CN220499743U

CN220499743U - Slide rail type injection molding die spotting machine

Info

Publication number: CN220499743U
Application number: CN202322203223.5U
Authority: CN
Inventors: 纪俊维
Original assignee: Juqiang Guangzhou Machinery Co ltd
Current assignee: Juqiang Guangzhou Machinery Co ltd
Priority date: 2023-08-15
Filing date: 2023-08-15
Publication date: 2024-02-20
Anticipated expiration: 2033-08-15

Abstract

The utility model discloses a slide rail type injection molding die spotting machine, which comprises a bracket, wherein at least two die spotting devices are arranged on the bracket; the support is also provided with a sliding rail parallel to the arrangement path of each mold clamping device, the sliding rail is connected with a material injection gun in a sliding manner, and the material injection gun is provided with a translation driving device; the die assembly device comprises a base, a lower pressing plate and an upper pressing plate, wherein the upper pressing plate is in sliding fit with the base, and the upper pressing plate is connected with the base through a crank connecting rod upper die assembly driving assembly; the lower pressing plate is positioned below the upper pressing plate; a lower die assembly driving device is connected between the lower pressing plate and the base. According to the sliding rail type injection molding die spotting machine provided by the utility model, the injection gun can perform injection molding on other dies without waiting for cooling of products in the dies, so that the production efficiency of the products can be improved.

Description

Slide rail type injection molding die spotting machine

Technical Field

The utility model relates to the field of rubber sole mold closing and injection molding, in particular to a sliding rail type injection molding and mold closing machine.

Background

The rubber or plastic sole is processed and molded, after the upper die and the lower die of the die are clamped, liquid materials are injected into the inner cavity of the die, and meanwhile, the clamping force of the die is kept, so that the upper die and the lower die are prevented from being stretched due to the lifting of the inner pressure of the die. After the materials are cooled and solidified, the upper die and the lower die are opened, and the injection molded sole can be obtained. The traditional die spotting machine is directly connected with a pressing plate through a hydraulic rod of a hydraulic cylinder, and the pressing plate is used for providing die spotting force for a die. However, when the hydraulic cylinder is pressurized, the hydraulic cylinder slightly contracts, and the precision is affected; the single hydraulic cylinder can bear smaller pressure, has short service life and high replacement cost, and has small application point range, so that the problem that the clamping force of the pressing plate acting on the die is easy to be uneven is solved, and the clamping stability is reduced.

In addition, in the process from the injection molding step to the complete cooling and solidification of materials, the mold cannot be opened, and if one injection molding mechanism only works for one mold, the waiting time after each injection molding of the injection molding mechanism is too long, and the production efficiency is extremely low.

Disclosure of Invention

The utility model aims to provide a slide rail type injection mold closing machine, wherein a material injection gun can perform injection molding on other molds without waiting for cooling products in the molds, and the production efficiency of the products can be improved.

In order to achieve the above purpose, the utility model provides a slide rail type injection molding die spotting machine, which comprises a bracket, wherein at least two die spotting devices are arranged on the bracket; the support is also provided with a sliding rail parallel to the arrangement path of each mold clamping device, the sliding rail is connected with a material injection gun in a sliding manner, and the material injection gun is provided with a translation driving device; the die assembly device comprises a base, a lower pressing plate and an upper pressing plate, wherein the upper pressing plate is in sliding fit with the base, and the upper pressing plate is connected with the base through a crank connecting rod upper die assembly driving assembly; the lower pressing plate is positioned below the upper pressing plate; a lower die assembly driving device is connected between the lower pressing plate and the base.

As a further improvement of the utility model, the base comprises an upper base, a first guide rail and a lower base which are connected in sequence; the upper pressing plate is in sliding connection with the first guide rail; the die assembly driving assembly on the crank connecting rod comprises a first hydraulic cylinder arranged on the upper base, and a hydraulic rod of the first hydraulic cylinder is connected with a lifting block; the die assembly driving assembly on the crank connecting rod further comprises a first connecting rod, a crank and a second connecting rod; the lower end of the first connecting rod is hinged with the upper pressing plate, the upper end of the first connecting rod is hinged with the crank, the crank is also respectively hinged with the upper base and one end of the second connecting rod, and the other end of the second connecting rod is hinged with the edge of the lifting block.

As a further improvement of the utility model, the upper die assembly driving assembly of the crank connecting rod further comprises a second guide rail, the second guide rail is respectively in sliding fit with the upper base and the lifting block, and the second guide rail is connected with the upper pressing plate.

As a further improvement of the utility model, the number of the first guide rails is at least two, the first guide rails comprise threaded sections, and an upper pressing plate height adjusting mechanism is arranged between the threaded sections of the first guide rails and the upper base.

As a further improvement of the utility model, the height adjusting mechanism of the upper pressing plate comprises a first motor, a chain and at least two first chain wheels, wherein the first motor is arranged on the upper base, the middle part of the first chain wheel is in threaded fit with the thread section, and the second chain wheel and the first chain wheel at the output end of the first motor are both matched with the chain; the first sprocket is rotatably connected with the upper base.

As a further improvement of the utility model, a lower heating plate is connected above the lower pressing plate through a lower heat insulation plate, and an upper heating plate is connected below the upper pressing plate through an upper heat insulation plate; the lower heating plate and the upper heating plate are internally provided with an electric heating structure.

As a further improvement of the utility model, the utility model also comprises an exhaust connecting pipe connected with the upper pressing plate, one end of the exhaust connecting pipe is communicated with the vacuumizing hole of the upper heating plate, and the vacuumizing hole of the upper heating plate corresponds to a vacuumizing channel communicated with the inner cavity of the die.

As a further improvement of the utility model, the material injection gun comprises a second base, wherein the second base is provided with a feeding oil hydraulic cylinder and a material conveying cylinder which are sequentially connected, and one end of the material conveying cylinder, which is far away from the feeding oil hydraulic cylinder, is provided with a material injection opening; the middle part of the feeding oil hydraulic cylinder is provided with an oil hydraulic cylinder shaft capable of linearly and reciprocally moving relative to the feeding oil hydraulic cylinder, and the oil hydraulic cylinder shaft is provided with a piston positioned in the feeding oil hydraulic cylinder; an oil inlet and outlet is formed in one end, close to the second motor, of the feeding oil hydraulic cylinder; the second motor is installed at one end of the oil pressure cylinder shaft, the output end of the second motor is linked with the spiral conveying rod, the spiral conveying rod comprises a polish rod, a spiral conveying rod main body and a material injection head which are connected, the polish rod of the spiral conveying rod penetrates through the middle part of the oil pressure cylinder shaft, and the spiral conveying rod main body and the material injection head are both positioned in the material conveying cylinder; the material conveying cylinder is also communicated with a hopper.

As a further improvement of the utility model, a third motor is arranged on the second base, and the output end of the third motor is connected with a gear; the rack parallel to the slide rail is arranged on the bracket, and the gear is meshed with the rack; and the second base is also provided with a sliding groove which is in sliding fit with the sliding rail.

Advantageous effects

Compared with the prior art, the sliding rail type injection molding die spotting machine has the advantages that:

1. after the injection gun injects the mould placed between the upper and lower pressing plates of the first mould clamping device, the injection gun can immediately transversely move through the sliding rail to continue injection for the mould on the second mould clamping device, the cooling process of the material in the first mould can not influence the injection progress of the mould at the back, the production efficiency is greatly improved, and each mould has enough time to open the mould and take out the sole product and wait for injection next time.

2. The upper pressing plate is driven to move by the die closing driving assembly on the crank connecting rod which is linked with the first hydraulic cylinder, the connecting rods, the crank and the lifting block, so that the traditional mode of directly driving the upper pressing plate through the hydraulic cylinder is replaced. When the die is closed, the first hydraulic cylinder is pressurized, the crank is in an unbending state, and all the connecting parts are in hard connection, so that the first hydraulic cylinder can be prevented from slightly contracting, the die closing precision is not influenced by other factors, and the structural precision is ensured during part processing. In addition, the first connecting rods can be arranged in a plurality of positions and act on the upper pressing plate, so that the pressure on the upper die at each position of the upper pressing plate is more uniform, and the die assembly stability is improved. The crank connecting rod is mainly stressed, even if damaged, the replacement cost is lower, and the first hydraulic cylinder has long service life and low maintenance cost.

3. The second guide rail prevents the lifting block from tilting, and the first guide rail prevents the upper pressing plate from tilting, so that the pressure on the upper die is ensured to be more uniform everywhere.

4. When the molds with different heights are required to be clamped, the motor of the upper pressing plate height adjusting mechanism drives the chain to enable the thread sections of the first guide rails to rotate relative to the upper base so as to adjust the height of the upper base, so that the height of the upper pressing plate is adjusted, and the applicability is wide.

5. The lower heating plate and the upper heating plate are internally provided with an electric heating structure, so that after liquid materials enter the die, the die is heated through the upper heating plate and the lower heating plate, the materials are prevented from being solidified prematurely, the fluidity of the materials is ensured, and the materials can be filled in all parts of the inner cavity of the die.

6. The exhaust connecting pipe of the upper pressing plate is connected with the air pump, and the vacuum pumping channel can be used for vacuumizing the inner cavity of the die, so that the flow speed of materials in the inner cavity of the die is improved, and the materials can fill all parts of the inner cavity of the die.

The utility model will become more apparent from the following description taken in conjunction with the accompanying drawings which illustrate embodiments of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a slide injection molding machine showing only one mold clamping device;

FIG. 2 is a perspective view of the gun;

FIG. 3 is a perspective view of a mold clamping machine;

FIG. 4 is a front view of the clamping machine;

FIG. 5 is a rear view of the clamping machine;

FIG. 6 is an enlarged view at A of FIG. 3;

FIG. 7 is one of the state diagrams of the clamp drive assembly on the crank link;

FIG. 8 is a second state diagram of the clamp drive assembly on the crank link;

fig. 9 is a schematic view of the internal structure of the feed delivery cylinder.

Detailed Description

Embodiments of the present utility model will now be described with reference to the accompanying drawings.

Examples

The embodiment of the utility model is shown in fig. 1 to 9, and the slide rail type injection mold clamping machine comprises a bracket 16, wherein at least two mold clamping devices are arranged on the bracket 16. The support 16 is also provided with a slide rail 14 parallel to the arrangement path of the mold clamping devices, the slide rail 14 is connected with the injection gun 10 in a sliding way, and the injection gun 10 is provided with a translation driving device. The die assembly device comprises a base 1, a lower pressing plate 6 and an upper pressing plate 2, wherein the upper pressing plate 2 is in sliding fit with the base 1, and the upper pressing plate 2 is connected with the base 1 through a crank connecting rod upper die assembly driving assembly 3. The lower platen 6 is located below the upper platen 2. A lower die assembly driving device 7 is connected between the lower pressing plate 6 and the base 1. The lower mold closing driving device 7 is a third hydraulic cylinder.

The base 1 includes an upper base 12, a first guide rail 13, and a lower base 11, which are sequentially connected. The upper platen 2 is slidably connected to the first rail 13. The crank-link upper mold clamping drive assembly 3 includes a first hydraulic cylinder 31 mounted on the upper base 12, and a lifting block 32 is connected to a hydraulic rod of the first hydraulic cylinder 31. The crank-link upper clamp drive assembly 3 further includes a first link 34, a crank 33, and a second link 35. The lower end of the first connecting rod 34 is hinged with the upper pressing plate 2, the upper end of the first connecting rod 34 is hinged with the crank 33, the crank 33 is also respectively hinged with the upper base 12 and one end of the second connecting rod 35, and the other end of the second connecting rod 35 is hinged with the edge of the lifting block 32.

The crank connecting rod upper die assembly driving assembly 3 further comprises a second guide rail 36, the second guide rail 36 is respectively in sliding fit with the upper base 12 and the lifting block 32, and the second guide rail 36 is connected with the upper pressing plate 2.

In this embodiment, the number of lifting blocks 32 is one, and the first connecting rod 34, the crank 33 and the second connecting rod 35 are two groups and symmetrically arranged on the left and right sides of the lifting blocks 32, so that the pressing force applied to the upper pressing plate 2 is more uniform.

The number of the first guide rails 13 is at least two, the first guide rails 13 comprise threaded sections 131, and an upper pressing plate height adjusting mechanism 8 is arranged between the threaded sections 131 of the first guide rails 13 and the upper base 12. In this embodiment, the number of the first guide rails 13 is four.

The upper pressing plate height adjusting mechanism 8 comprises a first motor 82, a chain and four first chain wheels 81, wherein the first chain wheels 81 are in one-to-one correspondence with the first guide rails 13, the first motor 82 is arranged on the upper base 12, the middle part of the first chain wheels 81 is in threaded fit with the thread segments 131, and the second chain wheels and the first chain wheels 81 at the output end of the first motor 82 are matched with the chain. The first sprocket 81 is rotatably coupled to the upper base 12. When the molds with different heights are required to be clamped, the motor 81 of the upper pressing plate height adjusting mechanism 8 drives a chain (not shown in the drawing) to rotate the first sprocket 81 relative to the thread segment 131 to adjust the height of the upper base 12 due to the action of the threads so as to adjust the height of the upper pressing plate 2.

The upper part of the lower pressing plate 6 is connected with a lower heating plate through a lower heat insulation plate, and the lower part of the upper pressing plate 2 is connected with an upper heating plate through an upper heat insulation plate. The lower heating plate and the upper heating plate are internally provided with an electric heating structure. The electrothermal structure can be an electrothermal tube. After the liquid material enters the die, the lower heating plate and the upper heating plate heat the die, so that the material entering the die is prevented from being solidified prematurely, the fluidity of the material is ensured, and the material can fill all parts of the inner cavity of the die.

The die spotting machine further comprises an exhaust connecting pipe 9 connected with the upper pressing plate 2, one end of the exhaust connecting pipe 9 is communicated with a vacuumizing hole of the upper heating plate, and the vacuumizing hole of the upper heating plate is contacted with a vacuumizing channel communicated with the inner cavity of the die. A vacuum-pumping channel is arranged between the top surface of the upper die and the inner cavity of the upper die (not shown in the figure), and the vacuum-pumping channel of the die is communicated with the vacuum-pumping hole of the upper heating plate. The exhaust connecting pipe 9 of the upper pressing plate 2 is connected with an air pump (not shown in the figure), and the vacuum can be pumped into the inner cavity of the die through the vacuum pumping channel, so that the flow speed of the material in the inner cavity of the die is improved, and the material can fill all parts of the inner cavity of the die.

When the upper and lower molds of the mold are placed between the upper heating plate of the upper platen 2 and the lower heating plate of the lower platen 6, the upper heating plate is pressed above the upper mold, and the lower heating plate is supported on the bottom surface of the lower mold. The liquid material is injected into the cavity of the mold by a material injection gun (not shown) through a material injection channel arranged on one side wall of the mold. In the process of injecting liquid materials into the inner cavity of the die by the injection gun, the first hydraulic cylinder 31 of the die assembly driving assembly 3 on the crank connecting rod drives the lifting block 32 to move downwards, and the lifting block 32 drives the upper pressing plate 2 to move downwards relative to the upper base 12 through the second connecting rod 35, the crank 33 and the first connecting rod 34, so that the upper die is pressed downwards. In order to increase the mold clamping force, the upper mold and the lower mold are prevented from being opened by the internal materials, and the third hydraulic cylinder of the lower mold clamping driving device 7 drives the lower pressing plate 6 to jack up the lower mold.

The injection gun 10 comprises a second base 101, wherein a feeding oil hydraulic cylinder 103 and a feeding cylinder 102 which are sequentially connected are arranged on the second base 101, one end, far away from the feeding oil hydraulic cylinder 103, of the feeding cylinder 102 is provided with an injection port 1021, and the injection port 1021 is used for corresponding to a feeding port on each die. The middle part of the feeding hydraulic cylinder 103 is provided with a hydraulic cylinder shaft 104 capable of linearly and reciprocally moving relative to the feeding hydraulic cylinder, and the hydraulic cylinder shaft 104 is provided with a piston positioned in the feeding hydraulic cylinder 103. An oil inlet and outlet is arranged at one end of the feeding hydraulic cylinder 103, which is close to the second motor 1041.

The second motor 1041 is installed to oil pressure cylinder axle 104 one end, and the output linkage of second motor 1041 has the screw conveyer pole, and the screw conveyer pole is including polished rod, screw conveyer pole main part and the injection head that are connected, and the polished rod of screw conveyer pole passes oil pressure cylinder axle 104 middle part, and screw conveyer pole main part and injection head all are located defeated feed cylinder 102. The feed delivery cylinder 102 is also connected with a hopper 105.

Hydraulic oil is injected into one oil inlet and outlet of the feeding hydraulic cylinder 103, meanwhile, hydraulic oil is discharged from the other oil inlet and outlet of the feeding hydraulic cylinder 103, and the hydraulic oil acts on the piston to drive the hydraulic cylinder shaft 104 to drive the spiral conveying rod to synchronously move forwards or backwards.

Before the mold is required to be filled, the hydraulic oil drives the oil hydraulic cylinder shaft 104 to drive the spiral conveying rod to synchronously retreat, a space is reserved between the injection head in the material conveying cylinder 102 and the material injection port 1021, and then the second motor 1041 drives the spiral conveying rod main body to rotate. Particulate material enters the feed end of the feed cylinder 102 from the hopper 105 and is heated within the feed cylinder by an electrically heated structure disposed on the side wall of the feed cylinder. The rotating screw rod body conveys the material to the space between the shot head and the nozzle 1021, where the material has been heated to a liquid. Then, the hydraulic oil drives the oil pressure cylinder shaft 104 to drive the spiral conveying rod to synchronously advance, and the injection head approaches to the injection port 1021, so that the liquid material is injected from the injection port 1021 and enters the die.

In order to avoid material backflow when the injection head 1081 pushes materials, an anti-reverse ring 1083 and a material conveying ring 1084 are arranged between the position with the largest diameter in the middle of the injection head 1081 and the tail end of the injection head, the material conveying ring 1084 is arranged at the front end of the spiral conveying rod main body 1082, the outer wall of the anti-reverse ring 1083 is in contact with the inner wall of the material conveying barrel 102 and in sliding fit, and the inner diameter of the anti-reverse ring 1083 is smaller than the outer diameter of the material conveying ring 1084. When the head 1081 is advanced, the front side of the feed collar 1084 contacts the back side of the anti-backup collar 1083, and the material located in front of the anti-backup collar 1083 cannot flow back to the back of the anti-backup collar 1083 around the feed collar 1084 and the head 1081. When the injection head 1081 moves backward, the feeding ring 1084 moves backward a certain distance relative to the anti-reverse ring 1083, the maximum diameter of the injection head 1081 pushes the anti-reverse ring 1083 to move backward, a gap is left between the feeding ring 1084 and the anti-reverse ring 1083, and when the screw feeding rod main body 1082 rotates, the material bypasses the feeding ring 1084 and the anti-reverse ring 1083 and passes through the injection head 1081 from the material channels communicating the front end and the rear end of the injection head 1081 to the position between the front end of the injection head 1081 and the injection port 1021 to wait to be pressed into the mold.

A third motor is mounted on the second base 101, and the output end of the third motor is connected with a gear 106. The rack 15 parallel to the slide rail 14 is arranged on the bracket 16, and the gear 106 is meshed with the rack 15. The second base 101 is further provided with a sliding groove 107, and the sliding groove 107 is in sliding fit with the sliding rail 14. The third motor drives the gear 106 to enable the whole injection gun 10 to transversely move along the sliding rail 14 to correspond to the moulds on different mould clamping devices.

The utility model has been described in connection with the preferred embodiments, but the utility model is not limited to the embodiments disclosed above, but it is intended to cover various modifications, equivalent combinations according to the essence of the utility model.

Claims

1. The sliding rail type injection molding die spotting machine is characterized by comprising a bracket (16), wherein at least two die spotting devices are arranged on the bracket (16); the bracket (16) is also provided with a sliding rail (14) parallel to the arrangement path of each mold clamping device, the sliding rail (14) is connected with a material injection gun (10) in a sliding manner, and the material injection gun (10) is provided with a translation driving device; the die assembly device comprises a base (1), a lower pressing plate (6) and an upper pressing plate (2), wherein the upper pressing plate (2) is in sliding fit with the base (1), and the upper pressing plate (2) is connected with the base (1) through a crank connecting rod upper die assembly driving assembly (3); the lower pressing plate (6) is positioned below the upper pressing plate (2); a lower die assembly driving device (7) is connected between the lower pressing plate (6) and the base (1).

2. The slide-rail type injection molding machine according to claim 1, wherein the base (1) comprises an upper base (12), a first guide rail (13) and a lower base (11) which are connected in sequence; the upper pressing plate (2) is in sliding connection with the first guide rail (13); the upper die assembly driving assembly (3) of the crank connecting rod comprises a first hydraulic cylinder (31) arranged on the upper base (12), and a hydraulic rod of the first hydraulic cylinder (31) is connected with a lifting block (32); the upper die assembly driving assembly (3) of the crank connecting rod also comprises a first connecting rod (34), a crank (33) and a second connecting rod (35); the lower end of the first connecting rod (34) is hinged with the upper pressing plate (2), the upper end of the first connecting rod (34) is hinged with the crank (33), the crank (33) is also respectively hinged with the upper base (12) and one end of the second connecting rod (35), and the other end of the second connecting rod (35) is hinged with the edge of the lifting block (32).

3. The sliding rail type injection molding machine as claimed in claim 2, wherein the crank connecting rod upper mold closing driving assembly (3) further comprises a second guide rail (36), the second guide rail (36) is respectively in sliding fit with the upper base (12) and the lifting block (32), and the second guide rail (36) is connected with the upper pressing plate (2).

4. The sliding rail type injection molding machine according to claim 2, wherein the number of the first guide rails (13) is at least two, the first guide rails (13) comprise thread sections (131), and an upper pressing plate height adjusting mechanism (8) is arranged between the thread sections (131) of the first guide rails (13) and the upper base (12).

5. The sliding rail type injection molding machine as claimed in claim 4, wherein the upper platen height adjusting mechanism (8) comprises a first motor (82), a chain and at least two first chain wheels (81), the first motor (82) is installed on the upper base (12), the middle part of the first chain wheels (81) is in threaded fit with the thread segments (131), and the second chain wheels at the output end of the first motor (82) and the first chain wheels (81) are both in threaded fit with the chain; the first sprocket (81) is rotatably connected to the upper base (12).

6. The sliding rail type injection molding machine according to claim 1, wherein a lower heating plate is connected above the lower pressing plate (6) through a lower heat insulation plate, and an upper heating plate is connected below the upper pressing plate (2) through an upper heat insulation plate; the lower heating plate and the upper heating plate are internally provided with an electric heating structure.

7. The slide-rail type injection molding machine as claimed in claim 6, further comprising an exhaust connecting pipe (9) connected to the upper platen (2), wherein one end of the exhaust connecting pipe (9) is communicated with a vacuum hole of the upper heating plate, and the vacuum hole of the upper heating plate corresponds to a vacuum channel communicated with the inner cavity of the mold.

8. The sliding rail type injection molding machine according to claim 1, wherein the injection gun (10) comprises a second base (101), the second base (101) is provided with a feeding hydraulic cylinder (103) and a feeding cylinder (102) which are sequentially connected, and one end, far away from the feeding hydraulic cylinder (103), of the feeding cylinder (102) is provided with a material injection port (1021); the middle part of the feeding hydraulic cylinder (103) is provided with a hydraulic cylinder shaft (104) capable of linearly and reciprocally moving relative to the feeding hydraulic cylinder, and the hydraulic cylinder shaft (104) is provided with a piston positioned in the feeding hydraulic cylinder (103); a second motor (1041) is arranged at one end of the oil pressure cylinder shaft (104), the output end of the second motor (1041) is linked with a spiral conveying rod, the spiral conveying rod comprises a polish rod, a spiral conveying rod main body and a material injection head which are connected, the polish rod of the spiral conveying rod penetrates through the middle part of the oil pressure cylinder shaft (104), and the spiral conveying rod main body and the material injection head are both positioned in a material conveying cylinder (102); a hopper (105) is also communicated with the material conveying cylinder (102); and an oil inlet and outlet is arranged at one end of the feeding oil hydraulic cylinder (103) close to the second motor (1041).

9. The slide rail type injection molding machine according to claim 8, wherein a third motor is mounted on the second base (101), and an output end of the third motor is connected with a gear (106); a rack (15) parallel to the slide rail (14) is arranged on the bracket (16), and a gear (106) is meshed with the rack (15); the second base (101) is also provided with a chute (107), and the chute (107) is in sliding fit with the slide rail (14).