formation adhesive tape is extruded to the hole site on the ejection of compact die head 21, at this moment, third motor 42 starts second pivot 43 is rotatory in order to drive cutting blade 45 cuts the sizing classification to the adhesive tape, the design of cover 44 that gathers materials avoids because of cutting blade's impact leads to the micelle outwards to fly out. It should be noted that the third motor 42 is electrically connected to the electric cabinet 6, and the cutting device 4 can be controlled by the control panel 61.

As a preferable scheme of the present embodiment, the cooling device 5 includes a cooling box 51, a refrigeration cavity 52, a cooling pump 53, a fourth motor 54, and a third rotating shaft 55; the cooling box 51 is arranged below the aggregate cover 44, and a cooling cavity 511 is arranged in the middle of the cooling box; the refrigeration cavity 52 is installed on the outer wall of the cooling box 51, a plurality of refrigeration pipes 56 are arranged on the refrigeration cavity 52, and the refrigeration pipes 56 extend into the cooling cavity 511; the cooling pump 53 is mounted on the rack 1 and connected with the refrigeration cavity 52; the third rotating shaft 55 is disposed in the cooling chamber 511, a plurality of mixing rods extend from the outer side of the third rotating shaft, and the fourth motor 54 is mounted at the bottom of the cooling box 51 and is used for driving the third rotating shaft 55 to rotate. The adhesive tape warp cutting device 4 cuts and falls into after forming the micelle in cooler bin 51, at this moment, cooling pump 53 inputs the air in refrigeration chamber 52 to carry out the forced air cooling shaping along the ejection of refrigeration pipe 56 to the plastic grain, the in-process, fourth motor 54 drive third pivot 55 is rotatory, makes mixing roller 57 drives the micelle stirring, guarantees the complete cooling of micelle. It should be noted that the fourth motor 54 and the cooling pump 53 are both electrically connected to the electric cabinet 6, and the cooling device 5 can be controlled by the control panel 61.

As a preferable scheme of this embodiment, a water collecting cavity 512 is provided outside the cooling cavity 511 of the cooling tank 51, and a water inlet pipe 58 and a water outlet pipe 59 which are communicated with the water collecting cavity 512 are provided on the cooling tank 51. It should be noted that the water inlet pipe 58 is connected with a liquid nitrogen tank, the temperature of the liquid nitrogen is low, and the liquid nitrogen is continuously sprayed into the water collecting cavity 512 to ensure that the temperature of the cooling box 51 is not raised along with the falling of the colloidal particles.

As a preferable scheme of this embodiment, the fixing device 7 includes a base 71, an arc-shaped block 72 and a locking member 73; the base 71 is fixedly connected to the rack 1, and the machine barrel 2 is arranged on the base 71; the number of the arc-shaped blocks 72 is two, the two arc-shaped blocks 72 are wound on the outer side of the machine barrel 2, the bottoms of the two arc-shaped blocks 72 are respectively hinged to two ends of the base 71, one end, far away from the base 71, of each arc-shaped block 72 extends out of a mounting block 721, the two mounting blocks 721 are in contact with each other, and clamping grooves 722 are formed in back-to-back surfaces of the two mounting blocks 721; the locking member 73 is arranged above the mounting block 721 and comprises a locking sleeve 731 and two pressing blocks 732, two ends of the locking sleeve 731 are respectively and fixedly connected with a second spring 733, the two pressing blocks 732 are respectively attached to the back and face surfaces of the two mounting blocks 721 and are respectively and fixedly connected to one ends, far away from the locking sleeve 731, of the second springs 733, a clamping block 734 is arranged on the pressing block 732, and the clamping block 734 is arranged in the clamping groove 722. The fixing device 7 surrounds the barrel 2 through the matching of the two arc-shaped blocks 72 and the base 71, and locks the positions of the two arc-shaped blocks 72 through the locking member 73 to fix the barrel 2, so that when the barrel 2 breaks down or needs to be disassembled due to other reasons, the two arc-shaped blocks 72 can be separated by pulling the two pressing blocks 732 outwards to separate the clamping block 734 from the clamping groove 722, and the barrel 2 can be conveniently disassembled.

As a preferable scheme of this embodiment, a protection cover 9 is provided on the outer side of the cylinder 2, and the protection cover 9 is mounted on the frame 1.

The utility model relates to an anti-sticking twin-screw granulator even through reasonable structure setting, has solved current twin-screw granulator and has cut the classification back at the adhesive tape of extruding the barrel, and the micelle influences product quality's problem because of can not in time cool off the easy condition that takes place sticking even.

The above description is only for the preferred embodiment of the present invention, and the structure is not limited to the above-mentioned shape, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. An anti-sticking twin-screw granulator is characterized in that: including frame, barrel, transmission case, cutting device, cooling device and electric cabinet, wherein:

the top of the rack is provided with a fixing device, and the machine barrel is detachably arranged on the fixing device; a screw is arranged in the machine barrel, a feed hopper is arranged at the top of the machine barrel, a vibrating mechanism is arranged on the feed hopper, and a stirring mechanism is arranged in the feed hopper; the transmission case is arranged on the outer side of the machine barrel and is positioned at one end close to the feed hopper, and the transmission case is arranged on the rack and is used for driving the screw to rotate; the cutting device is arranged on one side of the machine barrel, which is far away from the transmission case, and is arranged on the rack; the cooling device is arranged below the cutting device and is used for cooling the cut colloidal particles; the electric cabinet is arranged on one side of the transmission case, which is far away from the machine barrel, and is arranged on the rack, and the electric cabinet is electrically connected with a control panel.

2. The twin-screw pelletizer of claim 1, with anti-sticking properties, characterized in that: the vibration mechanism comprises a first motor, a driving block, a driven block and a plurality of first springs; the feed hopper is in sliding connection with the machine barrel, the driven block is fixedly connected to the bottom of the feed hopper, and the bottom of the driven block is provided with an inclined surface; the driving block is arranged below the driven block, and the first motor is arranged on the machine barrel and is used for driving the driving block to rotate; the top of the first spring is fixedly connected with the feed hopper, and the bottom of the first spring is fixedly connected with the machine barrel.

3. The twin screw pelletizer of claim 2, wherein: the inside of first spring is equipped with the guide bar, the guide bar top with feeder hopper fixed connection, its bottom with barrel sliding connection.

4. The anti-blocking twin screw pelletizer of claim 1, wherein: the stirring mechanism comprises a first rotating shaft and a second motor; the first rotating shaft is arranged in the feed hopper, and stirring rods extend out of two sides of the first rotating shaft respectively; the second motor is installed on the feed hopper and is used for driving the first rotating shaft to rotate.

5. The anti-blocking twin screw pelletizer of claim 1, wherein: the cutting device comprises a mounting frame, a third motor, a second rotating shaft and a material collecting cover; the mounting rack is fixedly connected to the rack; the third motor is arranged on the mounting frame, the second rotating shaft is arranged on the output end of the third motor, and a plurality of cutting blades extend out of the outer side of the second rotating shaft; the collecting cover covers the outer side of the cutting blade and is installed on the rack, and a discharge hole is formed in the bottom of the collecting cover.

6. The twin screw pelletizer of claim 5, wherein: the cooling device comprises a cooling box, a refrigeration cavity, a cooling pump, a fourth motor and a third rotating shaft; the cooling box is arranged below the aggregate cover, and a cooling cavity is arranged in the middle of the cooling box; the refrigeration cavity is arranged on the outer wall of the cooling box, a plurality of refrigeration pipes are arranged on the refrigeration cavity, and the refrigeration pipes extend into the cooling cavity; the cooling pump is arranged on the rack and is connected with the refrigeration cavity; the third rotating shaft is arranged in the cooling cavity, a plurality of mixing rods extend out of the outer side of the third rotating shaft, and the fourth motor is arranged at the bottom of the cooling box and used for driving the third rotating shaft to rotate.

7. The twin screw pelletizer of claim 6, wherein: the cooling box is in the outside in cooling chamber is equipped with the chamber that catchments, be equipped with on the cooling box with catchment the inlet tube and the outlet pipe that the chamber is linked together.

8. The anti-blocking twin screw pelletizer of claim 1, wherein: the fixing device comprises a base, an arc-shaped block and a locking piece; the base is fixedly connected to the rack, and the machine barrel is arranged on the base; the two arc-shaped blocks are wrapped on the outer side of the machine barrel, the bottoms of the two arc-shaped blocks are hinged to the two ends of the base respectively, one end, far away from the base, of each arc-shaped block extends out of the mounting block, the two mounting blocks are in contact with each other, and clamping grooves are formed in the back-to-face surfaces of the two mounting blocks; the locking part is located the top of installation piece, it includes lock sleeve and two briquetting, the lock sleeve both ends difference fixedly connected with second spring, two the briquetting pastes respectively and touches in two on the back of the body of installation piece is opposite, and fixed connection is respectively in two the second spring is kept away from one of lock sleeve is served, be equipped with the fixture block on the briquetting, the fixture block is arranged in the draw-in groove.

9. The twin-screw pelletizer of claim 1, with anti-sticking properties, characterized in that: the outside of barrel is equipped with the protection casing, the protection casing is installed in on the frame.

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