Tray transfer device

Abstract

The application belongs to the technical field of electronic product coating, and discloses a tray transfer device, which comprises a rack, an adjusting seat, a supporting mechanism, a clamping mechanism, a transfer mechanism and a jacking mechanism. Multiple processing positions are equidistantly and spacedly arranged on the top of the rack along the X-axis direction, and each processing position is provided with an adjusting seat. The supporting mechanism is fixedly arranged in the interior of the rack. The clamping mechanism is carried on the supporting mechanism and comprises multiple clamping assemblies equidistantly and spacedly arranged along the X-axis direction, which are used for clamping the tray. The transfer mechanism is fixedly arranged in the interior of the rack, the jacking mechanism is connected to the output end of the transfer mechanism, the transfer mechanism is used for driving the jacking mechanism to move along the X-axis direction, the jacking mechanism is located below the clamping mechanism, and the jacking mechanism can jacking the clamping mechanism along the Z-axis direction. The tray transfer device can improve the degree of automation and reduce the labor cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic product coating technology, and particularly relates to a tray transfer device. BACKGROUND

[0002] With the popularity of electronic products and the improvement of people's material living standards, more and more users use various electronic products, such as mobile phones, watches and tablet computers.

[0003] As an important component of electronic products, the display screen needs to be pasted with a film during production. There are two ways of pasting the film. The first way is that a pasting mechanism directly pastes the adhesive paper on the surface of the display screen. The second way is that the pasting mechanism first pastes the adhesive paper on a tray, and then places the display screen in the tray so that the display screen is attached to the adhesive paper in the tray. The first way of pasting the film is easy to scratch the surface of the display screen by the pasting mechanism. Therefore, in the automatic coating production line, the second way of pasting the film is usually adopted. The second way of pasting the film requires a transfer device to carry the tray to the lower side of the pasting mechanism, and the pasting mechanism pastes the adhesive paper on the tray. However, the existing transfer device usually uses a belt to convey the tray. When the belt conveys the tray to the lower side of the pasting mechanism, a worker needs to lift the tray so that the tray is temporarily separated from the pasting mechanism. However, in the same production line, the pasting mechanism is provided with at least three pasting mechanisms for pasting long-side adhesive, short-side adhesive and back adhesive respectively. Therefore, at least three workers need to stand beside the pasting mechanism, which is high in labor cost and high in labor intensity of the workers.

[0004] Therefore, there is an urgent need for a tray transfer device to improve the automation degree and reduce the labor cost. SUMMARY

[0005] An object of the present application is to provide a tray transfer device to improve the automation degree and reduce the labor cost.

[0006] To achieve the above object, the present application adopts the following technical scheme:

[0007] A tray transfer device comprises:

[0008] A rack, a plurality of processing positions are equidistantly arranged on the top of the rack along the X-axis direction, each processing position is provided with an adjusting seat, and the adjusting seat is used for carrying a tray;

[0009] A supporting mechanism is fixedly arranged in the interior of the rack;

[0010] A clamping mechanism is carried on the supporting mechanism, the clamping mechanism comprises a plurality of clamping components which are equidistantly arranged along the X-axis direction, the distance between two adjacent processing positions is equal to the distance between two adjacent clamping components, and the clamping component is used for clamping the tray.

[0011] A moving mechanism is fixedly arranged in the inside of the frame, and a jacking mechanism is connected to the output end of the moving mechanism, the moving mechanism is used to drive the jacking mechanism to move along the X-axis direction, the jacking mechanism is located below the clamping mechanism, and the jacking mechanism can jack the clamping mechanism along the Z-axis direction.

[0012] As an optional technical solution, the top of the frame is provided with a moving channel along the X-axis direction, the support mechanism, the clamping mechanism, the moving mechanism and the jacking mechanism are all located at the bottom of the moving channel, and the adjusting seat is arranged on both sides of the moving channel, and the adjusting seat can be adjusted in the installation position on the frame along the Y-axis direction.

[0013] As an optional technical solution, the support mechanism comprises a support assembly, the support assembly comprises a support table and a limiting column, the limiting column is arranged on the support table, the clamping mechanism further comprises a support beam, a limiting groove is formed in the bottom of the support beam along the X-axis direction, the support table is used to bear the support beam, and the limiting column is inserted into the limiting groove.

[0014] As an optional technical solution, the support mechanism further comprises a first support plate, the first support plate is fixedly connected with the frame, and the first support plate is provided with the support assembly at the first end and the last end along the X-axis direction.

[0015] As an optional technical solution, the moving mechanism comprises a rotary motor and a screw nut assembly, the output end of the rotary motor is in transmission connection with the jacking mechanism through the screw nut assembly.

[0016] As an optional technical solution, the support mechanism is provided as two, one jacking mechanism is arranged on each support mechanism, the two jacking mechanisms are connected through a traction plate, and the moving mechanism is provided as one, and the output end of the moving mechanism is connected with one of the jacking mechanisms.

[0017] As an optional technical solution, the jacking mechanism comprises a second support plate, a jacking cylinder and a jacking plate, the second support plate is connected with the output end of the moving mechanism, the jacking cylinder is installed on the second support plate, the jacking plate is installed on the output end of the jacking cylinder, and the jacking cylinder drives the jacking plate to support the clamping mechanism along the Z-axis direction.

[0018] As an optional technical solution, the jacking plate is provided with a positioning column, the bottom of the clamping mechanism is provided with a positioning groove, and the positioning column is used to be inserted into the positioning groove.

[0019] As an optional technical solution, the jacking mechanism further comprises a guide column and a linear bearing, the guide column is installed on the second support plate, the linear bearing is sleeved on the outer periphery of the guide column, and the jacking plate is fixedly connected with the linear bearing.

[0020] As an optional technical solution, the clamping assembly comprises a bearing table, a limiting seat and a clamping cylinder, the limiting seat and the clamping cylinder are respectively arranged at the front and rear ends of the bearing table along the X-axis direction, the output end of the clamping cylinder is provided with a conical clamping block, the bearing table is used for bearing the tray, the clamping cylinder can drive the conical clamping block to insert into the conical notch of the tray, and the limiting seat is used for abutting against the rear end of the tray.

[0021] The present application has the advantages that:

[0022] The present application provides a tray transfer device, which comprises a rack, an adjusting seat, a supporting mechanism, a clamping mechanism, a transfer mechanism and a jacking mechanism, the adjusting seat bears the tray at a machining position, a machining device such as a gluing mechanism glues the tray at the machining position, when the gluing mechanism glues the tray, the tray is subjected to the action force applied by the gluing mechanism, the tray is clamped by the clamping assembly in the clamping mechanism, so that the tray is prevented from deviating from the machining position during gluing, after gluing is completed, the jacking mechanism jacks up the clamping mechanism, the plurality of clamping assemblies in the clamping mechanism drive the trays clamped thereby to move upward along the Z-axis direction, the trays are separated from the adjusting seat, then the transfer mechanism drives the jacking mechanism to move along the X-axis direction, so that the trays are transferred to the next machining position, in the process of carrying the trays, the clamping assemblies still clamp the trays, so that the trays are prevented from being separated from the clamping assemblies, when the clamping assemblies move to the right above the next machining position, the transfer mechanism temporarily stops driving the jacking mechanism, the jacking mechanism drives the clamping mechanism to move downward, the clamping assemblies place the trays on the corresponding machining positions, the trays are supported by the adjusting seats on the machining positions, then the transfer mechanism returns the jacking mechanism and the clamping mechanism to the previous machining position in the reverse direction of the X-axis, the clamping assemblies clamp the trays on the machining position again, after the gluing mechanism glues the trays, the jacking mechanism drives the clamping mechanism to move upward, and the carrying work is repeated. BRIEF DESCRIPTION OF DRAWINGS

[0023] The present application will be further described in detail below according to the drawings and embodiments;

[0024] Figure 1 The first perspective view of the tray transfer device described in the embodiments;

[0025] Figure 2 The right view of the tray transfer device described in the embodiments;

[0026] Figure 3 The front sectional view of the tray transfer device described in the embodiments;

[0027] Figure 4 Assembly view of the support mechanism and the transfer mechanism described in the embodiment;

[0028] Figure 5 Structure schematic view of the clamping assembly described in the embodiment;

[0029] Figure 6 Structure schematic view of the jacking mechanism described in the embodiment.

[0030] In the figure:

[0031] 100, tray;

[0032] 1, rack; 11, transfer channel;

[0033] 2, adjusting seat;

[0034] 3, support mechanism; 31, support assembly; 311, support table; 32, first support plate;

[0035] 4, clamping mechanism; 41, clamping assembly; 411, bearing table; 412, limiting seat; 413, clamping cylinder; 414, conical clamping block; 42, support beam; 421, limiting groove;

[0036] 5, transfer mechanism; 51, rotary motor; 52, screw nut assembly;

[0037] 6, jacking mechanism; 61, second support plate; 62, jacking cylinder; 63, jacking plate; 64, guide column; 65, linear bearing;

[0038] 7, traction plate. DETAILED DESCRIPTION

[0039] In order to make the technical problems solved by the present application, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present application will be further described in detail below with reference to the drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0040] In the description of the present application, unless specifically defined and limited otherwise, the terms "connected", "connected to", "fixed", "fixed to" should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0041] In the present application, unless specifically defined and limited otherwise, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "over" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher in horizontal height than the second feature. The first feature "under", "below" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower in horizontal height than the second feature.

[0042] In the description herein, it should be understood that the terms "up", "down", "left", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, and is only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", are only used to distinguish in the description, and have no special meaning.

[0043] In the description of the present application, the description referring to the terms "an embodiment", "an example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0044] The technical solutions of the present application will be further illustrated below by specific embodiments in conjunction with the drawings.

[0045] As Figures 1 to 6As shown, the embodiment provides a tray transfer device, which comprises a rack 1, an adjusting seat 2, a supporting mechanism 3, a clamping mechanism 4, a transfer mechanism 5 and a jacking mechanism 6. The top of the rack 1 is provided with a plurality of processing positions equidistantly spaced along the X-axis direction. Each processing position is provided with an adjusting seat 2 for carrying a tray 100. The supporting mechanism 3 is fixedly arranged in the interior of the rack 1. The clamping mechanism 4 is carried on the supporting mechanism 3 and comprises a plurality of clamping assemblies 41 equidistantly spaced along the X-axis direction. The distance between two adjacent processing positions is equal to the distance between two adjacent clamping assemblies 41. The clamping assemblies 41 are used for clamping the tray 100. The transfer mechanism 5 is fixedly arranged in the interior of the rack 1. The jacking mechanism 6 is connected to the output end of the transfer mechanism 5. The transfer mechanism 5 is used for driving the jacking mechanism 6 to move along the X-axis direction. The jacking mechanism 6 is located below the clamping mechanism 4 and can jack the clamping mechanism 4 along the Z-axis direction.

[0046] Specifically, the adjusting seat 2 carries the tray 100 at the processing position. A processing device such as a gluing mechanism glues the tray 100 at the processing position. When the gluing mechanism glues the tray 100, the tray 100 is subjected to the force applied by the gluing mechanism. The embodiment clamps the tray 100 by the clamping assemblies 41 in the clamping mechanism 4 to avoid the tray 100 from deviating from the processing position during gluing. After gluing is completed, the jacking mechanism 6 jacks the clamping mechanism 4. The plurality of clamping assemblies 41 in the clamping mechanism 4 drive the trays 100 clamped thereby to move upward along the Z-axis direction. The trays 100 are separated from the adjusting seat 2. Then the transfer mechanism 5 drives the jacking mechanism 6 to move along the X-axis direction, so as to transfer the trays 100 to the next processing position. In the process of carrying the trays 100, the clamping assemblies 41 still clamp the trays 100 to avoid the trays 100 from being separated from the clamping assemblies 41. When the clamping assemblies 41 move to directly above the next processing position, the transfer mechanism 5 pauses to drive the jacking mechanism 6. The jacking mechanism 6 drives the clamping mechanism 4 to descend. The clamping assemblies 41 place the trays 100 on the corresponding processing positions. The trays 100 are supported by the adjusting seat 2 on the processing position. Then the transfer mechanism 5 returns the jacking mechanism 6 and the clamping mechanism 4 to the previous processing position along the reverse direction of the X-axis. The clamping assemblies 41 clamp the trays 100 on the processing position again. After the gluing mechanism glues the trays 100, the jacking mechanism 6 drives the clamping mechanism 4 to ascend. The carrying work is repeated. The tray transfer device of the embodiment is used in cooperation with the processing device such as the gluing mechanism. No mechanical arm is needed to be additionally arranged, so as to reduce the cost. The clamping mechanism 4, the transfer mechanism 5 and the jacking mechanism 6 for jacking and carrying are arranged below the processing position. The space above the processing position is not occupied by the clamping mechanism 4, the transfer mechanism 5 and the jacking mechanism 6, so as to ensure that the gluing mechanism has sufficient action space and improve the gluing processing efficiency. After the jacking mechanism 6 descends and is separated from the clamping mechanism 4, the clamping mechanism 4 is supported by the supporting mechanism 3.

[0047] In the embodiment, the top of the rack 1 is provided with a transfer channel 11 along the X-axis direction, the support mechanism 3, the clamping mechanism 4, the transfer mechanism 5 and the jacking mechanism 6 are located at the bottom of the transfer channel 11, and the two sides of the transfer channel 11 are provided with the adjusting seat 2 which can be adjusted in the installation position on the rack 1 along the Y-axis direction. Each processing position is provided with four adjusting seats 2, which improves the bearing stability of the tray 100, and the adjusting seat 2 can be adjusted along the Y-axis direction, so as to bear the tray 100 of different width specifications and expand the application range.

[0048] Optionally, the support mechanism 3 comprises a support assembly 31, the support assembly 31 comprises a support table 311 and a limiting column, the limiting column is arranged on the support table 311, the clamping mechanism 4 further comprises a support beam 42, the bottom of the support beam 42 is provided with a limiting groove 421 along the X-axis direction, the support table 311 is used for bearing the support beam 42, and the limiting column is inserted into the limiting groove 421. After the clamping mechanism 4 is jacked away from the support table 311, one end of the limiting column is still inserted into the limiting groove 421, the limiting column plays a guiding role in the process that the clamping mechanism 4 moves along the X-axis direction, and when the clamping mechanism 4 is subjected to the force in the Y-axis direction, the limiting column can ensure that the clamping mechanism 4 does not deviate in the Y-axis direction. The limiting column adopts an existing conventional cylinder, and the specific structure is not shown.

[0049] Optionally, the support mechanism 3 further comprises a first support plate 32, the first support plate 32 is fixedly connected with the rack 1, and the first support plate 32 is provided with the support assembly 31 at the first end and the last end along the X-axis direction. Two support assemblies 31 are arranged on the first support plate 32, two limiting columns are inserted into the limiting grooves 421 of the support beams 42, and it is ensured that the clamping mechanism 4 does not deviate from the preset moving path.

[0050] Optionally, the transfer mechanism 5 comprises a rotary motor 51 and a screw nut assembly 52, and the output end of the rotary motor 51 is in transmission connection with the jacking mechanism 6 through the screw nut assembly 52. The screw nut assembly 52 adopts an existing screw nut pair, and the moving range of the clamping mechanism 4 along the X-axis direction is improved.

[0051] Optionally, a sliding rail and sliding block module is arranged between the first support plate 32 and the jacking mechanism 6, and the jacking mechanism 6 slides on the first support plate 32 along the X-axis direction through the sliding rail and sliding block module.

[0052] In the embodiment, the support mechanism 3 is provided as two, one jacking mechanism 6 is arranged on each support mechanism 3, the two jacking mechanisms 6 are connected through the traction plate 7, and the output end of the transfer mechanism 5 is connected with one of the jacking mechanisms 6.

[0053] Specifically, the rack 1 is provided with three processing positions, and each processing position corresponds to a rubberizing mechanism. The first rubberizing mechanism is used for pasting long-side rubber on the tray 100 at the first processing position, the second rubberizing mechanism is used for pasting short-side rubber on the tray 100 at the second processing position, and the third rubberizing mechanism is used for pasting back rubber on the tray 100 at the third processing position. The overall weight of the clamping mechanism 4 is large, and therefore, two jacking mechanisms 6 are used to jackingly support the clamping mechanism 4, safety is ensured, the two jacking mechanisms 6 are connected by using a traction plate 7, and one transfer mechanism 5 can be used to drive the two jacking mechanisms 6 to move synchronously along the X axis, and the cost is reduced.

[0054] In some embodiments, the clamping mechanism 4 includes four clamping assemblies 41, and in some other embodiments, the clamping mechanism 4 includes five clamping assemblies 41.

[0055] Optionally, the jacking mechanism 6 includes a second support plate 61, a jacking cylinder 62 and a jacking plate 63. The second support plate 61 is connected with the output end of the transfer mechanism 5, the jacking cylinder 62 is installed on the second support plate 61, and the jacking plate 63 is installed on the output end of the jacking cylinder 62. The jacking cylinder 62 drives the jacking plate 63 to support the clamping mechanism 4 along the Z axis direction.

[0056] Optionally, the jacking plate 63 is provided with a positioning column, and the bottom of the clamping mechanism 4 is provided with a positioning groove. The positioning column is used for inserting into the positioning groove. The clamping mechanism 4 has a large weight, and in order to improve the rubberizing speed, the driving speed of the transfer mechanism 5 is required to be fast, which causes the inertia of the driving wheel of the clamping mechanism 4 to be large. Sudden start or sudden stop may cause the clamping mechanism 4 to be separated from the jacking plate 63. Therefore, in this embodiment, when the jacking plate 63 supports the clamping mechanism 4, the positioning column is inserted into the positioning groove of the clamping mechanism 4, so as to avoid the clamping mechanism 4 from being separated from the jacking plate 63 during the process of carrying the tray 100. The positioning column adopts an existing conventional cylinder, and the specific mechanism is not shown.

[0057] Optionally, the jacking mechanism 6 further includes a guide column 64 and a linear bearing 65. The guide column 64 is installed on the second support plate 61, and the linear bearing 65 is sleeved on the outer periphery of the guide column 64. The jacking plate 63 is fixedly connected with the linear bearing 65. The guide column 64 and the linear bearing 65 cooperate to avoid the jacking plate 63 from deviating from the preset moving path.

[0058] Optionally, the clamping assembly 41 comprises a bearing table 411, a limiting seat 412 and a clamping cylinder 413, the limiting seat 412 and the clamping cylinder 413 are respectively arranged at the front and back ends of the bearing table 411 along the X-axis direction, the output end of the clamping cylinder 413 is provided with a conical clamping block 414, the bearing table 411 is used for bearing the tray 100, the clamping cylinder 413 can drive the conical clamping block 414 to insert into the conical notch of the tray 100, and the limiting seat 412 is used for abutting against the rear end of the tray 100. The conical clamping block 414 is embedded into the conical notch of the tray 100, so that the stability of clamping the tray 100 is improved.

[0059] In addition, the above are only the preferred embodiments of the present application and the applied technical principles. Those skilled in the art will understand that the present application is not limited to the specific embodiments described herein, and those skilled in the art can make various obvious changes, readjustments and substitutions without departing from the protection scope of the present application. Therefore, although the present application has been described in more detail through the above embodiments, the present application is not limited to the above embodiments, and can include more other equivalent embodiments without departing from the concept of the present application, and the scope of the present application is determined by the scope of the appended claims.

Claims

1. A tray transfer device characterized by comprising: The utility model relates to a kind of automatic tray transfer device, including: Rack (1), the top of the rack (1) is equidistantly spaced along the X-axis direction and is provided with a plurality of processing sites, each of the processing sites is provided with an adjusting seat (2), the adjusting seat (2) is used to carry tray (100); Supporting mechanism (3), fixedly arranged in the inside of the rack (1); Clamping mechanism (4), carried on the supporting mechanism (3), the clamping mechanism (4) includes a plurality of clamping components (41) equidistantly arranged along the X-axis direction, the distance between adjacent two processing sites is equal to the distance between adjacent two clamping components (41), the clamping component (41) is used to clamp the tray (100); Transfer mechanism (5) and jacking mechanism (6), the transfer mechanism (5) is fixedly arranged in the inside of the rack (1), the jacking mechanism (6) is connected to the output end of the transfer mechanism (5), the transfer mechanism (5) is used to drive the jacking mechanism (6) moves along the X-axis direction, the jacking mechanism (6) is below the clamping mechanism (4), the jacking mechanism (6) can lift the clamping mechanism (4) along Z-axis direction; The top of the rack (1) is provided with transfer channel (11) along the X-axis direction, the supporting mechanism (3), the clamping mechanism (4), transfer mechanism (5) and jacking mechanism (6) are all located at the bottom of the transfer channel (11), the two sides of the transfer channel (11) are provided with the adjusting seat (2), the adjusting seat (2) can be adjusted along Y-axis direction and installed on the rack (1) position; The supporting mechanism (3) includes support component (31), the support component (31) includes support table (311) and limiting column, the limiting column is arranged on the support table (311), the clamping mechanism (4) further includes support beam (42), the bottom of the support beam (42) is provided with limiting slot (421) along the X-axis direction, the support table (311) is used to carry the support beam (42), the limiting column is inserted in the limiting slot (421); The jacking mechanism (6) includes second support plate (61), jacking cylinder (62) and jacking plate (63), the second support plate (61) is connected with the output end of the transfer mechanism (5), the jacking cylinder (62) is installed on the second support plate (61), the jacking plate (63) is installed on the output end of the jacking cylinder (62), the jacking cylinder (62) drives the jacking plate (63) and props up the clamping mechanism (4) along Z-axis direction; The jacking plate (63) is provided with positioning column, the bottom of the clamping mechanism (4) is provided with positioning slot, the positioning column is used to insert the positioning slot.

2. The tray transfer device according to claim 1, characterized by The supporting mechanism (3) further includes first support plate (32), the first support plate (32) is fixedly connected with the rack (1), the first support plate (32) is provided with the support component (31) at the first and last ends along the X-axis direction.

3. The tray transfer device according to claim 1, characterized by The transfer mechanism (5) comprises a rotary motor (51) and a screw nut assembly (52), and the output end of the rotary motor (51) is drivingly connected with the jacking mechanism (6) through the screw nut assembly (52).

4. The tray transfer device according to claim 1 or 3, characterized by The support mechanism (3) is provided in two, each of the support mechanisms (3) is provided with one jacking mechanism (6), the two jacking mechanisms (6) are connected through a traction plate (7), and the transfer mechanism (5) is provided in one, and the output end of the transfer mechanism (5) is connected with one of the jacking mechanisms (6).

5. The tray transfer device according to claim 1, characterized by The jacking mechanism (6) further comprises a guide column (64) and a linear bearing (65), the guide column (64) is installed on the second support plate (61), and the linear bearing (65) is sleeved on the outer periphery of the guide column (64), and the jacking plate (63) is fixedly connected with the linear bearing (65).

6. The tray transfer device according to claim 1, characterized by The clamping assembly (41) comprises a bearing table (411), a limiting seat (412) and a clamping cylinder (413), the limiting seat (412) and the clamping cylinder (413) are respectively arranged at the front and rear ends of the bearing table (411) along the X-axis direction, the output end of the clamping cylinder (413) is provided with a conical clamping block (414), the bearing table (411) is used for bearing the tray (100), the clamping cylinder (413) can drive the conical clamping block (414) to be inserted into the conical notch of the tray (100), and the limiting seat (412) is used for abutting against the rear end of the tray (100).

Images