CN217609222U

CN217609222U - A oiling station for cake production line

Info

Publication number: CN217609222U
Application number: CN202221184270.9U
Authority: CN
Inventors: 林七弟; 李衬
Original assignee: Jinhua Laobeiqiong Food Co ltd
Current assignee: Jinhua Laobeiqiong Food Co ltd
Priority date: 2022-05-16
Filing date: 2022-05-16
Publication date: 2022-10-21
Anticipated expiration: 2032-05-16

Abstract

The utility model discloses an oiling device for a cake production line, which comprises a frame, wherein a conveying device for conveying a mould frame is arranged on the frame, an oiling device for adding edible oil into the mould frame is also arranged on the frame, and an oil brushing device for uniformly smearing the edible oil in the mould frame is arranged at a position adjacent to the oiling device on the frame; the oil brushing device comprises roller brushes and moving devices arranged in pairs, the roller brushes are arranged between the two moving devices, the moving devices comprise first motors, and the first motors drive the roller brushes to move relative to the mold frame while working; the utility model discloses set up device and the brushing oil device of oiling on the production line, the cylinder brush on the brushing oil device paints evenly to the edible oil on mould frame surface is automatic, and degree of automation is high and the brushing oil is even.

Description

A oiling station for cake production line

Technical Field

The utility model belongs to the technical field of the cake production, concretely relates to oiling station for cake production line.

Background

In the processing production process of cake, need carry out the drawing of patterns to the cake that bakes, adopt shedder to realize automatic drawing of patterns among the prior art usually. Generally, the traditional demoulding technology has negative pressure suction demoulding, namely, a cake in a mould frame is sucked out through a sucking disc. The demoulding efficiency is higher, but part of cake is usually left in the mould frame, so that the demoulding method is not thorough and affects the demoulding quality. In order to solve the problems, an operator manually coats edible oil in the mould frame so as to increase the lubrication degree between the cake and the surface of the mould frame. Generally, manual oil brushing is adopted to work on a mold frame, and oil is coated in a groove of the mold frame in a manual oil filling mode before the mold frame is injected with slurry; the traditional oil brushing mode is not only low in efficiency, but also the edible oil is not uniformly smeared. Therefore, it is necessary to design an oiling device with high automation degree.

Disclosure of Invention

The utility model discloses to the problem that exists among the prior art, designed an oiling station for cake production line, the utility model discloses set up oiling device and brushing oil device on the production line, the automatic edible oil of paining evenly to the die frame surface of the last cylinder brush of brushing oil device, degree of automation is high and the brushing oil is even.

The invention aims to be realized by the following technical scheme: an oiling device for a cake production line comprises a rack, wherein a conveying device for conveying a mold frame is arranged on the rack, an oiling device for adding edible oil into the mold frame is also arranged on the rack, and an oil brushing device for uniformly brushing the edible oil in the mold frame is arranged at a position, adjacent to the oiling device, on the rack; the oil brushing device comprises roller brushes and moving devices arranged in pairs, the roller brushes are arranged between the two moving devices, the moving devices comprise first motors, and the first motors drive the roller brushes to move relative to the mold frame while working.

Preferably, the oil brushing device further comprises an oil brushing frame, a limiting assembly and a lifting assembly; the oil brushing frame is characterized in that two side plates which are arranged in parallel relatively are respectively provided with a clamping groove, the moving device comprises a moving platform, a first screw rod, a first motor and a coupler, each moving platform is installed in the clamping groove of the oil brushing frame, and the moving platform and the first screw rod are meshed to move; the first motor is fixedly arranged on the oil brushing frame, one end of a first screw rod is connected with the first motor through a coupler, and the other end of the first screw rod is connected with the oil brushing frame through a bearing; the roller brush is arranged between two moving platforms which are arranged in parallel, and the moving platforms move in inner engagement in the clamping grooves relative to the first screw rod when the first motor drives the first screw rod to rotate.

The first motor drives the first screw rod to rotate, and the first screw rod drives the moving platform to engage and move in the clamping groove while rotating; the two moving platforms drive the roller brush to move relative to the mold frame when moving synchronously, and edible oil in the groove of the mold frame can be automatically and uniformly coated in the moving process of the roller brush.

Preferably, a through hole is formed in the position, back to the roller brush, of the moving platform, threads meshed with the first screw rod are arranged in the through hole, and the moving platform is sleeved on the first screw rod.

The first screw rod can drive the movable platform to move in a meshing manner in the rotating process.

Preferably, the two moving platforms and the roller brush move synchronously, a second motor fixedly connected with the first moving platform is arranged on the first moving platform, a first bearing is arranged on the second moving platform, one end of the roller brush is connected with the second motor, the other end of the roller brush is arranged on the first bearing, and the second motor rotates and simultaneously drives the roller brush to rotate relative to the moving platform.

The second motor can drive the roller brush to rotate relative to the moving platform when working, and the roller brush can move relative to the mold frame under the drive of the first motor; therefore, the roller brush can rotate in the process of moving relative to the mold frame, and the oiling effect of the roller brush on the mold frame can be better and more thorough.

Preferably, the limiting assemblies are arranged on the oil brushing frame in pairs and comprise blocking plates and first cylinders which are arranged in pairs, the first cylinders are fixedly arranged on the oil brushing frame, piston shafts of the first cylinders are fixedly connected with the blocking plates, and the two blocking plates on the limiting assemblies are arranged in parallel and are perpendicular to the moving direction of the mold frame.

When the mold frame is positioned right below the oil brushing frame, the first air cylinder can push the blocking plate to be close to the mold frame, and the two limiting assemblies can work simultaneously, so that the mold frame can be limited between the two blocking plates which are arranged in parallel and can be kept in a static state. The roller brush can more stably and thoroughly brush the oil to the die frame in the static state, and the oil brushing efficiency is higher.

Preferably, the lifting assembly is fixedly arranged on the oil brushing frame and is positioned below the conveying device, and the lifting assembly comprises a support plate and second cylinders arranged in pairs; the second cylinder is fixedly installed on the oil brushing frame and located below the conveying device, a piston shaft of the second cylinder is fixedly connected with the supporting plate, and the supporting plate pushes the die frame to be close to the roller brush when the second cylinder works.

When the die frame moves to the position right below the oil brushing frame, the lifting assembly starts to work; the second cylinder promotes the backup pad and is close to the lower terminal surface of mould frame, and the mould frame breaks away from conveyer and is close to the roller brush under the promotion of backup pad, and the groove of placing the cake in the mould frame is brushed and can be more thoroughly like this to the roller brush.

Preferably, the oiling device comprises an oiling frame, an edible oil tank, an oil pump, a receiving oil cavity and oil dripping pipes, wherein a plurality of oil dripping pipes are arranged below the receiving oil cavity, and the oil dripping pipes correspond to the grooves for placing cakes in the die frame one by one; the oil dripping pipes are uniformly distributed along the axial direction of the accommodating oil cavity, the tail ends of the oil dripping pipes are arranged towards the die frame, and two ends of the accommodating oil cavity are fixedly arranged on two side plates of the oiling frame respectively; the frame fixed mounting that oils is in the frame, edible oil tank and oil pump are all fixed mounting on the frame that oils, the pipeline connection is passed through with the one end of oil pump to the edible oil tank, and the other end of oil pump passes through the pipeline and accomodates the oil pocket and be connected.

When the mould frame removed under the frame that oils, the oil pump will be to the edible oil extraction in the edible oil tank to receive the oil intracavity, then edible oil can be along dripping in the recess of oil pipe drippage mould frame.

Preferably, the roller brush comprises a rolling shaft and brushes, the brushes are uniformly distributed on the surface of the rolling shaft, and the distribution positions of the brushes correspond to the grooves for placing cakes in the die frame one by one.

Preferably, the conveying device comprises a conveying motor, a driving shaft, a driven shaft, a transmission chain and transmission chain belts arranged in pairs; a mounting platform is arranged below the rack, and the conveying motor is fixedly mounted on the mounting platform; the transmission mechanism comprises a transmission motor, a transmission shaft, a driving shaft, a transmission chain, a transmission shaft and a transmission shaft, wherein the driving shaft is pivoted with two side plates of a rack; a driven shaft pivoted with the rack is arranged at the position, opposite to the driving shaft, of the tail end of the rack, transmission parts are sleeved at two ends of the driving shaft and the driven shaft respectively, and a transmission chain belt is sleeved on the outer layer of each transmission part; the driving shaft is connected with the driven shaft through a transmission chain belt, and two ends of the mold frame are placed on the surface of the transmission chain belt.

The transmission motor works to drive the driving shaft to rotate, the driving shaft is connected with the driven shaft through the transmission chain belt, and the transmission chain belt is installed on the transmission part, so that the transmission motor works to drive the transmission chain belt to move, and the transmission chain belt drives the mold frame to synchronously move when moving.

Compared with the prior art, the utility model discloses following beneficial effect has: the utility model is provided with an oiling device and an oil brushing device on the frame, wherein the oiling device and the oil brushing device are adjacently arranged; the oil brushing device is provided with a roller brush, edible oil is firstly added into the die frame by the oil brushing device, and then the edible oil on the surface of the die frame is uniformly coated by the roller brush, so that the oil brushing efficiency is high and the coating is uniform; the oil brushing device comprises moving devices which are arranged in pairs, the roller brushes are arranged between the two moving devices, the moving devices are provided with first motors, and the first motors drive the roller brushes to move relative to the mold frame; in the process that the roller brush moves relative to the mold frame, the roller brush can automatically brush edible oil in the mold frame, and the automation degree is high. Therefore, the utility model discloses degree of automation is high, and the brushing oil is even and efficient.

Drawings

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

FIG. 2 is a perspective view of the oiling device working in cooperation with the transmission device;

FIG. 3 is a perspective view of the oil brushing device and the transmission device working in cooperation;

FIG. 4 is an exploded view of the oil brushing device of FIG. 3;

FIG. 5 is an enlarged view of a portion of the portion A of FIG. 4;

FIG. 6 is a perspective view of a hidden position limiting assembly of the oil brushing device of FIG. 3;

fig. 7 is a perspective view of the roller brush.

The labels in the figure are: 1. a frame; 2. a conveying device; 21. a transfer motor; 22. a drive shaft; 23. a driven shaft; 24. a drive chain; 25. a drive chain belt; 26. a transmission member; 3. an oiling device; 31. oiling the frame; 32. an edible oil tank; 33. an oil pump; 34. an oil receiving cavity; 35. an oil dripping pipe; 4. an oil brushing device; 41. a roller brush; 411. a rolling shaft; 412. a brush; 42. a mobile device; 421. a first motor; 422. a mobile platform; 423. a first lead screw; 424. a coupling; 43. an oil brushing frame; 44. a limiting component; 441. a damming board; 442. a first cylinder; 45. a lift assembly; 451. a support plate; 452. a second cylinder; 46. a card slot; 47. a through hole; 48. a second motor; 49. a first bearing; 5. and (7) mounting the platform.

Detailed Description

The invention will be further described with reference to the embodiments shown in the drawings to which:

as shown in fig. 1 to 7, the embodiment discloses an oiling device for a cake production line, which includes a frame 1, wherein a conveying device 2 for conveying a mold frame is arranged on the frame 1, an oiling device 3 for adding edible oil into the mold frame is further arranged on the frame 1, and an oil brushing device 4 for uniformly smearing the edible oil in the mold frame is arranged at a position adjacent to the oiling device 3 on the frame 1; the oil brushing device 4 comprises a roller brush 41 and moving devices 42 arranged in pairs, the roller brush 41 is arranged between the two moving devices 42, the moving devices 42 comprise first motors 421, and the first motors 421 drive the roller brush 41 to move relative to the mold frame when working.

The oil brushing device 4 further comprises an oil brushing frame 43, a limiting component 44 and a lifting component 45; two side plates of the oil brushing frame 43, which are arranged in parallel relatively, are respectively provided with a clamping groove 46, the moving device 42 comprises moving platforms 422, a first screw rod 423, a first motor 421 and a coupling 424, each moving platform 422 is installed in the clamping groove 46 of the oil brushing frame 43, and the moving platforms 422 and the first screw rod 423 are engaged to move; the first motor 421 is fixedly installed on the oil brushing frame 43, one end of the first screw rod 423 is connected with the first motor 421 through a coupling 424, and the other end of the first screw rod 423 is connected with the oil brushing frame 43 through a bearing; the roller brush 41 is disposed between two parallel moving platforms 422, and the first motor 421 drives the first screw rod 423 to rotate, and the moving platforms 422 move relative to the first screw rod 423 in the engaging groove 46 in an engaged manner. The first motor 421 drives the first screw rod 423 to rotate, and the first screw rod 423 drives the moving platform 422 to internally engage and move in the clamping groove 46 while rotating; when the two moving platforms 422 move synchronously, the roller brush 41 is driven to move relative to the mold frame, and the edible oil in the groove of the mold frame can be automatically and uniformly coated in the moving process of the roller brush 41.

A through hole 46 is formed in the position, back to the roller brush 41, of the moving platform 422, threads meshed with the first screw rod 423 are arranged in the through hole 46, and the moving platform 422 is sleeved on the first screw rod 423. The first lead screw 423 drives the moving platform 422 to move in an engaged manner during rotation. The two moving platforms 422 and the roller brush 41 move synchronously, the first moving platform 422 is provided with a second motor 48 fixedly connected with the first moving platform 422, the second moving platform 422 is provided with a first bearing 49, one end of the roller brush 41 is connected with the second motor 48, the other end of the roller brush 41 is arranged on the first bearing 49, and the second motor 48 rotates and simultaneously drives the roller brush 41 to rotate relative to the moving platform 422. When the second motor 48 works, the roller brush 41 is driven to rotate relative to the moving platform 422, because the roller brush 41 is driven by the first motor 421 to move relative to the mold frame; therefore, the roller brush 41 can rotate during the process of moving relative to the mold frame, so that the roller brush 41 can coat the mold frame more effectively and thoroughly. The limiting assemblies 44 are arranged on the oil brushing frame 43 in pairs, each limiting assembly 44 comprises a blocking plate 441 and first air cylinders 442 which are arranged in pairs, the first air cylinders 442 are fixedly mounted on the oil brushing frame 43, piston shafts of the first air cylinders 442 are fixedly connected with the blocking plates 441, and the two blocking plates 441 on the limiting assemblies 44 are arranged in parallel and are perpendicular to the moving direction of the mold frame. When the mold frame is positioned right under the oil painting frame 43, the first cylinder 442 pushes the blocking plate 441 close to the mold frame, and the two limiting assemblies 44 operate simultaneously, so that the mold frame is confined between the two blocking plates 441 arranged in parallel and remains stationary. The roller brush 41 can brush the die frame in a static state more stably and thoroughly, and the brushing efficiency is higher. The lifting assembly 45 is fixedly arranged on the oil brushing frame 43 and is positioned below the conveying device 2, and the lifting assembly 45 comprises a support plate 451 and second air cylinders 452 arranged in pairs; the second cylinder 452 is fixedly installed on the oil brushing frame 43 and located below the conveying device 2, a piston shaft of the second cylinder 452 is fixedly connected with the support plate 451, and the support plate 451 pushes the mold frame to be close to the roller brush 41 while the second cylinder 452 works. When the mold frame moves to the position right below the oil brushing frame 43, the lifting assembly 45 starts to work; the second cylinder 452 pushes the support plate 451 to approach the lower end surface of the mold frame, and the mold frame is separated from the conveying device 2 and approaches the roller brush 41 under the pushing of the support plate 451, so that the roller brush 41 can brush the grooves for placing the cake in the mold frame more thoroughly.

The oiling device 3 comprises an oiling frame 31, an edible oil tank 32, an oil pump 33, a containing oil cavity 34 and oil dripping pipes 35, wherein a plurality of oil dripping pipes 35 are arranged below the containing oil cavity 34, and the oil dripping pipes 35 correspond to grooves for placing cakes in the mould frame one by one; the oil dripping pipes 35 are uniformly distributed along the axial direction where the receiving oil cavity 34 is located, the tail ends of the oil dripping pipes 35 are all arranged towards the mold frame, and two ends of the receiving oil cavity 34 are fixedly installed on two side plates of the oiling frame 31 respectively; oil frame 31 fixed mounting is in frame 1, edible oil tank 32 and oil pump 33 are all fixed mounting on oil frame 31, pipeline connection is passed through with the one end of oil pump 33 to edible oil tank 32, and the other end of oil pump 33 passes through the pipeline and accomodates oil pocket 34 and be connected. When the mold frame moves to the position right under the upper oil frame 31, the oil pump 33 pumps the edible oil in the edible oil tank 32 into the oil receiving cavity 34, and then the edible oil drops into the groove of the mold frame along the oil dropping pipe 35.

The roller brush 41 comprises a rolling shaft 411 and brushes 412, the brushes 412 are uniformly distributed on the surface of the rolling shaft 411, and the distribution positions of the brushes 412 correspond to the grooves for placing cakes in the die frame one by one.

The conveying device 2 comprises a conveying motor 21, a driving shaft 22, a driven shaft 23, a transmission chain 24 and transmission chain belts 25 arranged in pairs; a mounting platform 5 is arranged below the frame 1, and the conveying motor 21 is fixedly mounted on the mounting platform 5; the driving shaft 22 is pivoted with the two side plates of the rack 1, a gear is arranged in the middle of the driving shaft 22, a gear is also arranged on a motor shaft of the conveying motor 21, and the gear on the driving shaft 22 is connected with the gear on the conveying motor 21 through a transmission chain 24; a driven shaft 23 pivoted with the rack 1 is arranged at the position, opposite to the driving shaft 22, of the tail end of the rack 1, transmission parts 26 are respectively sleeved at two ends of the driving shaft 22 and the driven shaft 23, and a transmission chain belt 25 is sleeved on the outer layer of each transmission part 26; the driving shaft 22 is connected with the driven shaft 23 through a driving chain belt 25, and two ends of the mold frame are placed on the surface of the driving chain belt 25. The transmission motor 21 drives the driving shaft 22 to rotate when working, the driving shaft 22 is connected with the driven shaft 23 through the transmission chain belt 25, and the transmission chain belt 25 is installed on the transmission piece 26, so that the transmission motor 21 drives the transmission chain belt 25 to move when working, and the transmission chain belt 25 drives the mold frame to move synchronously when moving.

The specific working process of the embodiment is as follows, the mold frame is placed on the transmission chain belt 25 of the transmission device, the transmission motor 21 works to drive the transmission chain belt 25 to move, and thus the mold frame moves towards the oil feeding device 3; when the mold frame moves to the position right under the upper oil frame 31, the oil pump 33 pumps the edible oil into the oil receiving cavity 34, and then the edible oil drops into each groove of the mold frame along the oil dropping pipe 35.

After the oil dripping is finished, the mould frame can continuously move towards the oil brushing device 4; when the mold frame moves to a position just below the oil-brushing frame 43, the limiting assembly 44 and the lifting assembly 45 work synchronously. The first cylinder 442 of the spacing assembly 44 controls the position of the damming plate 441 close to the mold frame, so that the mold frame is confined between the two damming plates 441. At the same time, the second cylinder 452 of the lifting assembly 45 pushes the support plate 451 close to the mold frame, so that the mold frame is separated from the conveyor 2 and approaches the roller brush 41 under the pushing of the support plate 451.

Then, the mobile device 42 starts to work; the first motor 421 drives the first screw rod 423 to rotate, and the first screw rod 423 drives the moving platform 422 to move in an engaged manner while rotating; meanwhile, the second motor 48 on the moving platform 422 operates synchronously to drive the roller brush 41 to rotate relatively to the moving platform 422. Then, the roller brush 41 moves relative to the mold frame and rotates relative to the mold frame, so that the brush 412 on the roller brush 41 can uniformly spread the edible oil in the mold frame.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. An oiling device for a cake production line comprises a rack (1) and is characterized in that a conveying device (2) for conveying a mold frame is arranged on the rack (1), an oiling device (3) for adding edible oil into the mold frame is further arranged on the rack (1), and an oil brushing device (4) for uniformly brushing the edible oil in the mold frame is arranged at a position, adjacent to the oiling device (3), on the rack (1); the oil brushing device (4) comprises roller brushes (41) and moving devices (42) which are arranged in pairs, the roller brushes (41) are arranged between the two moving devices (42), each moving device (42) comprises a first motor (421), and the first motors (421) drive the roller brushes (41) to move relative to the mold frame when working.

2. The oiling device for cake production line according to claim 1, wherein the brushing device (4) further comprises a brushing frame (43), a limiting assembly (44) and a lifting assembly (45); the oil brushing frame is characterized in that clamping grooves (46) are respectively formed in two side plates which are arranged in parallel relatively of the oil brushing frame (43), the moving device (42) comprises moving platforms (422), first screw rods (423), a first motor (421) and a coupling (424), each moving platform (422) is installed in the clamping groove (46) of the oil brushing frame (43), and the moving platforms (422) and the first screw rods (423) move in a meshed mode; the first motor (421) is fixedly arranged on the oil brushing frame (43), one end of the first screw rod (423) is connected with the first motor (421) through a coupling (424), and the other end of the first screw rod (423) is connected with the oil brushing frame (43) through a bearing; the roller brush (41) is arranged between two moving platforms (422) which are arranged in parallel, and the moving platforms (422) move in an inner engagement manner in the clamping grooves (46) relative to the first screw rod (423) when the first motor (421) drives the first screw rod (423) to rotate.

3. The oiling device for a cake production line according to claim 2, wherein a through hole (47) is formed in a position of the moving platform (422) opposite to the roller brush (41), threads meshed with the first screw rod (423) are arranged in the through hole (47), and the moving platform (422) is sleeved on the first screw rod (423).

4. The oiling device for the cake production line according to claim 2, wherein the two moving platforms (422) and the roller brush (41) move synchronously, a second motor (48) fixedly connected with the first moving platform (422) is arranged on the first moving platform (422), a first bearing (49) is arranged on the second moving platform (422), one end of the roller brush (41) is connected with the second motor (48), the other end of the roller brush (41) is arranged on the first bearing (49), and the second motor (48) drives the roller brush (41) to rotate relative to the moving platform (422) while rotating.

5. The oiling device for a cake production line as recited in claim 2, wherein the limiting assemblies (44) are arranged in pairs on the oil brushing frame (43), the limiting assemblies (44) comprise a blocking plate (441) and first cylinders (442) arranged in pairs, the first cylinders (442) are fixedly arranged on the oil brushing frame (43), the piston shafts of the first cylinders (442) are fixedly connected with the blocking plate (441), and the two blocking plates (441) on the limiting assemblies (44) are arranged in parallel and perpendicular to the moving direction of the mould frame.

6. The oiling device for cake production line according to claim 2, wherein the lifting assembly (45) is fixedly mounted on the brushing frame (43) and located below the conveyor (2), the lifting assembly (45) comprising a support plate (451) and second cylinders (452) arranged in pairs; the second air cylinder (452) is fixedly mounted on the oil brushing frame (43) and located below the conveying device (2), a piston shaft of the second air cylinder (452) is fixedly connected with the supporting plate (451), and the supporting plate (451) pushes the mold frame to be close to the roller brush (41) when the second air cylinder (452) works.

7. The oiling device for a cake production line as defined in claim 1, wherein the oiling device (3) comprises an oiling frame (31), an edible oil tank (32), an oil pump (33), a receiving oil cavity (34) and oil dripping pipes (35), a plurality of oil dripping pipes (35) are arranged below the receiving oil cavity (34), and the oil dripping pipes (35) are in one-to-one correspondence with the grooves for placing cakes in the mould frame; the oil dripping pipes (35) are uniformly distributed along the axial direction where the accommodating oil cavity (34) is located, the tail ends of the oil dripping pipes (35) are arranged towards the mold frame, and two ends of the accommodating oil cavity (34) are fixedly arranged on two side plates of the oil applying frame (31) respectively; oil frame (31) fixed mounting is in frame (1), edible oil tank (32) and oil pump (33) are all fixed mounting on oil frame (31), pipeline connection is passed through with the one end of oil pump (33) in edible oil tank (32), and the other end of oil pump (33) passes through the pipeline and accomodates oil pocket (34) and be connected.

8. The oiling device for cake production line as recited in claim 1, wherein the roller brush (41) comprises a rolling shaft (411) and brushes (412), the brushes (412) are uniformly distributed on the surface of the rolling shaft (411), and the positions of the brushes (412) are distributed in one-to-one correspondence with the grooves for placing cakes in the mould frame.

9. The oiling device for cake production line according to claim 1, wherein the conveying device (2) comprises a conveying motor (21), a driving shaft (22), a driven shaft (23), a transmission chain (24) and transmission chain belts (25) arranged in pairs; a mounting platform (5) is arranged below the rack (1), and the conveying motor (21) is fixedly mounted on the mounting platform (5); the driving shaft (22) is pivoted with the two side plates of the rack (1), a gear is arranged in the middle of the driving shaft (22), a gear is also arranged on a motor shaft of the conveying motor (21), and the gear on the driving shaft (22) is connected with the gear on the conveying motor (21) through a transmission chain (24); a driven shaft (23) which is pivoted with the rack (1) is arranged at the position, opposite to the driving shaft (22), of the tail end of the rack (1), transmission parts (26) are respectively sleeved at two ends of the driving shaft (22) and the driven shaft (23), and a transmission chain belt (25) is sleeved on the outer layer of each transmission part (26); the driving shaft (22) is connected with the driven shaft (23) through a transmission chain belt (25), and two ends of the mold frame are placed on the surface of the transmission chain belt (25).