Anti-collision assembly of printing trolley

Abstract

The invention relates to an anti-collision assembly of a printing trolley. The printing trolley anti-collision assembly comprises a mounting box body, a collision plate mechanism, a reset mechanism and a photoelectric switch. The collision plate mechanism comprises a collision plate and a trigger plate; two ends of the collision plate are coaxially hinged to the left and right inner walls of the mounting box body; the trigger plate extends upwards from the top of the collision plate; the photoelectric switch is matched with the upper end of the trigger plate; the reset mechanism comprises a fixed column, a swing column and a reset spring; the fixed column is arranged right above the hinged position of the collision plate and the mounting box body; the swing column is connected with the middle of the trigger plate; the axis of the swing column and the hinged axis of the collision plate and the mounting box body are coplanar; the collision plate is parallel to the plane; the reset spring is connected with the middle of the fixed column and the middle of the swing column. The photoelectric switch is used, so that the device is more sensitive; when the telescopic amount of the reset spring is minimum, the hinged position of the collision plate and the mounting box body, the swing column and the fixed column are on the same vertical plane, and the collision plate is in a vertical state and is also in a most stable state; the collision plate can be prevented from being excessively reset, and it is guaranteed that the collision plate is reset in place.

Description

Technical Field

[0001] The invention relates to the technical field of printing equipment accessories, in particular to an anti-collision component of a printing carriage. Background Art

[0002] The print carriage anti-collision component is an essential accessory for inkjet printing equipment. Its main functional components are the striker plate, sensor and reset spring. Under normal circumstances, the lower end of the striker plate is slightly raised outward; when the print carriage encounters obstacles or debris, the obstacles or debris press against the lower end of the striker plate, causing the lower end of the striker plate to swing inward; the striker plate with the lower end swinging inward triggers the sensor again, causing the sensor to generate a control electrical signal, causing the print carriage to brake in time. When the obstacle or debris is removed, the reset spring acts on the striker plate to restore the striker plate to the state where the lower end of the striker plate is raised outward. However, the degree of the lower end of the striker plate being raised outward can easily be pulled excessively by the reset spring, causing the gap between the lower end of the striker plate and the printing medium to exceed the designed size; some lower obstacles or debris are missed and cannot hit the lower end of the striker plate, causing the print carriage anti-collision component to take effect. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned problem and provide an anti-collision component for a printing carriage.

[0004] The technical solution of the present invention is: a printing carriage anti-collision component includes an installation box body, a collision plate mechanism, a reset mechanism, and a photoelectric switch; the front and bottom surfaces of the installation box body are open to accommodate the collision plate mechanism and the reset mechanism; the collision plate mechanism is used to resist against obstacles or debris and trigger the photoelectric switch; the conventional printing carriage anti-collision component uses a touch-type microswitch, which requires the collision plate to resist against the contact of the microswitch; the contact of the microswitch also requires a certain deformation to trigger the microswitch; the photoelectric switch used in the present invention only needs the swing of the collision plate to generate an electrical signal; so the present invention is more sensitive than the conventional printing carriage anti-collision component; the reset mechanism is used to pull the collision plate mechanism to reset after removing obstacles or debris; the back of the installation box body is connected to the printing carriage; the collision plate mechanism includes a connected collision plate and a trigger plate; the two ends of the collision plate are coaxially hinged with the inner walls on the left and right sides of the installation box body, so that it can swing vertically; the trigger plate moves from the collision plate The top extends upward and can move with the impact plate; the photoelectric switch is installed on the top inner wall of the installation box body and cooperates with the upper end of the trigger plate; the impact plate cooperates with obstacles or debris; the trigger plate moves and cooperates with the photoelectric sensor; the reset mechanism includes a fixed column, a swing column, and a reset spring; the fixed column is arranged just above the hinged position of the impact plate and the installation box body and is connected to the installation box body; the swing column is connected to the middle of the trigger plate; the axis of the swing column and the hinged axis of the impact plate and the installation box body are in the same plane; the impact plate is arranged parallel to the plane; the reset spring is respectively connected to the middle of the fixed column and the middle of the swing column; the reset spring is a tension spring, and when its expansion and contraction is the smallest, the hinged position of the impact plate and the installation box body, the swing column, and the fixed column are in the same vertical plane, and the impact plate is in a vertical state; the elastic force of the reset spring is also used to resist the swing of the impact plate; so the impact plate of the present invention will not be over-reset, and can ensure that the impact plate is completely reset into place.

[0005] Preferably, the impact plate mechanism also includes a reinforcement box body and connecting screws; the top and front of the reinforcement box body are open; the trigger plate extends upward from one side of the reinforcement box body; connecting ear plates are provided on both sides of the front end of the reinforcement box body; the impact plate is arranged on the front side of the reinforcement box body and connected to the connecting ear plates through connecting screws; the reinforcement box body is used to strengthen the structural strength of the impact plate to ensure that the impact plate is stable and effective.

[0006] Furthermore, a hinge column extends outward from the side of the reinforcement box body; the outer end of the hinge column penetrates the side wall of the installation box body and rotates with the installation box body; the hinge column frees up enough space for the installation of the swing column.

[0007] Preferably, the trigger plate includes a vertical plate A, a vertical plate, and a vertical plate B connected in sequence; the two ends of the vertical plate are respectively vertically connected to the vertical plate A and the vertical plate B; the swing column is arranged at the upper end of the vertical plate B; such a trigger plate can avoid the fixed column and the reset spring.

[0008] Preferably, the reset mechanism also includes a rubber sleeve; the rubber sleeve is sleeved on the middle part of the fixed column and the middle part of the swing column; a connecting ring is provided at the end of the reset spring; the connecting rings at both ends of the reset spring are respectively connected to the middle part of the fixed column and the middle part of the swing column; the rubber sleeve can improve the connection stability between the reset spring and the fixed column and the swing column.

[0009] Preferably, vertical long installation holes are symmetrically provided on the back side of the installation box body to facilitate connection with the printing carriage.

[0010] Preferably, the printing carriage anti-collision assembly also includes a side cover plate; the side cover plate is arranged directly above the collision plate and connected to the upper part of the installation box body to protect the collision plate mechanism and the reset mechanism inside the installation box body.

[0011] Furthermore, the side cover plate is provided with a mounting hole corresponding to the mounting long hole; a tool can be inserted into the mounting hole to connect the printing carriage anti-collision assembly with the printing carriage.

[0012] Furthermore, the upper edge of the side cover is provided with an inward flange; the printing carriage anti-collision assembly also includes a mounting screw; the mounting screw passes through the flange and cooperates with the top thread of the mounting box body; the flange can facilitate the installation of the mounting screw.

[0013] Furthermore, an inward groove is provided at the lower front part of the installation box body; the side cover plate is installed at the upper front part of the installation box body; and the collision plate is installed in the groove to avoid interference with the side cover plate.

[0014] Preferably, a wire hole is provided on the back of the installation box body for passing wires connected to the photoelectric sensor.

[0015] The beneficial effects of the present invention are as follows: the printing carriage anti-collision assembly of the present invention has the following advantages: (1) The present invention uses a photoelectric switch, which can generate an electrical signal only when the striker plate swings, and is more sensitive than the conventional print carriage anti-collision component; when the resetting spring has the smallest expansion and contraction amount, the striker plate and the hinged position of the mounting box body, the swing column, and the fixed column are on the same vertical plane, and the striker plate is in a vertical state; the elastic force of the resetting spring is also used to resist the swing of the striker plate; therefore, the striker plate of the present invention will not be over-reset, and can ensure that the striker plate is completely reset into place; (2) The rubber sleeve of the present invention can improve the connection stability between the return spring and the fixed column and the swing column. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structure of the anti-collision component of the printing trolley of the present invention. Figure 1 ; Figure 2 It is a three-dimensional structure of the anti-collision component of the printing trolley of the present invention. Figure 2 ; Figure 3 yes Figure 1 The three-dimensional image after the side cover is removed; Figure 4 yes Figure 3 The main view of Figure 5 yes Figure 4 AA section view; Figure 6 yes Figure 4 BB cross-sectional view; Figure 7 yes Figure 5 CC section view; Figure 8 It is a three-dimensional diagram of the striker mechanism; In the figure: 1. Installation box body, 11. Installation long hole, 12. Groove, 13. Wire hole, 21. Strike plate, 22. Trigger plate, 221. Vertical plate A, 222. Vertical plate, 223. Vertical plate B, 23. Reinforcement box body, 231. Connecting ear plate, 232. Articulated column, 24. Connecting screw, 31. Fixed column, 32. Swing column, 33. Reset spring, 331. Connecting ring, 34. Rubber sleeve, 4. Photoelectric switch, 5. Side cover, 51. Installation hole, 52. Flanging, 6. Installation screw. DETAILED DESCRIPTION

[0017] Example 1: See Figure 1-8, a printing carriage anti-collision assembly comprises an installation box body 1, a collision plate mechanism, a reset mechanism, and a photoelectric switch 4; the front and bottom surfaces of the installation box body 1 are opened to accommodate the collision plate mechanism and the reset mechanism; the collision plate mechanism is used to resist obstacles or debris and trigger the photoelectric switch 4; the conventional printing carriage anti-collision assembly uses a touch-type microswitch, which requires the collision plate 21 to resist the contact of the microswitch; the contact of the microswitch also requires a certain deformation to trigger the microswitch; the photoelectric switch 4 used in the present invention only needs the swing of the collision plate 21 to generate an electrical signal; so the present invention is more sensitive than the conventional printing carriage anti-collision assembly; the reset mechanism is used to pull the collision plate mechanism to reset after removing obstacles or debris; the back of the installation box body 1 is connected to the printing carriage; the collision plate mechanism includes a connected collision plate 21 and a trigger plate 22; the two ends of the collision plate 21 are coaxially hinged with the inner walls on the left and right sides of the installation box body 1, so that it can swing vertically; the trigger plate 22 extends upward from the top of the collision plate 21 and can move with the collision plate 21; the photoelectric switch 4 is installed on the top inner wall of the installation box body 1 and cooperates with the upper end of the trigger plate 22; the striker plate 21 cooperates with obstacles or debris; the trigger plate 22 moves with the photoelectric sensor; the reset mechanism includes a fixed column 31, a swing column 32, and a reset spring 33; the fixed column 31 is arranged just above the hinge position of the striker plate 21 and the installation box body 1, and is connected to the installation box body 1; the swing column 32 is connected to the middle of the trigger plate 22; the axis of the swing column 32, the hinge axis of the striker plate 21 and the installation box body 1 are in the same plane; the striker plate 2 1 is arranged parallel to the plane; the reset spring 33 is connected to the middle of the fixed column 31 and the middle of the swing column 32 respectively; the reset spring 33 is a tension spring, and when its expansion and contraction is the smallest, the hitter 21 and the hinged position of the mounting box body 1, the swing column 32, and the fixed column 31 are on the same vertical plane, and the hitter 21 is in a vertical state; the elastic force of the reset spring 33 is also used to resist the swing of the hitter 21; therefore, the hitter 21 of the present invention will not be over-reset, and it can be ensured that the hitter 21 is completely reset to its position.

[0018] Compared with the prior art, the present invention uses a photoelectric switch 4, which can generate an electrical signal only by the swing of the impact plate 21, and is more sensitive than the conventional printing carriage anti-collision component; when the expansion and contraction amount of the reset spring 33 is the smallest, the impact plate 21 and the hinged position of the installation box body 1, the swing column 32, and the fixed column 31 are on the same vertical plane, and the impact plate 21 is in a vertical state; the elastic force of the reset spring 33 is also used to resist the swing of the impact plate 21; therefore, the impact plate 21 of the present invention will not be over-reset, and can ensure that the impact plate 21 is completely reset into place.

[0019] The photoelectric sensor in this embodiment is a normally closed sensor; when the upper end of the trigger plate 22 blocks the sensing light of the photoelectric sensor, the photoelectric sensor will not send out an electrical signal; when the upper end of the trigger plate 22 changes position and no longer blocks the sensing light of the photoelectric sensor, the photoelectric sensor can send out an electrical signal to brake the printing carriage in time.

[0020] The impact plate mechanism also includes a reinforcement box body 23 and connecting screws 24; the top and the front of the reinforcement box body 23 are open; the trigger plate 22 extends upward from one side of the reinforcement box body 23; connecting ear plates 231 are provided on both sides of the front end of the reinforcement box body 23; the impact plate 21 is arranged on the front side of the reinforcement box body 23 and is connected to the connecting ear plates 231 through the connecting screws 24; the reinforcement box body 23 is used to strengthen the structural strength of the impact plate 21 to ensure that the impact plate 21 is stable and effective.

[0021] A hinge column 232 extends outward from the side of the reinforcement box body 23 ; the outer end of the hinge column 232 penetrates the side wall of the installation box body 1 and rotates with the installation box body 1 ; the hinge column 232 leaves enough space for the installation of the swing column 32 .

[0022] The trigger plate 22 includes a vertical plate A 221, a vertical plate 222, and a vertical plate B 223 which are connected in sequence; the two ends of the vertical plate 222 are respectively vertically connected to the vertical plate A 221 and the vertical plate B 223; the swing column 32 is arranged at the upper end of the vertical plate B 223; such a trigger plate 22 can avoid the fixed column 31 and the reset spring 33.

[0023] The reset mechanism also includes a rubber sleeve 34; the rubber sleeve 34 is sleeved on the middle part of the fixed column 31 and the middle part of the swing column 32; a connecting ring 331 is provided at the end of the reset spring 33; the connecting rings 331 at both ends of the reset spring 33 are respectively connected to the middle part of the fixed column 31 and the middle part of the swing column 32; the rubber sleeve 34 can improve the connection stability of the reset spring 33 and the fixed column 31 and the swing column 32.

[0024] Vertical long installation holes 11 are symmetrically arranged on the back of the installation box body 1 to facilitate connection with the printing carriage.

[0025] The printing carriage anti-collision assembly also includes a side cover plate 5 ; the side cover plate 5 is arranged just above the collision plate 21 and connected to the upper part of the installation box body 1 to protect the collision plate mechanism and the reset mechanism inside the installation box body 1 .

[0026] The side cover plate 5 is provided with a mounting hole 51 corresponding to the mounting long hole 11 ; a tool can be passed through the mounting hole 51 to connect the printing carriage anti-collision assembly with the printing carriage.

[0027] The upper edge of the side cover plate 5 is provided with an inward flange 52; the printing carriage anti-collision assembly also includes a mounting screw 6; the mounting screw 6 passes through the flange 52 and cooperates with the top thread of the mounting box body 1; the flange 52 can facilitate the installation of the mounting screw 6.

[0028] The working process of this embodiment: ①Trigger When the reciprocating printing carriage encounters obstacles or debris, the collision plate 21 contacts the obstacles or debris before the printing carriage body; the collision plate 21 swings relative to the hinge column 232; the difference is that the lower end of the collision plate 21 swings inwards and the upper end swings outwards; the trigger plate 22 moves with the collision plate 21; the trigger plate 22 leaves the photoelectric sensor, causing the photoelectric sensor to generate an electrical signal, so that the printing signal is braked in time; ②Reset When the obstruction or debris is removed, the return spring 33 pulls the swing column 32, so that the upper end of the impact plate 21 swings inward and the lower end swings inward; when the distance between the swing column 32 and the fixed column 31 is the smallest, the expansion and contraction of the return spring 33 also reaches the smallest; the swing column 32, the fixed column 31, and the hinge column 232 are on the same vertical plane; the impact plate 21 is also in a vertical state; if the impact plate 21 continues to swing, the expansion and contraction of the return spring 33 increases; the elastic force of the return spring 33 resists the continued swinging of the impact plate 21; therefore, the impact plate 21 is in a vertical state, which is also its most stable state.

[0029] Embodiment 2: Embodiment 2 is basically the same as Embodiment 1, and the similarities are not repeated here. The differences are as follows: an inward groove 12 is provided at the lower front portion of the mounting box body 1; the side cover plate 5 is mounted at the upper front portion of the mounting box body 1; and the collision plate 21 is mounted in the groove 12 to avoid interference with the side cover plate 5.

[0030] A wire hole 13 is provided on the back of the installation box body 1 for passing wires connected to the photoelectric sensor.

Claims

1. A printing carriage anti-collision component, characterized in that: It includes an installation box body, a collision plate mechanism, a reset mechanism, and a photoelectric switch; the front and bottom surfaces of the installation box body are open, and the back surface is connected to the printing carriage; the collision plate mechanism includes a collision plate and a trigger plate connected to each other; the two ends of the collision plate are coaxially hinged with the left and right inner walls of the installation box body; the trigger plate extends upward from the top of the collision plate; the photoelectric switch is installed on the top inner wall of the installation box body and cooperates with the upper end of the trigger plate; the reset mechanism includes a fixed column, a swing column, and a reset spring; the fixed column is arranged just above the hinge position of the collision plate and the installation box body, and is connected to the installation box body; the swing column is connected to the middle of the trigger plate; the axis of the swing column and the hinge axis of the collision plate and the installation box body are in the same plane; the collision plate is arranged parallel to the plane; the reset spring is respectively connected to the middle of the fixed column and the middle of the swing column.

2. The printing carriage anti-collision assembly according to claim 1, characterized in that: The impact plate mechanism also includes a reinforcement box body and connecting screws; the top and front of the reinforcement box body are open; the trigger plate extends upward from one side of the reinforcement box body; connecting ear plates are provided on both sides of the front end of the reinforcement box body; the impact plate is arranged on the front side of the reinforcement box body and is connected to the connecting ear plate through the connecting screws.

3. The printing carriage anti-collision assembly according to claim 2, characterized in that: A hinge column extends outward from the side of the reinforcement box body; the outer end of the hinge column penetrates the side wall of the installation box body and rotates with the installation box body.

4. The printing carriage anti-collision assembly according to claim 1, characterized in that: The trigger plate comprises a vertical plate A, a vertical plate and a vertical plate B which are connected in sequence; two ends of the vertical plate are respectively vertically connected with the vertical plate A and the vertical plate B; and a swing column is arranged at the upper end of the vertical plate B.

5. The printing carriage anti-collision assembly according to claim 1, characterized in that: The reset mechanism also includes a rubber sleeve; the rubber sleeve is sleeved on the middle part of the fixed column and the middle part of the swing column; a connecting ring is provided at the end of the reset spring; the connecting rings at both ends of the reset spring are respectively connected to the middle part of the fixed column and the middle part of the swing column.

6. The printing carriage anti-collision assembly according to claim 1, characterized in that: Vertical long installation holes are symmetrically arranged on the back of the installation box body.

7. The printing carriage anti-collision assembly according to claim 1, characterized in that: It also includes a side cover plate; the side cover plate is arranged just above the collision plate and connected to the upper part of the installation box body.

8. The printing carriage anti-collision assembly according to claim 7, characterized in that: The upper edge of the side cover plate is provided with an inward flange; the printing carriage anti-collision assembly also includes a mounting screw; the mounting screw passes through the flange and cooperates with the top thread of the mounting box body.

9. The printing carriage anti-collision assembly according to claim 7, characterized in that: An inward groove is arranged at the lower front part of the installation box body; the side cover plate is installed at the upper front part of the installation box body; and the collision plate is installed in the groove.

10. The printing carriage anti-collision assembly according to claim 1, characterized in that: A wire hole is provided on the back of the installation box.

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