Dispensing machine for mobile phone screen production

Abstract

The invention relates to the technical field of mobile phone production, and discloses a dispensing machine for mobile phone screen production, the dispensing machine comprises a dispensing machine base and a workpiece, the top of the dispensing machine base is provided with a mobile platform, and the rear end of the dispensing machine base is provided with a dispensing mechanism. Through combined use of the composite arc-shaped support, the major arc toothed plate, the power output component, the pressure detection assembly, the probe, the hollow clamping platform, the clamping assembly and the four positioning probe holes, after a workpiece is clamped and centered by the clamping assembly, the power output component is in meshed transmission with the major arc toothed plate to rotate until the probe is aligned with a dispensing opening; the probe is driven to detect the four positioning probe holes in the periphery of the workpiece through idle operation of the moving platform and the dispensing mechanism, if the probe is not blocked, it is indicated that the workpiece is accurately clamped and the appearance size is qualified, and if the probe is blocked, the probe reversely acts on the pressure detection assembly to generate a pressure signal, and the workpiece is accurately clamped. And an operator is warned that the workpiece is not accurately clamped or the appearance size is unqualified.

Description

Technical Field

[0001] The invention relates to the technical field of mobile phone production, and in particular to a glue dispensing machine for producing mobile phone screens. Background Art

[0002] A dispensing machine, also known as a glue coating machine, is an automated machine that specifically controls fluids and drips and applies fluids to the surface or inside of products. The use process is summarized, and it can achieve three-dimensional and four-dimensional path dispensing, with precise positioning and greatly improved production efficiency.

[0003] The existing glue dispensing machines have a wide range of applications. For example, the screen assembly, mobile phone battery packaging, and laptop battery packaging in the production process of mobile phones all require the participation of glue dispensing machines. However, the applicant found in the actual operation that some large glue dispensing deviations occurred in the batch processing process. The reasons are two aspects. First, there are defective products with unqualified sizes in the batch workpieces, which then automatically deviate from the preset standard position during the limiting process of the clamping structure in the glue dispensing machine. Second, the clamping structure itself is worn and the clamping deviation increases, which then causes the workpiece to automatically deviate from the preset standard position during the limiting process. No matter which of the above situations is the case, the operator must react after the defective products are produced if he wants to discover it in time, which ultimately leads to increased processing costs. Summary of the invention

[0004] The present invention provides a glue dispensing machine for producing mobile phone screens, which solves the problems raised in the above-mentioned background technology.

[0005] The present invention provides the following technical solutions: a glue dispensing machine for mobile phone screen production, comprising a glue dispensing machine base and a workpiece, a mobile platform is installed on the top of the glue dispensing machine base, and a glue dispensing mechanism is installed on the rear end of the glue dispensing machine base, a glue dispensing port is arranged at the front end of the glue dispensing mechanism, a composite arc bracket is sleeved on the outer side of the front end of the glue dispensing mechanism, a superior arc tooth plate is slidably connected to the inside of the composite arc bracket, a power output component is transmission-connected to the top of the superior arc tooth plate, a semi-open groove is opened inside the superior arc tooth plate, and a collecting bottle capable of communicating with the semi-open groove and a pressure detection component are respectively sleeved at both ends of the superior arc tooth plate, a probe is connected to the detection end of the pressure detection component, and the probe and the collecting bottle can be arranged in alignment with the glue dispensing port up and down under the meshing adjustment of the power output component with the superior arc tooth plate;

[0006] A hollow clamping platform is installed on the top of the mobile platform. A positioning probe hole and two symmetrical slide grooves are opened on the top of the hollow clamping platform. A clamping assembly is installed inside the hollow clamping platform, and two output structures of the clamping assembly respectively pass through two clearance grooves and form a clamping space on the top surface of the hollow clamping platform that can center and limit the workpiece.

[0007] Preferably, the composite arc-shaped bracket comprises an arc-shaped sleeve plate and a support rod, and two ends of the support rod are respectively fixedly connected to the inner wall of the arc-shaped sleeve plate and the surface of the front end structure of the dispensing mechanism.

[0008] Preferably, a transition sleeve is fixedly connected to the bottom side of the hollow clamping platform, a threaded hole is opened on the top of the movable platform, and the transition sleeve and the threaded hole are installed and fixed by screws, thereby providing installation conditions for the subsequent modular replacement of the hollow clamping platform and related structures of the hollow clamping platform.

[0009] The power output component includes a first transmission gear, a bevel gear box, and a brake servo motor. The first transmission gear can be meshed and connected with the superior arc gear plate. The output end of the brake servo motor is transmission-connected with the input end of the bevel gear box. The output end of the bevel gear box is transmission-connected with the middle part of the first transmission gear. A support seat is fixedly installed between the shell surface of the bevel gear box and the support rod, and between the shell surface of the brake servo motor and the support rod. The power output component provides power for the subsequent rotation output of the superior arc gear plate, thereby improving the automation performance of the overall device.

[0010] Selectedly, a glue-absorbing cotton layer is nested in one side of the semi-open groove, and a transition hole that can be aligned with the top port of the collecting bottle is opened on the inner side of one end of the glue-absorbing cotton layer. The glue-absorbing cotton layer can better collect glue that may drip from the glue dispensing port, and a threaded hole is opened on the inner side of one end of the superior arc tooth plate, and an external thread is opened on the surface of the port on the top of the collecting bottle and is threadedly connected with the threaded hole, so as to facilitate the disassembly and replacement of the collecting bottle.

[0011] The pressure detection assembly includes a composite sleeve, a pressure sensor, a T-type pressure rod and a buffer spring. One end of the composite sleeve is fixedly connected to the surface of the other end of the superior arc tooth plate. A transition ring plate is fixedly sleeved on the inner side of the middle part of the composite sleeve. The pressure sensor is fixedly sleeved on the inner side of one end of the composite sleeve. One end of the T-type pressure rod penetrates the transition ring plate and is fitted with the pressure sensing surface of the pressure sensor. The other end of the T-type pressure rod penetrates the end face structure of the other end of the composite sleeve and extends to the outside of the composite sleeve. The two ends of the buffer spring are respectively fixedly connected to the surface of the transition ring plate and the inner wall of the other end of the composite sleeve. The pressure detection assembly serves as a pressure sensing condition and can promptly feedback the pressure signal for the background operator to make timely adjustments after the mobile platform is blocked.

[0012] Preferably, the end surface of the other end of the T-shaped pressure rod is provided with an external thread, and the inner side of the end of the probe close to the composite sleeve is provided with an internal thread, and the probe is detachably installed with the T-shaped pressure rod by thread locking of the internal thread and the external thread, thereby facilitating subsequent maintenance and replacement and maintaining the sustainable use function of the overall pressure testing assembly.

[0013] The clamping assembly comprises a second transmission gear and an electric push rod, the inner side of the middle part of the second transmission gear is provided with a support shaft fixedly mounted on the inner wall of the bottom of the hollow clamping platform through a bearing sleeve, both sides of the second transmission gear are meshingly connected with spur gear plates, one end of the two spur gear plates are fixedly connected with an L-shaped clamping plate that can be engaged with a sliding groove, and the two L-shaped clamping plates are fit-connected with the top surface of the hollow clamping platform as the output structure of the clamping assembly, the output end of the electric push rod is transmission-connected with the other end of a spur gear plate, and the clamping assembly can automatically clamp the workpiece to be processed.

[0014] Preferably, guide grooves are provided inside the two spur gear plates, in which a T-shaped guide plate fixedly mounted on the inner wall of the bottom of the hollow clamping platform is clamped. The T-shaped guide plate is used in conjunction with the guide groove to correct the reciprocating spur gear plate and maintain a long-term standard linear displacement.

[0015] Preferably, the number of the positioning probe holes is four and they can be tangent to two opposite corner side structures of the workpiece clamped by the clamping assembly and the side structures on both sides of the middle of the workpiece in turn, thereby providing conditions for establishing standards for subsequent inspections.

[0016] The present invention has the following beneficial effects:

[0017] 1. The present invention comprises a composite arc bracket, an arc tooth plate, a power output component, a pressure detection component and a probe to form a pre-inspection device. After being used in combination with a hollow clamping platform, a clamping component and four positioning probe holes, after the workpiece is clamped and centered by the clamping component, the arc tooth plate is meshed and driven by the power output component to rotate until the probe is aligned with the dispensing port. Then, the idle operation of the mobile platform and the dispensing mechanism is used to drive the probe to automatically detect the four positioning probe holes around the workpiece. If the probe is not blocked and the reverse-acting pressure detection component does not generate a pressure signal, it means that the workpiece is accurately clamped and the appearance size is qualified. If the probe is blocked, the reverse-acting pressure detection component generates a pressure signal, which warns the operator that the workpiece is not accurately clamped or the appearance size is unqualified and needs to be repaired or inspected in time to avoid the output of defective products.

[0018] 2. The pressure detection assembly and the probe provided in the present invention are assembled in a detachable manner by threaded connection. After the probe is damaged during the subsequent detection process, it can be easily replaced, thereby maintaining the sustainable use effect of the pressure detection assembly and the overall device.

[0019] 3. The superior arc tooth plate in the pre-inspection device provided in the present invention has a semi-open groove in one end away from the pressure inspection component. When used in combination with the provided glue-absorbing cotton layer and the collecting bottle, the superior arc tooth plate can be rotated to the semi-open groove to cover the bottom port of the glue dispensing port through the meshing transmission of the power output component. Then, the semi-open groove, the glue-absorbing cotton layer and the collecting bottle can be used to absorb or recycle the excess glue flowing out of the glue dispensing port, thereby creating favorable conditions for subsequent reuse and reducing the use cost of the overall device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a front view schematic diagram of the composite arc-shaped bracket of the present invention;

[0022] Figure 3 It is an enlarged schematic diagram of the composite arc-shaped bracket of the present invention;

[0023] Figure 4 It is an enlarged schematic diagram of the superior arc tooth plate of the structure of the present invention;

[0024] Figure 5 It is a cross-sectional schematic diagram of the structural pressure detection assembly of the present invention;

[0025] Figure 6 It is a cross-sectional schematic diagram of the collecting bottle of the present invention;

[0026] Figure 7 A schematic top view of a positioning probe hole for the structure of the present invention;

[0027] Figure 8 It is an enlarged schematic diagram of the structural clamping assembly of the present invention.

[0028] In the figure: 1. Dispensing machine base; 2. Mobile platform; 3. Dispensing mechanism; 4. Dispensing port; 5. Workpiece; 6. Compound arc bracket; 61. Arc sleeve; 62. Support rod; 7. Superior arc tooth plate; 8. Hollow clamping platform; 9. Power output component; 91. First transmission gear; 92. Bevel gear box; 93. Brake servo motor; 10. Glue absorption cotton layer; 11. Pressure detection component; 111. Compound sleeve; 112. Pressure sensor; 113. T-type pressure rod; 114. Buffer spring; 12. Probe; 13. Collecting bottle; 14. Slide; 15. Clamping component; 151. Second transmission gear; 152. Straight tooth plate; 153. L-type clamping plate; 154. Electric push rod; 155. T-type guide plate; 16. Positioning probe hole. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-8 A glue dispensing machine for mobile phone screen production comprises a glue dispensing machine base 1 and a workpiece 5. A mobile platform 2 is installed on the top of the glue dispensing machine base 1, and a glue dispensing mechanism 3 is installed at the rear end of the glue dispensing machine base 1. A glue dispensing port 4 is arranged at the front end of the glue dispensing mechanism 3. A composite arc bracket 6 is sleeved on the outer side of the front end of the glue dispensing mechanism 3. A superior arc tooth plate 7 is slidably connected inside the composite arc bracket 6. A power output component 9 is transmission-connected to the top of the superior arc tooth plate 7. The power output component 9 comprises a first transmission gear 91, a bevel gear box 92, and a brake servo motor 93. The first transmission gear 91 can be meshed and connected with the superior arc tooth plate 7. The output end of the brake servo motor 93 is transmission-connected to the input end of the bevel gear box 92. The output end of the bevel gear box 92 is transmission-connected to the middle part of the first transmission gear 91. A support seat is fixedly installed between the shell surface of the bevel gear box 92 and the support rod 62, and between the shell surface of the brake servo motor 93 and the support rod 62. The power output component 9 provides power for the subsequent rotation output of the superior arc tooth plate 7, thereby improving the automation performance of the overall device.

[0031] A semi-open groove is provided inside the superior arc tooth plate 7, and a collecting bottle 13 and a pressure detection assembly 11 are respectively provided at both ends of the superior arc tooth plate 7, and a probe 12 is connected to the detection end of the pressure detection assembly 11, and the probe 12 and the collecting bottle 13 can be aligned with the dispensing port 4 in the upper and lower directions under the meshing adjustment of the power output component 9 and the superior arc tooth plate 7;

[0032] The pressure detection assembly 11 includes a composite sleeve 111, a pressure sensor 112, a T-shaped pressure rod 113 and a buffer spring 114. One end of the composite sleeve 111 is fixedly connected to the surface of the other end of the superior arc tooth plate 7. A transition ring plate is fixedly sleeved on the inner side of the middle part of the composite sleeve 111. The pressure sensor 112 is fixedly sleeved on the inner side of one end of the composite sleeve 111. One end of the T-shaped pressure rod 113 penetrates the transition ring plate and is fitted and connected with the pressure sensing surface of the pressure sensor 112. The other end of the T-shaped pressure rod 113 penetrates the end surface structure of the other end of the composite sleeve 111 and extends to the outside of the composite sleeve 111. The buffer spring 114 is provided. The two ends of 14 are respectively fixedly connected to the surface of the transition ring plate and the inner wall of the other end of the composite sleeve 111. The pressure detection assembly 11, as a pressure-sensing condition, can timely feedback the pressure signal for the backstage operator to make timely adjustments after the mobile platform 2 is blocked. The end surface of the other end of the T-type pressure rod 113 is provided with an external thread, and the inner side of the end of the probe 12 close to the composite sleeve 111 is provided with an internal thread, and the probe 12 is detachably installed with the T-type pressure rod 113 by means of thread locking of the internal thread and the external thread, thereby facilitating subsequent maintenance and replacement, and maintaining the sustainable use function of the overall device of the pressure detection assembly 11;

[0033] A glue absorbing cotton layer 10 is nested in one side of the semi-open groove, and a transition hole that can be aligned with the top port of the collecting bottle 13 is provided on the inner side of one end of the glue absorbing cotton layer 10, so that the glue absorbing cotton layer 10 can better collect the glue that may drip from the glue dispensing port 4, and a threaded hole is provided on the inner side of one end of the superior arc tooth plate 7, and an external thread is provided on the surface of the port at the top of the collecting bottle 13 and the threaded hole is threadedly connected, so as to facilitate the disassembly and replacement of the collecting bottle 13;

[0034] A hollow clamping platform 8 is installed on the top of the mobile platform 2, and a transition sleeve is fixedly connected to the bottom side of the hollow clamping platform 8. A threaded hole is opened on the top of the mobile platform 2, and the transition sleeve and the threaded hole are installed and fixed by screws, thereby providing installation conditions for the subsequent modular replacement of the hollow clamping platform 8 and the related structures of the hollow clamping platform 8. A positioning probe hole 16 and two symmetrical slide grooves 14 are opened on the top of the hollow clamping platform 8. A clamping assembly 15 is set inside the hollow clamping platform 8, and the two output structures of the clamping assembly 15 respectively penetrate the two make way grooves and form a clamping space on the top surface of the hollow clamping platform 8 that can center and limit the workpiece 5;

[0035] The clamping assembly 15 includes a second transmission gear 151 and an electric push rod 154. The inner side of the middle part of the second transmission gear 151 is provided with a support shaft fixedly mounted on the inner wall of the bottom of the hollow clamping platform 8 through a bearing sleeve. Both sides of the second transmission gear 151 are meshedly connected with spur plates 152. One end of the two spur plates 152 is fixedly connected with an L-shaped clamping plate 153 that can be clamped in the slide groove 14. The two L-shaped clamping plates 153 are connected to the top surface of the hollow clamping platform 8 as the output structure of the clamping assembly 15. The output end of the electric push rod 154 is transmission-connected with the other end of a spur plate 152. The clamping assembly 15 can automatically clamp the workpiece to be processed. The inside of the two spur plates 152 is provided with a guide groove. A T-shaped guide plate 155 fixedly mounted on the inner wall of the bottom of the hollow clamping platform 8 is clamped in the guide groove. The T-shaped guide plate 155 is used in conjunction with the guide groove to correct the reciprocating spur plate 152 and maintain a long-term standard linear displacement.

[0036] There are four positioning holes 16 which can be tangent to two opposite corner side structures of the workpiece 5 clamped by the clamping assembly 15 and the side structures on both sides of the middle of the workpiece 5, thereby providing standard conditions for subsequent inspections.

[0037] Working principle:

[0038] Embodiment 1

[0039] Place the workpiece 5 at the middle position of the top of the hollow clamping platform 8, then start the electric push rod 154, and the output end of the electric push rod 154 drives the corresponding spur plate 152, and then under the synchronous meshing action of the second transmission gear 151, the two spur plates 152 will drive their respective corresponding L-shaped clamping plates 153 to move similarly, and then the workpiece 5 is clamped in the center, and the two slide grooves 14 provide moving space for the two L-shaped clamping plates 153 respectively;

[0040] After the workpiece 5 is clamped stably, the brake servo motor 93 inside the power output component 9 is started, and the brake servo motor 93 drives the first transmission gear 91 through the bevel gear box 92 to mesh and drive the superior arc gear plate 7 clockwise, and then under the support of the arc sleeve plate 61, the superior arc gear plate 7 is meshed and driven by the first transmission gear 91 and rotates synchronously until the probe 12 is aligned with the dispensing port 4, and then the brake servo motor 93 is closed;

[0041] Next, the dispensing mechanism 3 is operated in an empty manner and cooperates with the mobile platform 2 to perform an empty dispensing operation on the four positioning probe holes 16. At this time, there are two situations. The first situation is that the probe 12 is successfully inserted into the four positioning probe holes 16 in sequence and does not touch the bottom during the insertion process with the corresponding positioning probe holes 16, so there is no pressure signal output, and thus the workpiece 5 after the surface is clamped is in the set standard position;

[0042] The second is that when the probe 12 is blocked by the side of the workpiece 5 during the process of fitting with any positioning probe hole 16, the probe 12 presses the T-shaped pressure rod 113 in the opposite direction, so that it moves and presses the pressure sensor 112, and the pressure sensor 112 generates a pressure signal. After the pressure signal is transmitted to the background, it will be linked to the existing alarm device to alarm, thereby prompting the operator that the workpiece 5 to be processed is in an abnormal state, and the workpiece 5 needs to be repaired or the clamping assembly 15 needs to be checked to avoid the generation of defective parts;

[0043] After the detection is completed, restart the brake servo motor 93, and the brake servo motor 93 drives the first transmission gear 91 through the bevel gear box 92 to mesh the arc gear plate 7 in a counterclockwise direction to reset the pressure detection component 11 and the probe 12. Subsequently, the mobile platform 2 and the dispensing mechanism 3 automatically dispense glue to the workpiece 5 according to the preset program. After the dispensing is completed, turn off the electric push rod 154, take out the processed workpiece 5, and then repeat the above steps to perform repeated operations.

[0044] Embodiment 2

[0045] After the batch of workpieces 5 have been specially screened for their appearance dimensions, a detection cycle can be set to perform random inspections according to the steps of the above-mentioned embodiment 1. When there are signs of residual glue dripping from the dispensing port 4 during a long period of operation, the brake servo motor 93 inside the power output component 9 is immediately started after each dispensing operation of the dispensing mechanism 3. The brake servo motor 93 drives the first transmission gear 91 through the bevel gear box 92 to mesh and transmit the superior arc tooth plate 7 counterclockwise. Then, under the support of the set of the arc sleeve plate 61, the superior arc tooth plate 7 is meshed and transmitted by the first transmission gear 91 and rotates synchronously until the semi-open groove inside one end of the superior arc tooth plate 7 covers the port at the bottom of the dispensing port 4. Then, the residual glue dripping from the dispensing port 4 will flow into the semi-open groove and be absorbed by the glue-absorbing cotton layer 10 or further fall into the inside of the collecting bottle 13 for centralized collection, creating conditions for subsequent recycling.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. At the same time, in the drawings of the present invention, the fill pattern is only for distinguishing layers, without any other limitation.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A glue dispensing machine for mobile phone screen production, comprising a glue dispensing machine base (1) and a workpiece (5), wherein a mobile platform (2) is installed on the top of the glue dispensing machine base (1), and a glue dispensing mechanism (3) is installed at the rear end of the glue dispensing machine base (1), and a glue dispensing port (4) is provided at the front end of the glue dispensing mechanism (3), characterized in that: The front end of the dispensing mechanism (3) is sleeved with a composite arc bracket (6), the interior of the composite arc bracket (6) is slidably connected with a superior arc tooth plate (7), the top of the superior arc tooth plate (7) is transmission-connected with a power output component (9), the interior of the superior arc tooth plate (7) is provided with a semi-open groove, and the two ends of the superior arc tooth plate (7) are respectively sleeved with a collecting bottle (13) that can communicate with the semi-open groove and a pressure detection component (11), the detection end of the pressure detection component (11) is connected with a probe (12), and the probe (12) and the collecting bottle (13) can be aligned with the dispensing port (4) in the power output component (9) through meshing adjustment with the superior arc tooth plate (7); A hollow clamping platform (8) is installed on the top of the mobile platform (2), and a positioning exploration hole (16) and two symmetrical slide grooves (14) are opened on the top of the hollow clamping platform (8). A clamping assembly (15) is mounted inside the hollow clamping platform (8), and two output structures of the clamping assembly (15) respectively penetrate the two clearance grooves and form a clamping space on the top surface of the hollow clamping platform (8) that can center and limit the workpiece (5).

2. A glue dispensing machine for mobile phone screen production according to claim 1, characterized in that: The composite arc-shaped bracket (6) comprises an arc-shaped sleeve plate (61) and a support rod (62), and the two ends of the support rod (62) are respectively fixedly connected to the inner wall of the arc-shaped sleeve plate (61) and the surface of the front end structure of the dispensing mechanism (3).

3. The glue dispensing machine for mobile phone screen production according to claim 1, characterized in that: A transition sleeve is fixedly connected to the bottom side of the hollow clamping platform (8), a threaded hole is provided on the top of the movable platform (2), and the transition sleeve is fixed to the threaded hole by screws.

4. The glue dispensing machine for mobile phone screen production according to claim 2, characterized in that: The power output component (9) comprises a first transmission gear (91), a bevel gear box (92), and a brake servo motor (93); the first transmission gear (91) can be meshed and connected with the superior arc gear plate (7); the output end of the brake servo motor (93) is transmission-connected with the input end of the bevel gear box (92); the output end of the bevel gear box (92) is transmission-connected with the middle part of the first transmission gear (91); and a support seat is fixedly installed between the shell surface of the bevel gear box (92) and the support rod (62), and between the shell surface of the brake servo motor (93) and the support rod (62).

5. The glue dispensing machine for mobile phone screen production according to claim 1, characterized in that: A glue absorbing cotton layer (10) is nested in one side of the semi-open groove, a transition hole capable of being aligned with the top port of the collecting bottle (13) is provided on the inner side of one end of the glue absorbing cotton layer (10), a threaded hole is provided on the inner side of one end of the superior arc tooth plate (7), and an external thread is provided on the surface of the port at the top of the collecting bottle (13) and is threadedly connected with the threaded hole.

6. The glue dispensing machine for mobile phone screen production according to claim 1, characterized in that: The pressure detection assembly (11) comprises a composite sleeve (111), a pressure sensor (112), a T-shaped pressure rod (113) and a buffer spring (114); one end of the composite sleeve (111) is fixedly connected to the surface of the other end of the superior arc tooth plate (7); a transition ring plate is fixedly sleeved on the inner side of the middle part of the composite sleeve (111); the pressure sensor (112) is fixedly sleeved on the inner side of one end of the composite sleeve (111); one end of the T-shaped pressure rod (113) penetrates the transition ring plate and is closely connected to the pressure-sensitive surface of the pressure sensor (112); the other end of the T-shaped pressure rod (113) penetrates the end surface structure of the other end of the composite sleeve (111) and extends to the outside of the composite sleeve (111); and the two ends of the buffer spring (114) are respectively fixedly connected to the surface of the transition ring plate and the inner wall of the other end of the composite sleeve (111).

7. The glue dispensing machine for mobile phone screen production according to claim 6, characterized in that: The end surface of the other end of the T-shaped pressure rod (113) is provided with an external thread, and the inner side of one end of the probe (12) close to the composite sleeve (111) is provided with an internal thread, and the probe (12) is detachably mounted on the T-shaped pressure rod (113) by means of thread locking of the internal thread and the external thread.

8. The glue dispensing machine for mobile phone screen production according to claim 1, characterized in that: The clamping assembly (15) comprises a second transmission gear (151) and an electric push rod (154); the inner side of the middle portion of the second transmission gear (151) is provided with a support shaft fixedly mounted on the inner wall of the bottom of the hollow clamping platform (8) through a bearing sleeve; both sides of the second transmission gear (151) are meshingly connected with spur plates (152); one end of each of the two spur plates (152) is fixedly connected with an L-shaped clamping plate (153) capable of being clamped in the slide groove (14); and the two L-shaped clamping plates (153) are fitted and connected to the top surface of the hollow clamping platform (8) as output structures of the clamping assembly (15); and the output end of the electric push rod (154) is transmission-connected to the other end of a spur plate (152).

9. The glue dispensing machine for mobile phone screen production according to claim 8, characterized in that: The two straight tooth plates (152) are each provided with a guide groove, and a T-shaped guide plate (155) fixedly mounted on the inner wall of the bottom of the hollow clamping platform (8) is clamped in the guide groove.

10. The glue dispensing machine for mobile phone screen production according to claim 1, characterized in that: The number of the positioning probe holes (16) is four and they can be in tangent to two opposite corner side structures of the workpiece (5) clamped by the clamping assembly (15) and the side structures on both sides of the middle of the workpiece (5) in sequence.

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